Grizzly G0768 User Manual To The Bf2821a0 7219 4865 986a 8e2204280c84

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MODEL G0768/G0769
8" X 16" VARIABLE-SPEED
LATHE & LATHE/MILL
OWNER'S MANUAL
(For models manufactured since 8/15)

Model G0768

Model G0769

COPYRIGHT © AUGUST, 2014 BY GRIZZLY INDUSTRIAL, INC. REVISED AUGUST, 2015 (MN)
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
# BLTSDM16348 PRINTED IN CHINA

V2.08.15

This manual provides critical safety instructions on the proper setup,
operation, maintenance, and service of this machine/tool. Save this
document, refer to it often, and use it to instruct other operators.
Failure to read, understand and follow the instructions in this manual
may result in fire or serious personal injury—including amputation,
electrocution, or death.
The owner of this machine/tool is solely responsible for its safe use.
This responsibility includes but is not limited to proper installation in
a safe environment, personnel training and usage authorization,
proper inspection and maintenance, manual availability and comprehension, application of safety devices, cutting/sanding/grinding tool
integrity, and the usage of personal protective equipment.
The manufacturer will not be held liable for injury or property damage
from negligence, improper training, machine modifications or misuse.

Some dust created by power sanding, sawing, grinding, drilling, and
other construction activities contains chemicals known to the State
of California to cause cancer, birth defects or other reproductive
harm. Some examples of these chemicals are:
•
•
•

Lead from lead-based paints.
Crystalline silica from bricks, cement and other masonry products.
Arsenic and chromium from chemically-treated lumber.

Your risk from these exposures varies, depending on how often you
do this type of work. To reduce your exposure to these chemicals:
Work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter
out microscopic particles.

Table of Contents
INTRODUCTION................................................ 3
Machine Description....................................... 3
Contact Info.................................................... 3
Manual Accuracy............................................ 3
Identification (G0768)..................................... 4
Identification (G0769)..................................... 5
Controls & Components.................................. 6
Headstock.................................................................... 6
Carriage........................................................................ 6
Tailstock....................................................................... 7
End Gears, Pulleys, V-Belts......................................... 7
Milling Headstock (G0769 Only).................................. 8
G0768 Data Sheet.......................................... 9
G0769 Data Sheet........................................ 11
SECTION 1: SAFETY...................................... 13
Safety Instructions for Machinery................. 13
Additional Safety for Metal Lathes................ 15
Additional Safety for Mills/Drills.................... 16
Additional Lathe Chuck Safety..................... 17
SECTION 2: POWER SUPPLY....................... 18
Availability..................................................................18
Full-Load Current Rating............................................18
110V Circuit Requirements........................................18
Grounding & Plug Requirements...............................19
Extension Cords.........................................................19
SECTION 3: SETUP........................................ 20
Setup Overview............................................ 20
Unpacking..................................................... 20
Needed for Setup.......................................... 20
Inventory....................................................... 21
Cleanup......................................................... 22
Site Considerations....................................... 23
Lifting & Placing............................................ 24
Mounting....................................................... 25
Leveling......................................................... 26
Assembly...................................................... 26
Test Run....................................................... 27
Spindle Break-In........................................... 29
Lathe Spindle Break-In...............................................29
Mill Spindle Break-In (G0769 Only)...........................29
Recommended Adjustments......................... 30
SECTION 4: LATHE OPERATIONS............... 31
Operation Overview...................................... 31
Chuck & Faceplate Mounting....................... 32
Installation & Removal Device...................... 32
Chuck Installation......................................... 32
Scroll Chuck Clamping................................. 33
Changing Jaw Set......................................... 34

4-Jaw Chuck................................................. 35
Faceplate...................................................... 36
Tailstock........................................................ 37
Tailstock Quill Specs..................................................37
Positioning Tailstock..................................................37
Using Quill..................................................................37
Installing Tooling........................................................38
Removing Tooling......................................................38
Offsetting Tailstock.....................................................38
Aligning Tailstock to Spindle Centerline.....................39
Centers......................................................... 41
Dead Centers.............................................................41
Mounting Dead Center in Spindle..............................41
Removing Center from Spindle..................................41
Mounting Center in Tailstock.....................................42
Removing Center from Tailstock................................42
Mounting Workpiece Between Centers......................42
Steady Rest.................................................. 43
Follow Rest................................................... 43
Compound Rest............................................ 44
Four-Way Tool Post...................................... 44
Installing Tool.............................................................44
Aligning Cutting Tool with Spindle Centerline............45
Manual Feed................................................. 46
Carriage Handwheel..................................................46
Cross Slide Handwheel..............................................46
Compound Rest Handwheel......................................46
Spindle Speed.............................................. 47
Determining Spindle Speed.......................................47
Setting Spindle Speed Range....................................47
Setting Spindle Direction & Speed.............................47
Configuration Example...............................................48
Understanding Gear Charts.......................... 49
Feed & Thread Charts Label......................................49
How to Read the Feed Chart.....................................50
How to Read the Thread Charts................................51
End Gears..................................................... 52
Power Feed Configuration.........................................52
Primary Threading Configuration...............................52
Secondary Threading Configuration..........................52
Configuring End Gears...............................................53
Power Feed.................................................. 56
Power Feed Controls.................................................56
Setting Power Feed Rate...........................................57
Threading...................................................... 58
Headstock Threading Controls...................................58
Apron Threading Controls..........................................59
Thread Dial.................................................................59
Thread Dial Chart.......................................................59

SECTION 5: MILL OPERATIONS................... 60
Operation Overview...................................... 60
Removing Compound Rest........................... 61
Removing Compound Rest . .....................................61
Re-installing Compound Rest ...................................61
Headstock Movement................................... 62
Raising/Lowering Headstock......................................62
Tilting Headstock........................................................62
Table Travel.................................................. 63
Carriage Handwheel (X-Axis).....................................63
Cross Slide Handwheel (Y-Axis)................................63
Using Spindle Downfeed Controls................ 64
Coarse Downfeed......................................................64
Fine Downfeed...........................................................64
Engaging Fine Downfeed Controls............................64
Installing/Removing Tooling.......................... 65
Installing Tooling........................................................65
Removing Tooling......................................................66
Spindle Speed.............................................. 67
Determining Spindle Speed.......................................67
Setting Spindle Speed................................................67
SECTION 6: ACCESSORIES.......................... 68
SECTION 7: MAINTENANCE.......................... 71
Schedule....................................................... 71
Ongoing......................................................................71
Daily, Before Operations............................................71
Daily, After Operations...............................................71
Every 90 Hours of Operation.....................................71
Every 120 Hours of Operation...................................71
Annually......................................................................71
Cleaning/Protecting....................................... 71
Lubrication.................................................... 72
Lubrication Frequency................................................72
Ball Oilers...................................................................72
Leadscrew & Carriage Rack......................................73
Bedways.....................................................................73
Feed Gearbox............................................................73
Cross Slide & Compound Slide..................................73
End Gears..................................................................74
Column Ways (G0769)...............................................75
Quill Outside Surface.................................................75
Quill Rack . ................................................................75
Z-Axis Leadscrew (G0769)........................................76
Headstock Gears (G0769).........................................76
Machine Storage........................................... 77
Preparing Machine for Storage..................................77
Bringing Machine Out of Storage...............................77

SECTION 8: SERVICE.................................... 78
Troubleshooting............................................ 78
Motor & Electrical.......................................................78
Lathe Operation.........................................................79
Mill Operation.............................................................80
Tensioning & Replacing V-Belts................... 81
Adjusting Backlash....................................... 82
Cross Slide.................................................................82
Adjusting Leadscrew End Play..................... 82
Adjusting Gibs............................................... 83
Adjusting Cross Slide and Compound Slide Gibs......83
Adjusting Z-Axis Way Gib..........................................84
Adjusting Half Nut......................................... 84
Replacing Leadscrew Shear Pin.................. 85
Replacing Fuse............................................. 85
Replacing Brushes........................................ 86
Replacing Lathe Motor Brushes.................................86
Replacing Mill Motor Brushes (G0769)......................87
SECTION 9: WIRING....................................... 88
Wiring Safety Instructions............................. 88
G0768 Wiring Overview................................ 89
G0768 Wiring................................................ 90
G0768 Wiring Photos.................................... 91
G0769 Wiring Overview................................ 92
G0769 Wiring................................................ 93
G0769 Wiring Photos.................................... 94
SECTION 10: PARTS...................................... 95
Headstock..................................................... 95
Carriage Components & Accessories........... 96
Apron............................................................ 99
Gearbox...................................................... 100
Bed & End Gears........................................ 101
Tailstock...................................................... 102
G0769 Mill Column..................................... 103
G0769 Mill Headstock................................. 104
G0768 Labels & Cosmetics........................ 106
G0769 Labels & Cosmetics........................ 107
G0768 Electrical Component Diagram....... 108
G0769 Electrical Component Diagram....... 109
SECTION 11: APPENDIX.............................. 110
Threading & Feeding Chart........................ 110
Thread Dial Chart....................................... 110
WARRANTY & RETURNS............................ 113

INTRODUCTION
Machine Description

Manual Accuracy

The Model G0768 and G0769 share lathe features such as a 600 Watt (3 ⁄4 HP) 110V DC motor,
variable-speed controls with digital RPM display,
high/low spindle speed ranges, 4" 3-jaw and
4-jaw chucks, a convenient quick-lock tailstock, a
4-way turret toolpost, steady and follow rests, and
reverse feed for cutting left-hand threads.

We are proud to provide a high-quality owner’s
manual with your new machine!

The Model G0769 additionally features a 600
Watt (3 ⁄4 HP) milling headstock motor, 45° left/
right head tilt, coarse and fine downfeed controls, Z-axis dovetailed ways for maximum precision, and a 1⁄ 2" drill chuck. The cross slide
table features T-slots for mounting a vise. The
lathe/mill selector switch also makes changing between lathe and milling modes easy.
Both machines can be mounted on a sturdy workbench, or the optional Model T26599 stand—with
cabinet space for storing tooling and accessories.

Contact Info
We stand behind our machines! If you have questions or need help, contact us with the information
below. Before contacting, make sure you get the
serial number and manufacture date from the
machine ID label. This will help us help you faster.
Grizzly Technical Support
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: (570) 546-9663
Email: techsupport@grizzly.com

We made every effort to be exact with the instructions, specifications, drawings, and photographs
in this manual. Sometimes we make mistakes, but
our policy of continuous improvement also means
that sometimes the machine you receive is
slightly different than shown in the manual.
If you find this to be the case, and the difference
between the manual and machine leaves you
confused or unsure about something, check our
website for an updated version. We post current
manuals and manual updates for free on our website at www.grizzly.com.
Alternatively, you can call our Technical Support
for help. Before calling, make sure you write down
the Manufacture Date and Serial Number from
the machine ID label (see below). This information
is required for us to provide proper tech support,
and it helps us determine if updated documentation is available for your machine.

Manufacture Date

Serial Number

We want your feedback on this manual. What did
you like about it? Where could it be improved?
Please take a few minutes to give us feedback.
Grizzly Documentation Manager
P.O. Box 2069
Bellingham, WA 98227-2069
Email: manuals@grizzly.com
Model G0768/G0769 (Mfd. Since 8/15)

-3-

Identification (G0768)
Become familiar with the names and locations of the controls and features shown below to better understand
the instructions in this manual.

On/Off Switch w/
Emergency Stop
Button
3-Jaw
Chuck

Spindle Direction
Switch

Steady
Rest

4-Way
Tool Post
Compound Rest
Handwheel

Spindle
Speed
RPM
Display

Tailstock

Spindle
Speed Dial

Feed
Direction
Dial

Carriage
Handwheel

Cross Slide
Handwheel

Half Nut
Lever

Carriage
Lock

Thread
Dial

Figure 1. Model G0768 identification.

To reduce your risk of
serious injury, read this
entire manual BEFORE
using machine.
-4-

Model G0768/G0769 (Mfd. Since 6/14)

Identification (G0769)
Become familiar with the names and locations of the controls and features shown below to better understand
the instructions in this manual.
Fine Downfeed
Handwheel
Lathe/Mill Selector
Switch
On/Off Switch w/
Emergency Stop
Button

Spindle
Lock
3-Jaw
Chuck

Vertical Travel
Lock Levers
Downfeed
Selector
Knob

Steady
Rest

Spindle Direction
Switch

Vertical Travel
Handwheel

Coarse
Downfeed
Handle
4-Way
Tool Post
Tailstock

Spindle
Speed
RPM
Display

Spindle
Speed Dial

Feed
Direction
Dial

Carriage
Lock

Cross Slide
Handwheel

Thread
Dial
Carriage
Handwheel

Compound Rest
Handwheel

Half Nut
Lever
Figure 2. Model G0769 identification.

Model G0768/G0769 (Mfd. Since 6/14)

-5-

Controls &
Components
To reduce your risk of
serious injury, read this
entire manual BEFORE
using machine.

ON/OFF Switch w/Emergency Stop Button:
When pressed, cuts power to motor and control panel. To reset, press front tab, lift switch
cover, and press green ON button. Cover
must be unlatched for machine to run.

Lathe/Mill Selector Switch (G0769 Only):
Used to select between lathe mode (1), or
mill mode (2).

Carriage
I

Refer to Figures 3–8 and the following descriptions to become familiar with the basic controls of
this machine.

Headstock

H
E

F
L

M
Figure 4. Carriage controls.

G. Carriage Handwheel: Manually moves carriage left or right along bedway.
B

H. Cross Slide Handwheel: Moves cross slide
toward and away from workpiece.

4-Way Tool Post: Holds up to four cutting
tools at once that can be individually indexed
to workpiece and quickly moved into position
when needed.

Cross Slide Table (G0769 Only): Supports
workpieces for milling/drilling operations.
Includes T-slots for mounting milling vises or
other fixtures.

Figure 3. Control panel.
A. Feed Direction Dial: Used to select direction
of leadscrew rotation when spindle is rotating
in downward (F) direction. Used to switch
between right or left thread cutting.
B. Spindle Speed Dial: Controls spindle speed.
C. Spindle Speed RPM Display: Shows spindle speed.
D. Spindle Direction Switch: Selects spindle
rotation direction.

K. Compound Rest Handwheel: Moves tool
toward and away from workpiece at preset
compound angle.
L.

Thread Dial: Indicates when to engage the
half nut during threading operations.

M. Half Nut Lever: Engages/disengages half
nut for power feeding and threading operations.
-6-

Model G0768/G0769 (Mfd. Since 8/15)

Tailstock

End Gears, Pulleys, V-Belts
O

U. End Gears: The configuration of the end
gears controls the leadscrew speed for power
feeding, and inch and metric threading.

V.
R

V-Belts: Transfer power from motor to idler
and spindle pulleys. The position of the top
V-belt on idler and spindle pulleys controls
spindle speed.

S
T
Figure 5. Tailstock controls.

U
V

N. Tailstock Quill: Uses an MT#2 taper to hold
centers or other tooling, features a scale on
top.
O. Tailstock Quill Lock Lever: Secures quill
position.
P.

Tailstock Lock Lever: Secures tailstock in
position along bedway.

Q. Graduated Scale: Indicates quill movement
in increments of 0.001", with one full revolution equaling 0.04" of quill travel.
R. Quill Handwheel: Moves quill toward or
away from spindle.
S.

Offset Scale: Indicates relative distance of
tailstock offset from spindle centerline.

Tailstock Offset Screws: Adjusts tailstock
offset left or right from spindle centerline (1 of
2).

Model G0768/G0769 (Mfd. Since 8/15)

Figure 6. End gears, V-belts, and pulleys.

Serious personal injury could occur if
you connect the machine to power before
completing the setup process. DO NOT
connect power until instructed to do so later
in this manual.

-7-

Milling Headstock (G0769 Only)
AB

X
Y
AC
Z
AD
AA
Figure 7. Right side milling headstock controls.
X.

Y.
Z.

Fine Downfeed Handwheel: Provides fine
control over vertical spindle travel to provide
Z-axis control when milling.
Vertical Travel Lock Levers: Locks position
of headstock to column.
Downfeed Selector Knob: Selects between
fine and coarse downfeed modes. Tighten to
engage fine downfeed. Loosen to use coarse
downfeed.

Figure 8. Left side milling headstock controls.
AB. Vertical Handwheel: Raises and lowers
headstock for Z-axis control over spindle
positioning during setups.
AC. High/Low Gearbox Knob: Selects low range
"L" or high range "H" for spindle speed.
AD. Quill Lock Lever: Locks vertical position
of quill (or Z-axis) when tightened. Typically
used in conjunction with spindle downfeed
controls when milling.

AA. Coarse Downfeed Handles: Moves spindle
down quickly when rotated and automatic
spring return brings spindle back up to top
when you release downward pressure on
handles. Typically used for drilling holes or
checking spindle positioning during setups.

-8-

Model G0768/G0769 (Mfd. Since 8/15)

MACHINE DATA
SHEET
Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901

MODEL G0768 8" X 16" VARIABLE‐SPEED LATHE
Product Dimensions:
Weight.............................................................................................................................................................. 144 lbs.
Width (side-to-side) x Depth (front-to-back) x Height........................................................................... 36 x 16 x 14 in.
Footprint (Length x Width)............................................................................................................... 31-1/2 x 10-1/2 in.
Shipping Dimensions:
Type.......................................................................................................................................................... Wood Crate
Content........................................................................................................................................................... Machine
Weight.............................................................................................................................................................. 166 lbs.
Length x Width x Height....................................................................................................................... 36 x 19 x 17 in.
Must Ship Upright................................................................................................................................................... Yes
Electrical:
Power Requirement........................................................................................................... 110V, Single-Phase, 60 Hz
Full-Load Current Rating........................................................................................................................................ 10A
Minimum Circuit Size.............................................................................................................................................. 15A
Connection Type....................................................................................................................................... Cord & Plug
Power Cord Included.............................................................................................................................................. Yes
Power Cord Length................................................................................................................................................. 6 ft.
Power Cord Gauge......................................................................................................................................... 16 AWG
Plug Included.......................................................................................................................................................... Yes
Included Plug Type................................................................................................................................................ 5-15
Switch Type........................................................................................... ON/OFF Push Button Switch w/Safety Cover
Motors:
Main
Type................................................................................................................................. Universal Brush-Type
Horsepower................................................................................................................................ 600W (3/4 HP)
Phase............................................................................................................................................ Single-Phase
Amps............................................................................................................................................................ 10A
Speed................................................................................................................................................ 5250 RPM
Power Transfer .................................................................................................................................. Belt Drive
Bearings..................................................................................................... Shielded & Permanently Lubricated
Main Specifications:
Operation Info
Swing Over Bed..................................................................................................................................... 8-1/4 in.
Distance Between Centers.................................................................................................................. 15-3/4 in.
Swing Over Cross Slide......................................................................................................................... 4-5/8 in.
Swing Over Saddle................................................................................................................................ 6-7/8 in.
Maximum Tool Bit Size............................................................................................................................. 1/2 in.
Compound Travel.................................................................................................................................. 2-1/8 in.
Carriage Travel.................................................................................................................................... 15-3/4 in.
Cross Slide Travel....................................................................................................................................... 3 in.

Model G0768

The information contained herein is deemed accurate as of 9/2/2015 and represents our most recent product specifications.
Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased.

Model G0768/G0769 (Mfd. Since 8/15)

PAGE 1 OF 3

-9-

Headstock Info
Spindle Bore......................................................................................................................................... 0.787 in.
Spindle Taper............................................................................................................................................ MT#3
Number of Spindle Speeds................................................................................................................... Variable
Spindle Speeds..................................................................................................... 50 – 1000, 100 – 2000 RPM
Spindle Type........................................................................................................................ Intrinsic Back Plate
Spindle Bearings......................................................................................................................... Tapered Roller
Spindle Length....................................................................................................................................... 8-5/8 in.
Spindle Length with 3-Jaw Chuck....................................................................................................... 10-5/8 in.
Spindle Length with 4-Jaw Chuck....................................................................................................... 10-5/8 in.
Spindle Length with Faceplate.............................................................................................................. 9-3/4 in.
Tailstock Info
Tailstock Quill Travel................................................................................................................................... 2 in.
Tailstock Taper.......................................................................................................................................... MT#2
Tailstock Barrel Diameter....................................................................................................................... 0.87 in.
Threading Info
Number of Longitudinal Feeds......................................................................................................................... 3
Range of Longitudinal Feeds............................................................................. 0.0037, 0.0068, 0.0071 in./rev.
Number of Inch Threads................................................................................................................................. 15
Range of Inch Threads...................................................................................................................... 9 – 44 TPI
Number of Metric Threads.............................................................................................................................. 12
Range of Metric Threads............................................................................................................... 0.4 – 3.0 mm
Dimensions
Bed Width.................................................................................................................................................... 4 in.
Carriage Leadscrew Diameter.................................................................................................................. 5/8 in.
Leadscrew TPI......................................................................................................................................... 12 TPI
Carriage Leadscrew Length....................................................................................................................... 22 in.
Steady Rest Capacity................................................................................................................... 1/4 – 1-1/4 in.
Follow Rest Capacity.................................................................................................................... 1/4 – 1-1/4 in.
Floor to Center Height........................................................................................................................... 8-1/2 in.
Other
Optional Stand............................................................................................................................. Model T26599
Construction
Base..................................................................................................................................................... Cast Iron
Headstock............................................................................................................................................ Cast Iron
End Gears.................................................................................................................................................. Steel
Bed.......................................................................................................................... Precision-Ground Cast Iron
Paint Type/Finish...................................................................................................................................... Epoxy
Other Specifications:
Country of Origin ................................................................................................................................................ China
Warranty ........................................................................................................................................................... 1 Year
Approximate Assembly & Setup Time .............................................................................................................. 1 Hour
Serial Number Location .................................................................................................................................. ID Label
ISO 9001 Factory .................................................................................................................................................. Yes
CSA, ETL, or UL Certified/Listed ............................................................................................................................ No

Model G0768

-10-

PAGE 2 OF 3

Model G0768/G0769 (Mfd. Since 8/15)

MACHINE DATA
SHEET
Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901

MODEL G0769 8" X 16" LATHE WITH MILLING HEAD
Product Dimensions:
Weight.............................................................................................................................................................. 234 lbs.
Width (side-to-side) x Depth (front-to-back) x Height........................................................................... 36 x 20 x 28 in.
Footprint (Length x Width)............................................................................................................... 31-1/2 x 10-1/2 in.
Shipping Dimensions:
Type.......................................................................................................................................................... Wood Crate
Content........................................................................................................................................................... Machine
Weight.............................................................................................................................................................. 287 lbs.
Length x Width x Height....................................................................................................................... 36 x 23 x 35 in.
Must Ship Upright................................................................................................................................................... Yes
Electrical:
Power Requirement........................................................................................................... 110V, Single-Phase, 60 Hz
Full-Load Current Rating........................................................................................................................................ 10A
Minimum Circuit Size.............................................................................................................................................. 15A
Connection Type....................................................................................................................................... Cord & Plug
Power Cord Included.............................................................................................................................................. Yes
Power Cord Length................................................................................................................................................. 6 ft.
Power Cord Gauge......................................................................................................................................... 16 AWG
Plug Included.......................................................................................................................................................... Yes
Included Plug Type................................................................................................................................................ 5-15
Switch Type........................................................................................... ON/OFF Push Button Switch w/Safety Cover
Motors:
Lathe Spindle
Type................................................................................................................................. Universal Brush-Type
Horsepower................................................................................................................................ 600W (3/4 HP)
Phase............................................................................................................................................ Single-Phase
Amps............................................................................................................................................................ 10A
Speed................................................................................................................................................ 5250 RPM
Power Transfer .................................................................................................................................. Belt Drive
Bearings........................................................................................................... Shielded & Permanently Sealed
Mill Spindle
Type................................................................................................................................. Universal Brush-Type
Horsepower................................................................................................................................ 600W (3/4 HP)
Phase............................................................................................................................................ Single-Phase
Amps............................................................................................................................................................ 10A
Speed................................................................................................................................................ 4800 RPM
Power Transfer ................................................................................................................................. Gear Drive
Bearings........................................................................................................... Shielded & Permanently Sealed

Model G0769

Model G0768/G0769 (Mfd. Since 8/15)

PAGE 1 OF 3

-11-

Main Specifications:
Lathe Info
Swing Over Bed..................................................................................................................................... 8-1/4 in.
Distance Between Centers.................................................................................................................. 15-3/4 in.
Swing Over Cross Slide......................................................................................................................... 4-5/8 in.
Swing Over Saddle................................................................................................................................ 6-7/8 in.
Maximum Tool Bit Size............................................................................................................................. 1/2 in.
Compound Travel.................................................................................................................................. 2-1/8 in.
Carriage Travel.................................................................................................................................... 15-3/4 in.
Cross Slide Travel....................................................................................................................................... 3 in.
Spindle Bore............................................................................................................................ 0.787 in. (20mm)
Spindle Taper............................................................................................................................................ MT#3
Number Of Spindle Speeds................................................................................................................... Variable
Spindle Speeds..................................................................................................... 50 – 1000, 100 – 2000 RPM
Spindle Type........................................................................................................................ Intrinsic Back Plate
Tailstock Quill Travel................................................................................................................................... 2 in.
Tailstock Taper.......................................................................................................................................... MT#2
Number of Longitudinal Feeds......................................................................................................................... 3
Range of Longitudinal Feeds......................................................................... 0.0037", 0.0068", 0.0071" in./rev.
Number of Inch Threads................................................................................................................................. 15
Range of Inch Threads...................................................................................................................... 9 – 44 TPI
Number of Metric Threads.............................................................................................................................. 12
Range of Metric Threads............................................................................................................... 0.4 – 3.0 mm
Mill Info
Mill Taper................................................................................................................................................... MT#2
Mill Spindle Travel................................................................................................................................. 1-3/4 in.
Mill Swing................................................................................................................................................... 13 in.
Distance Spindle To Work Table.......................................................................................................... 9-7/8 in.
Distance Spindle To Bed..................................................................................................................... 11-1/2 in.
Distance Spindle To Center Line........................................................................................................... 7-3/4 in.
Mill Head Vertical Travel...................................................................................................................... 6-5/16 in.
Mill Head Tilt (Left/Right).................................................................................................. Left 45, Right 45 deg.
Maximum Tool Bit Size............................................................................................................................. 1/2 in.
Drilling Capacity For Steel........................................................................................................................ 1/2 in.
Drilling Capacity For Cast Iron.................................................................................................................. 1/2 in.
Table Size Length.................................................................................................................................. 7-1/4 in.
Table Size Width................................................................................................................................... 3-1/8 in.
Table Size Thickness............................................................................................................................ 1-1/8 in.
Number of T-Slots............................................................................................................................................ 2
T-Slot Size................................................................................................................................................ 1/4 in.
T-Slot Centers....................................................................................................................................... 1-1/2 in.
Drawbar Diameter..................................................................................................................................... 3/8 in.
Drawbar TPI............................................................................................................................................. 16 TPI
Drawbar Length..................................................................................................................................... 8-1/2 in.
Number of Mill Drill Speeds.............................................................................................................................. 2
Mill Speed Range...................................................................................................................... 50 – 2000 RPM
Construction
Bed....................................................................................................................................................... Cast Iron
Headstock............................................................................................................................................ Cast Iron
Body..................................................................................................................................................... Cast Iron
End Gears.................................................................................................................................................. Steel
Paint Type/Finish...................................................................................................................................... Epoxy

Model G0769

-12-

PAGE 2 OF 3

Model G0768/G0769 (Mfd. Since 8/15)

SECTION 1: SAFETY
For Your Own Safety, Read Instruction
Manual Before Operating This Machine
The purpose of safety symbols is to attract your attention to possible hazardous conditions.
This manual uses a series of symbols and signal words intended to convey the level of importance of the safety messages. The progression of symbols is described below. Remember that
safety messages by themselves do not eliminate danger and are not a substitute for proper
accident prevention measures. Always use common sense and good judgment.
Indicates an imminently hazardous situation which, if not avoided,
WILL result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided,
COULD result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided,
MAY result in minor or moderate injury. It may also be used to alert
against unsafe practices.

NOTICE

This symbol is used to alert the user to useful information about
proper operation of the machine.

Safety Instructions for Machinery
OWNER’S MANUAL. Read and understand this
owner’s manual BEFORE using machine.
TRAINED OPERATORS ONLY. Untrained operators have a higher risk of being hurt or killed.
Only allow trained/supervised people to use this
machine. When machine is not being used, disconnect power, remove switch keys, or lock-out
machine to prevent unauthorized use—especially
around children. Make workshop kid proof!
DANGEROUS ENVIRONMENTS. Do not use
machinery in areas that are wet, cluttered, or have
poor lighting. Operating machinery in these areas
greatly increases the risk of accidents and injury.
MENTAL ALERTNESS REQUIRED. Full mental
alertness is required for safe operation of machinery. Never operate under the influence of drugs or
alcohol, when tired, or when distracted.
Model G0768/G0769 (Mfd. Since 8/15)

ELECTRICAL EQUIPMENT INJURY RISKS. You
can be shocked, burned, or killed by touching live
electrical components or improperly grounded
machinery. To reduce this risk, only allow qualified
service personnel to do electrical installation or
repair work, and always disconnect power before
accessing or exposing electrical equipment.
DISCONNECT POWER FIRST. Always disconnect machine from power supply BEFORE making
adjustments, changing tooling, or servicing machine.
This prevents an injury risk from unintended startup
or contact with live electrical components.
EYE PROTECTION. Always wear ANSI-approved
safety glasses or a face shield when operating or
observing machinery to reduce the risk of eye
injury or blindness from flying particles. Everyday
eyeglasses are NOT approved safety glasses.

-13-

WEARING PROPER APPAREL. Do not wear
clothing, apparel or jewelry that can become
entangled in moving parts. Always tie back or
cover long hair. Wear non-slip footwear to reduce
risk of slipping and losing control or accidentally
contacting cutting tool or moving parts.
HAZARDOUS DUST. Dust created by machinery
operations may cause cancer, birth defects, or
long-term respiratory damage. Be aware of dust
hazards associated with each workpiece material. Always wear a NIOSH-approved respirator to
reduce your risk.
HEARING PROTECTION. Always wear hearing protection when operating or observing loud
machinery. Extended exposure to this noise
without hearing protection can cause permanent
hearing loss.
REMOVE ADJUSTING TOOLS. Tools left on
machinery can become dangerous projectiles
upon startup. Never leave chuck keys, wrenches,
or any other tools on machine. Always verify
removal before starting!
USE CORRECT TOOL FOR THE JOB. Only use
this tool for its intended purpose—do not force
it or an attachment to do a job for which it was
not designed. Never make unapproved modifications—modifying tool or using it differently than
intended may result in malfunction or mechanical
failure that can lead to personal injury or death!
AWKWARD POSITIONS. Keep proper footing
and balance at all times when operating machine.
Do not overreach! Avoid awkward hand positions
that make workpiece control difficult or increase
the risk of accidental injury.
CHILDREN & BYSTANDERS. Keep children and
bystanders at a safe distance from the work area.
Stop using machine if they become a distraction.
GUARDS & COVERS. Guards and covers reduce
accidental contact with moving parts or flying
debris. Make sure they are properly installed,
undamaged, and working correctly BEFORE
operating machine.

-14-

FORCING MACHINERY. Do not force machine.
It will do the job safer and better at the rate for
which it was designed.
NEVER STAND ON MACHINE. Serious injury
may occur if machine is tipped or if the cutting
tool is unintentionally contacted.
STABLE MACHINE. Unexpected movement during operation greatly increases risk of injury or
loss of control. Before starting, verify machine is
stable and mobile base (if used) is locked.
USE RECOMMENDED ACCESSORIES. Consult
this owner’s manual or the manufacturer for recommended accessories. Using improper accessories will increase the risk of serious injury.
UNATTENDED OPERATION. To reduce the
risk of accidental injury, turn machine OFF and
ensure all moving parts completely stop before
walking away. Never leave machine running
while unattended.
MAINTAIN WITH CARE. Follow all maintenance
instructions and lubrication schedules to keep
machine in good working condition. A machine
that is improperly maintained could malfunction,
leading to serious personal injury or death.
DAMAGED PARTS. Regularly inspect machine
for damaged, loose, or mis-adjusted parts—or
any condition that could affect safe operation.
Immediately repair/replace BEFORE operating
machine. For your own safety, DO NOT operate
machine with damaged parts!
MAINTAIN POWER CORDS. When disconnecting cord-connected machines from power, grab
and pull the plug—NOT the cord. Pulling the cord
may damage the wires inside. Do not handle
cord/plug with wet hands. Avoid cord damage by
keeping it away from heated surfaces, high traffic
areas, harsh chemicals, and wet/damp locations.
EXPERIENCING DIFFICULTIES. If at any time
you experience difficulties performing the intended operation, stop using the machine! Contact our
Technical Support at (570) 546-9663.

Model G0768/G0769 (Mfd. Since 8/15)

Additional Safety for Metal Lathes
The primary risks of operating a Metal Lathe are as follows: You can be seriously injured or
killed by getting entangled in, crushed between, or struck by rotating parts on a lathe. You can
be struck with deadly force by unsecured tools or workpieces attached to rotating objects. To
reduce your risk of serious injury when operating this machine, completely heed and understand
the following:
CLOTHING, JEWELRY & LONG HAIR. Tie back
long hair, remove jewelry, and do not wear loose
clothing or gloves. These can easily get caught on
rotating parts and pull you into lathe.

LONG STOCK SAFETY. Long stock can whip
violently if not properly supported. Always support
any stock that extends from the chuck/headstock
more than three times its own diameter.

ROTATING PARTS. Always keep hands and body
at a safe distance from rotating parts—especially
those with projecting surfaces. Never hold anything against rotating workpiece, such as emery
cloth, that can pull you into lathe.

CLEARING CHIPS. Metal chips can be razor
sharp. Avoid clearing them by hand or with a rag.
Use a brush or vacuum instead.

GUARDING. Guards and covers protect against
entanglement or flying objects. Always ensure they
are properly installed while machine is running.
ADJUSTMENT TOOLS. Remove all chuck keys,
wrenches, and adjustment tools before turning
lathe ON. A tool left on the lathe can become a
deadly projectile when spindle is started.
SAFE CLEARANCES. Before starting spindle,
verify workpiece has adequate clearance by handrotating it through its entire range of motion.
NEW SETUPS. Test each new setup by starting
spindle rotation at the lowest speed and standing
to the side of the lathe until workpiece reaches full
speed and you can verify safe rotation.
SPINDLE SPEEDS. Using spindle speeds that are
too fast for the workpiece or clamping equipment
can cause rotating parts to come loose and strike
nearby people with deadly force. Always use slow
spindle speeds with large or non-concentric workpieces. Never exceed rated RPM of the chuck.
CHUCKS. Chucks can be heavy and difficult to
hold. During installation and removal, protect your
hands and precision bed ways by using a chuck
cradle or piece of plywood over the bed ways. Use
lifting equipment, as necessary, for large chucks.

Model G0768/G0769 (Mfd. Since 8/15)

SECURE WORKPIECE. An improperly secured
workpiece can fly off spindle with deadly force.
Make sure workpiece is properly secured before
starting the lathe.
STOPPING SPINDLE. Always allow spindle to
completely stop on its own, or use a brake, if
provided. Never put hands or another object on a
spinning workpiece to make it stop faster.
CRASHING. A serious explosion of metal parts
can occur if cutting tool or other lathe component
hits rotating chuck or a projecting part of workpiece. Resulting metal fragments can strike nearby
people and lathe will be seriously damaged. To
reduce risk of crashing, ALWAYS release automatic feeds after use, NEVER leave lathe unattended,
and CHECK all clearances before starting lathe.
TOOL SELECTION. Cutting with incorrect or dull
tooling increases risk of injury from broken or dislodged components, or as a result of extra force
required for operation. Always use sharp tooling
that is right for the job.
SANDING/POLISHING. To reduce risk of entanglement, never wrap emery cloth around rotating
workpiece. Instead, use emery cloth with the aid
of a tool or backing board.
MEASURING WORKPIECE. To reduce risk of
entanglement, never measure rotating workpieces.

-15-

Additional Safety for Mills/Drills
The primary risks of operating a mill are as follows: You can be seriously injured or killed by
getting clothing, jewelry, or long hair entangled with rotating cutter. You can be severely cut
or have fingers amputated from contact with the rotating cutter. You can be blinded or struck
by broken cutting tools, metal chips, workpieces, or adjustment tools thrown from the rotating
spindle with great force. To reduce your risk of serious injury when operating this machine,
completely heed and understand the following:
UNDERSTAND ALL CONTROLS. Make sure
you understand the function and proper use of all
controls before starting. This will help you avoid
making mistakes that result in serious injury.
WEAR FACE SHIELD. Always wear a face shield
in addition to safety glasses. This provides more
complete protection for your face than safety
glasses alone.
REMOVE CHUCK KEY & SPINDLE TOOLS.
Always remove chuck key, drawbar wrench, and
other tools used on the spindle immediately after
use. This will prevent them from being thrown by
the spindle upon startup.
PROPERLY SECURE CUTTER. Firmly secure
cutting tool or drill bit so it does not fly out of spindle during operation.
USE CORRECT SPINDLE SPEED. Follow recommended speeds and feeds for each size and
type of cutting tool. This helps avoid tool breakage
during operation and ensures best cutting results.
INSPECT CUTTING TOOL. Inspect cutting tools
for sharpness, chips, or cracks before each use.
Replace dull, chipped, or cracked cutting tools
immediately.
ALLOW SPINDLE TO STOP. To minimize your
risk of entanglement, always allow spindle to stop
on its own. DO NOT stop spindle using your hand
or any other object.

-16-

SECURE WORKPIECE TO TABLE. Clamp workpiece to table or secure in a vise mounted to table,
so workpiece cannot unexpectedly shift or spin
during operation. NEVER hold workpiece by hand
during operation.
CLEAN MACHINE SAFELY. Metal chips or shavings can be razor sharp. DO NOT clear chips
by hand or compressed air that can force chips
farther into machine—use a brush or vacuum
instead. Never clear chips while spindle is turning.
PROPERLY MAINTAIN MACHINE. Keep machine
in proper working condition to help ensure that it
functions safely and all guards and other components work as intended. Perform routine inspections and all necessary maintenance. Never operate machine with damaged or worn parts that can
break or result in unexpected movement during
operation.
DISCONNECT POWER FIRST. To reduce risk of
electrocution or injury from unexpected startup,
make sure mill/drill is turned OFF, disconnected
from power, and all moving parts have come to
a complete stop before changing cutting tools or
starting any inspection, adjustment, or maintenance procedure.
POWER DISRUPTION. In the event of a local
power outage during operation, turn spindle switch
OFF to avoid a possible sudden startup once
power is restored.

Model G0768/G0769 (Mfd. Since 8/15)

Additional Lathe Chuck Safety
ENTANGLEMENT. Entanglement with a rotating chuck can lead to death, amputation, broken
bones, or other serious injury. Never attempt to
slow or stop the lathe chuck by hand, and always
roll up long sleeves, tie back long hair, and remove
any jewelry or loose apparel BEFORE operating.
CHUCK SPEED RATING. Excessive spindle
speeds greatly increase the risk of the workpiece
or chuck being thrown from the machine with
deadly force. Never use spindle speeds faster than
the chuck RPM rating or the safe limits of your
workpiece.
USING CORRECT EQUIPMENT. Many workpieces can only be safely turned in a lathe if additional
support equipment, such as a tailstock or steady/
follow rest, is used. If the operation is too hazardous to be completed with the lathe or existing
equipment, the operator must have enough experience to know when to use a different machine or
find a safer way.
TRAINED OPERATORS ONLY. Using a chuck
incorrectly can result in workpieces coming loose
at high speeds and striking the operator or bystanders with deadly force. To reduce the risk of this hazard, read and understand this document and seek
additional training from an experienced chuck user
before using a chuck.

Model G0768/G0769 (Mfd. Since 8/15)

CHUCK CAPACITY. Avoid exceeding the capacity
of the chuck by clamping an oversized workpiece.
If the workpiece is too large to safely clamp with
the chuck, use a faceplate or a larger chuck if possible. Otherwise, the workpiece could be thrown
from the lathe during operation, resulting in serious
impact injury or death.
CLAMPING FORCE. Inadequate clamping force
can lead to the workpiece being thrown from the
chuck and striking the operator or bystanders.
Maximum clamping force is achieved when the
chuck is properly maintained and lubricated, all
jaws are fully engaged with the workpiece, and
the maximum chuck clamping diameter is not
exceeded.
PROPER MAINTENANCE. All chucks must be
properly maintained and lubricated to achieve
maximum clamping force and withstand the rigors
of centrifugal force. To reduce the risk of a thrown
workpiece, follow all maintenance intervals and
instructions in this document.
DISCONNECT POWER. Serious entanglement or
impact injuries could occur if the lathe is started
while you are adjusting, servicing, or installing the
chuck. Always disconnect the lathe from power
before performing these procedures.

-17-

SECTION 2: POWER SUPPLY
Availability
Before installing the machine, consider the availability and proximity of the required power supply
circuit. If an existing circuit does not meet the
requirements for this machine, a new circuit must
be installed. To minimize the risk of electrocution,
fire, or equipment damage, installation work and
electrical wiring must be done by an electrician or
qualified service personnel in accordance with all
applicable codes and standards.

Electrocution, fire, or
equipment damage may
occur if machine is not
correctly grounded and
connected to the power
supply.

Full-Load Current Rating
The full-load current rating is the amperage a
machine draws at 100% of the rated output power.
On machines with multiple motors, this is the
amperage drawn by the largest motor or sum of all
motors and electrical devices that might operate
at one time during normal operations.
Full-Load Rating...........................................10A
The full-load current is not the maximum amount
of amps that the machine will draw. If the machine
is overloaded, it will draw additional amps beyond
the full-load rating.
If the machine is overloaded for a sufficient length
of time, damage, overheating, or fire may result—
especially if connected to an undersized circuit.
To reduce the risk of these hazards, avoid overloading the machine during operation and make
sure it is connected to a power supply circuit that
meets the specified circuit requirements.

-18-

Serious injury could occur if you connect
machine to power before completing setup
process. DO NOT connect to power until
instructed later in this manual.

110V Circuit Requirements
This machine is prewired to operate on a power
supply circuit that has a verified ground and meets
the following requirements:
Nominal Voltage..................... 110V, 115V, 120V
Cycle...........................................................60 Hz
Phase............................................ Single-Phase
Power Supply Circuit.......................... 15 Amps
A power supply circuit includes all electrical
equipment between the breaker box or fuse panel
in the building and the machine. The power supply circuit used for this machine must be sized to
safely handle the full-load current drawn from the
machine for an extended period of time. (If this
machine is connected to a circuit protected by
fuses, use a time delay fuse marked D.)

For your own safety and protection of
property, consult an electrician if you are
unsure about wiring practices or electrical
codes in your area.
Note: Circuit requirements in this manual apply to
a dedicated circuit—where only one machine will
be running on the circuit at a time. If machine will
be connected to a shared circuit where multiple
machines may be running at the same time, consult an electrician or qualified service personnel to
ensure circuit is properly sized for safe operation.

Model G0768/G0769 (Mfd. Since 8/15)

Grounding & Plug Requirements
This machine MUST be grounded. In the event
of certain malfunctions or breakdowns, grounding
reduces the risk of electric shock by providing a
path of least resistance for electric current.
This machine is equipped with a power cord that
has an equipment-grounding wire and a grounding
plug. Only insert plug into a matching receptacle
(outlet) that is properly installed and grounded in
accordance with all local codes and ordinances.
DO NOT modify the provided plug!
GROUNDED
5-15 RECEPTACLE
Grounding Prong

5-15 PLUG
Neutral Hot

Figure 9. Typical 5-15 plug and receptacle.

Improper connection of the equipment-grounding
wire can result in a risk of electric shock. The
wire with green insulation (with or without yellow
stripes) is the equipment-grounding wire. If repair
or replacement of the power cord or plug is necessary, do not connect the equipment-grounding
wire to a live (current carrying) terminal.
Check with a qualified electrician or service personnel if you do not understand these grounding
requirements, or if you are in doubt about whether
the tool is properly grounded. If you ever notice
that a cord or plug is damaged or worn, disconnect it from power, and immediately replace it with
a new one.

Extension Cords
We do not recommend using an extension cord
with this machine. If you must use an extension
cord, only use it if absolutely necessary and only
on a temporary basis.
Extension cords cause voltage drop, which can
damage electrical components and shorten motor
life. Voltage drop increases as the extension cord
size gets longer and the gauge size gets smaller
(higher gauge numbers indicate smaller sizes).
Any extension cord used with this machine must
be in good condition and contain a ground wire
and matching plug/receptacle. Additionally, it must
meet the following size requirements:
Minimum Gauge Size............................14 AWG
Maximum Length (Shorter is Better).......50 ft.

SHOCK HAZARD!
Two-prong outlets do not meet the grounding
requirements for this machine. Do not modify
or use an adapter on the plug provided—if
it will not fit the outlet, have a qualified
electrician install the proper outlet with a
verified ground.

Model G0768/G0769 (Mfd. Since 8/15)

-19-

SECTION 3: SETUP
Setup Overview

Unpacking

The list below outlines the basic process of setting
up the machine for first-time operation. Specific
steps are covered later in this section.

Your machine was carefully packaged for safe
transportation. Remove the packaging materials
from around your machine and inspect it. If you
discover any damage, please call us immediately
at (570) 546-9663 for advice.

The typical setup process is as follows:
1.

Unpack machine and inventory contents of
box/crate.

Clean machine and its components.

Move machine to an acceptable location.

Assemble machine and make sure it is ready
for operation.

Connect machine to power source.

Test run machine and various safety components to ensure they function properly.

Perform spindle break-in procedure to prepare spindle bearings for operational loads.

Save the containers and all packing materials for
possible inspection by the carrier or its agent.
Otherwise, filing a freight claim can be difficult.
When you are completely satisfied with the condition of your shipment, inventory the contents.

SUFFOCATION HAZARD!
Keep children and pets away
from plastic bags or packing
materials shipped with this
machine. Discard immediately.

Needed for Setup
The following are needed to complete the setup
process, but are not included with your machine.
Description
•
Additional People
•
Safety Glasses
•
Cleaner/Degreaser (Page 22)
•
Quality Metal Protectant
•
Disposable Shop Rags
•
Forklift
•
Lifting Slings (rated for at least 300 lbs.)
•
Mounting Hardware (Page 25)

-20-

Model G0768/G0769 (Mfd. Since 8/15)

Inventory

The following is a list of items shipped with your
machine. Before beginning setup, lay these items
out and inventory them.
If any non-proprietary parts are missing (e.g. a
nut or a washer), we will gladly replace them; or
for the sake of expediency, replacements can be
obtained at your local hardware store.
Installed Components (Figure 10)
Qty.
A. 3-Jaw Chuck 4" w/Internal Jaw Set............. 1
B. Steady Rest................................................. 1
C. 4-Way Tool Post.......................................... 1
D. Drill Chuck 1⁄ 2" w/Chuck Key (G0769)......... 1
E. Milling Headstock (G0769).......................... 1
F. Backsplash.................................................. 1
G. Tailstock....................................................... 1
H. Follow Rest (Not Shown)............................. 1
E

Fuse Set...................................................... 1
— 10A (G0768)............................................ 1
— 15A (G0768)............................................ 1
— 10A (G0769)............................................ 2
— 15A (G0769)............................................ 1
W. Dead Center MT#2 . ................................... 1
X. Dead Center MT#3...................................... 1
Y. Change Gear Set........................................ 1
— Change Gear (20-tooth, Installed).......... 2
— Change Gear (30-tooth, Installed).......... 2
— Change Gear (33-tooth).......................... 1
— Change Gear (40-tooth).......................... 1
— Change Gear (50-tooth).......................... 1
— Change Gear (53-tooth).......................... 1
— Change Gear (55-tooth).......................... 1
— Change Gear (57-tooth).......................... 1
— Change Gear (60-tooth).......................... 1
— Change Gear (63-tooth).......................... 1
— Change Gear (65-tooth).......................... 1
— Change Gear (70-tooth).......................... 1
— Change Gear (71-tooth).......................... 1
— Change Gear (72-tooth).......................... 1
— Change Gear (80-tooth, Installed).......... 2
— Change Gear (84-tooth, Installed).......... 1
Z. 4-Jaw Universal Chuck 4" (Not Shown)...... 1

D
B

F
J

V
U

Figure 10. Installed components (G0769 shown).

W
U

S
Loose Components (Figure 11)
Qty.
I. Chip Pan (Not Shown)................................. 1
J. Toolbox........................................................ 1
K. Oil Bottle for Oil........................................... 1
L. Faceplate 63 ⁄4" ............................................ 1
M. 3-Jaw Chuck External Jaw Set................... 1
N. Hex Wrench Set (2.5, 3, 4, 5, 6mm).......1 Ea
O. Flat Head Screwdriver #2............................ 1
P. Phillips Head Screwdriver #2...................... 1
Q. Spanner Wrench......................................... 1
R. Wrench Set (6/7, 8/10, 14/16mm)................ 1
S. Lathe Chuck Key......................................... 1
T. Square Socket T-Wrench............................ 1
U. Handwheel Handles.................................... 2
Model G0768/G0769 (Mfd. Since 8/15)

T
S
Figure 11. Packaged components.

NOTICE

If you cannot find an item on this list, carefully check around/inside the machine and
packaging materials. Often, these items get
lost in packaging materials while unpacking or they are pre-installed at the factory.
-21-

Cleanup
The unpainted surfaces of your machine are
coated with a heavy-duty rust preventative that
prevents corrosion during shipment and storage.
This rust preventative works extremely well, but it
will take a little time to clean.
Be patient and do a thorough job cleaning your
machine. The time you spend doing this now will
give you a better appreciation for the proper care
of your machine's unpainted surfaces.
There are many ways to remove this rust preventative, but the following steps work well in a wide
variety of situations. Always follow the manufacturer’s instructions with any cleaning product you
use and make sure you work in a well-ventilated
area to minimize exposure to toxic fumes.
Before cleaning, gather the following:
•
Disposable rags
•
Cleaner/degreaser (WD•40 works well)
•
Safety glasses & disposable gloves
•
Plastic paint scraper (optional)

Gasoline and petroleum
products have low flash
points and can explode
or cause fire if used to
clean machinery. Avo i d
u sing t h e s e p r o d u c t s
to c l e a n m a c hin e r y.

Many cleaning solvents
are toxic if inhaled. Only
work in a well-ventilated
area.

NOTICE

Avoid chlorine-based solvents, such as
acetone or brake parts cleaner, that may
damage painted surfaces.
T23692—Orange Power Degreaser
A great product for removing the waxy shipping
grease from your machine during clean up.

Basic steps for removing rust preventative:
1.

Put on safety glasses.

Coat the rust preventative with a liberal
amount of cleaner/degreaser, then let it soak
for 5–10 minutes.

Wipe off the surfaces. If your cleaner/degreaser is effective, the rust preventative will wipe
off easily. If you have a plastic paint scraper,
scrape off as much as you can first, then wipe
off the rest with the rag.

-22-

Figure 12. T23692 Orange Power Degreaser.

Repeat Steps 2–3 as necessary until clean,
then coat all unpainted surfaces with a quality
metal protectant to prevent rust.

Model G0768/G0769 (Mfd. Since 8/15)

Site Considerations
Weight Load

Physical Environment

Refer to the Machine Data Sheet for the weight
of your machine. Make sure that the surface upon
which the machine is placed will bear the weight
of the machine, additional equipment that may be
installed on the machine, and the heaviest workpiece that will be used. Additionally, consider the
weight of the operator and any dynamic loading
that may occur when operating the machine.

The physical environment where the machine is
operated is important for safe operation and longevity of machine components. For best results,
operate this machine in a dry environment that is
free from excessive moisture, hazardous chemicals, airborne abrasives, or extreme conditions.
Extreme conditions for this type of machinery are
generally those where the ambient temperature
range exceeds 41°–104°F; the relative humidity
range exceeds 20%–95% (non-condensing); or
the environment is subject to vibration, shocks,
or bumps.

Space Allocation
Consider the largest size of workpiece that will
be processed through this machine and provide
enough space around the machine for adequate
operator material handling or the installation of
auxiliary equipment. With permanent installations,
leave enough space around the machine to open
or remove doors/covers as required by the maintenance and service described in this manual.
See below for required space allocation.

Electrical Installation
Place this machine near an existing power source.
Make sure all power cords are protected from
traffic, material handling, moisture, chemicals, or
other hazards. Make sure to leave enough space
around machine to disconnect power supply or
apply a lockout/tagout device, if required.

Lighting

Children or untrained people
may be seriously injured by
this machine. Only install in an
access restricted location.

Lighting around the machine must be adequate
enough that operations can be performed safely.
Shadows, glare, or strobe effects that may distract
or impede the operator must be eliminated.

Model G0768

Model G0769
36"

36"
Keep
Workpiece
Loading
Area
Unobstructed

16"

Keep
Workpiece
Loading
Area
Unobstructed

20"

Figure 13. Minimum working clearances.

Model G0768/G0769 (Mfd. Since 8/15)

-23-

Lifting & Placing
HEAVY LIFT!
Straining or crushing injury
may occur from improperly
lifting machine or some of
its parts. To reduce this risk,
get help from other people
and use a forklift (or other
lifting equipment) rated for
weight of this machine.

To balance load for lifting, move tailstock and
carriage to extreme right end of bedway, then
lock them in place.
Note: Before trying to move carriage, make
sure carriage lock is loose and half nut is
disengaged.

Do not attempt to lift or move the machine without using the proper lifting equipment (such as
a forklift or crane) or the necessary assistance
from other people. Refer to Needed for Setup on
Page 20 for details.

Wrap lifting slings around bed and between
leadscrew and bedway, as shown in Figure
14, to help prevent bending leadscrew during
lifting.

Lifting
Sling

To lift and place machine:
1.

Remove shipping crate top and sides, then
remove chip pan, 4-jaw chuck, faceplate, and
toolbox from shipping pallet.
Position chip pan on selected mounting surface and use it as a template to mark hole
locations for mounting hardware (refer to
Leveling & Mounting on Page 25).

Figure 14. Example of lifting sling positions.
6.

Note: To balance the load when lifting, the
lifting strap closest to the headstock must be
slightly shorter than the lifting strap on the
tailstock side. If you are using lifting straps of
equal length, this can be achieved by wrapping the lifting strap on the headstock side
one or more times around the forklift fork, or
by placing a block of wood on the fork to raise
up the ends of the lifting strap.

—If mounting machine to optional T26599
stand (see Accessories on Page 68),
align holes in chip pan with pre-drilled
mounting holes in stand.
3.

Unbolt machine from shipping pallet.

Only use lifting slings and power lifting
equipment rated for at least 300 lbs. and in
good working condition. If machine falls or
tips over while moving it, serious personal
injury and property damage could result.

-24-

Attach lifting slings to forklift forks (or other
power lifting equipment).

Have an assistant hold mill headstock to
steady load, then lift machine just enough to
clear any obstacles and move it to its mounting position.

Properly mount machine as instructed in
Mounting subsection on Page 25.

Model G0768/G0769 (Mfd. Since 8/15)

Mounting
Number of Mounting Holes............................. 2
Diameter of Mounting Hardware................. 5 ⁄ 16"
The chip pan and lathe base have holes that allow
the machine to be mounted to the optional Model
T26599 Stand (see Figure 15) or a workbench.

Follow these guidelines when mounting your
machine to ensure safe and accurate cutting
results:
•

Make sure stand or workbench can adequately support weight of machine and materials, and that it will not move or vibrate during operation.

•

Use a silicon sealant between the machine
base and chip pan to prevent coolant or other
fluids from leaking through onto the stand,
workbench, or floor.
—If mounting machine to a stand, follow the
instructions included with it. Ensure stand
is anchored to floor.
—If mounting machine to a workbench, drill
holes all the way through workbench, and
use hex bolts, washers, and hex nuts to
secure machine in place (see example
below).

Figure 15. T26599 Stand for G0768/G0769.
The T26599 Stand is specifically designed for
the G0768/G0769 and comes with pre-drilled
mounting holes that match the base of these
machines. You MUST mount your machine
to a stand or workbench to prevent it from
unexpectedly moving during operation, which
could lead to personal injury or property damage.

Hex Nut
Lock Washer
Flat Washer
Lathe

Silicon

Chip Pan
Workbench
Flat Washer
Hex Bolt

Figure 16. Example of a "Through Mount" setup.

Model G0768/G0769 (Mfd. Since 8/15)

-25-

Leveling

Assembly
With the exception of the handwheel handles, the
lathe is shipped fully assembled.

For accurate turning results and to prevent
warping the cast iron bed and ways, the
lathe bedways MUST be leveled from sideto-side and from front-to-back on both ends.
Recheck the bedways 24 hours after
installation, two weeks after that, and then
annually to make sure they remain level.
Leveling machinery helps precision components,
such as bedways, remain straight and flat during the lifespan of the machine. The bed on a
lathe that is not level may slowly twist due to the
dynamic loads placed on the machine during
operation.
For best results, use a precision level that is at
least 12" long and sensitive enough to show a
distinct movement when a 0.003" shim (approximately the thickness of one sheet of standard
newspaper) is placed under one end of the level.

Use a flat head screwdriver to attach the handwheel
handles shown in Figure 18.

Cross Slide
Handle

Carriage
Handle
Figure 18. Handwheel handles installed.

See Figure 17 for an example of a high-precision
level.

Figure 17. Grizzly Model H2683 12" Master
Machinist's Level.

-26-

Model G0768/G0769 (Mfd. Since 8/15)

Test Run

Once assembly is complete, test run the machine
to ensure it is properly connected to power and
safety components are functioning properly.
If you find an unusual problem during the test run,
immediately stop the machine, disconnect it from
power, and fix the problem BEFORE operating the
machine again. The Troubleshooting table in the
SERVICE section of this manual can help.

G0769 Only: Set lathe/mill selector switch to
"0" (see Figure 19 on Page on this page).
4.

Feed Direction Dial

LEFT
CENTER
RIGHT
(Clockwise Rotation) (Neutral) (CCW Rotation)
Figure 20. Neutral feed direction dial setting.
5.

To test run machine:
1.

Make sure all tools and objects used during
setup are cleared away from machine.

Press Emergency Stop button cover (see
Figure 19) to prevent unexpected start up.
Spindle Direction
Switch Set to "O"

Shift feed direction dial to neutral (see Figure
20).

Feed
Direction
Lever

Serious injury or death can result from
using this machine BEFORE understanding
its controls and related safety information.
DO NOT operate, or allow others to operate,
machine until the information is understood.

DO NOT start machine until all preceding
setup instructions have been performed.
Operating an improperly set up machine
may result in malfunction or unexpected results that can lead to serious injury,
death, or machine/property damage.

Set spindle direction switch to neutral ("0"
position), and rotate spindle speed dial all the
way counterclockwise.

Make sure chuck and jaws, if installed, are
secure (see Chuck Installation on Page 32).
Note: If a chuck is not installed on the lathe,
you do not need to install one for this test run.

Disengage half nut with lever shown in
Figure 21.

Lathe/Mill
Selector Switch
Half Nut
Lever
Emergency
Stop Button

Spindle Speed
Dial
Figure 19. Headstock controls (G0769 shown).
Model G0768/G0769 (Mfd. Since 8/15)

Disengaged
Half Nut
Lever
Engaged

Figure 21. Half nut lever disengaged.
-27-

Connect machine to power. The spindle
speed RPM display will illuminate.

13. Rotate spindle speed dial all the way counterclockwise.

Press tab in on side of Emergency Stop button and lift switch cover to reset it.

14. Set lathe/mill selector switch to "2" for mill
mode.

Turn spindle direction switch to "F" position.

15. Rotate high/low gearbox knob to low "L" (see
Figure 22).

G0769 Only: Set lathe/mill selector switch to
"1" for lathe mode.
10. Press green ON button, leaving switch cover
open.
11. Slowly rotate spindle speed dial clockwise
until spindle speed display shows 100 RPM.
The spindle should rotate counterclockwise—
down and toward front of lathe.

Note: It may be necessary to rotate spindle
by hand so gears will mesh.

Gearbox
Knob

The machine should run smoothly with little to
no vibration or rubbing noises.
—Strange or unusual noises should be
investigated and corrected before operating machine further. Always disconnect
machine from power when investigating or
correcting potential problems.
12. Press Emergency Stop button to turn lathe
OFF. Then, without resetting Emergency
Stop button, try to restart spindle rotation by
rotating spindle speed dial all the way counterclockwise and then clockwise. The spindle
should not start.
—If the spindle does start with Emergency
Stop button pressed in, the button is not
operating correctly. This safety feature
must operate properly before continuing
operation. Turn spindle speed dial all the
way counterclockwise to stop lathe, disconnect it from power, and call Tech Support
for help.
Model G0768: Congratulations! Test Run is
complete! Now perform the Spindle BreakIn procedure beginning on Page 29.
Model G0769: Continue with remaining test
run instructions.

-28-

Gearbox Knob

L
(Low)

CENTER
(Neutral)

H
(High)

Figure 22. High/low gearbox knob set to low "L".
16. Reset Emergency Stop button.
17. Press green ON button.
18. Rotate spindle speed dial clockwise until
spindle speed display shows 50 RPM.
19. Mill spindle should begin clockwise rotation
(as viewed from top).
20. Press Emergency Stop button.
Congratulations! Model G0769 test run is
complete. Now perform the Spindle BreakIn procedure.

Model G0768/G0769 (Mfd. Since 8/15)

Spindle Break-In

Rotate spindle speed dial all the way counterclockwise, then press Emergency Stop
button.

The spindle break-in procedure distributes lubrication throughout the bearings to reduce the risk
of early bearing failure if there are any "dry" spots
or areas where lubrication has settled in the bearings. You must complete this procedure before
placing operational loads on the spindle for the
first time when the machine is new or if it has
been sitting idle for longer than 6 months.

Set spindle direction switch to "R", then reset
Emergency Stop button.

Press ON button.

Rotate spindle speed dial to 2000 RPM and
run lathe for 10 minutes.

Always start the spindle break-in at the lowest
speed to minimize wear if there are dry spots.
Allow the spindle to run long enough to warm up
and distribute the bearing grease, then incrementally increase spindle speeds and repeat this process at each speed until reaching the maximum
spindle speed. Following the break-in procedure
in this progressive manner helps minimize any
potential wear that could occur before lubrication
is fully distributed.

10. Rotate spindle speed dial all the way counterclockwise, then press Emergency Stop
button.
Congratulations! Lathe spindle break-in is complete.

Mill Spindle Break-In (G0769 Only)
1.

Successfully complete Lathe Spindle BreakIn.

Set spindle direction switch to "F".

Set lathe/mill selector switch to "2" for mill
mode.

Rotate high/low gearbox knob to low "L."

Reset Emergency Stop button.

Press ON button.

Rotate spindle speed dial clockwise to 50
RPM and run spindle for a minimum of 10
minutes.

G0769 Only: Set lathe/mill selector switch to
"1" for lathe mode.

Rotate spindle speed dial all the way counterclockwise.

Press green ON button.

Press Emergency Stop button.

Rotate spindle speed dial until spindle speed
display shows 50 RPM and run lathe for minimum of 10 minutes.

10. Rotate high/low gearbox knob to high "H".

Without stopping lathe, use spindle speed
dial to run lathe at 1000 and 2000 RPM for
10 minutes each.

12. Press ON button.

You must complete this procedure to maintain the warranty. Failure to do this could
cause rapid wear-and-tear of spindle bearings once they are placed under load.

Lathe Spindle Break-In
1.
2.

Successfully complete Test Run procedure
beginning on Page 27.
Reset Emergency Stop button.

Note: If necessary, refer to Setting Spindle
Speed on Page 47 for detailed instructions.
Model G0768/G0769 (Mfd. Since 8/15)

11. Reset Emergency Stop button.

13. Use spindle speed dial to run mill at 1000 and
2000 RPM for 10 minutes each.

-29-

Recommended
Adjustments

14. Rotate spindle speed dial all the way counterclockwise, then press Emergency Stop
button.
15. Repeat Steps 7–10 from Lathe Spindle
Break-In in a similar manner for mill.
Congratulations! Mill spindle break-in is complete.

The following adjustments have been made at the
factory. However, because of the many variables
involved with shipping, we recommend you verify
these adjustments to ensure the best results:
Factory adjustments that should be verified:
•
•
•
•

-30-

Tailstock alignment . ....................... Page 39
Cross slide backlash adjustment......Page 82
Leadscrew backlash.........................Page 82
Gib adjustments.............................. Page 83

Model G0768/G0769 (Mfd. Since 8/15)

SECTION 4: LATHE OPERATIONS
Operation Overview
The purpose of this overview is to provide the novice machine operator with a basic understanding
of how the machine is used during operation, so
the machine controls/components discussed later
in this manual are easier to understand.
Due to the generic nature of this overview, it is
not intended to be an instructional guide. To learn
more about specific operations, read this entire
manual and seek additional training from experienced machine operators, and do additional
research outside of this manual by reading "howto" books, trade magazines, or websites.

To reduce your risk of
serious injury, read this
entire manual BEFORE
using machine.

To reduce risk of eye or face injury from
flying chips, always wear approved safety
glasses and face shield when operating this
machine.

To complete a typical lathe operation, the
operator does the following:
1.

Securely mounts workpiece in lathe.

Puts on safety glasses and a face shield, rolls
up sleeves, removes jewelry, and secures
any clothing, jewelry, or hair that could get
entangled in moving parts.

Installs tooling on toolpost, then backs it
away to establish a safe startup clearance.

Removes all setup tools from lathe.

Checks for safe clearances by rotating
workpiece by hand at least one full revolution.

Moves slides to where they will be used during operation.

If using power feed, selects appropriate feed
rate and direction.

Resets Emergency Stop button and turns
spindle direction switch to "F".

Presses ON button and rotates spindle speed
dial to set correct spindle speed.

10. Uses carriage handwheels or power feed
options to move tooling into workpiece for
operations.
11. When finished turning, rotates spindle speed
dial completely counterclockwise, presses Emergency Stop button, then removes
workpiece.

If you are not experienced with this type
of machine, WE STRONGLY RECOMMEND
that you seek additional training outside of
this manual. Read books/magazines or get
formal training before beginning any projects. Regardless of the content in this section, Grizzly Industrial will not be held liable
for accidents caused by lack of training.

Model G0768/G0769 (Mfd. Since 8/15)

-31-

Chuck & Faceplate
Mounting
This lathe is equipped with an intrinsic backplate
spindle nose. With this type of spindle, a chuck or
faceplate is mounted directly to the backplate with
hex nuts.

Chuck Installation
To ensure accurate work, it is extremely important
to make sure the spindle nose and chuck mating
surfaces are clean. Even a small amount of lint or
debris can affect accuracy.
The chuck is properly installed when it is seated
against the backplate shoulder (see Figure 24).

Never use spindle speeds faster than chuck
RPM rating or safe limits of your workpiece.
This
lathe ships
with speeds
the 3-jaw
chuckincrease
installed.
Excessive
spindle
greatly
This
scroll-type chuck
where
all three
jaws
risk isofa workpiece
or chuck
being
thrown
move
in
unison
when
the
chuck
key
is
used.
from machine with deadly force!

Mounting
Hole

The included 4-jaw chuck features independent
This
chuck
installed.
jaws, lathe
whichships
are with
usedthe
for 3-jaw
square
or unevenlyThis
is
a
scroll-type
chuck
where
all
three
jaws
shaped stock, and to mount work that needs to
be
move
in
unison
when
the
chuck
key
is
used.
adjusted to near zero total indicated runout.
The
included faceplate
4-jaw chuck
The included
hasfeatures
slots forindependent
T-bolts that
jaws,
which
are
used
for
square
or unevenlyhold standard or custom clamping hardware.
With
shaped
stock,
and to mount
worka that
needsoffers
to be
the correct
clamping
hardware,
faceplate
adjusted
to near
indicated
runout. nona wide range
of zero
uses,total
including
machining
concentric workpieces, straight turning between
The
included
faceplate
hasand
slots
for T-bolts that
centers,
off-center
turning,
boring.
hold standard or custom clamping hardware. With
the correct clamping hardware, a faceplate offers
a wide range of uses, including machining nonconcentric workpieces, straight turning between
centers, off-center turning, and boring.

Installation &
Removal Device

Place a piece of plywood over the bedways to protect them from damage if a chuck or other tooling
is dropped (see below).

Shoulder

Inside
Taper
Figure 24. Spindle backplate parts.
Tools Needed:
Qty
Open-End Wrench 13mm................................... 1
Lathe Chuck Key................................................ 1
To install chuck:
1.

DISCONNECT MACHINE FROM POWER!

Use an appropriate device to protect ways
(refer to Installation & Removal Device
subsection).

Thoroughly clean and wipe down all mating
surfaces with a lightly-oiled, lint-free rag.

Plywood Protection
Plate for Chucks
Installed by Hand

Figure 23. Example of common device used
during chuck installation and removal.

-32-

Model G0768/G0769 (Mfd. Since 8/15)

Insert chuck screws through mounting holes
in spindle backplate, as shown in Figure 25.
Make sure chuck seats firmly and evenly
against backplate shoulder.

Scroll Chuck
Clamping
This 3-jaw, scroll-type chuck has an internal scrollgear that moves all jaws in unison when adjusted
with the chuck key. This chuck holds cylindrical
parts on-center with the axis of spindle rotation
and can be rotated at high speeds if the workpiece
is properly clamped and balanced.

Spindle
Backplate

Chuck Screw

Never mix jaw types or positions to
accommodate an odd-shaped workpiece. The
chuck will spin out of balance and may throw the
workpiece! Instead, use an independent jaw chuck
or a faceplate.

Figure 25. Inserting chuck into backplate.
5.

Use a lock washer and hex nut on each
chuck screw to secure chuck (see Figure
26). Tighten hex nuts evenly a small amount
at a time and in multiple steps.
Hex Nut

Insufficient
Jaw Clamping

Safer Inside
Jaw Use

Bar Stock
CORRECT

INCORRECT
Unsafe Jaw Position and
Poor Scroll Gear Engagement
Poor Grip

Safer Outside
Jaw Use

Shallow
Bar Stock

Flat Washer

Unstable
Workpiece

CORRECT

INCORRECT
Unsafe Inside
Jaw Use

Safer Outside
Jaw Use

Figure 26. Chuck secured against backplate.

Poor Scroll
Gear
Engagement

Shallow
Bar Stock

CORRECT

Unsafe Jaw
Position

INCORRECT

Unsafe Jaw Position

Safer Inside
Jaw Use
Cylinder

Poor Scroll
CORRECT Gear Engagement

INCORRECT

Figure 27. Jaw selection and workpiece holding.
Model G0768/G0769 (Mfd. Since 8/15)

-33-

Changing Jaw Set
The 3-jaw scroll chuck included with the lathe
features inside and outside hardened steel jaw
sets (see Figure below), which move in unison to
center a concentric workpiece.
When installing the jaws, it is important to make
sure they are installed correctly. Incorrect installation will result in jaws that do not converge evenly
and are unable to securely clamp a workpiece.

To change jaw set:
1.

DISCONNECT MACHINE FROM POWER!

Use appropriate device to protect ways (refer
to Installation & Removal Device subsection).

Insert chuck key and turn it counterclockwise
to back jaws out and remove them individually in descending order (i.e., 3, 2, 1).

Use mineral spirits to clean debris and grime
from jaws and chuck jaw guides.

Apply thin coat of NLGI #2 grease to surfaces
of removed jaw set. Store in safe place free
from moisture and abrasives.

Rotate chuck key clockwise until you see tip
of outer scroll-gear lead thread about to enter
a jaw guide (see below).
2

Outside Set

Inside Set
1

Figure 28. Chuck and jaw selection.
Jaws are numbered from 1–3 (see Figure below).
The number is typically stamped on the side or
bottom. Jaws are designed to be installed counterclockwise in numerical order in the matching
numbered jaw guides, so they will hold a concentric workpiece evenly.

Jaw Guides

Lead Thread

Figure 30. Lead thread on scroll gear.
7.

Insert jaw #1 into jaw guide #1 and hold jaw
against scroll-gear.

Rotate chuck key clockwise one turn to
engage tip of scroll-gear lead thread into jaw.
Pull jaw; it should be locked into jaw guide.

Install remaining jaws in numerical order, in
the same manner. The jaws should converge
evenly at center of chuck.

Jaw Numbers

Figure 29. Jaw guide and jaw numbers.

-34-

—If jaws do not converge evenly, remove
them. Check that jaw numbers and jaw
guides match. Re-install jaws sequentially
1–3, making sure each one engages with
scroll-gear lead thread during its first rotation.
Model G0768/G0769 (Mfd. Since 8/15)

4-Jaw Chuck

Refer to the Chuck Installation subsection for
instructions on installing the 4-jaw chuck.
The 4-jaw chuck features independently adjustable jaws for holding non-concentric or off-center
workpieces. Each jaw can be independently
removed from the chuck body and reversed for a
wide range of work holding versatility.

Because of dynamic forces involved in
machining a non-concentric or off-center
workpiece, always use a low spindle speed
to reduce risk of workpiece coming loose
and being thrown from lathe, which could
cause death or serious personal injury.

Mounting Workpiece
1.

DISCONNECT MACHINE FROM POWER!

Use an appropriate device to protect ways
(refer to Installation & Removal Device
subsection).

Use chuck key to open each jaw so workpiece will fit into spindle opening and lay flat
against chuck face and jaw steps.

With help from another person or a holding
device, position workpiece so it is centered in
chuck.

Tighten each jaw in small increments. After
tightening first jaw, continue tightening
remaining jaws in an opposing sequence,
similar to sequential order shown below.

Workpiece
Center Point
4

Figure 31. 4-jaw chuck tightening sequence.
6.

After workpiece is secured by jaws, use dial
indicator to make sure workpiece is centered
in chuck.
—If workpiece is not correctly centered,
make fine adjustments by slightly loosening
one jaw and tightening opposing jaw until
workpiece is correctly positioned (see
below for an example).

Figure 32. Example of a non-cylindrical
workpiece correctly positioned on a 4-jaw chuck.

Model G0768/G0769 (Mfd. Since 8/15)

-35-

Faceplate
Refer to the prior Chuck Installation subsection
for instructions on installing the faceplate.
The faceplate included with your lathe can be
used for a wide range of operations, including
machining non-concentric workpieces, straight
turning between centers, off-center turning, and
boring.
The tools needed for mounting a workpiece will
vary depending on the type of setup you have.

Machining non-concentric workpieces at
high speeds could cause workpiece to be
thrown from lathe with deadly force. To
reduce this risk, use a low RPM, and use
counter-weights to balance faceplate or
workpiece.

To mount non-concentric workpiece to faceplate:
1.

DISCONNECT MACHINE FROM POWER!

Use appropriate device to protect ways (refer
to Chuck Safety & Support Devices subsection).

With help from another person or holding
device to support workpiece, position it onto
faceplate and clamp it in place with a minimum of three independent clamping devices
(see below for an example).
Be sure to take into account rotational and
cutting forces that will be applied to workpiece when clamping it to faceplate. If necessary, use counter-weights to balance assembly and use a dial indicator to make sure
workpiece is properly positioned for your
operation.
Non-Cylindrical
Workpiece

Failure to properly secure workpiece to
faceplate could cause workpiece to be
thrown from lathe with deadly force. To
reduce this risk, use a minimum of THREE
independent clamping devices to hold
workpiece onto faceplate.

Clamp
Faceplate
Figure 33. Example of a workpiece clamped in a
faceplate.

-36-

Model G0768/G0769 (Mfd. Since 8/15)

Tailstock
The tailstock is typically used to support long
workpieces at the side opposite the spindle, using
a live or dead center. It can also hold a tapered
drill bit (or a drill chuck with a regular drill bit) for
boring holes. Unlike boring done with a drill press
where the workpiece is fixed and the drill bit
rotates, the drill bit in a tailstock remains stationary while the workpiece is rotated by the spindle.
The entire tailstock can be repositioned and
locked in place along the length of the bed. An
independently controlled offset adjustment allows
the upper part of the tailstock to move perpendicular to the bedways so it can be aligned with
the spindle center (for concentric turning) or offset
from the spindle center (for tapered turning).
The tailstock quill also features independent
adjustment controls that allow it to be advanced
toward the spindle or locked firmly in position.

Quill Lock
Lever

Tailstock Quill Specs
Graduated Dial on Handwheel
Increments.................................................. 0.001"
One Full Revolution...................................... 0.04"
Increments on Quill Scale
Inch ................................ 0"–2" in 1⁄ 8" Increments
Metric .................... 0–50mm in 1mm Increments

Positioning Tailstock
1.

Rotate tailstock lock lever clockwise (facing
machine) to unlock tailstock from bedways.

Slide tailstock to desired position by pushing
it along the bedways.

Rotate tailstock lock lever counterclockwise
to lock tailstock against bedways.

Using Quill
1.

Rotate quill lock lever counterclockwise to
loosen quill.

Turn quill handwheel clockwise to move quill
toward spindle or counterclockwise to move it
away from spindle.

Rotate quill lock lever clockwise to secure
quill.

Tailstock Lock
Lever

Quill

Offset Adjustment
Screw (1 of 2)

Quill
Handwheel

Figure 34. Tailstock controls and features.

Model G0768/G0769 (Mfd. Since 8/15)

-37-

Installing Tooling

To install tooling in tailstock:

The tailstock quill accepts MT#2 tapered arbors
(see the Figures below for examples).

With tailstock locked in place, unlock quill,
then use handwheel to extend it approximately 1".

Thoroughly clean and dry tapered mating
surfaces of quill and center, making sure no
lint or oil remains on tapers.

With a firm and quick motion, insert tool into
quill. Check to see if it is firmly seated by
attempting to twist it—a firmly seated tool will
not twist.

Unlock tailstock and move it until tip of tool
is close to, but not touching, workpiece, then
lock tailstock.

Start spindle rotation, unlock quill lock lever,
then turn quill handwheel clockwise to feed
tool into workpiece.

Solid
End

Open
End

Solid
End

Screw
End

Tang
Tang

Figure 35. Types of tapered arbors and tooling.

Removing Tooling
1.

Use shop rag to hold tool.

Rotate quill handwheel counterclockwise to
fully retract quill into tailstock until tool is
forced out of quill.

Offsetting Tailstock

Figure 36. Example photos of inserting tools into
the tailstock.
Note: If the tooling has an open hole in the end,
then a screw can be threaded into the end of the
tool to provide a solid surface for the quill pin to
push against when the quill is retracted for tool
removal. Otherwise, removal of such tooling may
be difficult.

The tailstock quill can be offset from the spindle centerline for turning tapers. Offsetting quill
toward the front of the lathe results in a taper
at the tailstock end. Conversely, offsetting quill
toward the back of the lathe results in a taper at
the spindle end.
Note: The marks on the offset indicator are arbitrary. For a precise offset, use a dial indicator to
check quill movement while adjusting the screws.
Adjustment
Set Screw (1 of 2)

Offset
Indicator
Figure 37. Left offset adjustment.
-38-

Model G0768/G0769 (Mfd. Since 8/15)

Tools Needed
Qty
Hex Wrench 4mm............................................... 1
To offset tailstock:
1.

Loosen tailstock lock to release clamping
pressure on top and bottom castings.

Rotate adjustment set screws in opposite
directions for desired offset (see below).

Aligning Tailstock to Spindle
Centerline
This is an essential adjustment that should be verified or performed each time the tailstock is used
to turn concentric workpieces between centers
or immediately after offsetting the tailstock when
turning a taper. If the tailstock is not aligned with
the spindle centerline when it is supposed to be,
turning results will be inaccurate along the length
of the workpiece.
Items Needed
Qty
Hex Wrench 4mm............................................... 1
Round Stock 2" x 6"........................................... 2
To align tailstock to spindle centerline:

Turn
CCW

Turn
CW

Turn
CCW

Figure 38. Example of set screw adjustment in
relation to tailstock movement.
3.

Center drill both ends of one piece of round
stock, then set it aside for use in Step 5.

Use another piece of round stock to make
a dead center, and turn it to a 60° point, as
illustrated below.

Tighten tailstock lock to secure the offset.

Figure 39. Turning a dead center.
Note: As long as this dead center remains in the
chuck, the point of the center will remain true to
the spindle centerline. The point will have to be
refinished whenever the center is removed and
then returned to the chuck.

Model G0768/G0769 (Mfd. Since 8/15)

-39-

Install center in tailstock.

Attach a lathe dog to the test stock from Step
1, then mount it between centers, as shown
below.

Use calipers to measure both ends of the
workpiece.
—If test stock is thicker at tailstock end,
move tailstock toward front of lathe 1⁄2 the
distance of the amount of taper, as shown
below.

Move tailstock toward
front of lathe 1/2 the
amount of taper.

Looking down from above.
Figure 40. Example of stock mounted between
the centers.
5.

Turn 0.010" off stock diameter.

Mount a test or dial indicator so plunger is on
tailstock quill.

Figure 41. Adjust tailstock toward the operator.
—If test stock is thinner at tailstock end,
move tailstock toward back of lathe 1⁄2 the
distance of taper amount, as shown below.
Looking down from above.

Move tailstock toward
back of lathe 1/2 the
amount of taper.
Figure 42. Adjust tailstock away from operator.
8.

-40-

Repeat Steps 5–7 until desired accuracy is
achieved.

Model G0768/G0769 (Mfd. Since 8/15)

Centers

Mounting Dead Center in Spindle

Figure 43 shows the MT#2 and MT#3 dead centers included with the lathe.

MT#2 Dead
Center

MT#3 Dead
Center

DISCONNECT MACHINE FROM POWER!

Thoroughly clean and dry all mating surfaces
of spindle bore and center, making sure that
no lint or oil remains on these surfaces.

Mount chuck or faceplate onto spindle, whichever is correct for your operation.

Insert MT#3 center into spindle bore through
chuck or faceplate.
Below is an example photo of a dead center
installed in spindle, using a lathe dog and
faceplate for turning between centers.
Dead Center

Figure 43. Dead centers.

Dead Centers
Dead centers are one-piece, high-speed steel
centers that require low spindle speeds and a
small amount of oil to reduce friction heat that may
damage the workpiece.
Mount the MT#2 dead center (see Figure 43)
in the tailstock. Since the workpiece will rotate
against the center and generate friction, the tip of
the center must be lubricated to avoid premature
wear and maximize smooth operation.
Mount the MT#3 dead center (see Figure 43) in
the spindle for operations where the workpiece
rotates with the center and does not generate
friction.

Model G0768/G0769 (Mfd. Since 8/15)

Lathe
Dog
Figure 44. Example of using a dead center with
a faceplate and lathe dog.

Removing Center from Spindle
To remove the center from the spindle, insert a
piece of round bar stock (or similar tool) through
the outside end of the spindle. Hold onto the center with a gloved hand or shop rag, then tap the
bar stock to knock the center loose.

-41-

Mounting Center in Tailstock

Removing Center from Tailstock

The included #2 dead center or a live center (not
included) can be used in the tailstock. Mounting
instructions are the same for both. The Figure
below shows an example photo of a dead center
mounted in a tailstock.

To remove the center from the quill, hold onto it
with a gloved hand or shop rag, then rotate the
quill handwheel counterclockwise to draw the quill
back into the casting until the center releases.

Dead Center

If
the center does
not come loose
by retracting the
Mounting
Workpiece
Between
quill,
extend
the
quill
to
expose
the
slot shown in
Centers
the Figure below, then use a drift key to remove
1. DISCONNECT MACHINE FROM POWER!
the center.
2.

Drill center holes in both ends of workpiece.

Install MT#3 dead center in spindle with lathe
dog and chuck or faceplate, then install live
center or MT#2 dead center in tailstock.
DISCONNECT LATHE FROM POWER!

1.
4.
2.
Figure 45. Example of using dead center
installed in the tailstock.

To mount center in tailstock:
1.

DISCONNECT MACHINE FROM POWER!

Thoroughly clean and dry tapered mating
surfaces of tailstock quill bore and center,
making sure no lint or oil remains on tapers.

Use quill handwheel to feed quill out from
casting approximately 1".

Lubricate MT#2 dead center point and
Drill center holes in both ends of workpiece.
workpiece center holes, then mount workpiece
between centers and hold it in place with light
Install dead center in spindle with lathe dog
pressure from tailstock center.
and chuck, faceplate or drive plate, then
install live center or carbide-tipped dead center in tailstock.

To avoid premature wear of dead center
4. Lubricate dead center point and workpiece
or damage to workpiece, use low spindle
center holes, then mount workpiece between
speeds and keep tip of dead center mounted
centers and hold it in place with light pressure
in tailstock well lubricated.
from tailstock center.
5.

Seat center firmly into quill by rotating quill
handwheel clockwise to apply pressure
against workpiece (see example below).

Note: The maximum quill travel is 2", but
we do not recommend extending the quill
more than 1" or stability and accuracy will be
reduced.
4.

Insert center into tailstock quill.

Seat center firmly into quill during workpiece
installation by rotating quill handwheel clockwise to apply pressure with center engaged
in center hole of workpiece.
Note: Only apply enough pressure with
tailstock quill to securely mount workpiece
between centers. Avoid overtightening center against workpiece, or it may become
difficult to remove later, and it will result in
excessive friction and heat, which may damage workpiece and center.

-42-

Figure 46. Example photo of a workpiece
mounted between two centers.
Note: Only apply enough pressure to securely
mount the workpiece between centers. Avoid
over-tightening the center against the workpiece,
or it may become difficult to remove later. Also,
over-tightening will result in excessive friction and
heat, which may damage the workpiece or center.

Model G0768/G0769 (Mfd. Since 8/15)

Steady Rest

The steady rest supports long shafts and can
be mounted anywhere along the length of the
bedway. Familiarize yourself with the steady rest
components shown below to better understand
the controls before using it.
Tools Needed for Installation/Removal
Qty
Open-End Wrench 13mm................................... 1
Open-End Wrench 14mm................................... 1

Finger
Lock Nut

Finger
Finger
Adjustment
Adjustment
Knob
Knob

Finger

Lubricate finger tips with an anti-seize lubricant during operation. Note: Mill or file the
tips if they show wear.

Follow Rest
The follow rest mounts to the saddle and supports
the workpiece near the cutting tool to prevent
deflection from the pressure of the cutting tool.
The follow rest fingers adjust in the same manner
as the fingers on the steady rest.
Tip: To reduce the effects of friction, lubricate the
finger tips with generous amounts of anti-sieze
lubricant during operation.
Tool Needed
Qty
Hex Wrench 4mm............................................... 1

Lock
Nut
Clamp
Plate
Figure 47. Steady rest components.
To install and use steady rest:
1.

DISCONNECT MACHINE FROM POWER!

Thoroughly clean all mating surfaces.

Place steady rest base on bedways and
secure with clamp plate, hex bolt, and lock
nut.

Loosen finger lock nuts (see Figure 47), turn
finger adjustment knobs, and adjust fingers
as required for workpiece.

Loosen steady rest lock nut, position steady
rest where required to properly support
workpiece, then secure lock nut.

Turn finger adjustment knobs so fingers are
barely touching workpiece, then tighten finger
lock nuts.

Model G0768/G0769 (Mfd. Since 8/15)

Cap
Screws

Figure 48. Follow rest attachment.

-43-

Compound Rest

Four-Way Tool Post

The compound rest handwheel has an indirectread graduated scale. This means that the distance shown on the scale represents the actual
distance the cutting tool moves. The base of the
compound rest has another graduated scale used
for setting the cutting tool to a specific angle.

The four-way tool post is mounted on top of the
compound rest and allows a maximum of four
tools to be loaded simultaneously.

Graduated Dial
Increments................................ 0.001" (0.025mm)
One Full Revolution...................... 0.05" (1.27mm)
Qty
Tool Needed
Hex Wrench 4mm............................................... 1

Installing Tool
Tool Needed
Qty
Tool Post T-Wrench............................................ 1
To install tool in tool post:

To set compound rest angle:
1.

Each tool can be quickly indexed to the workpiece
by loosening the top handle, rotating the tool
post to the desired position, then retightening the
handle to lock the tool into position.

Loosen cap screws shown in Figure 49.

Adjust tool post bolts so cutting tool can fit
underneath them (see below).

Cutting
Tool
Cap
Screws

Tool Post
Bolt

Angle
Scale
Figure 50. Example of tool mounted in tool post.

Figure 49. Compound rest angle adjustments.
2.

Rotate rest to desired angle, as indicated by
scale at base, then retighten cap screws.
Tip: The first time you set the compound rest
angle for cutting threads, mark the location
on the cross slide as a quick reference point.
This will allow you to quickly return the compound rest to that exact angle the next time
you need to cut threads.

-44-

Over-extending a cutting tool from the post
will increase risk of tool chatter, breakage,
or tool loosening during operation, which
could cause metal pieces to be thrown at
the operator or bystanders with great force.
DO NOT extend a cutting tool more than 2.5
times the width of its cross-section (e.g.,
2.5 x 0.5" = 1.25").
2.

Firmly secure cutting tool with at least two
tool post bolts.

Check and adjust cutting tool to spindle centerline, as instructed in next subsection.
Model G0768/G0769 (Mfd. Since 8/15)

Aligning Cutting Tool with Spindle
Centerline
For most operations, the cutting tool tip should be
aligned with the spindle centerline, as illustrated
below.

Tools Needed
Qty
Tool Post T-Wrench............................................ 1
Steel Shims........................................ As Needed
Cutting Tool........................................................ 1
Tailstock Center.................................................. 1
To align cutting tool with tailstock center:

Cutting
Tool

Spindle
Center
Line

Mount cutting tool in tool post, then secure
post so tool faces tailstock.

Install center in tailstock, and position center
tip near cutting tool tip.

Lock tailstock and quill in place.

Adjust height of cutting tool so tool tip is
aligned vertically with center tip, as illustrated
below.

Figure 51. Cutting tool aligned with spindle
centerline (viewed from tailstock).
There are a number of ways to check and align
the cutting tool to the spindle centerline. If necessary, you can raise the cutting tool by placing
steel shims underneath it. The shims should be
as long and as wide as the cutting tool to properly
support it.
Below are two common methods:
•

•

Move the tailstock center over the cross slide
and use a fine ruler to measure the distance
from the surface of the cross slide to the tip
of the center. Adjust the cutting tool height so
it is the same distance above the cross slide
as the tailstock center.
Align the tip of the cutting tool with a tailstock
center, as instructed in the following procedure. For this to work, the tailstock must
be aligned to the spindle centerline (refer to
Aligning Tailstock To Spindle Centerline
in this manual for detailed instructions).

(Top View)

Tailstock
Center

Cutting
Tool

Tailstock
Center

(Side View)

Figure 52. Cutting tool aligned to the tailstock
center.

Model G0768/G0769 (Mfd. Since 8/15)

-45-

Manual Feed
The cutting tool can be manually fed into the
workpiece using the carriage, cross slide, and
compound rest handwheels shown below.
Carriage
Handwheel

Compound
Rest
Handwheel

Cross Slide
Handwheel
Figure 53. Manual feeding controls.

Carriage Handwheel
Graduated Dial
Increments.................................... 0.01" (0.25mm)
One Full Revolution........................... 1" (25.4mm)
Use the carriage handwheel to move the carriage
left or right along the bed. Adjust the position of
the graduated scale by holding the handwheel
with one hand and turning the dial with the other.

Cross Slide Handwheel
Graduated Dial
Increments..................................0.002" (0.05mm)
One Full Revolution......................0.08" (2.03mm)
Use this handwheel to move the tool toward and
away from the work. The cross slide handwheel
has a direct-read graduated dial, which shows the
total amount of material removed from the diameter of the workpiece.

Compound Rest Handwheel
Graduated Dial
Increments . ............................. 0.001" (0.025mm)
One Full Revolution...................... 0.05" (1.27mm)
Use this handwheel to move the cutting tool linearly along the set angle of the compound rest.
Set the compound rest angle by hand-rotating
it and securing it with the two cap screws (see
Figure 49 on Page 44). The compound rest has
an indirect-read graduated dial.

-46-

Model G0768/G0769 (Mfd. Since 8/15)

Spindle Speed
Using the correct spindle speed is important for
getting safe and satisfactory results, as well as
maximizing tool life.
To set the spindle speed for your operation, you
will need to: 1) Determine the best spindle speed
for the cutting task, and 2) Configure the lathe
controls to produce the required spindle speed.

Setting Spindle Speed Range
One of two spindle speed ranges is selected by
repositioning the top V-belt between the spindle
and idler pulleys (see Figure 55). Select the A
position for low (50-1000 RPM) or B position for
high (100–2000 RPM) speed ranges. The V-belt
diagram below is also found on the headstock.
Qty
Tools Needed
Hex Wrench 4mm............................................... 1
Spindle
Pulley

Determining Spindle Speed
Many variables affect the optimum spindle speed
to use for any given operation, but the two most
important are the recommended cutting speed for
the workpiece material and the diameter of the
workpiece, as noted in the formula shown below.

Figure 54. Spindle speed formula for lathes.
Cutting speed, typically defined in feet per minute
(FPM), is the speed at which the edge of a tool
moves across the material surface.
A recommended cutting speed is an ideal speed
for cutting a type of material in order to produce
the desired finish and optimize tool life.
The books Machinery’s Handbook or Machine
Shop Practice, and some internet sites, provide excellent recommendations for which cutting
speeds to use when calculating the spindle speed.
These sources also provide a wealth of additional
information about the variables that affect cutting
speed and they are a good educational resource.
Also, there are a large number of easy-to-use
spindle speed calculators that can be found on
the internet. These sources will help you take into
account the applicable variables in order to determine the best spindle speed for the operation.

Model G0768/G0769 (Mfd. Since 8/15)

High

Idler
Pulley
Motor
Pulley

Cutting Speed (FPM) x 12

*Double if using carbide cutting tool

Top
V-Belt

*Recommended

Spindle
= Speed
Dia. of Cut (in inches) x 3.14
(RPM)

Low

Figure 55. Belt positioned for low speed.

Setting Spindle Direction & Speed
Set the spindle rotation direction to forward or
reverse with the spindle direction switch, shown
in Figure 56. Reset the Emergency Stop button,
press the ON button, select "1" on the lathe/mill
selector (Model G0769 only) then turn the spindle
speed dial clockwise until the desired spindle
speed displays on the spindle speed RPM display.

Spindle
Direction
Switch

Spindle
Speed Dial

Lathe/Mill Selector
Switch (G0769 Only)

Emergency
Stop
Button
Spindle
Speed RPM
Display

Figure 56. Spindle speed and direction controls.

-47-

Configuration Example

Follow this example to gain a better understanding of how to set the lathe spindle speed.

Move top V-belt to A position (see Figure 58)
to select low speed range (50–1000 RPM).

To set spindle speed to 100 RPM:
1.

DISCONNECT MACHINE FROM POWER!

Open end cover.

Loosen tensioner screw (see Figure 57) to
loosen V-belt tension.
Tensioner
Screw

Figure 57. Location of tensioner screw used for
tightening/loosening V-belts when changing belt
positions.

-48-

Low

High

Top
V-Belt

M
Figure 58. V-belt positioned in low speed range.
5.

Re-tension V-belt (refer to "Tensioning
V-Belts" on Page 81).

Re-install end cover.

Reset Emergency Stop button.

Rotate spindle direction switch to "F" or "R",
and press ON button.

Rotate spindle speed dial clockwise until
spindle speed display reads 100 RPM.

Model G0768/G0769 (Mfd. Since 8/15)

0.0071"

A
C
end
E

0.0037" 0.0068"

Understanding Gear
Charts
This subsection explains how to understand the
feed and thread charts on the headstock. If you do
not understand lathe gear charts, or need a quick
refresher, read this before configuring the end
gears for power feeding or threading operations.

Feed & Thread Charts Label
The feed and thread charts label (see Figure 59)
provides information for setting up end gears for
threading or non-threading operations. The top
displays a feed chart, the bottom displays metric
and inch thread charts.

A B 84 30 72 30

B
Thread Charts—Display headstock
gear
80
33
80
20
C
D
positions used for cutting various
metric or inch
D
threads (see Figure 61).
E F 80

Metric
Thread Chart

mm
AB
CD
EF

0.40 0.50 0.60 0.70 0.80 1.00
55 60 70 57
72 80
80 30 70 33 53 30 60 40 40 30 40 33
80 80 80
80
80 70

1.25 1.50 1.75 2.00 2.50 3.00

A B 53

C D 71 63 7163 20 33 3060 40 71 40 71
E F 60 50 80 84 60 50
Inch Thread
Chart

n/1"
9

Feed & Thread
Charts Label

10 11 12 13 14 16 18

A B 53 57

57 72

C D 80 80 72 8072 70 40 60 40 60 40 60 63
E F 30

33 40

80 60

19 20 22 24 32 40 44

Feed Chart

A B 53

53 72

C D 80 63 80 60 7153 55 4030 55 33 55 30

Thread
Charts

Figure 59. Feed and thread charts label.

55 80

Figure 61. Threading charts.

Feed Chart—Displays headstock end gear positions for different speeds of automatic feed (power
feed) used with turning operations (see Figure
60).

in/
0.0071"

0.0037" 0.0068"

A B 84 30 72 30 B
C D 20 80 33 80 D
80
E F 80
F

A
C
E

Figure 60. Feed
mmchart.

0.40 0.50 0.60 0.70 0.80 1.00

A B 55 60 70 57 72 80
ModelCG0768/G0769
(Mfd.
Since
30 60
40 408/15)
30 40 33
D 80 30 70 33 53
80
80
80
80
80
70
EF

-49-

How to Read the Feed Chart
Figure 62 identifies the three available feed rates
and the feed icon at the top of the feed rate chart.

in/ gears in two posiEach shaft has room to mount
tions—forward and rear (see Figure 64).
0.0071"
0.0037" 0.0068"

Feed Rate
Icon

in/

Feed Rates

0.0071"
0.0037" 0.0068"

A B 84 30 72 30 B
C D 20 80 33 80 D
E F 80

A
C
E

Spindle
Gear

in/
0.0071"
0.0037" 0.0068"

A B 84 30 72 30 B
C D 20 80 33 80 D
80
E F 80
F

Blank Area Indicates
Spacer (Not Shown)

Rear

Figure 64. Forward and rear gear positions.

Figure 63 identifies the end gears on the upper,
middle, and lower shafts, and the 40-tooth (40T)
spindle gear. The gears are represented by letters
in the columns and the diagram.

Columns

A
C

Forward

Figure 62. Chart displays the three feed rates.

Upper
Shaft
Gears

A B 84 30 72 30 B
C D 20 80 33 80 D
80
E F 80
F

A
C
E

Lower Shaft Gears
Middle Shaft Gears
Figure 63. Identification of upper, middle and
lower shaft gears.

Both positions must be filled for the gears to work
properly. This also applies to "blank" areas on the
chart, such as the one right of the 80T (E) gear
in Figure 64 (the dashed box is used for identification only). A spacer should be installed in this
position on the shaft. A spacer is not listed on
the chart because the chart only reflects ACTIVE
gear positions.

in/

0.0071"

The lines shown between the numbers in Figure
65 identify which gears mesh.

0.0037" 0.0068"

A B 84 30 72 30 B
C D 20 80 33 80 D
80
E F 80
F
Gear Mesh
Lines

Figure 65. Lines indicate which gears mesh.

For example, to set the feed rate for 0.0037 in./
rev., mesh the 30T (B) gear with the 80T (D) gear,
and mesh the 20T (C) gear with the 80T (E) gear.

-50-

Model G0768/G0769 (Mfd. Since 8/15)

How to Read the Thread Charts

Each shaft has room to mount gears in two positions—forward and rear (see Figure 69).

Figure 66 identifies the charts to use when setting carriage feed movement for metric or inch
threading.
mm

Metric Icon
Indicating
Thread Pitch

Forward
Gears

0.40 0.50 0.60 0.70 0.80 1.00

A B 55 60 70 57 72 80
C D 80 30 70 33 53 30 60 40 40 30 40 33
E F 80 80 80 80 80 70

Rear
Gears

1.25 1.50 1.75 2.00 2.50 3.00

A B 53 57 80 63 63 70
C D 71 63 7163 20 33 3060 40 71 40 71
E F 60 50 80 84 60 50

Inch Icon
Indicating
Threads per
Inch (TPI)

9Spacer
10 11 12 13 14 16 18
A B 53 57

n/1"
9

10 11 12 13 14 16 18

A B 53 57

57 72

33 40

E F 30

80 60

53 72

C D 80 63 80 60 7153 55 4030 55 33 55 30
EF

55 80

A B 53

Rear
Threads
Per Inch C D
(TPI)
EF

10 11 12 13 14 16 18
55

57 72

33 40

53 72

80 60

55 80

80 60

53 72

55 80

Blank Area Indicates
Spacer (Not Shown)

Both positions must be filled for the gears to work
properly. This also applies to the "blank" areas on
the chart, such as the one left of the 50T (F) gear
shown in Figure 69. A spacer should be installed
in this position on the shaft. A spacer is not listed
because chart only reflects ACTIVE gear positions.

C D 80 63 80 60 7153 55 4030 55 33 55 30
EF

Figure 69. Identification of forward and rear gear
positions.

19 20 22 24 32 40 44
A B 53

Forward

80 80 72 80 72 70 40 60 40 60 40 60 63
30

33 40
60

The shaded boxes in Figure 67 show the threads
per inch (TPI) on the applicable chart.

C D 80 63 80 60 7153 55 4030 55 33 55 30

Figure 66. Icons indicate inch or metric threads.

A B 53 57

19 20 22 24 32 40 44

19 20 22 24 32 40 44
A B 53

57 72

C D 80 80 72 8072 70 40 60 40 60 40 60 63

C D 80 80 72 8072 70 40 60 40 60 40 60 63
E F 30

Figure 67. Numbers in shaded boxes indicate
the TPI or threads per inch.
Figure 68 identifies the end gears on the upper,
middle, and lower shafts. The gears are represented by letters.
Upper
Upper Shaft
Shaft Gears
Gears
Middle Shaft Gears
Lower Shaft Gears

Because there is only one spacer, on some
setups smaller gears must be used as spac10 11 12 13 14 16
18 the adjustable gears.
ers on

A B 53 57

57 72

C D 80 80 72 8072 70 40 60 40 60 40 60 63
E F 30

33 40

80 60

19 20 22 24 32 40 44
A B 53

53 72

C D 80 63 80 60 7153 55 4030 55 33 55 30
EF

55 80

Figure 68. Identification of gears on shafts.

Model G0768/G0769 (Mfd. Since 8/15)

-51-

Primary Threading Configuration

The lines shown between the numbers in Figure
70 indicate which gears should be in mesh.

9
Gear Mesh
Lines

This threading configuration is used for inch and
metric threading. Mesh the A and C, and D and F
gears, as shown in Figure 72. The A/B and C/D
change gears each share a keyed bushing. A
spacer
72 (E)63is installed
72 on the
57 lower shaft in front
of the F gear.

10 11 12 13 149 1610 1811

A B 53 57

12 13 14

57 72

C D 80 80 72 80 72 70 40
60726380 72 70
C60D40 60
80 4080
30
33 40
65
70
80 Gear
60
E F 30
33 40
E F 30 A30

40 60 40
65

19 20 22 24 32 40 44B Gear

Figure 70. Lines between numbers indicate
gears that should be in mesh.

60
53 72
A lathe
B 53to cut 953TPI (threads
For example, to set the
per inch), mesh the 80T (C) gear with the 53T (A)
80 63 80 60 71 53
and 30T (E) gears. C D

End Gears

55 80

30 B
A B 84 30 72
C Gear
C D 20 80 33 80 D
D Gear
80
E F 80
F
F (Spacer)
E Gear
Figure 71. Power feed change gear
configuration.

53 72

C80D 808063 80
80 60 71 53 55 4030 55
50

F Gear

55 80

Secondary Threading Configuration
This threading configuration is used for a different range of inch threads. Mesh the A, C, and E
gears, as shown in Figure 73. The A/B, and C/D
gears each share a keyed bushing. The B and D
gears (e.g. 20T or 30T) function as spacers since
they do not mesh with other gears. A spacer (F)
is installed on the lower shaft behind the E gear.

A
C
E

A Gear

B Gear
10
11 12 13 14

A B 53 57C Gear55

57 72

Gear80 72 70
C D 80 80D72
40 60 40

E F 30

33 40

F (Spacer)

19 20
22 24 32 4
E Gear
A B 53

53 72

Figure 73. Secondary threading configuration.
-52-

Figure 72. Primary threading configuration.

A Gear

0.0037" 0.0068"

E (Spacer)

The end gears are preset by the factory in this
configuration, which is used for power feeding.
Mesh the B and D gears and the C and E gears
(see Figure 71). A spacer (F) is installed on the
lower shaft behind the E gear.

C Gear

Power Feed Configuration

B Gear

1970 20 22 24 32 4

A B55 33 55 30
55 4030
D Gear

This section explains how to configure end gears
for power feeding and threading operations.

0.0071"

Model G0768/G0769 (Mfd. Since 6/14)

C D 80 63 80 60 71 53 55 4030 55

Configuring End Gears

Follow the example below to understand how
to change the gears from the factory set power
feed configuration to the primary
inch threading
in/
configuration. Concepts are similar to those for
setting up gears for power feeding.

Adjuster

0.0071"

A
Note: Many of0.0037"
the 0.0068"
techniques and concepts
explained here also apply to setting up gears
C for
A B 84 30 72 30 B
power feeding.
E
C D 20 80 33 80 D
Tools Needed
Qty
80
E F 80
F
Hex Wrench 5mm..........................................1
Ea
Open-End Wrenches 6, 14, 17mm................1 Ea
mm
Punch.................................................................
1
Hammer.............................................................. 1

Gear
Shafts

20 TPI

n/1"
9

10 11 12 13 14 16 18

A B 53 57

57 72

Adjuster Cap
Screw

Figure 75. Adjuster cap screw location.
6.

Remove hex nuts, e-clips, and flat washer
that secure gears (see Figure 75).

Loosen top and bottom gear shafts to make it
easier to remove gears in following steps.

Slide 80T and 84T gears off shafts, then
remove middle C/D (20T/80T) gear and shaft
(see Figure 76).

1.25 1.50 1.75 2.00 2.50 3.00

53 TPI
57 on80 thread
63
63
A B20
chart70 shown in
Locate
71 63 7163 20 33 3060 40 71 40 71
C D74.
Figure
E F 60 50 80 84 60 50

Hex Nut &
E-Clips

Hex Nut &
Flat Washer

0.40 0.50 0.60 0.70 0.80 1.00

70 for5720 TPI:
72 80
A B 55end60gears
To configure
C D 80 30 70 33 53 30 60 40 40 30 40 33
80 80
80
80 POWER!
70
E F 80 MACHINE
1. DISCONNECT
FROM

Loosen adjuster cap screw shown in Figure
75, and pivot adjuster down to disengage
gears.

C D 80 80 72 8072 70 40 60 40 60 40 60 63
E F 30

33 40

80 60

19 20 22 24 32 40 44
A B 53

53 72

C D 80 63 80 60 7153 55 4030 55 33 55 30
EF

55 80

Gears and Positions Needed
Figure 74. Gear positions for 20 TPI on thread
chart.
3.

Gather 53T, 80T, 60T, and 50T gears. (The
80T gear may already be installed.)

Remove end gear cover.

Model G0768/G0769 (Mfd. Since 6/14)

80T Gear

20T/80T Gear

84T Gear

Figure 76. Gear removal identification.
Tip: Hold middle shaft T-nut in adjuster while
removing 20T/80T gear so T-nut does not fall off.

-53-

Remove keyed spacer from lower gear shaft
(see Figure 77).

12. Remove 20T gear with keyed bushing from
80T gear (see Figure 80).
Keyed Bushing

Keyed
Spacer

80T Gear

Shaft

20T Gear

Figure 77. Location of keyed spacer.
10. Slide 50T gear onto lower shaft with hub
facing in, re-install keyed spacer and flat
washer, then thread on hex nut finger-tight,
for now (see Figure 78).
Hex Nut

Flat Washer

50T Gear

Figure 80. 20T gear removed from 80T gear.
13. Remove keyed bushing from 20T gear.
14. Connect 80T and 60T gear with keyed bushing, as shown in Figure 81. The 80T gear
hub faces out; the 60T gear hub faces the
80T gear.
60T Gear

Bushing

Hub

Keyed Spacer
Figure 78. 50T gear installed on lower shaft.
11. Remove gear shaft from middle C/D (20T/80T)
gear (see Figure 79).

Shaft

Front View

80T Gear

Rear View

Figure 81. 80T and 60T gears connected.
15. Put dab of NLGI #2 grease onto 80T/60T
gear shaft, then insert longer end of shaft into
gear (see Figure 82).

Shaft

Figure 79. Shaft removed from 20T/80T gear.
Figure 82. Shaft installed into 80T/60T gears.
-54-

Model G0768/G0769 (Mfd. Since 8/15)

16. Thread short end of 80T/60 gear shaft into
T-nut on adjuster until finger tight (see Figure
83).

T-Nut

20. Re-install e-clips and hex nuts onto middle
and top gear shafts.
21. Adjust lash between meshed gears so it
is approximately 0.003", then tighten gear
shafts and fasteners.
22. Swing adjuster up and mesh 53T gear with
40T spindle gear (see Figure 86).

Spindle Gear
53T Gear
Figure 83. 80T/60T gear threaded onto T-nut.
17. Remove 30T gear with keyed bushing from
84T gear.

Adjustor Cap
Screw

18. Install 30T gear with keyed bushing onto 53T
gear (see Figure 84). Hub of 53T gear should
face 30T gear.

Figure 86. 53T gear meshed with spindle gear.
30T Gear
Keyed
Bushing
53T Gear

23. Secure adjuster cap screw.
24. Re-install end gear cover. The end gears are
now configured for 20 TPI.

Figure 84. 53T/30T gears assembled.
19. Put a dab of grease on upper shaft, then slide
53T/30T gear on, as shown in Figure 85.

53T/30T Gear

Figure 85. 53T/30T gear installed on upper
shaft.
Model G0768/G0769 (Mfd. Since 8/15)

-55-

Power Feed

B. Feed Rate Chart: Displays end gear settings
for selected feed rate (see Figure 88).

The carriage has power feed (or automatic feed)
options for threading or non-threading operations.
This section describes how to use the power feed
option for non-threading operations. To learn how
to power the carriage for threading operations,
refer to Threading on Page 58.

To avoid damaging lathe, NEVER allow
cutting tool to run into chuck! ALWAYS
make sure spindle is completely stopped
BEFORE using headstock controls to make
changes.

Power Feed Controls
Use the following descriptions and figures to
understand the power feed controls.
Before using power feed, you may have to reconfigure the end gears, depending on how they are
set up (refer to Power Feed Configuration on
Page 52). The lathe comes from the factory with
the end gears set up in the power feed configuration.
A. Spindle Direction Switch: Enables forward
or reverse carriage travel when feed direction
dial and half nut lever are engaged. The carriage will not move when the switch is in the
"0" position.

in/
40

0.0071"
0.0037" 0.0068"

A B 84 30 72 30 B
C D 20 80 33 80 D
80
E F 80
F

A
C
E

Figure 88. Feed
mmchart.
C. Feed Direction
carriage
0.40 0.50Dial:
0.60 Selects
0.70 0.80
1.00 travel
direction
without
changing
direction
A B 55 60 70 57 72 80 of headstock
moves
left when
80 30 70The
33 53carriage
30 60 40 40
30 40 33
C Drotation.
feed direction dial is turned right, half nut
E F 80 80 80 80 80 70
lever is engaged, and spindle direction switch
1.25 1.50 1.75 2.00 2.50 3.00
is set to53
"F". 57 80 63 63 70

AB
71 63 7163 20 33 3060 40 71 40 71
TheC D
carriage moves right when the feed
60 is 50
80 to the
84 left.
60 The
50carriage
E
F
direction dial
turned
will not move when the lever is in the center
n/1"
position.
10 11direction
12 13 reverses
14 16 18
Carriage9 travel
when the
57
55
57
72
63
72
57
53
A
B
spindle direction switch is set to "R".
C D 80 80 72 8072 70 40 60 40 60 40 60 63
E F 30

33 40

80 60

19 20 22 24 32 40 44
A B 53

53 72

60 7153 55 4030 55 33 55 30
C D 80 63 80C

55 80

B
Figure 89. Feed direction dial.

Figure 87. Spindle switch and feed rate chart.

-56-

Model G0768/G0769 (Mfd. Since 8/15)

D. Half Nut Lever: Engages/disengages half
nut for power feed operations.

Gather the required A–F change gears: 84T,
30T, 20T and two 80T gears, based upon the
chart in Figure 91.

Remove end cover.

Loosen adjuster cap screw shown in Figure
92, and pivot adjuster down to disengage
gears.

Figure 90. Half nut lever.
Adjustor Cap
Screw
To avoid potential carriage/chuck crash,
disengage half nut lever immediately after
completing power feed operations.

Setting Power Feed Rate
Follow the example below to better understand
how to set the lathe power feed.
Tools Needed:
Hex Wrenches 4, 5mm..................................1 Ea
Open-End Wrenches 13, 14mm....................1 Ea
To set power feed rate to 0.0037 in/rev.:
1.

DISCONNECT MACHINE FROM POWER!

Locate the 0.0037 in./rev. column heading on
the feed rate chart, as shown in Figure 91.

Figure 92. Adjustor cap screw location.
6.

Remove hex nuts, e-clips, and flat washers
that secure existing gears.

Replace A/B gear with 84T and 30T gears,
replace C/D gear with 20T and 80T gears,
and install spacer with 80T gear on bottom
shaft (see Figure 93).
A Gear

0.0071"
B Gear

0.0037" 0.0068"

0.0037 in./rev.
Change
Gears

in/
0.0071"
0.0037" 0.0068"

A B 84 30 72 30 B
C D 20 80 33 80 D
80
E F 80
F

A
C
E

F (Spacer)
E Gear

Figure 91. Change gears mm
for 0.0037 in./rev. on
feed chart.
0.40 0.50 0.60 0.70 0.80 1.00
70 Since
57
72
A B 55 60 (Mfd.
Model G0768/G0769
8/15)80

C D 80 30 70 33 53 30 60 40

30 B
A B 84 30 72
C Gear
C D 20 80 33 80 D
D Gear
80
E F 80
F

40 30 40 33

Figure 93. Power feed change gear
configuration.
-57-

A
C
E

Adjust lash between meshed gears so it is
approximately 0.003", then tighten the gear
shafts.

Swing the adjuster up and mesh the 84T gear
with the spindle gear.

10. Secure the adjuster cap screw.

To set lathe to thread 20 TPI right-hand
threads:
1.

Configure gears as instructed in End Gear
Configuration Example on Page 53.

Place the top V-belt in the A position for low
(50-1000 RPM), as shown in Figure 94.

11. Re-install end gear cover. The lathe is now
set for a power feed rate of 0.0037 in./rev.

Low

Headstock Threading Controls

Top
V-Belt

Threading
The following subsections describe how to use
the threading controls and charts to set up the
lathe for a threading operation. If you are unfamiliar with how to cut threads on a lathe, we strongly
recommend that you read books, review industry
trade magazines, or get formal training before
attempting any threading projects.

High

M
Figure 94. Top V-belt in "A" position.
3.

Move the feed direction dial to the right (see
Figure 95). The lathe is now set up to cut 20
TPI threads.

The threading chart on the headstock face displays the settings for inch and metric threading.
Using the controls on the lathe, follow the example below to understand how to set up the lathe
for the desired threading operation.

Feed
Direction
Lever

Feed Direction Dial

LEFT
CENTER
RIGHT
(For LH threads) (Neutral) (for RH threads)
Figure 95. Feed direction dial setting.

-58-

Model G0768/G0769 (Mfd. Since 8/15)

Apron Threading Controls

Thread Dial Chart

The half nut lever engages the carriage with the
leadscrew, which moves the carriage and cutting
tool along the length of the workpiece for threading operations (see Figure 96).

The thread dial chart is located on the headstock,
as shown in Figure 96.

Thread Dial
Chart

Find the TPI (threads per inch) that you want to
cut on the thread dial chart (see Figure 97), then
reference the scale number to the right. The scale
numbers indicate when to engage the half nut for
a specific thread pitch as indicated by the thread
dial.

INDICATOR TABLE

Thread Dial

Disengaged

Engaged

Figure 96. Apron threading controls.

Thread Dial
The numbers on the thread dial (Figure 96) are
used with the thread dial chart to show when to
engage the half nut during inch threading.

Figure 97. Thread dial chart.
The following examples explain how to use
thread dial and thread dial chart.
TPI Divisible by 3: Use any line on the thread dial
(see example in Figure 98).
TPI

Dial Number

9, 12, 18, 24

1–8

Thread Dial

Note: The thread dial is not used for metric
threading. For that type of operation, you must
leave the half nut engaged from the beginning
until turning is complete.

All Others

1-8
1-8
1, 4, 7

Half Nut
Lever

SCALE
1-8
1-8

Half Nut
Lever

TPI
9
12
18
24

Figure 98. Dial positions for threading TPI
divisible by 3.
All Other TPI: Use lines 1, 4 or 7 (see example
in Figure 99).

Model G0768/G0769 (Mfd. Since 8/15)

10, 11, 13, 14, 16,
19, 20, 22, 32, 40, 44

Thread Dial

1, 4, 7

When the first cutting pass is complete, the operator disengages the carriage from the leadscrew
using the half nut lever. The operator returns the
carriage for the next pass and re-engages the half
nut using the same thread dial setting to resume
the cut in the previous pass.

Dial Number

TPI

When threading, use slowest speed possible and avoid deep cuts, so you are able to
disengage half nut when required to prevent
a carriage crash!

Figure 99. Dial positions for other TPI.

-59-

SECTION 5: MILL OPERATIONS
Operation Overview
The purpose of this overview is to provide the novice machine operator with a basic understanding
of how the machine is used during operation, so
the machine controls/components discussed later
in this manual are easier to understand.
Due to the generic nature of this overview, it is
not intended to be an instructional guide. To learn
more about specific operations, read this entire
manual and seek additional training from experienced machine operators, and do additional
research outside of this manual by reading "howto" books, trade magazines, or websites.

To reduce your risk of
serious injury, read this
entire manual BEFORE
using machine.

To reduce risk of eye or face injury from
flying chips, always wear approved safety
glasses and face shield when operating this
machine.

-60-

To reduce risk of injury and increase
longevity of machine, always start spindle
rotation with spindle speed dial set to lowest setting.
To complete a typical milling operation, the
operator does the following:
1.

Puts on personal protective equipment.

Securely clamps workpiece to cross slide
table.

With machine disconnected from power,
installs correct tooling.

Adjusts mill headstock height.

Selects correct gear setting on milling headstock gearbox for desired speed range.

Connects machine to power.

Rotates spindle speed dial to lowest setting,
and resets Emergency Stop button.

Presses ON button, turns spindle direction
switch to "F", and rotates spindle speed dial
to correct spindle speed.

Uses spindle downfeed and table controls to
perform operation.

10. Presses Emergency Stop button and waits
for spindle to completely stop before removing workpiece, changing tooling, or changing
spindle speeds.

Model G0768/G0769 (Mfd. Since 8/15)

Removing
Compound Rest
The compound rest and tool post must be removed
before milling/drilling so the cross slide table can
be used as the milling table.

Re-installing Compound Rest
Align compound rest with swivel base mounting
holes and nut (see Figure 101), then secure with
cap screws previously removed.
Note: While re-installing compound rest, use a
3mm hex wrench to press swivel base up from
underneath and keep it from sliding back down
into cross slide.

Tools Needed
Qty
Hex Wrench 3mm............................................... 1
Hex Wrench 4mm............................................... 1

Removing Compound Rest
Remove the two cap screws that secure compound rest (see Figure 100), then remove it.

Mounting
Holes
Nut

Cap Screws

Figure 101. Swivel base components.

Figure 100. Location of compound rest cap
screws.

Model G0768/G0769 (Mfd. Since 8/15)

-61-

Headstock
Movement

Tilting Headstock
Tools Needed
Qty
Wrench 16mm.................................................... 1
Wrench 14mm.................................................... 1

The milling headstock moves in the following
ways:
•
•

Travels up and down the column (Z-axis).
Tilts 45° left or right relative to the table.

To tilt headstock:
1.

DISCONNECT MACHINE FROM POWER!

Support headstock with one hand, then loosen headstock center bolt and angle lock nut
(see Figure 104).

Raising/Lowering Headstock
1.

DISCONNECT MACHINE FROM POWER!

Loosen both Z-axis lock levers shown in
Figure 102.

Center
Bolt

Tilt Scale

Z-Axis
Lock
Levers

Figure 102. Location of Z-Axis lock levers.
3.

Angle
Lock Nut

Figure 104. Headstock tilt controls.
3.

While viewing tilt scale, rotate headstock to
required angle, then retighten center bolt and
angle lock nut to secure headstock.

Use vertical handwheel shown in Figure 103
to adjust headstock height.

Vertical
Handwheel

Figure 103. Location of Z-Axis handwheel.
4.

-62-

Retighten lock levers.

Model G0768/G0769 (Mfd. Since 8/15)

Table Travel
The cross slide table travels in two directions, as
illustrated in Figure 105:
•
•

X-axis (longitudinal)
Y-axis (cross)
X-Axis or Longitudinal Travel (Left & Right)
Y-Axis or
Cross Travel
(In & Out)
Figure 105. Possible directions of cross slide
travel.

Carriage Handwheel (X-Axis)
Graduated Dial
Increments.................................... 0.01" (0.25mm)
One Full Revolution........................... 1" (25.4mm)
Use the carriage handwheel to move the carriage
left or right along the bed. Adjust the position of
the graduated scale by holding the handwheel
with one hand and turning the dial with the other.

Cross Slide Handwheel (Y-Axis)
Graduated Dial
Increments..................................0.002" (0.05mm)
One Full Revolution......................0.08" (2.03mm)
Use this handwheel to move the cross slide table
toward or away from the tooling. The cross slide
handwheel has a direct-read graduated dial,
which will read twice the actual table cross feed
travel.

These movements are controlled by the carriage
handwheel and cross slide handwheel, (see
Figure 106).

Carriage
Handwheel
(X-Axis)

Cross Slide
Table

Cross Slide
Handwheel
(Y-Axis)
Figure 106. Table travel controls.

Model G0768/G0769 (Mfd. Since 8/15)

-63-

Using Spindle
Downfeed Controls
The Model G0769 features two different types of
spindle downfeed controls: coarse and fine, as
shown in Figure 107.

Fine
Downfeed
Handwheel

Coarse
Downfeed
Handle

Fine Downfeed
Fine downfeed is typically used for milling applications, because the spindle only moves up or down
when the fine downfeed handwheel (see Figure
107) is rotated (there is no automatic spindle
return to the top position, as with the coarse
downfeed controls). This allows the spindle height
to be locked in place for precise Z-axis positioning
of a cutter or end-mill when milling a flat surface
across the face of a workpiece. In order to ensure
the milled surface remains flat, the spindle height
cannot move until the entire milling operation is
complete.
The fine downfeed graduated dial measures spindle movement in 0.001" increments, with one full
revolution equaling 0.080" of spindle travel.

Quill Lock
Lever

Engaging Fine Downfeed Controls
Downfeed
Selector
Knob
Graduated Dials

In the following example, the fine downfeed
controls are used to mill 0.010" off a workpiece:
1.

Use vertical travel handwheel (see Figure
103 on next page) to adjust cutting tool just
above workpiece surface, then secure the
headstock with Z-axis lock levers.

Tighten downfeed selector knob (see Figure
107) to engage fine downfeed handwheel.

Loosen quill lock lever.

Rotate fine downfeed handwheel clockwise
and lower cutting tool so it just touches
workpiece.

Move workpiece out of the way.

Using graduated dial to gauge spindle movement, rotate fine downfeed handwheel clockwise 0.010".

Tighten quill lock lever.

Turn mill/drill ON and perform cutting pass.

Figure 107. Spindle controls.

Coarse Downfeed
Coarse downfeed is typically used for drilling
applications. Rotate either of the coarse downfeed
handles (see Figure 107) to lower the spindle,
and an internal coil spring helps raise the spindle
back to the top position when you stop applying
downward pressure on the handle.
Note: To maintain control of the upward spindle
travel and the rotating bit in your workpiece,
always continue holding the handle until the
spindle returns to the top position. Letting go of
the coarse downfeed handles when the spindle
is in the lowered position will cause the spindle to
retract too quickly and slam up into the headstock
or lift the workpiece and cause it to spin out of
control.
The coarse downfeed hub features a graduated
dial that measures spindle movement in 0.02"
increments, with one full revolution equaling 2.00"
of spindle travel.

-64-

Model G0768/G0769 (Mfd. Since 8/15)

Installing/Removing
Tooling

Insert tooling into spindle until in contacts
drawbar.

Working from top, thread drawbar by hand
into tooling until it is snug (see Figure 110).

The Model G0769 includes a 1⁄ 2" drill chuck with
MT#2 arbor (see Figure 108).

Figure 110. Threading drawbar into tooling.
Figure 108. ⁄2" chuck joined with MT#2 arbor.
1

Cutting tools are sharp and
can easily cause cutting
injuries. Always protect
your hands with leather
gloves or shop rags when
handling cutting tools.

Tighten drawbar.
Note: Do not overtighten drawbar.
Overtightening makes tool removal difficult
and will damage arbor and threads.

Tighten drawbar lock nut, as shown in Figure
111.

Drawbar
Locknut

Installing Tooling
Tools Needed
Qty
Wrench 8mm...................................................... 1
Wrench 17mm.................................................... 1
Wrench 25mm.................................................... 1
To install tooling:
1.

DISCONNECT MACHINE FROM POWER!

Remove drawbar cap (see Figure 109).

Figure 111. Tightening drawbar lock nut.
7.

Re-install drawbar cap.

Drawbar Cap

Figure 109. Location of drawbar cap.
Model G0768/G0769 (Mfd. Since 8/15)

-65-

Removing Tooling

Tools Needed
Qty
Wrench 8mm...................................................... 1
Wrench 17mm.................................................... 1
Wrench 25mm.................................................... 1
Brass Hammer................................................... 1

Tap top of drawbar with hammer to unseat
taper (see Figure 112).

To remove tooling:
1.

DISCONNECT MACHINE FROM POWER!

Remove drawbar cap.

Loosen drawbar lock nut (see Figure 111) on
previous page.

Unthread drawbar from tooling one full rotation.
Note: Do not fully unthread tooling from
drawbar or the drawbar and tool threads
could be damaged in the next step.

-66-

Figure 112. Tapping drawbar to unseat tool
taper.
6.

Hold onto tooling with one hand and fully
unthread drawbar.

Model G0768/G0769 (Mfd. Since 8/15)

Spindle Speed
Using the correct spindle speed is important for
safe and satisfactory results, as well as maximizing tool life.

Setting Spindle Speed
1.

Rotate spindle speed dial all the way counterclockwise to set spindle speed to lowest
value.

Rotate high/low gearbox knob (see Figure
114) to either “L” (spindle speeds 50–100
RPM) or “H” (spindle speeds 100–2000
RPM).

To set the mill spindle speed for operation, you will
need to: 1) Determine the best spindle speed for
the cutting/drilling task, and 2) configure the high/
low gearbox knob for the desired speed range,
3) use the spindle speed dial and spindle speed
RPM display to get the spindle speed.

Note: When switching between gears, it may
be necessary to rotate spindle by hand so
gears will align and engage.

Determining Spindle Speed
Many variables affect the optimum spindle speed
to use for any given operation, but the two most
important are the recommended cutting speed
for the workpiece material and the diameter of
the cutting tool, as noted in the formula shown in
Figure 113.

*Recommended

Cutting Speed (FPM) x 12

Tool Dia. (in inches) x 3.14

Gearbox
Knob

Spindle
= Speed
(RPM)

Gearbox Knob

*Double if using carbide cutting tool
Figure 113. Spindle speed formula for mill/drills.
Cutting speed, typically defined in feet per minute
(FPM), is the speed at which the edge of a tool
moves across the material surface.
A recommended cutting speed is an ideal speed
for cutting a type of material in order to produce
the desired finish and optimize tool life.
The books Machinery’s Handbook or Machine
Shop Practice, and some internet sites, provide excellent recommendations for which cutting
speeds to use when calculating the spindle speed.
These sources also provide a wealth of additional
information about the variables that affect cutting
speed and they are a good educational resource.

L
(Low)

CENTER
(Neutral)

H
(High)

Figure 114. High/low gearbox knob set to low
"L".
3.

Press ON button and turn spindle direction
switch to "F".

While watching RPM display, rotate spindle
speed dial clockwise until desired RPM is
reached.

Also, there are a large number of easy-to-use
spindle speed calculators that can be found on
the internet. These sources will help you take into
account the applicable variables in order to determine the best spindle speed for the operation.
Model G0768/G0769 (Mfd. Since 8/15)

-67-

ACCESSORIES

SECTION 6: ACCESSORIES
Installing unapproved accessories may
cause machine to malfunction, resulting in
serious personal injury or machine damage.
To reduce this risk, only install accessories
recommended for this machine by Grizzly.

T26599—Optional Stand for G0768/G0769
Size: 291⁄2" W x 32" H x 16" D
•
•
Drawers: 12" W x 8" H x 12" D

NOTICE

Refer to our website or latest catalog for
additional recommended accessories.
T25206—11 Pc. Carbide Bit Set 5⁄16"
This 11-Pc. Carbide-Tipped Tool Bit Set includes
a wide variety of tool types for just about any
machining operation. This set also includes two
boring bars. Boring bars measure 47⁄8" long.
Shank size for all is 5⁄16".

Figure 117. T26599 Stand for G0768/G0769.
SB1365—South Bend Way Oil-ISO 68
T23964—Moly-D Multi-purpose NLGI#2
Grease

Figure 115. T25206 11-Pc. carbide-tipped tool
set.
H2987—½" Bent Lathe Dog
H2988—1" Bent Lathe Dog
H2989—1½" Bent Lathe Dog
H2990—2" Bent Lathe Dog
H2991—3" Bent Lathe Dog

Figure 118. Recommended products for
machine lubrication.

Figure 116. Model H2987 1⁄2" Bent Lathe Dog.

order online at www.grizzly.com or call 1-800-523-4777
-68-

Model G0768/G0769 (Mfd. Since 8/15)

G9361—Heavy-Duty Triple Bearing Live Center
MT#2
This Triple Bearing Live Center is hardened to
61-65 Rockwell and has a unique head driving
mechanism that prevents dust, chips, and coolant
from entering the internal workings. Made with
precision, high-quality bearings, this live center
has an accuracy of 0.0003".

H7991—Mini Mag Base Indicator Set
Set features a 7 Jewel indicator with 0.0005" resolution. The mini magnetic base measures 13 ⁄ 16" x
13 ⁄ 16" x 13 ⁄ 8" and includes a single lock knob for
easy setups. Includes 2 dovetail tool posts and a
protective plastic case.

Figure 119. G9361 MT#2 Live Center.
G9788—4-Pc. Measuring Tool Set
This is the set you need for accurate measurements. Includes a stainless steel 6" dial caliper, a
6" scale with inch scale on one side and a metric
scale on the other, a 1" carbide-tipped micrometer with vernier scale, and a 4" precision square
with beveled edge. Comes with molded case and
micrometer adjustment wrench.

Figure 121. H7991 Mini Mag Base Indicator Set.
H5930—4-Pc. Center Drill Set 60°
H5931—4-Pc. Center Drill Set 82°
Double-ended HSS Center Drills are precision
ground. Each set includes sizes 1–4.
SIZE

BODY
DIA.

DRILL
DIA.

OVERALL
LENGTH

⁄64"

11⁄4"

⁄64"

17⁄8"

⁄64"

⁄8"

21⁄8"

⁄8"

⁄16"

⁄4"

⁄16"

Figure 120. G9788 4-Pc. Measuring Tool Set.

Figure 122. HSS ground center-drill sets.

order online at www.grizzly.com or call 1-800-523-4777
Model G0768/G0769 (Mfd. Since 8/15)

-69-

T10253—2" Mini Self-Centering Vise with
Swivel Base
Ideal for holding small parts and model making.
Has self-centering jaws and adjustable gib on a
dovetailed way. 21⁄16" jaw opening, 2" jaw width,
25⁄8" crank handle, and base swivels 360°. Overall
size is 63⁄4" L x 4" W x 33⁄8" H with handle removed.

H6195—3" Rotary Table w/ Clamps
For horizontal or vertical use. 3" diameter table
rotates 360°. Low profile—only 1.670" tall. 45 ⁄ 16"
T-slots. 1:36 ratio or 10° per handwheel revolution.
Scale reads to 15 minutes. Has brass lock knob.
Table height in horizontal position: 15 ⁄ 8";
in vertical position: 31⁄4".

Figure 123. T10253 2" Mini Self-Centering Vise.

Figure 125. H6195 3" Rotary Table w/Clamps.

4-Flute C-2 Grade Carbide End Mills
These American-made 4-flute Carbide End Mills
feature standard cutting lengths and nominal
minus diameter tolerances. Recommended for
profiling and finishing non-ferrous materials.

MT#2 End Mill Holders
Hold your end mills in the Model G0769 spindle
with these quality end mill holders. Sized for various end mill shanks.

Model

Cutting
Dia.

Flute Lgth

H3649

⁄ 16"

H3650

⁄ 32"

H3651

OA Lgth

⁄ 16"

11⁄ 2"

⁄ 8"

11⁄ 2"

⁄ 8"

⁄ 2"

11⁄ 2"

H3652

⁄ 32"

⁄ 16"

H3653

⁄ 16"

⁄ 8"

H3654

⁄ 32"

⁄ 8"

21⁄ 2"

⁄4"

21⁄ 2"

⁄4"

21⁄ 2"

⁄ 16"

21⁄ 2"

⁄ 8"

21⁄ 2"

⁄ 16"

2 ⁄4"

⁄ 2"

H3655

H3656

⁄ 32"

H3657

⁄ 16"

H3658

⁄ 8"

H3659

H3660

Model

Drawbar

Size

T25703

⁄ 8"-16 TPI

T25704

⁄ 8"-16 TPI

⁄ 8"

T25705

⁄ 8"-16 TPI

⁄ 2"

T25706

⁄ 8"-16 TPI

⁄ 8"

⁄ 16"

Figure 126. MT#2 end mill holders.

Figure 124. 4-flute C-2 grade carbide end mills.

order online at www.grizzly.com or call 1-800-523-4777
-70-

Model G0768/G0769 (Mfd. Since 8/15)

SECTION 7: MAINTENANCE
Daily, After Operations
Always disconnect power
to the machine before
performing maintenance.
Failure to do this may
result in serious personal injury.

Schedule
Ongoing
To maintain a low risk of injury and proper
machine operation, if you ever observe any of the
items below, shut down the machine immediately
and fix the problem before continuing operations:
•
•
•
•
•

Loose mounting bolts or fasteners.
Worn, frayed, cracked, or damaged wires.
Guards or covers removed.
Emergency Stop button not working correctly
or not requiring you to reset it before starting
the machine again.
Damaged or malfunctioning components.

Daily, Before Operations
•
•
•
•
•
•
•

Add oil to the ball oilers (Page 72).
Lubricate the leadscrew and carriage rack
(Page 73).
Lubricate the bedways (Page 73).
Clean/lubricate the cross slide and compound slide (Page 73).
Disengage the half nut on the carriage (to
prevent crashes upon startup).
Lubricate column ways—G0769 Only (Page
75).
Lubricate quill outside surface—G0769 Only
(Page 75).

Model G0768/G0769 (Mfd. Since 8/15)

•
•
•

Press the Emergency Stop button (to prevent
accidental startup).
Vacuum/clean all chips and swarf from bed,
slides.
Wipe down all unpainted or machined surfaces with an oiled rag.

Every 90 Hours of Operation
•
•

Lubricate quill rack—G0769 Only (Page 75).
Lubricate headstock gears—G0769
(Page 76).

Every 120 Hours of Operation
•

Lubricate Z-axis leadscrew—G0769 Only
(Page 76).

Annually
•

Lubricate end gears (Page 74).

Cleaning/Protecting
Because of its importance, we recommend that
the cleaning routine be planned into the workflow
schedule.
Typically, the easiest way to clean swarf from the
machine is to use a brush and wet/dry shop vacuum that are dedicated for this purpose. The small
chips left over after vacuuming can be wiped up
with a slightly oiled rag. Avoid using compressed
air to blow off chips, as this may drive them deeper into the moving surfaces or cause sharp chips
to fly into your face or hands.
All unpainted and machined surfaces should be
wiped down daily to keep them rust free and in top
condition. This includes any surface that is vulnerable to rust if left unprotected. Use a quality ISO
68 way oil (see Page 68 for offerings from Grizzly)
to prevent corrosion.

-71-

Lubrication
The lathe has metal-to-metal sliding surfaces that
require regular lubrication to maintain smooth
movement and ensure long-lasting operation.
Other than the lubrication points covered in this
section, all other bearings are internally lubricated
and sealed at the factory. Simply leave them
alone unless they need to be replaced.
Before performing any lubrication task,
DISCONNECT MACHINE FROM POWER!
We recommend using Model SB1365 Way Oil
or equivalent (see Page 68) for most lubrication
tasks.

Lubrication Frequency
Lubrication Task
Ball Oilers

Frequency Page
This
Daily
Page

Leadscrew & Carriage
Rack

Daily

Bedways

Daily

Annually

Daily

Annually

Mill Column Ways

Daily

Mill Quill Outside Surface

Daily

Mill Quill Rack

90 Hrs.

Mill Z-Axis Leadscrew

120 Hrs.

Mill Headstock Gears

90 Hrs.

Feed Gearbox
Cross Slide & Compound
Slide
End Gears

Items Needed
Qty
Clean Rag ......................................... As Needed
Mineral Spirits..................................... As Needed
Stiff Brush........................................................... 1
Pump-Type Oil Can w/Plastic Cone Tip............. 1

Ball Oilers
Lube Type................................ ISO 32 Equivalent
Lube Amount............................. 1 or 2 Squirts/Fill
Lubrication Frequency.................................. Daily
This lathe has four ball oilers that should be oiled
on a daily basis before beginning operation.
Proper lubrication of ball oilers is done with a
pump-type oil can that has a plastic or rubberized cone tip. We do not recommend using metal
needle or lance tips, as they can push the ball too
far into the oiler, break the spring seat, and lodge
the ball in the oil galley.
Lubricate the ball oilers before and after machine
use, and more frequently under heavy use. When
lubricating ball oilers, first clean the outside surface to remove any dust or grime. Push the tip of
the oil can nozzle against the ball oiler to create
a hydraulic seal, then pump the oil can once or
twice. If you see sludge and contaminants coming
out of the lubrication area, keep pumping the oil
can until the oil runs clear. When finished, wipe
away any excess oil.
Refer to Figure 127 to identify the location of each
ball oiler.
Ball Oilers

NOTICE

The recommended lubrication is based on
light-to-medium usage. Since lubrication
helps to protect value and operation of
machine, these lubrication tasks may need
to be performed more frequently than recommended, depending on usage.

Ball Oilers
Figure 127. Ball oilers.

Failure to follow reasonable lubrication
practices as instructed in this manual could
lead to premature failure of machine components and will void the warranty.
-72-

Model G0768/G0769 (Mfd. Since 8/15)

Leadscrew & Carriage Rack

Feed Gearbox

Lube Type... Model SB1365 or ISO 68 Equivalent
Lube Amount...................................... As Needed
Lubrication Frequency.................................. Daily

Lube Type...Model T23964 or NLGI#2 Equivalent
Frequency........................ Annually or As Needed

Before lubricating the leadscrew and carriage
rack (see Figure 128), clean them first with mineral spirits. Use a stiff brush to help remove any
debris or grime. Apply a thin coat of oil along the
entire length of the carriage rack. Use a stiff brush
to make sure oil is applied into the leadscrew
threads.
Note: In some environments, abrasive material
can become caught in the leadscrew lubricant and
drawn into the half nut. In this case, lubricate the
leadscrew with a quality dry lubricant.

Rack

The gearbox can be quickly lubricated (as
necessary or if noisy) by removing the set screw
shown in Figure 107 and adding a shot or two of
grease from a grease gun. The grease inside the
gearbox will eventually need to be replaced. To do
this, remove the gearbox cover, use mineral spirits
and a stiff brush to clean gears, allow them to dry,
reapply new grease, and re-install cover.

Feed Gearbox

Set
Screw

Bedways
Figure 129. Feed gearbox quick lubrication
location.

Cross Slide & Compound Slide
Leadscrew
Figure 128. Leadscrew, rack and bedways.

Bedways
Lube Type... Model SB1365 or ISO 68 Equivalent
Lube Amount...................................... As Needed
Lubrication Frequency.................................. Daily
Before lubricating the bedways (see Figure 128),
clean them with mineral spirits. Apply a thin coat
of oil along the length of the bedways. Move the
steady rest, carriage, and tailstock to access the
entire length of the bedways.

Lube Type... Model SB1365 or ISO 68 Equivalent
Lube Amount.........................................Thin Coat
Lubrication Frequency.................................. Daily
Use the handwheels to separately move the
cross slide and compound rest as far forward as
possible (see Figure 130). Clean the slides with
mineral spirits and wipe down with a rag. Apply
lubricant and move the slides back and forth to
distribute the oil.

Compound
Bottom Slide

Cross Slide
Bottom Slide
Figure 130. Location of bottom slides.
Model G0768/G0769 (Mfd. Since 8/15)

-73-

End Gears
Lube Type...Model T23964 or NLGI#2 Equivalent
Frequency................ Annually or When Changing
The end gears, shown in Figure 131, should
always have a thin coat of heavy grease to
minimize corrosion, noise, and wear. Wipe away
excess grease that could be thrown onto the
V-belts and reduce optimal power transmission
from the motor.

Lubricating
1. DISCONNECT MACHINE FROM POWER!
2.

Remove end gear cover and all end gears
shown in Figure 131.

Clean end gears thoroughly with mineral spirits to remove old grease. Use a small brush if
necessary to clean between teeth.

Clean shafts, and wipe away any grease
splatters in vicinity and on inside of end
cover.

Using a clean brush, apply a thin layer of
white lithium grease on the gears. Make sure
to get grease between gear teeth, but do not
fill teeth valleys.

Apply a small dab of grease to each gear
shaft.

Install end gears and mesh them together
with an approximate 0.002"–0.004" backlash.
Once gears are meshed together, apply a
small dab of grease between them where
they mesh together—this grease will be distributed when gears rotate and re-coat any
areas scraped off during installation.

Re-install end cover before re-connecting
machine to power.

Figure 131. End gears.
Handling & Care
Make sure to clean and lubricate any gears you
install or change. Be very careful during handling
and storage—the grease coating on the gears will
easily pickup dirt or debris, which can then spread
to the other gears and increase the rate of wear.
Make sure the end cover remains installed whenever possible to keep the gears free of dust or
debris from the outside environment.

-74-

Model G0768/G0769 (Mfd. Since 8/15)

Column Ways (G0769)

Quill Rack

Lube Type... Model SB1365 or ISO 68 Equivalent
Lube Amount.........................................Thin Coat
Lubrication Frequency.................................. Daily

Lube Type...Model T23964 or NLGI#2 Equivalent
Lube Amount.........................................Thin Coat
Lubrication Frequency.......... 90 hrs. of Operation

Regular lubrication will ensure your milling headstock performs at its highest potential. Regularly
wipe table and column ways with recommended
lubrication, then move components back and
forth several times to ensure smooth movements
(see Figure 132).

Move quill all the way down to gain full access to
quill rack (see Figure 134), lock the quill in place,
then clean teeth with mineral spirits, shop rags,
and a brush.

Z-Axis Ways
(1 of 2)
Rack

Figure 134. Quill rack location.
Figure 132. Z-axis way lubrication location.

Quill Outside Surface
Lube Type... Model SB1365 or ISO 68 Equivalent
Lube Amount.........................................Thin Coat
Lubrication Frequency.................................. Daily

When dry, use a brush to apply a thin coat of
grease to teeth, then raise/lower the quill several
times to evenly distribute grease.
Note: Re-apply oil that may have been removed
during the cleaning process to the quill surface
around the rack.

Without disturbing grease on quill rack, clean outside smooth surface of quill (see Figure 133) with
mineral spirits and shop rags.

Quill Outside
Surface
Figure 133. Outside surface of quill.
When dry, apply thin coat of lubricant to smooth
surface, then move spindle up and down to evenly
distribute oil.
Model G0768/G0769 (Mfd. Since 8/15)

-75-

Z-Axis Leadscrew (G0769)

Headstock Gears (G0769)

Lube Type...Model T23964 or NLGI#2 Equivalent
Lube Amount.........................................Thin Coat
Lubrication Frequency........ 120 hrs. of Operation

Lube Type...Model T23964 or NLGI#2 Equivalent
Lube Amount.........................................Thin Coat
Lubrication Frequency.......... 90 hrs. of Operation

Lower headstock approximately 3 ⁄4 of the way
down the Z-axis ways, as shown in Figure 135.

To lubricate headstock gears:
1.

Z-Axis
Leadscrew

Remove cap screw and headstock gear
access cover, as shown in Figure 136.

Cap Screw

Headstock
Gear
Access
Cover

Headstock
Gears
Figure 135. Z-axis leadscrew location.
Use mineral spirits and a brush to clean as much
existing grease and debris off of Z-axis leadscrew
shown in Figure 135 as possible. When dry, apply
NLGI#2 grease to exposed leadscrew threads.
Move headstock through its full range of motion
several times to disperse grease along full length
of leadscrew.

-76-

Figure 136. Headstock access cover and cap
screw location.
2.

Using small brush, apply thin coat of grease
to headstock gears.

Operate mill/drill in both high and low gear
settings to work grease through gears.

Re-install access cover and cap screw
removed in Step 1.

Model G0768/G0769 (Mfd. Since 8/15)

Machine Storage
To prevent the development of rust and corrosion,
the lathe must be properly prepared if it will be
stored for a long period of time. Doing this will
ensure the lathe remains in good condition for
later use.

Bringing Machine Out of Storage
1.

Remove moisture-absorbing desiccant packs
from electrical box.

Repeat Test Run and Spindle Break-In procedures, beginning on Page 27.

Preparing Machine for Storage
1.

DISCONNECT MACHINE FROM POWER!

Thoroughly clean all unpainted, bare metal
surfaces, then apply a liberal coat of way
oil, heavy grease, or rust preventative. Take
care to ensure these surfaces are completely
covered and that rust preventative or grease
is kept off of painted surfaces.

Lubricate machine as outlined in lubrication
section. Be sure to use an oil can to purge all
ball oilers and oil passages with fresh oil.

Place a few moisture absorbing desiccant
packs inside electrical box.

Cover machine and place it in a dry area that
is out of direct sunlight and away from hazardous fumes, paint, solvents, or gas. Fumes
and sunlight can bleach or discolor paint.

Every few months, rotate by hand all geardriven components a few times in several
gear selections. This will keep bearings,
bushings, gears, and shafts well lubricated
and protected from corrosion—especially
during winter months.
Slide carriage, tailstock, and steady rest down
lathe bed to make sure that way spotting is
not beginning to occur. Move mill headstock
up and down column (Model G0769 only).

Model G0768/G0769 (Mfd. Since 8/15)

-77-

SECTION 8: SERVICE
Review the troubleshooting and procedures in this section if a problem develops with your machine. If you
need replacement parts or additional help with a procedure, call our Technical Support. Note: Please gather
the serial number and manufacture date of your machine before calling.

Troubleshooting
Motor & Electrical
Symptom

Possible Cause

Possible Solution

Machine does not
start or a circuit
breaker trips.

1. Emergency stop button engaged or at fault.

1. Press side tab in and lift switch cover. Press On
button to reset; replace if not working properly.
2. Ensure correct power supply voltage.
3. Replace fuse/ensure no shorts (Page 85).
4. Ensure circuit is sized correctly and free of shorts.
Reset circuit breaker or replace fuse.
5. Check/fix broken, disconnected, or corroded wires.
6. Replace switch.
7. Turn spindle speed dial past "0". Ensure dial has
correct voltage. Replace if faulty.
8. Turn spindle direction switch to "F" or "R". Ensure
dial has correct voltage. Replace if faulty.
9. Turn lathe/mill selector switch to "lathe" or "mill"
mode. Replace if faulty.
10. Remove/replace brushes (Page 86).
11. Test/repair/replace.
12. Test/replace switch.

Machine stalls or is
underpowered.

2. Incorrect power supply voltage.
3. Blown fuse.
4. Power supply circuit breaker tripped or fuse
blown.
5. Wiring open/has high resistance.
6. On/Off switch at fault.
7. Spindle speed dial in OFF position or at
fault.
8. Spindle direction switch turned to "0" or at
fault.
9. Lathe/mill selector switch in neutral, or at
fault.
10. Motor brushes at fault.
11. Motor at fault.
12. Spindle rotation switch at fault.
1. Machine undersized for task.
2. Feed rate/cutting speed too fast.
3. Wrong workpiece material.
4. Timing belt slipping.
5. Motor overheated.
6. Computer board at fault.
7. Motor speed dial at fault.
8. Motor brushes at fault.
9. Pulley/sprocket slipping on shaft.
10. Motor bearings at fault.
11. Motor at fault.

Machine has
vibration or noisy
operation.

1. Motor or component loose.
2. Bit chattering.

3. V-belt(s) worn or loose.
4. Motor fan rubbing on fan cover.
5. Motor mount loose/broken.

-78-

1. Use sharp bits/chisels at correct angle; reduce feed
rate/depth of cut; use coolant if possible.
2. Decrease feed rate/cutting speed.
3. Use correct type/size of metal.
4. Tension/replace belt; ensure pulleys are aligned.
5. Use sharp bits; reduce feed rate/depth of cut.
6. Clean motor, let cool, and reduce workload.
7. Test and replace if at fault.
8. Remove/replace brushes (Page 86).
9. Replace loose pulley/shaft.
10. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
11. Test/repair/replace.
1. Inspect/replace damaged bolts/nuts, and retighten
with thread locking fluid.
2. Replace/sharpen bit; index bit to workpiece; use
correct feed rate and cutting RPM; retract tool
holder and position workpiece closer.
3. Inspect/replace belts with a new matched set.
4. Fix/replace fan cover; replace loose/damaged fan.
5. Tighten/replace.

Model G0768/G0769 (Mfd. Since 8/15)

Lathe Operation
Symptom

Possible Cause

Possible Solution

Bad surface finish.

1. Wrong spindle speed or feed rate.
2. Dull tooling or poor tool selection.

1. Adjust for appropriate spindle speed and feed rate.
2. Sharpen tooling or select a better tool for the
intended operation.
3. Adjust tool height to spindle centerline (see Page
45).
4. Tighten gibs (see Page 83).

3. Tool height not at spindle centerline.
4. Too much play in gibs.
Tapered tool difficult 1. Quill not fully retracted into tailstock.
to remove from
2. Contaminants not removed from taper
tailstock quill.
before inserting into quill.

1. Turn quill handwheel until tapered tool is forced out
of quill.
2. Clean taper and bore, then re-install tool.

4. Leadscrew mechanism worn or out of
adjustment.

1. Clean ways and relubricate.
2. Adjust gibs (see Page 83).
3. Tighten handwheel fasteners, adjust handwheel
backlash to a minimum (see Page 82).
4. Adjust leadscrew to remove end play (see Page
82).

Cross slide,
compound,
or carriage
handwheels hard to
move.

1.
2.
3.
4.
5.

Cutting tool
or machine
components vibrate
excessively during
cutting.

1. Tool holder not tight enough.
2. Cutting tool sticks too far out of tool holder;
lack of support.
3. Gibs are out of adjustment.
4. Dull cutting tool.
5. Incorrect spindle speed or feed rate.

1. Check for debris, clean, and retighten.
2. Re-install cutting tool so no more than 1⁄3 of the total
length is sticking out of tool holder.
3. Adjust gibs at affected component (see Page 83).
4. Replace or resharpen cutting tool.
5. Use the recommended spindle speed and feed rate.

Workpiece is
tapered.

1. Headstock and tailstock not properly
aligned.

1. Re-align tailstock to headstock spindle centerline
(see Page 39).

Chuck jaws will
not move or do not
move easily.

1. Chips lodged in jaws or scroll plate.

1. Remove jaws, clean and lubricate scroll plate, then
replace jaws.

Cross slide,
compound rest, or
carriage feed has
sloppy operation.

1. Ways loaded with shavings, dust, or grime.
2. Gibs are out of adjustment.
3. Handwheel loose or excessive backlash.

Ways loaded with chips, dust, or grime.
Gibs are too tight.
Backlash setting too tight.
Bedways are dry.
Half nut lever engaged.

Model G0768/G0769 (Mfd. Since 8/15)

Clean ways and lubricate.
Loosen gibs slightly (see Page 83).
Slightly loosen backlash setting (see Page 82).
Lubricate bedways.
Disengage half nut lever for manual feeding.

-79-

Mill Operation
Symptom

Possible Cause

Possible Solution

Tool slips in spindle. 1. Tool is not fully drawn up into spindle taper.
2. Debris on tool or in spindle taper.
3. Taking too big of cut.

1. Tighten drawbar (Do not overtighten).
2. Clean collet and spindle taper.
3. Lessen depth of cut and allow chips to clear.

Breaking tools or
cutters.

1. Set spindle speed correctly (Page 67) or use slower
feed rate.
2. Use larger cutting tool and slower feed rate.
3. Use coolant fluid or oil for appropriate application if
possible.
4. Lessen depth of cut and allow chips to clear.
5. Fully retract spindle and lower headstock. This
increases rigidity.

1. Spindle speed/feed rate is too fast.
2. Cutting tool too small.
3. Cutting tool getting too hot.
4. Taking too big of a cut.
5. Spindle extended too far down.

Workpiece vibrates
or chatters during
operation.

1. Workpiece not secure.
2. Spindle speed/feed rate is too fast.
3. Spindle extended too far down.

Cross slide table is
hard to move.

1. Chips have loaded up on ways.
2. Ways are dry and need lubrication.
3. Gibs are too tight.

Bad surface finish.

1. Spindle speed/feed rate is too fast.
2. Using dull or incorrect cutting tool.
3. Wrong rotation of cutting tool.
4. Workpiece not secure.
5. Spindle extended too far down.

-80-

1. Properly clamp workpiece on table or in vise.
2. Set spindle speed correctly (Page 67) or use slower
feed rate.
3. Fully retract spindle and lower headstock. This
increases rigidity.
1. Frequently clean away chips that load up during
milling operations.
2. Lubricate ways (Page 73).
3. Adjust gibs (see Page 83).
1. Set spindle speed correctly (Page 67) or use a
slower feed rate.
2. Sharpen cutting tool or select one that better suits
operation.
3. Check for proper cutting rotation for cutting tool.
4. Properly clamp workpiece on table or in vise.
5. Fully retract spindle and lower headstock. This
increases rigidity.

Model G0768/G0769 (Mfd. Since 8/15)

Tensioning &
Replacing V-Belts
V-belts stretch and wear with use, so it is important to routinely monitor belt tension. V-belts that
are improperly tensioned or exposed to grease/oil
will slip and poorly transmit power from the motor.
To ensure optimal power transmission, inspect
belts on a monthly basis to verify they are properly
tensioned and free of oil/grease. Replace V-belts
when they become cracked, frayed, or glazed.

Turn tensioner screw (see Figure 139) clockwise to tension V-belts or counterclockwise to
loosen V-belts.
—If replacing V-belts, loosen idler pulley and
carefully roll upper and lower V-belts off of
pulleys, then re-install new V-belts in same
manner.

Tensioner
Screw
Upper
V-Belt

Tools Needed
Qty
Hex Wrench 3, 4mm.....................................1 Ea.
Open-End Wrench 10, 13 mm......................1 Ea.

Idler
Pulley

To adjust tension or replace V-belts:
1.

DISCONNECT MACHINE FROM POWER!

Remove end cover and electrical panel (see
Figure 137).

Lower
V-Belt
Figure 139. Tensioner screw and V-belts.
5.

Tension V-belts until there is approximately
⁄8" deflection when pushed with moderate
pressure, as shown in Figure 140.

End Cover
Electrical
Panel

Pulley

Cap Screws to
Remove (1 of 5)

Deflection
⁄8"

Figure 137. Location of parts for removing panel.
3.

Using flat 10mm wrench provided with lathe,
hold pivot block bolt shown in Figure 138,
and loosen hex nut with 13mm wrench.
Pivot Block
Hex Nut

Pulley
Figure 140. Correct V-belt deflection.

Pivot Block
Bolt

Idler
Pulley
Figure 138. Pivot block bolt and hex nut for
idler pulley adjustment.
Model G0768/G0769 (Mfd. Since 8/15)

—If there is more than 1⁄8" deflection when
the V-belts are pushed with moderate pressure, adjust tension until it is correct.
6.

Tighten pivot block bolt and hex nut loosened
in Step 3.

Re-install and secure end cover and electrical panel.

-81-

Adjusting Backlash
Backlash is the amount of free play felt while
changing rotation directions with the handwheel.
This can be adjusted on the cross slide leadscrew.
Before beginning any adjustment, make sure all
associated components are cleaned and lubricated and locks are loose.
When adjusting backlash, tighten the components
enough to remove backlash, but not so much that
the components bind the leadscrew, making it
hard to turn. Overtightening will cause excessive
wear to the nut and leadscrew.

Reducing backlash to less than 0.002" is
impractical and can lead to accelerated
wear in leadscrew and other components.
Avoid temptation to overtighten leadscrew
nut or set screw while adjusting.

Adjusting Leadscrew
End Play
After a long period of time, you may find that the
leadscrew develops excessive end play. This
lathe is designed so that end play can be removed
with a simple adjustment.
Tools Needed
Qty
Hex Wrench 4mm............................................... 1
Open-End Wrench 14mm................................... 1
To remove leadscrew end play:
1.

DISCONNECT MACHINE FROM POWER!

Loosen set screw shown in Figure 142 several turns.
Leadscrew

Retaining Nut

Cross Slide
Tools Needed:
Qty
Hex Wrench 3mm ............................................. 1
The cross slide backlash is adjusted by tightening and loosening the set screw shown in Figure
139. The set screw adjusts the height of the
leadscrew nut, taking up lash between the nut and
leadscrew.

Set Screw

End Bracket
Figure 142. Leadscrew end play adjustments.
3.

Tighten retaining nut with your fingers so it
just contacts end bracket, then back nut off
1
⁄8 turn.

Hold nut in position and tighten set screw
against leadscrew until snug.

Set Screw

Figure 141. Cross slide backlash adjustment.
Move the cross slide handwheel back and forth
and adjust backlash until it is approximately
0.002"–0.003", as indicated on the graduated dial.

-82-

Model G0768/G0769 (Mfd. Since 8/15)

Adjusting Gibs
The goal of adjusting the gib screws is to remove
sloppiness or "play" from the ways without overadjusting them to the point where they become
stiff and difficult to move.

Adjusting Cross Slide and Compound
Slide Gibs
1.

DISCONNECT MACHINE FROM POWER!

Loosen hex nuts on side of cross slide or
compound slide (see Figures 143–144).

Cross Slide
Adjustment
Fasteners

In general, loose gibs cause poor finishes and
tool chatter; however, over-tightened gibs cause
premature wear and make it difficult to turn the
handwheels.
The cross-slide and compound slide both use a
straight gib, which is adjusted with cap screws
and hex nuts along its length. The screws push
the gib in to create more contact with the sliding surfaces. The Z-axis ways (G0769 only) use
a tapered gib, which is adjusted with screws on
each end.
The gib adjustment process usually requires some
trial-and-error. Repeat the process as necessary
until you find the best balance between loose and
stiff movement. Most machinists find that the ideal
gib adjustment is one where a small amount of
drag or resistance is present, yet the handwheels
are still somewhat easy to move.

Figure 143. Cross slide gib adjustment hex nuts
and cap screws.

Compound Slide
Adjustment
Fasteners

Clean and lubricate the ways before beginning
any adjustments. Refer to Lubrication on Page
72 for instructions and lubricant specifications.
Tools Needed
Qty
Open-End Wrench 7mm..................................... 1
Hex Wrench 3mm............................................... 1
Flat Head Screwdriver #2................................... 1

Figure 144. Compound slide gib adjustment hex
nuts and cap screws.
3.

Adjust all corresponding cap screws in small
and equal increments, then test movement of
slide by rotating handwheel.
Note: Turning cap screws clockwise tightens
the gib, and turning them counterclockwise
loosens the gib.

Model G0768/G0769 (Mfd. Since 8/15)

When satisfied with gib adjustment, use hex
wrench to prevent set screws from moving,
then retighten hex nuts to secure settings.

Re-check movement of slide and, if necessary, repeat Steps 2–4.

-83-

Adjusting Half Nut

Adjusting Z-Axis Way Gib
Loosen one gib adjustment screw (see Figure
145) and tighten the opposing screw the same
amount to move the gib, while at the same time
using the handwheel to move the headstock until
you feel a slight drag in the path of movement.

Z-Axis Way Gib
(1 of 2)

The rigidity of the half nut engagement is adjusted
by tightening or loosening the half nut gib screws.
Adjust the half nut if it feels too loose or too tight
when being engaged. Movement that is too stiff
will accelerate wear. Movement that is too sloppy will produce inaccurate turning or threading
results.
Qty
Tools Needed
Open-End Wrench 7mm..................................... 1
Hex Wrench 3mm............................................... 1
To adjust half nut:

Figure 145. Location of top Z-axis way gib.

DISCONNECT MACHINE FROM POWER!

Disengage half nut.

Loosen thread dial cap screw, tilt dial out of
way, then secure to access gib screws and
nuts (see Figure 146).

Gib
Screws &
Nuts
Cap Screw
Figure 146. Half nut gib adjustment set screws.

-84-

Loosen gib nuts and adjust screws in small,
even increments so one end of the gib does
not become tighter than the other.

Engage/disengage half nut several times and
notice how it feels. The adjustment is correct when half nut firmly and easily engages
leadscrew while opening and closing.

Repeat Steps 4–5, if necessary, until satisfied with feel of half nut engagement.

Re-install thread dial so teeth mesh with
leadscrew, then tighten cap screw.
Model G0768/G0769 (Mfd. Since 8/15)

Replacing
Leadscrew Shear Pin
The longitudinal leadscrew is secured to the feed
rate gearing in the headstock with the use of a
soft-metal shear pin (see Figure 147). The shear
pin is designed to break and disengage power
to the leadscrew to help protect more expensive
lathe components if you crash your carriage or
take too large of a cut and overload the lathe.
Replacement shear pin part number: P0768334.

Shear Pin

Replacing Fuse
This machine features on-board fuses designed
to protect sensitive electrical parts from thermal
damage in the event of an overload. If the spindle
does not start, replace the fuses.
The Model G0768 has two fuses, the Model
G0769 has three fuses.
G0768 Replacement Fuses: (1) P0768906,
(1) P0768911.
G0769 Replacement Fuses: (1) P0769906,
(2) P0768911.
To replace fuses:
1.

DISCONNECT MACHINE FROM POWER!

Unthread fuse holders (see Figure 148) by
rotating them counterclockwise, then remove
fuses.

Connecting
Collar

Fuses

Figure 147. Longitudinal leadscrew shear pin.
Tools Needed
Qty
Hammer.............................................................. 1
Punch 3mm........................................................ 1

Fuse
Holders

To replace shear pin:
1.

DISCONNECT MACHINE FROM POWER!

Rotate leadscrew so shear pin faces up and
down. If connecting collar rotates independently from leadscrew, then rotate collar so
shear pin hole aligns with those in leadscrew.

Use punch and hammer to drive out pieces of
old shear pin.

Make sure hole in collar and leadscrew are
aligned, then tap new shear pin completely
through holes in collar and leadscrew.

Model G0768/G0769 (Mfd. Since 8/15)

Fuse
Holder
Holes

Figure 148. Fuse holders and fuses
(Model G0768 shown).
3.

Insert new fuses.

Re-install fuse holders.

-85-

Replacing Brushes
This machine is equipped with one (G0768) or two
(G0769) universal motors that use carbon brushes
to transmit electrical current inside the motor. These
brushes are considered to be regular "wear items" or
"consumables" that will eventually need to be
replaced. The frequency of this replacement is
directly related to how much the motor is used
and how hard it is pushed.

Remove motor mount cap screws (see Figure
149).

Rotate motor to access top motor brush
shown in Figure 150.
Brush Cap

Replace the carbon brushes when the motor no longer reaches full power, or when the brushes measure less than 1⁄4" long (new brushes are 5 ⁄ 8" long).
Tools Needed
Qty
Hex Wrench 3, 4mm......................................1 Ea
Flat Head Screwdriver #2................................... 1
Phillips Head Screwdriver #2............................. 1

Figure 150. Location of top motor brush cap
(Model G0768 shown).
6.

G0768/G0769 Lathe Motor Replacement Brushes:
P0768046
G0769 Mill Motor Replacement Brushes:
P0769786

Unscrew brush cap and carefully remove
brush from motor (see Figure 151).

Replacing Lathe Motor Brushes
1.

DISCONNECT MACHINE FROM POWER!

Remove end cover, electrical panel, and
back splash to access motor brushes.

Brush Cap

Note: Carefully handle the electrical panel.
Try to avoid straining any wires so they do
not disconnect. On Model G0769 remove mill
motor cable harness and cable clamp from
back splash before removing it.
3.

Loosen tensioner screw several turns (see
Figure 149) to remove tension on V-belts.

Motor Mount
Cap Screws

Tensioner
Screw

Figure 149. Motor mounting screws
(Model G0768 shown).
-86-

Brush
Figure 151. Top motor brush components
removed (Model G0768 shown).
7.

Install new brush and re-install brush cap.

Repeat Steps 5–7 to replace bottom motor
brush.

Re-install motor with screws removed earlier.

10. Tension V-belts (refer to Tensioning V-Belts
on Page 81 for details).
11. Re-install back splash, electrical panel, and
end cover.
12. G0769 Only: Re-install cable harness onto
back splash with cable clamp.
Model G0768/G0769 (Mfd. Since 8/15)

Replacing Mill Motor Brushes (G0769)
1.

DISCONNECT MACHINE FROM POWER!

Remove drawbar cap, then remove motor
cover by removing cap screws (see Figure
152).

Cap Screw
(1 of 4)

Unscrew front brush cap and carefully remove
brush from motor (see Figure 153).

Brush

Drawbar
Cap
Brush Cap
Figure 153. Front motor brush components
removed.
Figure 152. Location of mill motor cover screws.

Model G0768/G0769 (Mfd. Since 8/15)

Install new brush and re-install brush cap.

Repeat Steps 3–4 to replace rear motor
brush.

Replace mill motor cover and drawbar cap.

-87-

SECTION 9: WIRING
These pages are current at the time of printing. However, in the spirit of improvement, we may make changes to the electrical systems of future machines. Compare the manufacture date of your machine to the one
stated in this manual, and study this section carefully.
If there are differences between your machine and what is shown in this section, call Technical Support at
(570) 546-9663 for assistance BEFORE making any changes to the wiring on your machine. An updated
wiring diagram may be available. Note: Please gather the serial number and manufacture date of your
machine before calling. This information can be found on the main machine label.

Wiring Safety Instructions
SHOCK HAZARD. Working on wiring that is connected to a power source is extremely dangerous.
Touching electrified parts will result in personal
injury including but not limited to severe burns,
electrocution, or death. Disconnect the power
from the machine before servicing electrical components!
MODIFICATIONS. Modifying the wiring beyond
what is shown in the diagram may lead to unpredictable results, including serious injury or fire.
This includes the installation of unapproved aftermarket parts.
WIRE CONNECTIONS. All connections must
be tight to prevent wires from loosening during
machine operation. Double-check all wires disconnected or connected during any wiring task to
ensure tight connections.
CIRCUIT REQUIREMENTS. You MUST follow
the requirements at the beginning of this manual
when connecting your machine to a power source.

WIRE/COMPONENT DAMAGE. Damaged wires
or components increase the risk of serious personal injury, fire, or machine damage. If you notice
that any wires or components are damaged while
performing a wiring task, replace those wires or
components.
MOTOR WIRING. The motor wiring shown in
these diagrams is current at the time of printing
but may not match your machine. If you find this
to be the case, use the wiring diagram inside the
motor junction box.
CAPACITORS/INVERTERS. Some capacitors
and power inverters store an electrical charge for
up to 10 minutes after being disconnected from
the power source. To reduce the risk of being
shocked, wait at least this long before working on
capacitors.
EXPERIENCING DIFFICULTIES. If you are experiencing difficulties understanding the information
included in this section, contact our Technical
Support at (570) 546-9663.

The photos and diagrams
included in this section are
best viewed in color. You
can view these pages in
color at www.grizzly.com.

-88-

Model G0768/G0769 (Mfd. Since 8/15)

G0768 Wiring Overview
Direction Switch

Fuses
and
Plug

JD-014
REV 091111
Circuit
Board

Emergency Stop
DRO

RPM Sensor
(Inside)

DC Motor
Speed Control
JYMC-220B-II
Potentiometer

JD-013
REV C 120823
Circuit Board

Model G0768/G0769 (Mfd. Since 8/15)

Motor (Inside)
110V 10A
Single-Phase
3
⁄4 HP 5250 RPM

-89-

OUT/N

Rear Panel
(Viewed from Backside)

OUT/L

Fuse
F15al250V

IN/N

5-15 Plug
(As Recommended)

A+

F+

Fuse
F10al250V

OUT/E

OUT/N

JD-013 REV C 120823

DC Motor Speed Control JYMC_220B-II

110 VAC

GND

To Plug

Ground

Hot

Neutral

IN/L

GND

IN/N

IN/L

IN/E

IN/N

IN/L

GND

Motor
110V 10A
Single Phase
3/4 HP
5250RPM

KEDU
Emergency KJD17B
120V
Stop

JD-014 REV A 091111

-9023

Top Panel
(Viewed From Backside)

Inside Electrical
Compartment

ZD-HAWK
RPM Sensor

KEDU ZHA
7
3
11
DIRECTION SWITCH EN61058
12
8
4
Right Side

KEDU ZHA
9
5
1
DIRECTION SWITCH EN61058
10
6
2
Left Side

Direction
Switch

Potentiometer

WX14-12
1k7±5

Front Panel
(Viewed From Backside)

DRO

SN121105

G0768 Wiring

Model G0768/G0769 (Mfd. Since 8/15)

G0768 Wiring Photos

Figure 156. RPM sensor.

Figure 154. Front panel.

Figure 157. Back panel.

Figure 155. Top panel.

Model G0768/G0769 (Mfd. Since 8/15)

-91-

G0769 Wiring Overview
Mill Motor
(Inside)
110V 10A
Single-Phase
3
⁄4 HP 4800 RPM

Lathe/Mill Selector Switch

Emergency Stop
Fuses and
Plug

DRO

Direction
Switch
Speed
Control
Circuit Board

Filter
Circuit Board

-92-

RPM Sensor
(Inside)
Potentiometer

Lathe Motor
(Inside)
110V 10A
Single-Phase
3
⁄4 HP 5250 RPM

Model G0768/G0769 (Mfd. Since 8/15)

Fuse
F10al250V

Rear Panel
(Viewed from Backside)

Fuse
F10al250V

F+
L2

A+

SPEED CONTROL
CIRCUIT BOARD

Fuse
F15al250V

Ground

To Plug

Model G0768/G0769 (Mfd. Since 8/15)
B

5-15 Plug
(As Recommended)

110V 10A
Single Phase
3/4 HP
4800 RPM

14
18
22

15
19
23

13
17
21

7
11

SELECTION
SWITCH

GND

110V 10A
Single Phase
3/4 HP
5250 RPM

Lathe Motor

KEDU
KJD17B
120V
14

Neutral

Emergency Stop

N
1N

Hot

Ui AC-11
440V 360VA
Ith10A
LW8-10/6

Lathe/Mill Drill
Selection Switch

Top Panel

FILTER CIRCUIT BOARD

110 VAC

Mill/Drill
Motor

ZD-HAWK
Mill RPM Sensor

Inside Electrical
Compartment

Lathe RPM
Sensor

KEDU ZHA
7
3
11
DIRECTION SWITCH EN61058
8
4
12
Right Side

KEDU ZHA
9
5
1
DIRECTION SWITCH EN61058
Left Side
10
6
2

Direction
Switch

Potentiometer

WX14-12
1k7±5

Front Panel
(Viewed From Backside)

DRO

SN130722

G0769 Wiring

-93-

G0769 Wiring Photos

Figure 158. Front panel.

Figure 161. RPM sensor.

Figure 159. Top panel components.

Figure 162. Back panel.

Figure 160. Mill/drill motor.

-94-

Model G0768/G0769 (Mfd. Since 8/15)

SECTION 10: PARTS
Headstock
35

34
7

38
41
25
26

31
23
22

15
14

45
4

16
11
17

14 13

8
20

42
25
26

47
46
3

REF PART #

DESCRIPTION

REF PART #

DESCRIPTION

1
2
3
3
4
5
6
7
7
8
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

CAP SCREW M5-.8 X 25
FLAT WASHER 5MM
MOTOR 600W 110VDC (G0768)
MOTOR 600W 110VDC (G0769)
MOTOR PULLEY
KEY 4 X 4 X 20
SET SCREW M6-1 X 8
V-BELT 5M375 GATES POLYFLEX (G0768)
V-BELT 5M387 GATES POLYFLEX (G0769)
MOTOR MOUNT (G0768)
MOTOR MOUNT (G0769)
FLAT WASHER 8MM
CAP SCREW M8-1.25 X 20
MOUNT BLOCK
CAP SCREW M6-1 X 30
TENSION ADJUSTMENT BLOCK
CAP SCREW M6-1 X 20
PIVOT BLOCK BOLT M8-1.25 X 35
IDLER PIVOT BLOCK
FLAT WASHER 8MM
HEX NUT M8-1.25
INT RETAINING RING 8MM
IDLER SHAFT
BALL BEARING 608ZZ
IDLER PULLEY
INT RETAINING RING 22MM

25
26
27
30
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
50
50

CAP SCREW M8-1.25 X 25
FLAT WASHER 8MM
HEX NUT M8-1.25
END GEAR COVER (G0768)
END GEAR COVER (G0769)
HEX NUT M10-1.5
STUD-DE M10-1.5 X 90, 35
KNURLED KNOB M10-1.5
SPANNER NUT M27 X 1
SPINDLE PULLEY
GEAR 40T
SPACER
CASTING SEAL
TAPERED ROLLER BEARING 30206
GREASE SEAL
CAP SCREW M4-.7 X 10
BLOCK, ROUND ENDS
HEADSTOCK CASTING
KEY 3 X 3 X 15
SPINDLE W/INTRINSIC BACK PLATE
MOTOR CARBON BRUSH 2-PC SET
MOTOR CARBON BRUSH CAP
POWER CORD 16G 3W 72" 5-15
ELECTRICAL SHROUD (G0768)
ELECTRICAL SHROUD (G0769)

P0768001
P0768002
P0768003
P0769003
P0768004
P0768005
P0768006
P0768007
P0769007
P0768008
P0769008
P0768009
P0768010
P0768011
P0768012
P0768013
P0768014
P0768015
P0768016
P0768017
P0768018
P0768019
P0768020
P0768021
P0768022
P0768023

Model G0768/G0769 (Mfd. Since 8/15)

P0768025
P0768026
P0768027
P0768030
P0769030
P0768031
P0768032
P0768033
P0768034
P0768035
P0768036
P0768037
P0768038
P0768039
P0768040
P0768041
P0768042
P0768043
P0768044
P0768045
P0768046
P0768047
P0768048
P0768050
P0769050

-95-

Carriage Components & Accessories
128
131

129

154

130

102

105

109

101

103

112

132
133

134

151
152

106
108 107

155

104

109
110

131
134
135
136

111
113

139

114
138
141

138

142

150

115

149

117

116
123

123
146

156
157

119

127

145
127

118

126

147

120

144

126

161

180

162
163
164

160

158

180

165

177

124

170

169

171

159
166

176
179-1
178

167
179

172
168

173

G0769 Only

-96-

Model G0768/G0769 (Mfd. Since 8/15)

Carriage Components & Accessories
REF PART #

DESCRIPTION

REF PART #

DESCRIPTION

101
102
103
104
105
106
107
108
109
110
111
112
113
114
114
115
116
117
118
119
120
123
124
126
127
128
129
130
131
132
133
134
135
136
138
139
141

TOOL POST HANDLE M5-.8 X 5
TOOL POST HUB
TOOL POST FLAT WASHER 5MM, PLASTIC
STUD-DE M8-1.25 X 68, 18
TOOL HOLDER BOLT M6-1 X 25
INDENT PIN
COMPRESSION SPRING
COMPOUND REST
HEX NUT M4-.7
CAP SCREW M4-.7 X 14
COMPOUND REST GIB
TOOL POST BODY
HEX BOLT M5-.8 X 30
COMPOUND REST (G0768)
COMPOUND REST (G0769)
COMPOUND REST SWIVEL BASE
COMPOUND REST LEADSCREW
KEY 3 X 3 X 12
COMPOUND REST LEADSCREW BRACKET
CAP SCREW M5-.8 X 12
COMPOUND REST GRADUATED DIAL
CURVED PLATE
COMPOUND REST HANDWHEEL
HANDWHEEL HANDLE
SHOULDER SCREW E116, 53
CAP SCREW M4-.7 X 8
SET SCREW M5-.8 X 10
BUSHING
BALL OILER 5MM PRESS-IN
CAP SCREW M4-.7 X 20
CROSS SLIDE GIB
PHLP HD SCR M3-.5 X 10
V-WAY WIPER COVER
V-WAY WIPER
CAP SCREW M5-.8 X 10
SADDLE CLAMP SLIDE (FR)
CROSS SLIDE LEADSCREW NUT

142
144
145
146
147
149
150
151
152
154
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
176
177
178
179
179-1
180

CROSS SLIDE LEADSCREW
CROSS SLIDE HANDWHEEL
CROSS SLIDE GRADUATED DIAL
CAP SCREW M6-1 X 50
CROSS SLIDE LEADSCREW BRACKET
CAP SCREW M8-1.25 X 30
SADDLE CLAMP SLIDE (RR)
STRAIGHT WAY WIPER
STRAIGHT WAY WIPER COVER
CROSS SLIDE (G0768)
CROSS SLIDE (G0769)
SADDLE
WRENCH 6 X 7MM OPEN-ENDS
WRENCH 8 X 10MM OPEN-ENDS
WRENCH 14 X 16MM OPEN-ENDS
SCREWDRIVER PHILLIPS #2
SCREWDRIVER FLAT #2
HEX WRENCH 8MM
HEX WRENCH 6MM
HEX WRENCH 5MM
HEX WRENCH 4MM
HEX WRENCH 3MM
SPANNER WRENCH
TOOL POST WRENCH 8MM SQUARE
LATHE CHUCK KEY 8MM STD
FACEPLATE 6-3/4"
3-JAW CHUCK 4"
3-JAW CHUCK EXTERNAL JAW SET
DEAD CENTER MT#3
DEAD CENTER MT#2
TOOLBOX
4-JAW CHUCK 4" W/KEY
DRILL CHUCK ARBOR MT#2 X B16 (G0769)
DRILL CHUCK B16 1-13MM W/KEY (G0769)
DRILL CHUCK KEY 8MM STD 11 SD-16MM (G0769)
LOCK NUT M8-1.25

P0768101
P0768102
P0768103
P0768104
P0768105
P0768106
P0768107
P0768108
P0768109
P0768110
P0768111
P0768112
P0768113
P0768114
P0769114
P0768115
P0768116
P0768117
P0768118
P0768119
P0768120
P0768123
P0768124
P0768126
P0768127
P0768128
P0768129
P0768130
P0768131
P0768132
P0768133
P0768134
P0768135
P0768136
P0768138
P0768139
P0768141

P0768142
P0768144
P0768145
P0768146
P0768147
P0768149
P0768150
P0768151
P0768152
P0768154
P0769145
P0768155
P0768156
P0768157
P0768158
P0768159
P0768160
P0768161
P0768162
P0768163
P0768164
P0768165
P0768166
P0768167
P0768168
P0768169
P0768170
P0768171
P0768172
P0768173
P0768176
P0768177
P0769178
P0769179
P0769179-1
P0768180

Please Note: We do our best to stock replacement parts whenever possible, but we cannot guarantee that all parts shown here
are available for purchase. Call (800) 523-4777 or visit our online parts store at www.grizzly.com to check for availability.

Model G0768/G0769 (Mfd. Since 8/15)

-97-

Steady & Follow Rest
174

175

174-5
174-6

175-4

174-4

175-5
174-3
175-3

175-6

175-2

174-2

175-1

174-1

REF PART #

DESCRIPTION

REF PART #

DESCRIPTION

174
174-1
174-2
174-3
174-4
174-5
174-6

STEADY REST ASSEMBLY
HEX NUT M8-1.25
LOCK WASHER 8MM
STEADY REST
STEADY REST FINGER
ADJUSTING SCREW
T-BOLT M8-1.25 X 26

175
175-1
175-2
175-3
175-4
175-5
175-6

FOLLOW REST ASSEMBLY
HEX NUT M8-1.25
LOCK WASHER 8MM
FOLLOW REST
ADJUSTING SCREW
FOLLOW REST FINGER
T-BOLT M8-1.25 X 26

-98-

P0768174
P0768174-1
P0768174-2
P0768174-3
P0768174-4
P0768174-5
P0768174-6

P0768175
P0768175-1
P0768175-2
P0768175-3
P0768175-4
P0768175-5
P0768175-6

Model G0768/G0769 (Mfd. Since 8/15)

Apron
202

203
204
206
205
207

231
228
226

230

227
208

210

211

229

212
209

214
225
235
236

234
233

213

224
232
218

237

215
216

223
238

217

222
221

219

220

REF PART #

DESCRIPTION

REF PART #

DESCRIPTION

202
203
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219

LOCK NUT M8-1.25
CARRIAGE HANDWHEEL (G0768)
CARRIAGE HANDWHEEL (G0769)
CURVED PLATE
CAP SCREW M5-.8 X 10
CARRIAGE GRADUATED DIAL
HANDWHEEL BRACKET
CAP SCREW M8-1.25 X 25
SET SCREW M5-.8 X 8
APRON
KEY 3 X 3 X 8
GEAR SHAFT 14T
SHAFT
COMBO GEAR 44/21T
SET SCREW M4-.7 X 35
HEX NUT M4-.7
HALF NUT 2-PC SET
DOWEL PIN 4 X 10
CAP SCREW M4-.7 X 10

220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238

SUPPORT BAR
SET SCREW M6-1 X 8
COMPRESSION SPRING 0.6 X 3.5 X 12
STEEL BALL 4.5MM
CAP SCREW M4-.7 X 12
HEX NUT M4-.7
HALF NUT SHAFT
ROLL PIN 3 X 30
HALF NUT LEVER HUB
SET SCREW M5-.8 X 6
HALF NUT LEVER M5-.8 X 5
HANDWHEEL HANDLE M5-.8 X 8
HALF NUT MOUNT
THREAD DIAL BUSHING
THREAD DIAL INDICATOR
CAP SCREW M4-.7 X 10
THREAD DIAL BODY
CAP SCREW M6-1 X 35
COMBO GEAR 32T

P0768202
P0768203
P0769203
P0768204
P0768205
P0768206
P0768207
P0768208
P0768209
P0768210
P0768211
P0768212
P0768213
P0768214
P0768215
P0768216
P0768217
P0768218
P0768219

Model G0768/G0769 (Mfd. Since 8/15)

P0768220
P0768221
P0768222
P0768223
P0768224
P0768225
P0768226
P0768227
P0768228
P0768229
P0768230
P0768231
P0768232
P0768233
P0768234
P0768235
P0768236
P0768237
P0768238

-99-

Gearbox
318

319

317
316

320

321

346
322

315
314
313

308 309

310

307

323

343

340
324

311
341
342

306
305
304
303
302
301

312

345

325

326
327 328

339
338

337

336
335

334

329

332

333

344

REF PART #

DESCRIPTION

REF PART #

DESCRIPTION

301
302
303
304
305
306
307
308
308
309
310
310
311
312
313
314
314
315
316
317
318
319
320
321
321

DIRECTION INDICATOR PLATE
SET SCREW M6-1 X 10
COMPRESSION SPRING 0.8 X 4 X 16
STEEL BALL 5MM
DIRECTION KNOB
SHAFT BRACKET
CAP SCREW M3-.5 X 6
GEARBOX FRONT PANEL (G0768)
GEARBOX FRONT PANEL (G0769)
CAP SCREW M5-.8 X 16
GEARBOX FRONT COVER (G0768)
GEARBOX FRONT COVER (G0769)
SHAFT
ROCKER ARM
GEAR 30T
SHAFT (G0768)
SHAFT (G0769)
BALL BEARING 6201-2RZ
BEARING FLANGE
CAP SCREW M5-.8 X 12
EXT RETAINING RING 12MM
KEY 3 X 3 X 6
KEY 4 X 4 X 28
GEARBOX CASTING (G0768)
GEARBOX CASTING (G0769)

322
322
323
324
325
326
327
327
328
329
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346

SHAFT (G0768)
SHAFT (G0769)
SET SCREW M4-.7 X 8
COMBO GEAR 30/30T
COMBO GEAR 30/30T W/FLANGE
KEY 4 X 4 X 40
SHAFT (G0768)
SHAFT (G0769)
BALL BEARING 6201-2RZ
COUPLER
CAP SCREW M5-.8 X 12
BEARING FLANGE
ROLL PIN 5 X 22
CAP SCREW M6-1 X 16
FLAT WASHER 6MM
SHAFT
GEAR 30T
EXT RETAINING RING 14MM
BUSHING
SHIFTING FORK
ROLL PIN 4 X 20
SET SCREW M5-.8 X 12
FLAT HD CAP SCR M4-.7 X 12
SET SCREW M4-.7 X 6
SET SCREW M8-1.25 X 8

-100-

P0768301
P0768302
P0768303
P0768304
P0768305
P0768306
P0768307
P0768308
P0769308
P0768309
P0768310
P0769310
P0768311
P0768312
P0768313
P0768314
P0769314
P0768315
P0768316
P0768317
P0768318
P0768319
P0768320
P0768321
P0769321

P0768322
G0769322
P0768323
P0768324
P0768325
P0768326
P0768327
P0769327
P0768328
P0768329
P0768332
P0768333
P0768334
P0768335
P0768336
P0768337
P0768338
P0768339
P0768340
P0768341
P0768342
P0768343
P0768344
P0768345
P0768346

Model G0768/G0769 (Mfd. Since 8/15)

Bed & End Gears
437

438
401 407

409

408

401

435
436

403
404
405

408

406

412
414
411
413
432
433

439

419

404
405

410
434

402

440

428
429
430

422

431

421 420

423
424

418

416 422 425

441

REF PART #

DESCRIPTION

REF PART #

DESCRIPTION

401
402
403
404
405
406
407
408
409
410
411
412
413
414
416
418
418
419
419
420
421

EXT RETAINING RING 8MM
GEAR 84T
GEAR 30T
BUSHING
THREADED SHAFT
SHAFT RETAINER M8-1.25
GEAR 20T
GEAR 80T
HEX NUT M10-1.5
FLAT WASHER 10MM
BUSHING
PIVOT ARM
CAP SCREW M6-1 X 35
BUSHING
CAP SCREW M6-1 X 14
LONGITUDINAL LEADSCREW (G0768)
LONGITUDINAL LEADSCREW (G0769)
BED (G0768)
BED (G0769)
RACK
CAP SCREW M2-.4 X 12

422
423
424
425
428
429
430
431
432
433
434
435
436
437
437
438
438
439
440
441

THRUST BEARING 51100
LEADSCREW BRACKET (RH)
COUPLING NUT M8-1.25 X 20
SET SCREW M4-.7 X 12
GEAR 33T
GEAR 40T
GEAR 50T
GEAR 53T
GEAR 55T
GEAR 57T
GEAR 60T
GEAR 63T
GEAR 65T
BACK SPLASH (G0768)
BACK SPLASH (G0769)
CHIP PAN (G0768)
CHIP PAN (G0769)
GEAR 70T
GEAR 71T
GEAR 72T

P0768401
P0768402
P0768403
P0768404
P0768405
P0768406
P0768407
P0768408
P0768409
P0768410
P0768411
P0768412
P0768413
P0768414
P0768416
P0768418
P0769418
P0768419
P0769419
P0768420
P0768421

Model G0768/G0769 (Mfd. Since 8/15)

P0768422
P0768423
P0768424
P0768425
P0768428
P0768429
P0768430
P0768431
P0768432
P0768433
P0768434
P0768435
P0768436
P0768437
P0769437
P0768438
P0769438
P0768439
P0768440
P0768441

-101-

Tailstock
519
520

518
516

515

513

514

521
522

512

511
510

508

509

523

507
524

506

503

535
531

525

505 504

532

502

501

526
534

527
528

533

530

529

REF PART #

DESCRIPTION

REF PART #

DESCRIPTION

501
502
503
504
504
505
506
507
508
509
510
511
512
513
514
515
516
518

SHOULDER SCREW M5-.8 X 6
HANDWHEEL HANDLE
COUPLING NUT M6-1
QUILL HANDWHEEL (G0768)
QUILL HANDWHEEL (G0769)
CURVED PLATE
QUILL GRADUATED DIAL
CAP SCREW M4-.7 X 12
BEARING FLANGE
THRUST BEARING 51100
QUILL LEADSCREW
KEY 4 X 4 X 12
STUD-SE M6-1 X 30, 10
TAILSTOCK LOCK LEVER M8-1.25
ECCENTRIC SHAFT
BALL OILER 6MM PRESS-IN
SET SCREW M5-.8 X 8
QUILL LOCK LEVER M6-1 X 5

519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535

QUILL LOCK HUB
QUILL LOCK PLUNGER
QUILL
TAILSTOCK CASTING
SET SCREW M8-1.25 X 25
LOCK BLOCK
HEX NUT M8-1.25
TAILSTOCK BASE
CLAMP PLATE
FLAT WASHER 8MM
HEX BOLT M8-1.25 X 40
OFFSET PLATE, TOP
SET SCREW M5-.8 X 8
SET SCREW M8-1.25 X 25
SET SCREW M6-1 X 6 CONE-PT
RIVET 2 X 5
OFFSET PLATE, BOTTOM

-102-

P0768501
P0768502
P0768503
P0768504
P0769504
P0768505
P0768506
P0768507
P0768508
P0768509
P0768510
P0768511
P0768512
P0768513
P0768514
P0768515
P0768516
P0768518

P0768519
P0768520
P0768521
P0768522
P0768523
P0768524
P0768525
P0768526
P0768527
P0768528
P0768529
P0768530
P0768531
P0768532
P0768533
P0768534
P0768534

Model G0768/G0769 (Mfd. Since 8/15)

G0769 Mill Column
607

608

606
605
609

604
602

603

611

610

601

613
612
614
615

616
617
618
619
620
616
618

617

REF PART #

DESCRIPTION

REF PART #

DESCRIPTION

601
602
603
604
605
606
607
608
609
610

MILL HEADSTOCK MOUNT
Z-AXIS GIB
GIB ADJUSTMENT SCREW
COLUMN
COLUMN TOP COVER
CAP SCREW M6-1 X 25
LOCK NUT M6-1
Z-AXIS HANDWHEEL
Z-AXIS GRADUATED DIAL
THRUST BEARING 51201

611
612
613
614
615
616
617
618
619
620

SHOULDER SCREW M5-.8 X 55, 10
KEY 4 X 4 X 20
HANDWHEEL HANDLE
Z-AXIS LEADSCREW NUT
Z-AXIS LEADSCREW
CAP SCREW M8-1.25 X 40
LOCK WASHER 8MM
FLAT WASHER 8MM
COLUMN BASE
ROLL PIN 6 X 25

P0769601
P0769602
P0769603
P0769604
P0769605
P0769606
P0769607
P0769608
P0769609
P0769610

Model G0768/G0769 (Mfd. Since 8/15)

P0769611
P0769612
P0769613
P0769614
P0769615
P0769616
P0769617
P0769618
P0769619
P0769620

-103-

G0769 Mill Headstock
778

708

777

719

709

720

701

787

702

721

703
704

710

783

711
712

784
722

726

705
715

706

729

725
727

716

710

707

730

723

728

714

711

731

724

782
713

786

718

717

775

738

740

739

774

740

736

772
771
770 769

732
765

737

764

788
751
742
741

743
745
744

750

753

752

748

747

746
748

-104-

762

761 767
743

763
760
785

749

768

773

759

755
757

758
756

Model G0768/G0769 (Mfd. Since 8/15)

G0769 Mill Headstock
REF PART #

DESCRIPTION

REF PART #

DESCRIPTION

701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
736
737
738
739
740
741
742
743

ALIGNMENT WASHER
BUSHING
COMPRESSION SPRING 2.5 X 28 X 100
EXT RETAINING RING 45MM
BALL BEARING 6909ZZ
COMBO GEAR 53T/65T
ANGULAR CONTACT BEARING 6007RZ
EXT RETAINING RING 15MM
GEAR 37T
EXT RETAINING RING 32MM
BALL BEARING 6002ZZ
COMBO GEAR 39T/51T
SHAFT
KEY 5 X 5 X 50
KEY 5 X 5 X 12
FORK
FORK ARM
CAP SCREW M8-1.25 X 8
DRAWBAR COVER
MOTOR COVER
MILL MOTOR 600W 110V DC
FLAT WASHER 4MM
CAP SCREW M4-.7 X 8
CAP SCREW M6-1 X 14
L-BRACKET
SPEED SENSOR
MOTOR MOUNT
CAP SCREW M5-.8 X 12
SPACER 10MM
GEAR 25T
KEY 4 X 4 X 6
HEADSTOCK FRONT PANEL
ADJUSTABLE HANDLE M8-1.25 X 20
LOCK PLUNGER, BRASS
MILL HEADSTOCK CASTING
HEADSTOCK REAR COVER
CAP SCREW M4-.7 X 8
FINE DOWNFEED KNOB
SET SCREW M5-.8 X 6
HANDWHEEL CURVED PLATE SPRING

744
745
746
747
748
749
750
751
752
753
755
756
757
758
759
760
761
762
763
764
765
767
768
769
770
771
772
773
774
775
777
778
782
783
784
785
786
787
788

FINE DOWNFEED GRADUATED DIAL
WORM SHAFT
SPINDLE MT#2
QUILL SEAL, RUBBER (LOWER)
TAPERED ROLLER BEARING 32005
MILL QUILL
QUILL SEAL 58 X 2.65, RUBBER (UPPER)
PRELOAD ADJUSTMENT NUT
WORM HOUSING
HEX BOLT M6-1 X 25
COARSE DOWNFEED LEVER M10-1.5 X 14
KNOB BOLT M6-1 X 30
COARSE DOWNFEED HUB
COARSE DOWNFEED GRADUATED DIAL
COMPRESSION SPRING 1.2 X 12 X 2.5
CAP SCREW M4-.7 X 40
FLANGE
BUSHING
WORM GEAR
KEY 4 X 4 X 12
GEAR SHAFT 16T
HI/LO INDICATOR PLATE
SET SCREW M8-1.25 X 8
COMPRESSIONS SPRING 0.8 X 5 X 25
STEEL BALL 6.5MM
HI/LO HANDWHEEL
SET SCREW M5-.8 X 16
SPEED KNOB PLATE
FORK SHAFT FLANGE
FORK SHAFT
SPINDLE RING 16MM
HEX BOLT M3-.5 X 8
HEX BOLT M3-.5 X 6
SPEED SENSOR CORD
HEX BOLT M3-.5 X 6
DRAWBAR 3/8-16 X 8-1/2
MOTOR CARBON BRUSH 2-PC SET
MOTOR CARBON BRUSH CAP
PRELOAD ADJUSTMENT SCREW M5-.8 X 10

P0769701
P0769702
P0769703
P0769704
P0769705
P0769706
P0769707
P0769708
P0769709
P0769710
P0769711
P0769712
P0769713
P0769714
P0769715
P0769716
P0769717
P0769718
P0769719
P0769720
P0769721
P0769722
P0769723
P0769724
P0769725
P0769726
P0769727
P0769728
P0769729
P0769730
P0769731
P0769732
P0769736
P0769737
P0769738
P0769739
P0769740
P0769741
P0769742
P0769743

Model G0768/G0769 (Mfd. Since 8/15)

P0769744
P0769745
P0769746
P0769747
P0769748
P0769749
P0769750
P0769751
P0769752
P0769753
P0769755
P0769756
P0769757
P0769758
P0769759
P0769760
P0769761
P0769762
P0769763
P0769764
P0769765
P0769767
P0769768
P0769769
P0769770
P0769771
P0769772
P0769773
P0769774
P0769775
P0769777
P0769778
P0769782
P0769783
P0769784
P0769785
P0769786
P0769787
P0769788

-105-

G0768 Labels & Cosmetics
703

701

702

713
705
704

712

711

710

709

708

707

706

REF PART #

DESCRIPTION

REF PART #

DESCRIPTION

701
702
703
704
705
706
707

FEED RATE CHART LABEL
COMBO WARNING LABEL
GENERAL WARNINGS LABEL
VARIABLE SPEED LABEL
GRIZZLY PUTTY TOUCH-UP PAINT
GRIZZLY GREEN TOUCH-UP PAINT
THREAD DIAL CHART

708
709
710
711
712
713

SPINDLE SPEED HAZARD LABEL
GEARBOX LABEL
SPECIFICATIONS LABEL
ELECTRICITY LABEL
PINCH/ENTANGLEMENT WARNING LABEL
OVERHEATING MOTOR NOTICE LABEL

P0768701
P0768702
P0768703
P0768704
P0768705
P0768706
P0768707

P0768708
P0768709
P0768710
P0768711
P0768712
P0768713

Safety labels help reduce the risk of serious injury caused by machine hazards. If any label comes
off or becomes unreadable, the owner of this machine MUST replace it in the original location
before resuming operations. For replacements, contact (800) 523-4777 or www.grizzly.com.

-106-

Model G0768/G0769 (Mfd. Since 8/15)

G0769 Labels & Cosmetics
811

801

810

809

815

812
812
812

802

808
807

813
813
813
806

814
814
814
805

804

803

REF PART #

DESCRIPTION

REF PART #

DESCRIPTION

801
802
803
804
805
806
807
808

MACHINE ID LABEL
GRIZZLY PUTTY TOUCH-UP PAINT
THREAD DIAL CHART
GRIZZLY GREEN TOUCH-UP PAINT
FEED DIRECTION LABEL
CONTROL PANEL LABEL
GEAR CONFIGURATION CHART LABEL
DISCONNECT POWER WARNING LABEL

809
810
811
812
813
814
815

SPINDLE SPEED HAZARD LABEL
COMBO WARNING LABEL
GRIZZLY LOGO LABEL (RED)
LOW/HI SPEED LABEL
ENTANGLEMENT HAZARD LABEL
ELECTRICITY LABEL
OVERHEATING MOTOR NOTICE LABEL

P0769801
P0769802
P0769803
P0769804
P0769805
P0769806
P0769807
P0769808

P0769809
P0769810
P0769811
P0769812
P0769813
P0769814
P0769815

Model G0768/G0769 (Mfd. Since 8/15)

-107-

G0768 Electrical Component Diagram
Top Panel

904

903

905

902
Front Panel

Inside Electrical
Compartment

906
911
907
912

910
908

909

Rear Panel

REF PART #

DESCRIPTION

REF PART #

DESCRIPTION

902
903
904
905
906
907

E-STOP KEDU JD17B 120V
ROTARY SWITCH KEDU ZHA EN61058
DRO CIRCUIT BOARD
POTENTIOMETER WX14-12 1K7
FUSE 15A 250V FAST-ACTING GLASS
FUSE HOLDER MF528 15A 250V

908
909
910
911
912

SPEED CONTROL CIRCUIT BOARD
FILTER CIRCUIT BOARD
RPM SENSOR
FUSE 10A 250V FAST-ACTING GLASS
FUSE HOLDER MF528 10A 250V

-108-

P0768902
P0768903
P0768904
P0768905
P0768906
P0768907

P0768908
P0768909
P0768910
P0768911
P0768912

Model G0768/G0769 (Mfd. Since 8/15)

G0769 Electrical Component Diagram
Top Panel

901

910

903

904

905

902
Front Panel

911
912

Inside Electrical
Compartment

906
911
907
912

910
908

909

Rear Panel

REF PART #

DESCRIPTION

REF PART #

DESCRIPTION

901
902
903
904
905
906

ROTARY SWITCH LW8-10/6
E-STOP KEDU JD17B 120V
ROTARY SWITCH KEDU ZHA EN61058
DRO CIRCUIT BOARD
POTENTIOMETER WX14-12 1K7
FUSE 15A 250V FAST-ACTING GLASS

907
908
909
910
911
912

FUSE HOLDER MF528 15A 250V
SPEED CONTROL CIRCUIT BOARD
FILTER CIRCUIT BOARD
RPM SENSOR
FUSE 10A 250V FAST-ACTING GLASS
FUSE HOLDER MF528 10A 250V

P0769901
P0769902
P0769903
P0769904
P0769905
P0769906

Model G0768/G0769 (Mfd. Since 8/15)

P0769907
P0769908
P0769909
P0769910
P0769911
P0769912

-109-

SECTION 11: APPENDIX
Threading & Feeding
Chart

Thread Dial Chart
INDICATOR TABLE

in/
40

0.0071"

A
C
E

0.0037" 0.0068"

A B 84 30 72 30 B
C D 20 80 33 80 D
80
E F 80
F

TPI
9
12
18
24
All Others

SCALE
1-8
1-8
1-8
1-8
1, 4, 7

mm
AB
CD
EF

0.40 0.50 0.60 0.70 0.80 1.00
55 60 70 57
72 80
80 30 70 33 53 30 60 40 40 30 40 33
80
80 70
80 80 80

1.25 1.50 1.75 2.00 2.50 3.00

A B 53

C D 71 63 7163 20 33 3060 40 71 40 71
E F 60 50 80 84 60 50

n/1"
9

10 11 12 13 14 16 18

A B 53 57

57 72

C D 80 80 72 8072 70 40 60 40 60 40 60 63
E F 30

33 40

80 60

19 20 22 24 32 40 44
A B 53

53 72

C D 80 63 80 60 7153 55 4030 55 33 55 30
EF

-110-

55 80

Model G0768/G0769 (Mfd. Since 8/15)

WARRANTY CARD
Name _____________________________________________________________________________
Street _____________________________________________________________________________
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Phone # ____________________ Email _________________________________________________
Model # ____________________ Order # _______________________ Serial # __________________
The following information is given on a voluntary basis. It will be used for marketing purposes to help us develop
better products and services. Of course, all information is strictly confidential.

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Would you allow us to use your name as a reference for Grizzly customers in your area?
Note: We never use names more than 3 times.
_____ Yes
_____No

10. Comments: _____________________________________________________________________
_________________________________________________________________________________
_________________________________________________________________________________
_________________________________________________________________________________

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GRIZZLY INDUSTRIAL, INC.
P.O. BOX 2069
BELLINGHAM, WA 98227-2069

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Send a Grizzly Catalog to a friend:
Name_______________________________
Street_______________________________
City______________State______Zip______
TAPE ALONG EDGES--PLEASE DO NOT STAPLE

WARRANTY & RETURNS
Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from
the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse,
negligence, accidents, repairs or alterations or lack of maintenance. This is Grizzly’s sole written warranty
and any and all warranties that may be implied by law, including any merchantability or fitness, for any particular purpose, are hereby limited to the duration of this written warranty. We do not warrant or represent
that the merchandise complies with the provisions of any law or acts unless the manufacturer so warrants.
In no event shall Grizzly’s liability under this warranty exceed the purchase price paid for the product and
any legal actions brought against Grizzly shall be tried in the State of Washington, County of Whatcom.
We shall in no event be liable for death, injuries to persons or property or for incidental, contingent, special,
or consequential damages arising from the use of our products.
To take advantage of this warranty, contact us by mail or phone and give us all the details. We will then issue
you a “Return Number,’’ which must be clearly posted on the outside as well as the inside of the carton. We
will not accept any item back without this number. Proof of purchase must accompany the merchandise.
The manufacturers reserve the right to change specifications at any time because they constantly strive to
achieve better quality equipment. We make every effort to ensure that our products meet high quality and
durability standards and we hope you never need to use this warranty.
Please feel free to write or call us if you have any questions about the machine or the manual.
Thank you again for your business and continued support. We hope to serve you again soon.

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Grizzly G0768 User Manual To The Bf2821a0 7219 4865 986a 8e2204280c84

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