Grizzly Lathe G0765 M

User Manual: Grizzly Lathe G0765

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Page Count: 76

MODEL G0765
7" X 14" BENCHTOP LATHE
OWNER'S MANUAL
(For models manufactured since 5/15)
COPYRIGHT © MARCH, 2014 BY GRIZZLY INDUSTRIAL, INC. REVISED DECEMBER, 2017 (HE)
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#BLTSDM16229 PRINTED IN CHINA V2.03.16
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 compre-
hension, 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 equip-
ment, such as those dust masks that are specially designed to filter
out microscopic particles.
Table of Contents
INTRODUCTION ............................................... 2
Machine Description ...................................... 2
Contact Info.................................................... 2
Manual Accuracy ........................................... 2
Identification ................................................... 3
Controls & Components ................................. 4
G0765 Data Sheet ......................................... 6
SECTION 1: SAFETY ....................................... 8
Safety Instructions for Machinery .................. 8
Additional Safety for Metal Lathes ............... 10
Additional Chuck Safety ............................... 11
SECTION 2: POWER SUPPLY ...................... 12
SECTION 3: SETUP ....................................... 14
Preparation .................................................. 14
Unpacking .................................................... 14
Needed for Setup ......................................... 14
Inventory ...................................................... 15
Cleanup ........................................................ 16
Site Considerations ...................................... 17
Lifting & Placing ........................................... 18
Assembly ..................................................... 18
Power Connection........................................ 18
Test Run ...................................................... 19
Spindle Break-In .......................................... 21
Recommended Adjustments ........................ 21
SECTION 4: OPERATIONS ........................... 22
Operation Overview ..................................... 22
Chuck & Faceplate Mounting....................... 23
Installation & Removal Device ..................... 23
Chuck Installation......................................... 24
Scroll Chuck Clamping ................................ 25
Changing Jaw Set ........................................ 25
Faceplate ..................................................... 27
Tailstock ....................................................... 28
Centers ........................................................ 32
Steady Rest ................................................. 34
Compound Rest ........................................... 35
Four-Way Tool Post ..................................... 35
Manual Feed ................................................ 37
Spindle Speed.............................................. 37
Power Feed.................................................. 39
End Gears .................................................... 41
Threading ..................................................... 44
SECTION 5: ACCESSORIES ......................... 47
SECTION 6: MAINTENANCE ......................... 48
Schedule ...................................................... 48
Cleaning/Protecting ...................................... 48
Lubrication ................................................... 49
Machine Storage .......................................... 51
SECTION 7: SERVICE ................................... 52
Troubleshooting ........................................... 52
Backlash Adjustment ................................... 54
Leadscrew End-Play Adjustment ................. 54
Gib Adjustment ............................................ 55
Half Nut Adjustment ..................................... 56
Fuse Replacement ....................................... 56
Brush Replacement ..................................... 57
Timing Belt Tension & Replacement ........... 58
SECTION 8: WIRING ...................................... 60
Wiring Safety Instructions ............................ 60
Control Panel Wiring .................................... 61
Control Panel Wiring Photos........................ 62
Motor/Speed Sensor/ Plug Wiring ............... 63
SECTION 9: PARTS ....................................... 64
Main ............................................................. 64
Steady Rest ................................................. 67
Labels & Cosmetics (Front) ......................... 68
Labels & Cosmetics (Rear) .......................... 69
SECTION 10: APPENDIX ............................... 70
Threading Charts ......................................... 70
WARRANTY & RETURNS ............................. 73
-2- Model G0765 (Mfd. Since 5/15)
INTRODUCTION
Machine Description
The metal lathe is used to remove material from
a workpiece that is mounted to the spindle and
rotated over the bed. The cutting tool is mounted
alongside the bed and moved against the spin-
ning workpiece to cut it.
Typical metal lathe cutting operations include fac-
ing, turning, parting, drilling, reaming, grooving,
knurling, and threading. There are a wide variety
of tools and workpiece holding devices available
for each of these operations.
The G0765 features an electronic variable-speed
control and digital RPM display that make it pos-
sible to select speeds within the selected range
while the machine is running.
We stand behind our machines! If you have ques-
tions 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
1815 W. Battlefield
Springfield, MO 65807
Phone: (570) 546-9663
Email: techsupport@grizzly.com
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
Contact Info
We are proud to provide a high-quality owner’s
manual with your new machine!
We
made every effort to be exact with the
instruc-
tions, 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. W
e post
current
manuals and
manual updates for free
on our web-
site 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 documenta-
tion is available for your machine.
Manufacture Date
Serial Number
Manual Accuracy
Model G0765 (Mfd. Since 5/15) -3-
Identification
A. On/Off Switch w/Emergency Stop Button
B. Power Light
C. High/Low Range Lever
D. Feed Direction Lever
E. 3-Jaw Chuck
F. Steady Rest
G. 4-Way Tool Post
H. Backsplash
I. Compound Rest
J. MT#2 Dead Center
K. Tailstock (see Page 6 for details)
L. Bedway
M. Compound Rest Handwheel
N. Chip Pan
O. Thread Dial
P. Half Nut Lever
Q. Cross Slide Handwheel
R. Carriage Handwheel
S. Leadscrew
T. Spindle Direction Switch
U. Fuse
V. Variable Speed Dial
W. End Cover
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.
Untrained users have an increased risk
of seriously injuring themselves with this
machine. Do not operate this machine until
you have understood this entire manual and
received proper training.
Figure 1. Model G0765 identification.
F
E
T
N
L
K
O
P
Q
R
B
A
G H
U
V
M
W
S
D
C
I
J
Become familiar with the names and locations of the controls and features shown below to better understand
the instructions in this manual.
-4- Model G0765 (Mfd. Since 5/15)
Controls &
Components
Refer to Figures 2–6 and the following descrip-
tions to become familiar with the basic controls of
this lathe.
To reduce your risk of
serious injury, read this
entire manual BEFORE
using machine.
Control Panel
Figure 2. Control panel.
B
A
C
FE
A. On/Off Switch w/Emergency Stop Button:
When pressed, cuts power to motor and
control panel. To reset, press in side tab, lift
switch cover, and press On button.
B. Spindle Speed RPM Display: Shows a digi-
tal readout of the spindle speed.
C. Power Light: Illuminates when machine is
connected to power source, Emergency Stop
Button is reset, and On button is pressed.
D. Spindle Switch: Starts, stops, and reverses
spindle rotation.
E. Fuse: Protects control panel in case of an
electrical overload.
F. Variable Speed Dial: Controls the variable
speed of the spindle.
Carriage
G. 4-Way Tool Post: Holds up to four cutting
tools at once that can be individually indexed
to the workpiece.
H. Compound Rest Handwheel: Moves the
tool toward and away from the workpiece at
the preset angle of the compound rest.
I. Thread Dial: Indicates when to engage the
half nut during threading operations.
J. Half Nut Lever: Engages/disengages half
nut for power feed and threading operations.
K. Cross Slide Handwheel: Moves the cross
slide toward and away from the workpiece.
L. Carriage Handwheel: Moves the carriage
along the bedway.
Figure 3. Carriage controls.
G
H
I
K
L
J
D
Model G0765 (Mfd. Since 5/15) -5-
Tailstock Rear Controls
Figure 4. Tailstock controls.
O
MN
P
Q
M. Tailstock Quill: Moves a tool or center
mounted in the tailstock toward or away from
the workpiece.
N. Tailstock Quill Lock Lever: Secures the
quill position.
O. Tailstock Lock Lever: Secures tailstock in
position along the bedway.
P. Graduated Scale: Indicates quill movement
in increments of 0.001", with one full revolu-
tion equaling 0.04" of quill travel.
Q. Quill Handwheel: Moves quill toward or
away from spindle.
R. Offset Scale: Indicates relative distance of
tailstock offset from spindle centerline.
S. Tailstock Offset Screws: Adjusts tailstock
offset left or right from spindle centerline (1 of
2).
R
S
T. High/Low Range Lever: Sets the spindle
speed range to LOW (100–1000 RPM) or
HIGH (100–2000 RPM). Do NOT shift while
lathe is running or damage to machine may
occur!
U. Feed Direction Lever: Used to select
leadscrew rotation direction. Up is for clock-
wise rotation and leftward carriage move-
ment. Center is neutral. Down is for counter-
clockwise leadscrew rotation and rightward
carriage movement.
End Gears
Figure 6. End gear components.
End
Gears
Configuring the end gears (shown in Figure
6) controls the speed of the leadscrew for thread-
ing or power feed operations.
Figure 5. Rear controls.
T
U
-6- Model G0765 (Mfd. Since 5/15)
The information contained herein is deemed accurate as of 11/30/2017 and represents our most recent product specifications.
Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. PAGE 1 OF 3
Model G0765
MACHINE DATA
SHEET
Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901
MODEL G0765 7" X 14" VARIABLE‐SPEED BENCHTOP
LATHE
Product Dimensions:
Weight................................................................................................................................................................ 88 lbs.
Width (side-to-side) x Depth (front-to-back) x Height............................................................................. 30 x 9 x 10 in.
Footprint (Length x Width)................................................................................................................. 29-3/4 x 8-1/2 in.
Shipping Dimensions:
Type.......................................................................................................................................................... Wood Crate
Content........................................................................................................................................................... Machine
Weight.............................................................................................................................................................. 110 lbs.
Length x Width x Height....................................................................................................................... 33 x 15 x 15 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......................................................................................................................................... 18 AWG
Plug Included.......................................................................................................................................................... Yes
Included Plug Type.................................................................................................................................... NEMA 5-15
Switch Type........................................................................................... ON/OFF Push Button Switch w/Safety Cover
Motors:
Main
Horsepower............................................................................................................................................. 3/4 HP
Phase............................................................................................................................................ Single-Phase
Amps............................................................................................................................................................ 10A
Speed................................................................................................................................................ 5000 RPM
Type................................................................................................................................. Universal Brush Type
Power Transfer .................................................................................................................................. Belt Drive
Bearings........................................................................................................... Shielded & Permanently Sealed
Main Specifications:
Operation Info
Swing Over Bed........................................................................................................................................... 7 in.
Distance Between Centers.................................................................................................................. 13-3/4 in.
Swing Over Cross Slide......................................................................................................................... 2-1/8 in.
Swing Over Saddle...................................................................................................................................... 5 in.
Maximum Tool Bit Size........................................................................................................................... 5/16 in.
Compound Travel.................................................................................................................................. 2-3/4 in.
Carriage Travel.................................................................................................................................... 12-1/2 in.
Cross Slide Travel................................................................................................................................. 2-3/4 in.
Model G0765 (Mfd. Since 5/15) -7-
The information contained herein is deemed accurate as of 11/30/2017 and represents our most recent product specifications.
Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. PAGE 2 OF 3
Model G0765
Headstock Info
Spindle Bore........................................................................................................................................... 0.78 in.
Spindle Size................................................................................................................................................. 3 in.
Spindle Taper............................................................................................................................................ MT#3
Number of Spindle Speeds................................................................................................................... Variable
Spindle Speeds....................................................................................................................... 100 – 2000 RPM
Spindle Type........................................................................................................................ Intrinsic Back Plate
Spindle Bearings...................................................................... Sealed & Permanently Lubricated Ball Bearing
Spindle Length....................................................................................................................................... 7-1/4 in.
Spindle Length with 3-Jaw Chuck......................................................................................................... 9-1/8 in.
Tailstock Info
Tailstock Quill Travel................................................................................................................................... 2 in.
Tailstock Taper.......................................................................................................................................... MT#2
Tailstock Barrel Diameter..................................................................................................................... 0.870 in.
Threading Info
Number of Longitudinal Feeds......................................................................................................................... 1
Range of Longitudinal Feeds......................................................................................................... 0.004 in./rev.
Number of Inch Threads................................................................................................................................. 18
Range of Inch Threads.................................................................................................................... 12 – 52 TPI
Number of Metric Threads.............................................................................................................................. 10
Range of Metric Threads.................................................................................................................. 0.4 – 2 mm
Dimensions
Bed Width.............................................................................................................................................. 3-1/4 in.
Carriage Leadscrew Diameter.................................................................................................................. 5/8 in.
Leadscrew TPI......................................................................................................................................... 16 TPI
Carriage Leadscrew Length................................................................................................................ 19-3/4 in.
Steady Rest Capacity.................................................................................................................................. 2 in.
Other
Optional Stand......................................................................................................................................... D3640
Construction
Base..................................................................................................................................................... Cast Iron
Headstock............................................................................................................................................ Cast Iron
End Gears.......................................................................................... Machine-Cut Plastic (Polyoxymethylene)
Bed.......................................................................................................................... Precision-Ground Cast Iron
Body..................................................................................................................................................... Cast Iron
Paint Type/Finish...................................................................................................................................... Epoxy
Other Specifications:
Country of Origin ................................................................................................................................................ China
Warranty ........................................................................................................................................................... 1 Year
Approximate Assembly & Setup Time ........................................................................................................ 45 Minutes
Serial Number Location .................................................................................................................................. ID Label
Sound Rating ..................................................................................................................................................... 76 dB
ISO 9001 Factory .................................................................................................................................................. Yes
Certified by a Nationally Recognized Testing Laboratory (NRTL) .......................................................................... No
-8- Model G0765 (Mfd. Since 5/15)
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 discon-
nect 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.
OWNER’S MANUAL. Read and understand this
owner’s manual BEFORE using machine.
TRAINED OPERATORS ONLY. Untrained oper-
ators have a higher risk of being hurt or killed.
Only allow trained/supervised people to use this
machine. When machine is not being used, dis-
connect power, remove switch keys, or lock-out
machine to prevent unauthorized use—especially
around children. Make your 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 machin-
ery. Never operate under the influence of drugs or
alcohol, when tired, or when distracted.
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 impor-
tance 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 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.
Indicates a potentially hazardous situation which, if not avoided,
COULD result in death or serious injury.
Indicates an imminently hazardous situation which, if not avoided,
WILL result in death or serious injury.
This symbol is used to alert the user to useful information about
proper operation of the machine.
NOTICE
Safety Instructions for Machinery
SECTION 1: SAFETY
Model G0765 (Mfd. Since 5/15) -9-
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 mate-
rial. Always wear a NIOSH-approved respirator to
reduce your risk.
HEARING PROTECTION. Always wear hear-
ing 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 modifica-
tions—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.
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 dur-
ing 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 rec-
ommended accessories. Using improper acces-
sories 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 disconnect-
ing 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 intend-
ed operation, stop using the machine! Contact our
Technical Support at (570) 546-9663.
-10- Model G0765 (Mfd. Since 5/15)
Additional Safety for Metal Lathes
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.
ROTATING PARTS. Always keep hands and body
at a safe distance from rotating parts—especially
those with projecting surfaces. Never hold any-
thing against rotating workpiece, such as emery
cloth, that can pull you into lathe.
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 hand-
rotating 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 work-
pieces. 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.
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.
CLEARING CHIPS. Metal chips can be razor
sharp. Avoid clearing them by hand or with a rag.
Use a brush or vacuum instead.
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 work-
piece. Resulting metal fragments can strike nearby
people and lathe will be seriously damaged. To
reduce risk of crashing, ALWAYS release automat-
ic 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 dis-
lodged 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 entan-
glement, 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.
Serious injury or death can occur from getting entangled in, crushed between, or struck by
rotating parts on a lathe! Unsecured tools or workpieces attached to rotating objects can also
strike nearby operators with deadly force. To minimize the risk of getting hurt or killed, anyone
operating this machine MUST completely heed the hazards and warnings below.
Model G0765 (Mfd. Since 5/15) -11-
Additional Chuck Safety
ENTANGLEMENT. Entanglement with a rotat-
ing 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 workpiec-
es 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 hazard-
ous to be completed with the lathe or existing
equipment, the operator must have enough experi-
ence 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 bystand-
ers with deadly force. To reduce the risk of this haz-
ard, read and understand this document and seek
additional training from an experienced chuck user
before using a chuck.
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 pos-
sible. 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.
-12- Model G0765 (Mfd. Since 5/15)
SECTION 2: POWER SUPPLY
Availability
Before installing the machine, consider the avail-
ability 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, shock,
or equipment damage
may occur if machine is
not properly grounded
and connected to 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 over-
loading the machine during operation and make
sure it is connected to a power supply circuit that
meets the specified circuit requirements.
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, con-
sult an electrician or qualified service personnel to
ensure circuit is properly sized for safe operation.
A power supply circuit includes all electrical
equipment between the breaker box or fuse panel
in the building and the machine. The power sup-
ply 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.)
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
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.
Model G0765 (Mfd. Since 5/15) -13-
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 nec-
essary, do not connect the equipment-grounding
wire to a live (current carrying) terminal.
Check with a qualified electrician or service per-
sonnel 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, discon-
nect 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.
Grounding & Plug Requirements
Figure 7. Typical 5-15 plug and receptacle.
Grounding Prong
Neutral Hot
5-15 PLUG
GROUNDED
5-15 RECEPTACLE
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.
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!
-14- Model G0765 (Mfd. Since 5/15)
SECTION 3: SETUP
The list below outlines the basic process of pre-
paring your machine for operation. Specific steps
are covered later in this section.
The typical preparation process is as follows:
1. Unpack lathe and inventory contents of box/
crate.
2. Clean lathe and its components.
3. Identify an acceptable location for lathe and
move it to that location.
4. Assemble loose components and make any
necessary adjustments or inspections to
ensure lathe is ready for operation.
5. Connect lathe to power source.
6. Test run lathe to ensure it functions properly.
7. Perform spindle break-in procedure to pre-
pare lathe for operation.
Preparation
SUFFOCATION HAZARD!
Keep children and pets away
from plastic bags or packing
materials shipped with this
machine. Discard immediately.
The following are needed to complete the setup
process, but are not included with your machine.
Description Qty
• Additional People ....................................... 1
• Safety Glasses ............... 1 For Each Person
• Cleaner/Degreaser (Page 18) .... As Needed
• Quality Metal Protectant ............. As Needed
• Disposable Shop Rags ............... As Needed
Needed for Setup
This machine was carefully packaged for safe
transport. When unpacking, separate all enclosed
items from packaging materials and inspect them
for shipping damage.
If items are damaged
,
please
call us immediately at (570) 546-9663.
IMPORTANT:
Save all packaging materials until
you are completely satisfied with the machine and
have resolved any issues between Grizzly or the
shipping agent. You MUST have the original pack-
aging to file a freight claim. It is also extremely
helpful if you need to return your machine later.
Unpacking
Model G0765 (Mfd. Since 5/15) -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 8) Qty.
A. 3" Three-Jaw Chuck w/Internal Jaw Set .... 1
B. Steady Rest ................................................ 1
C. 4-Way Tool Post ......................................... 1
D. Compound Rest ......................................... 1
E. Tailstock ...................................................... 1
F. Chip Tray .................................................... 1
G. Feet (not shown) ......................................... 4
Packaged Components (Figures 9–11) Qty.
H. Hex Wrench Set (2.5, 3, 4, 5, 6mm) ......1 Ea
I. Wrench Set (6/7, 8/10, 13/16mm) ..........1 Ea
J. Bottle for Oil ............................................... 1
K. 3-Jaw Chuck External Jaw Set .................. 1
L. Dead Center MT#3 ..................................... 1
M. Dead Center MT#2 .................................... 1
N. Fuse ............................................................ 1
O. Cross Slide Handwheel Handle ................. 1
P. Carriage Handwheel Handle ...................... 1
Q. 3-Jaw Chuck Key ....................................... 1
R. Change Gear Set ....................................... 1
— Change Gear (20-tooth, Installed) ......... 1
— Change Gear (30-tooth) ......................... 1
— Change Gear (35-tooth) ......................... 1
— Change Gear (40-tooth) ......................... 2
— Change Gear (45-tooth) ......................... 1
— Change Gear (50-tooth) ......................... 1
— Change Gear (55-tooth) ......................... 1
Figure 8. Installed components.
D
ABCE
F
— Change Gear (57-tooth) ................................ 1
— Change Gear (60-tooth) ......................... 1
— Change Gear (65-tooth) ......................... 1
— Change Gear (80-tooth, Installed) ......... 2
S. 5" Faceplate ................................................ 1
Figure 10. Change gears.
R
Figure 11. Faceplate.
S
NOTICE
If you cannot find an item on this list, care-
fully check around/inside the machine and
packaging materials. Often, these items get
lost in packaging materials while unpack-
ing or they are pre-installed at the factory.
Figure 9. Packaged components.
IJ
K
L
M
N
O
P
Q
H
-16- Model G0765 (Mfd. Since 5/15)
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 preven-
tative, but the following steps work well in a wide
variety of situations. Always follow the manufac-
turer’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)
Basic steps for removing rust preventative:
1.
Put on safety glasses.
2.
Coat the rust preventative with a liberal
amount of cleaner/degreaser, then let it soak
for 5–10 minutes.
3.
Wipe off the surfaces. If your cleaner/degreas-
er 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.
4.
Repeat Steps 2–3 as necessary until clean,
then coat all unpainted surfaces with a quality
metal protectant to prevent rust.
Gasoline and petroleum
products have low flash
points and can explode
or cause fire if used to
clean machinery. Avoid
using these products
to clean machinery.
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.
Cleanup
T23692—Orange Power Degreaser
A great product for removing the waxy shipping
grease from your machine during clean up.
Figure 12. T23692 Orange Power Degreaser.
Model G0765 (Mfd. Since 5/15) -17-
Site Considerations
Figure 13. Minimum working clearances.
Lathe
= Electrical Connection Illustration Not To Scale
Keep
Workpiece
Loading Area
Unobstructed
301/2"
121/2"
Weight Load
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 work-
piece that will be used. Additionally, consider the
weight of the operator and any dynamic loading
that may occur when operating the machine.
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 main-
tenance and service described in this manual.
See below for required space allocation.
Physical Environment
The physical environment where the machine is
operated is important for safe operation and lon-
gevity of machine components. For best results,
operate this machine in a dry environment that is
free from excessive moisture, hazardous chemi-
cals, 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.
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
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.
Children or untrained people
may be seriously injured by
this machine. Only install in an
access restricted location.
-18- Model G0765 (Mfd. Since 5/15)
With the help of another person, lift the machine
to a suitable location.
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 another
person.
Power Connection
Before the machine can be connected to the
power source, all previous setup instructions in
this manual must be completed to ensure that
the machine has been assembled and installed
properly.
Connecting Power
Always make sure the spindle dial on the head-
stock is turned to "0" (rotated fully counterclock-
wise) before connecting power.
Insert the power cord plug into a matching power
supply receptacle.
Disconnecting Power
If you need to disconnect the machine from power
for maintenance, service, or adjustments, turn the
machine OFF and pull the plug completely out of
the receptacle.
With the exception of the handwheel handles, the
lathe is shipped fully assembled.
Thread the handles into the cross slide handwheel
and carriage handwheel, (see Figure 14).
Assembly
Figure 14. Handwheel handles installed.
Cross Slide
Handwheel
Carriage
Handle
Model G0765 (Mfd. Since 5/15) -19-
Test Run
Once assembly is complete, test run the machine
to ensure it is properly connected to power and
safety components are functioning correctly.
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.
DO NOT start machine until all preceding
setup instructions have been performed.
Operating an improperly set up machine
may result in malfunction or unexpect-
ed results that can lead to serious injury,
death, or machine/property damage.
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.
To test run machine:
1. Set spindle direction switch to neutral ("0"
position), and turn variable speed dial all the
way counterclockwise to "0".
High/Low
Range Lever
Feed Direction Lever
DOWN (CCW Rotation)
UP (Clockwise Rotation)
CENTER (Neutral)
HIGH LOW
Figure 16. Lever settings.
2. Shift high/low range lever on back of lathe to
LOW, and feed direction lever to neutral (see
Figure 16).
Figure 15. Headstock controls.
Spindle Direction
Switch Set to "0"
3. Make sure chuck and jaws, if installed, are
secure (see Chuck Installation on Page 26).
Note: If a chuck is not installed on the lathe,
you do not need to install one for this test run.
Emergency
Stop Button
Feed
Direction
Lever
High/Low
Range Lever
Variable Speed Dial
Set to "0"
-20- Model G0765 (Mfd. Since 5/15)
5. Press tab in on side of Emergency Stop
button, lift switch cover, and press green
ON button to reset Emergency Stop button.
The spindle speed display and power button
should illuminate to indicate that lathe is con-
nected to power supply.
4. Disengage half nut with lever shown in
Figure 17.
Figure 17. Half nut lever disengaged.
Engaged
Halfnut
Lever
Disengaged
6. Verify lathe is operating correctly by turn-
ing spindle direction switch to "F" position.
Slowly turn variable speed dial clockwise
until spindle speed display shows 100 RPM.
The spindle should rotate counterclockwise—
down and toward the front of the lathe.
7. Push Emergency Stop button to turn lathe
OFF. Then, without resetting Emergency
Stop button, try to restart spindle rotation by
turning variable speed dial all the way coun-
terclockwise to "0" and then clockwise. The
spindle should not start.
—If spindle does start with Emergency Stop
button pressed in, the button is not oper-
ating correctly. This safety feature must
operate properly before continuing opera-
tion. Turn variable speed dial counterclock-
wise to "0" to stop lathe, disconnect it from
power, and call Tech Support for help.
Congratulations! The test run is complete. Turn
lathe OFF and perform the following Spindle
Break-In procedure.
Half Nut
Lever
Thread Dial
Model G0765 (Mfd. Since 5/15) -21-
To perform the spindle break-in:
1. Successfully complete the Test Run proce-
dure beginning on Page 21.
2. Set spindle direction switch to "F" (forward),
ensure range lever is in LOW, and operate
lathe for 10 minutes at 100 RPM.
3. Operate lathe at 1000 RPM for 10 minutes,
then turn variable speed dial to "0" to stop
spindle.
4. Shift range control lever to HIGH, then oper-
ate lathe at 2000 RPM for 10 minutes, then
stop spindle.
5. Run lathe in reverse at 2000 RPM for 10 min-
utes, then turn speed dial to "0", turn spindle
direction switch to "0", and press Emergency
Stop button.
Congratulations! Spindle break-in is complete.
Spindle Break-In
Before subjecting the spindle to operational loads,
it is essential to complete the break-in process.
This helps maximize the life of spindle bearings
and other precision components by thoroughly
lubricating them before placing them under load.
After spindle break-in is complete, we recommend
changing headstock and gearbox oil to remove
any metal particles or debris that are present from
the assembly and break-in process.
The break-in must be performed in succession
with the Test Run procedure described in this
manual, as the steps in that procedure prepare
the lathe controls for the break-in process.
DO NOT perform this procedure indepen-
dently of the Test Run section. The lathe
could be seriously damaged if the controls
are set differently than instructed in that
section.
Test Run procedure described in this
Before subjecting the spindle to operational loads,
it is essential to complete the break-in process.
This helps maximize the life of spindle bearings
and other precision components by thoroughly
lubricating them before placing them under load.
After spindle break-in is complete, we recommend
changing headstock and gearbox oil to remove
any metal particles or debris that are present from
the assembly and break-in process.
The break-in must be performed in succession
with the Test Run procedure described in this
manual, as the steps in that procedure prepare
the lathe controls for the break-in process.
DO NOT perform this procedure indepen-
dently of the Test Run section. The lathe
could be seriously damaged if the controls
are set differently than instructed in that
section.
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:
• Tailstock alignment (Page 32).
• Cross slide backlash adjustment (Page 56).
• Gib adjustments (Page 57).
Recommended
Adjustments
-22- Model G0765 (Mfd. Since 5/15)
SECTION 4: OPERATIONS
Operation Overview To complete a typical operation, the operator
does the following:
1. Puts on safety glasses, rolls up sleeves,
removes jewelry, and secures any clothing or
hair that could get entangled in moving parts.
2. Examines workpiece to make sure it is suit-
able for turning, then securely mounts it in
lathe.
3. Installs tooling, aligns it with workpiece, then
backs it away to establish a safe startup
clearance.
4. Removes all setup tools from lathe.
5. Checks for safe clearances by rotating
workpiece by hand at least one full revolution.
6. Moves slides to where they will be used dur-
ing operation.
7. If using power feed, selects appropriate feed
rate and direction.
8. Resets Emergency Stop button and turns
spindle direction switch to "F".
9. Rotates variable speed dial to set correct
spindle speed.
10. Uses carriage handwheels or power feed
options to move the tooling into workpiece for
operations.
11. When finished turning, rotates variable speed
dial to "0" to stop spindle, presses Emergency
Stop button, then removes workpiece.
The purpose of this overview is to provide the nov-
ice 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,
seek additional
training from experienced
machine operators
, and do additional research
outside of this manual by reading "how-to" books,
trade magazines, or websites.
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 proj-
ects. Regardless of the content in this sec-
tion, Grizzly Industrial will not be held liable
for accidents caused by lack of training.
To reduce your risk of
serious injury, read this
entire manual BEFORE
using machine.
To reduce the risk of
eye injury from flying
chips always wear safety
glasses.
Model G0765 (Mfd. Since 5/15) -23-
Chuck & Faceplate
Mounting
This lathe ships with the 3-jaw chuck installed.
This is a scroll-type chuck where all three jaws
move in unison when the chuck key is used.
The included 4-jaw chuck features independent
jaws, which are used for square or unevenly-
shaped stock, and to mount work that needs to be
adjusted to near-zero total indicated runout.
The included faceplate has slots for T-bolts that
hold standard or custom clamping hardware. With
the correct clamping hardware, a faceplate offers
a wide range of uses, including machining non-
concentric workpieces, straight turning between
centers, off-center turning, and boring.
This lathe ships with the 3-jaw chuck installed.
This is a scroll-type chuck where all three jaws
move in unison when the chuck key is used.
The included 4-jaw chuck features independent
jaws, which are used for square or unevenly-
shaped stock, and to mount work that needs to be
adjusted to near-zero total indicated runout.
The included faceplate has slots for T-bolts that
hold standard or custom clamping hardware. With
the correct clamping hardware, a faceplate offers
a wide range of uses, including machining non-
concentric workpieces, straight turning between
centers, off-center turning, and boring.
Never use spindle speeds faster than chuck
RPM rating or safe limits of your workpiece.
Excessive spindle speeds greatly increase
risk of workpiece or chuck being thrown
from machine with deadly force!
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.
Installation &
Removal Device
Figure 18. Example of common device used
during chuck installation and removal.
Plywood Protection
Plate for Chucks
Installed by Hand
Place a piece of plywood over the bedways to pro-
tect them from damage if a chuck or other tooling
is dropped (see below).
-24- Model G0765 (Mfd. Since 5/15)
Chuck Installation 4. Insert chuck screws through mounting holes
in spindle backplate, as shown in Figure 20.
Make sure chuck seats firmly and evenly
against backplate shoulder.
5. Use a lock washer and hex nut on each
chuck screw to secure chuck (see Figure
21). Tighten hex nuts evenly a small amount
at a time in multiple steps.
Figure 20. Inserting chuck into backplate.
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 19
below).
To install the chuck:
1. DISCONNECT LATHE FROM POWER!
2. Use an appropriate device to protect ways dur-
ing installation process (refer to Installation
& Removal Device on Page 25).
3. Thoroughly clean and wipe-down all mating
surfaces with a lightly-oiled, lint-free rag.
Tools Needed: Qty
Open-End Wrench 10mm .................................. 1
Figure 19. Spindle backplate.
Inside
Taper
Mounting
Hole
Backplate
Shoulder
Figure 21. Chuck secured against backplate.
Hex Nut
Lock Washer
Intrinsic
Backplate
Chuck Screw
Model G0765 (Mfd. Since 5/15) -25-
This 3-jaw, scroll-type chuck has an internal scroll-
gear
that moves all jaws in unison when a
djusted
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.
Never mix jaw types or
positions to
accommodate an odd-shaped workpiece.
T
he
chuck will spin out of balance an
d
may throw the
workpiece
!
Instead, use an independent jaw chuck
or a faceplate.
Insufficient
Jaw Clamping Unstable
Workpiece
Bar Stock
Cylinder
Unsafe Jaw Position
Poor Scroll
Gear Engagement
Safer Inside
Jaw Use
Unsafe Inside
Jaw Use
Unsafe Jaw
Position
Safer Outside
Jaw Use
Poor Scroll Gear Engagement
Unsafe Jaw Position and
Poor Scroll
Gear
Engagement
Poor Grip
Unstable
Workpiece
Shallow
Bar Stock
Shallow
Bar Stock
Safer Outside
Jaw Use
Safer Inside
Jaw Use
CORRECT
CORRECT
CORRECT
CORRECT
INCORRECT
INCORRECT
INCORRECT
INCORRECT
Scroll Chuck
Clamping
Figure 22. Jaw selection and workpiece holding.
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 installa-
tion will result in jaws that do not converge evenly
and are unable to securely clamp a workpiece.
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 coun-
terclockwise in numerical order in the jaw guides,
so they will hold a concentric workpiece evenly.
Figure 23. Chuck and jaw selection.
Inside SetOutside Set
Figure 24. Jaw guide and jaw numbers.
Jaw Guides
1
2
3
Jaw Numbers
-26- Model G0765 (Mfd. Since 5/15)
To change jaw set:
1.
DISCONNECT MACHINE FROM POWER!
2.
Use appropriate device to protect ways
(refer
to Installation & Removal Device
subsec-
tion).
3.
Insert chuck key and turn it counterclockwise
to back jaws out and remove them individu-
ally in descending order (i.e., 3, 2, 1).
4.
Use mineral spirits to clean debris and grime
from jaws and chuck jaw guides.
5.
Apply thin coat of NLGI #2 grease to surfaces
of removed jaw set. Store i
n safe place free
from moisture and abrasives.
6.
Rotate chuck key clockwise until you see tip
of outer scroll-gear lead thread about to enter
a jaw guide (see below).
Lead Thread
1
Figure 25. Lead thread on scroll gear.
7. Insert jaw #1 into jaw guide and hold jaw
against scroll-gear.
8
. 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.
9
. Install remaining jaws in numerical order, in
same manner. The jaws should converge
evenly at center of chuck.
— If jaws do not converge evenly, remove
them. Re-install jaws sequentially 1–3,
and
make sure each one engages with scroll-
gear lead thread during its first rotation.
Model G0765 (Mfd. Since 5/15) -27-
Figure 26. Example of a workpiece clamped in a
faceplate.
Faceplate
Non-Cylindrical
Workpiece
Clamp
To mount a non-concentric workpiece to a
faceplate:
1.
DISCONNECT MACHINE FROM POWER!
2.
Position appropriate device
across bed ways
to protect them from any potential damage
from workpiece contact during installation.
3.
With help from another person or holding
device to support workpiece, position it onto
faceplate and clamp it in place with a mini-
mum 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 work-
piece when clamping it to faceplate. If neces-
sary, use counter-weights to balance assem-
bly and use a dial indicator to make sure
workpiece is properly positioned for your
operation.
Faceplate
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.
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.
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.
-28- Model G0765 (Mfd. Since 5/15)
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 station-
ary 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 perpen-
dicular 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.
Graduated Dial on Handwheel
Increments ................................................. 0.001"
One Full Revolution ...................................0.200"
Increments on Quill Scale
Inch ................................ 0"–2" in 1⁄8" Increments
Metric .................... 0–50mm in 1mm Increments
Tailstock Quill Specs
Positioning Tailstock
1. Rotate tailstock lock lever clockwise (facing
machine) to unlock tailstock from bedways.
2.
Slide tailstock to desired position by pushing
it along the bedways.
3.
Rotate tailstock lock lever counterclockwise
to lock tailstock against bedways.
Using Quill
1. Loosen quill lock lever.
2. Turn quill handwheel clockwise to move quill
toward spindle or counterclockwise to move it
away from it.
3. Tighten quill lock lever.
Figure 27. Tailstock controls and features.
Offset Adjustment
Screw (1 of 2)
Quill
Quill Lock
Lever
Quill
Handwheel
Tailstock Lock
Lever
Model G0765 (Mfd. Since 5/15) -29-
To install tooling in tailstock:
1.
With tailstock locked in place, unlock quill,
then use handwheel to extend it approxi-
mately 1".
2.
Thoroughly clean and dry tapered mating
surfaces of quill and center, making sure no
lint or oil remains on tapers.
3.
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.
4.
Unlock tailstock and move it until tip of tool
is close to, but not touching, workpiece, then
lock tailstock.
5.
Start spindle rotation, unlock quill lock lever,
then turn quill handwheel clockwise to feed
tool into workpiece.
Installing Tooling
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.
Offsetting Tailstock
The tailstock quill can be offset from the spindle
centerline for turning tapers. Offsetting the quill
toward the front of the lathe results in a taper at
the tailstock end. Conversely, offsetting the quill
toward the back of the lathe results in a taper at
the spindle end.
Removing Tooling
1. Use shop rag to hold tool.
2.
Rotate quill handwheel counterclockwise to
fully retract quill into tailstock until tool is
forced out of quill.
Figure 29. Example photos of inserting tools into
the tailstock.
Tang
Figure 28. Types of tapered arbors and tooling.
Screw
End
Solid
End
Open
End
Solid
End
Tang
The tailstock quill accepts MT#2 tapered arbors
(see the Figures below for examples).
-30- Model G0765 (Mfd. Since 5/15)
Turn
CCW
Turn
CCW
Turn
CW
Turn
CW
Figure 31. Example of set screw adjustment in
relation to tailstock movement.
3. Tighten tailstock lock to secure the offset.
To offset the tailstock:
1. Loosen tailstock lock to release clamping
pressure on top and bottom castings.
2. Rotate adjustment set screws in opposite
directions for desired offset (see Figure
below).
Tools Needed Qty
Hex Wrench 4mm .............................................. 1
Note: The marks on the offset indicator are arbi-
trary. For a precise offset, use a dial indicator to
check quill movement while adjusting the screws.
Aligning Tailstock to Spindle
Centerline
Figure 32. Turning a dead center.
This is an essential adjustment that should be ver-
ified 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 the tailstock to the spindle centerline:
1. Center drill both ends of one piece of round
stock, then set it aside for use in Step 5.
2. Use the other piece of round stock to make
a dead center, and turn it to a 60° point, as
illustrated in the Figure below.
Figure 30. Left offset adjustment.
Adjustment
Set Screw (1 of 2)
Offset
Indicator
Model G0765 (Mfd. Since 5/15) -31-
Move tailstock toward
front of lathe 1/2 the
amount of taper.
Looking down from above.
Figure 34. Adjust tailstock toward the operator.
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.
3. Install center in tailstock.
4. Attach lathe dog to test stock from Step 1,
then mount it between centers, as shown in
Figure below.
— 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 35. Adjust tailstock away from the
operator.
8. Repeat Steps 5–7 until desired accuracy is
achieved.
Figure 33. Example of stock mounted between
the centers.
5. Turn 0.010" off stock diameter.
6. Mount test or dial indicator so plunger is on
tailstock quill.
7. Use calipers to measure both ends of
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
in the Figure below.
-32- Model G0765 (Mfd. Since 5/15)
Figure 36 shows the MT#2 and MT#3 dead cen-
ters included with the lathe.
Centers
Figure 36. Dead centers.
MT#2 Dead
Center
MT#3 Dead
Center
Figure 37. Example of using dead center with a
faceplate and lathe dog.
Dead Center
Lathe
Dog
Mounting Dead Center in Spindle
1. DISCONNECT LATHE FROM POWER!
2. Thoroughly clean and dry all mating surfaces
of spindle bore and center, making sure that
no lint or oil remains on these surfaces.
3. Mount chuck or faceplate onto spindle, which-
ever is correct for your operation.
4. 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 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 36)
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 36) in
the spindle for operations where the workpiece
rotates with the center and does not generate
friction. Removing Center from Spindle
To remove center from the spindle, insert a piece
of round bar stock (or similar tool) through outside
end of spindle. Hold onto center with gloved hand
or shop rag, then tap bar stock to knock center
loose.
Model G0765 (Mfd. Since 5/15) -33-
To mount a center in tailstock:
1.
DISCONNECT MACHINE FROM POWER!
2.
Thoroughly clean and dry tapered mating
surfaces of tailstock quill bore and center,
making sure no lint or oil remains on tapers.
Mounting Center in Tailstock
The included MT#2 dead center or a live center
(not included) can be used in tailstock. Mounting
instructions are the same for both. Figure below
shows an example photo of a dead center mount-
ed in a tailstock.
Figure 38. Example of using dead center
installed in the tailstock.
Dead Center
3. Use quill handwheel to feed quill out from
casting approximately 1".
Note: The maximum quill travel is 2", but we
do not recommend extending quill more than
1" or stability and accuracy will be reduced.
4. Insert center into tailstock quill.
5.
Seat center firmly into quill during workpiece
installation by rotating quill handwheel clock-
wise 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 cen-
ter against workpiece, or it may become
difficult to remove later, and it will result in
excessive friction and heat, which may dam-
age workpiece and center.
Removing Center from 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.
If the center does not come loose by retracting the
quill, extend the quill to expose the slot shown in
the Figure below, then use a drift key to remove
the center.
Mounting Workpiece Between
Centers
1. DISCONNECT LATHE FROM POWER!
2. Drill center holes in both ends of the workpiece.
3. 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.
4. Lubricate MT#2 dead center point and
workpiece center holes, then mount workpiece
between centers and hold it in place with light
pressure from tailstock center.
To avoid premature wear of dead center
or damage to workpiece, use low spindle
speeds and keep tip of dead center mounted
in tailstock well lubricated.
handwheel clockwise to apply pressure
Figure 39. 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.
-34- Model G0765 (Mfd. Since 5/15)
Steady Rest
Tools Needed for Installation/Removal Qty
Open-End Wrench 14mm .................................. 1
Open-End Wrench 16mm .................................. 1
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.
To install and use the steady rest:
1. DISCONNECT LATHE FROM POWER!
2. Thoroughly clean all mating surfaces, then
place steady rest base on bedways.
3. Loosen finger lock nuts (see Figure 40), turn
finger adjustment knobs, and adjust fingers
as required for workpiece.
4. Loosen steady rest lock nut, position steady
rest where required to properly support
workpiece, then secure lock nut.
5. Turn finger adjustment knobs so fingers
barely touch workpiece, then tighten finger
lock nuts.
6. Lubricate finger tips with an anti-seize lubri-
cant during operation.
Note: Mill or file tips if they show wear.
Figure 40. Steady rest components.
Lock
Nut
Finger
Lock Nut
Finger
Finger
Adjustment
Knob
Model G0765 (Mfd. Since 5/15) -35-
The compound rest handwheel has an indirect-
read graduated scale. This means that the dis-
tance 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.
Graduated Dial
Increments ............................... 0.001" (0.025mm)
One Full Revolution ..................... 0.04" (1.02mm)
Tool Needed Qty
Hex Wrench 5mm .............................................. 1
To set compound rest angle:
1. Loosen cap screws shown in Figure 41.
Compound Rest
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 com-
pound rest to that exact angle the next time
you need to cut threads.
Figure 41. Compound rest angle adjustments.
Cap Screws
Angle Scale
Four-Way Tool Post
Tool Needed Qty
Hex Wrench 5mm .............................................. 1
Installing Tool
Figure 42. Example of tool mounted in tool post.
Cutting
Tool
Tool Post
Screw
The four-way tool post is mounted on top of the
compound rest
and allows a maximum of four
tools
to be loaded simultaneously.
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.
To install a tool in the tool post:
1
. Adjust tool post screws
so cutting tool can fit
underneath them (see Figure below).
2. Firmly secure cutting tool with at least two
tool post screws.
3.
Check and adjust cutting tool to spindle cen-
terline, as instructed in next subsection.
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").
-36- Model G0765 (Mfd. Since 5/15)
Aligning Cutting Tool with Spindle
Centerline
For most operations, the cutting tool tip should be
aligned with the
spindle
centerline, as illustrated
below.
There are a number of ways to check and align
the cutting tool to the spindle centerline. If nec-
essary, 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 pro-
cedure. For this to work, the tailstock must
be aligned to the spindle centerline (refer to
Aligning Tailstock To Spindle Centerline
for detailed instructions).
Cutting
Tool
Spindle
Center
Line
Figure 43. Cutting tool aligned with spindle
centerline (viewed from tailstock).
Tools Needed Qty
Hex Wrench 6mm .............................................. 1
Steel Shims ....................................... As Needed
Cutting Tool ....................................................... 1
Tailstock Center ................................................. 1
To align cutting tool with tailstock center:
1.
Mount cutting tool in tool post, then secure
post so tool faces tailstock.
2.
Install center in tailstock, and position center
tip near cutting tool tip.
3.
Lock tailstock and quill in place.
4.
Adjust height of cutting tool so tool tip is
aligned vertically with center tip, as illustrated
below.
Cutting
Tool Tailstock
Center
(Side View)
Figure 44. Cutting tool aligned to the tailstock
center.
Cutting
Tool
Tailstock
Center
(Top View)
Model G0765 (Mfd. Since 5/15) -37-
The cutting tool can be manually fed into the
workpiece using the carriage, cross slide, and
compound rest handwheels shown below.
Carriage Handwheel
Graduated Dial
Increments ................................... 0.01" (0.25mm)
One Full Revolution ....................... 1.0" (25.4mm)
The carriage handwheel moves 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 ............................... 0.001" (0.025mm)
One Full Revolution ..................... 0.04" (1.02mm)
Use this handwheel to move the tool toward and
away from the work. The cross slide handwheel
has an indirect-read graduated dial. This means
the distance shown on the scale represents the
actual distance the tool moves.
Compound Rest Handwheel
Graduated Dial
Increments .............................. 0.001" (0.025mm)
One Full Revolution ..................... 0.04" (1.02mm)
Use this handwheel to move the cutting tool lin-
early along the set angle of the compound rest.
Set the compound rest angle by hand-rotating it
and securing in place with two cap screws. The
compound rest has an indirect-read graduated
dial.
Figure 45. Manual feeding controls.
Carriage
Handwheel
Manual Feed
Compound
Rest
Handwheel
Cross Slide
Handwheel
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.
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.
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, pro-
vide 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 deter-
mine the best spindle speed for the operation.
Cutting Speed (FPM) x 12
*Recommended
Dia. of Cut (in inches) x 3.14
Spindle
Speed
(RPM)
*Double if using carbide cutting tool
=
Figure 46. Spindle speed formula for lathes.
-38- Model G0765 (Mfd. Since 5/15)
Setting Spindle Speed Range
The high/low range lever shown in Figure 47,
is used to select one of the two spindle speed
ranges.
When the lever is moved to the right, as shown in
Figure 47, the low spindle speed range (100–1000
RPM) is selected. When the lever is moved to the
left, the high spindle speed range (100–2000)
RPM is selected.
Setting Spindle Direction & Speed
Set the spindle rotation direction to forward or
reverse with the spindle direction switch, shown
in Figure 48. Reset the Emergency Stop button,
press the ON button, then turn the variable speed
dial clockwise until the desired spindle speed dis-
plays on the spindle speed display.
Configuration Example
Follow this example to gain a better understand-
ing of how to set the spindle speed.
To set spindle speed to 100 RPM:
1. Make sure spindle is completely stopped,
and shift high/low range lever to LOW, as
shown in Figure 47.
Note: If high/low range lever does not eas-
ily adjust into position, rotate chuck by hand
while you apply pressure to lever. When
gears align, the lever will easily move into
place.
2. Turn variable speed dial to "0".
3. Turn spindle direction switch to "F", and
press ON button.
4. Adjust variable speed dial until spindle speed
display reads 100 RPM.
Figure 47. High/low range lever set to low.
Figure 48. Spindle speed and direction controls.
Spindle
Direction
Switch
Emergency Stop
Button
Spindle
Speed
Display
High/Low
Range Lever
Variable
Speed
Dial
Model G0765 (Mfd. Since 5/15) -39-
Power Feed
The carriage has power feed options for either
threading or non-threading operations. However,
this subsection only covers using the power feed
option for non-threading operations. To learn how
to power the carriage for threading operations,
refer to Threading on Page 46.
B. Feed Direction Lever: Selects carriage trav-
el direction. The carriage moves left when
feed direction lever is up, half nut lever is
engaged, and spindle switch is set to "F".
The carriage moves right when the feed
direction lever is all the way down. The car-
riage will not move when the lever is in the
center position.
Carriage travel direction reverses when the
spindle switch is set to "R".
To avoid damaging lathe, 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 recon-
figure the end gears, depending on how they are
set up. The lathe comes from the factory with the
end gears setup in the standard configuration
(refer to End Gears on Page 43). This end gear
configuration achieves a fixed feed rate of 0.04 in/
rev. Refer to End Gears on Page 43 for detailed
instructions on how to configure the end gears.
A. Spindle Switch: Starts, stops, and reverses
carriage travel when feed direction lever and
half nut lever are engaged.
Figure 49. Spindle switch.
A
Figure 50. Feed direction lever.
B
To avoid potential carriage/chuck crash,
disengage half-nut lever immediately after
completing power feeding operations.
C. Half Nut Lever: Engages/disengages half
nut for power feed operations.
Figure 51. Half nut lever.
C
-40- Model G0765 (Mfd. Since 5/15)
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 for 0.04 in./rev.:
1. DISCONNECT LATHE FROM POWER!
2. Gather two 80T and two 20T gears.
Note: All change gears are stamped with the
number of teeth they have except the 20T
gears, which are black.
3. Remove end cover.
4. Remove cap screws and flat washers that
secure existing gears.
5. Loosen hex nut shown in Figure 52, and
pivot adjuster down to disengage gears from
each other.
Setting Power Feed Rate 8. Reposition adjuster so gears mesh, tighten
adjuster hex nut, then secure gears with cap
screws and flat washers removed earlier.
9. Re-install end cover.
10. Push half nut lever down to engage power
feed (see Figure 53).
Figure 53. Half nut lever engaged.
Half Nut
Lever
The lathe is now set for a power feed rate of 0.04
in./rev.
Engaged
Halfnut
Lever
Disengaged
6. Remove existing A, B, C and D change gears
(see Figure 52). Note: Some gears may be
difficult to remove due to excess grease and
debris. Once they are removed, clean gears
with mineral spirits and wipe them down with
a clean rag.
7. Replace A and C gears with 20T gears, and
B and D gears with 80T gears (see Figure 55
on Page 43). The printed gear letters should
face outward.
Figure 52. Adjuster and change gears.
C
B
A
Adjustor
Hex
Nut
D
Model G0765 (Mfd. Since 5/15) - 41-
The end gears must be correctly setup for power
feed and threading. Use the photo below to
identify the A, B, C, and D change gears, which
are also referenced on the headstock feed rate
gear chart.
End Gears Primary Threading Configuration
This threading configuration is used for inch and
metric threading. Mesh the A, B, and D gears, as
shown in Figure 56. The C gear does not mesh
with any other gears in this configuration, so it is
not important which gear is installed in the C posi-
tion. The B and C gears share a keyed bushing.
Figure 56. Primary threading configuration.
A (20T)
B (80T)
D (80T)
C (20T)
A
B
C
D
B
A
C
D
B
Gear
A
Gear
Secondary Threading Configuration
This threading configuration is used for a different
range of threads and feed rates than the primary
threading configuration. Mesh the A and B gears,
and mesh the C and D gears, as shown in Figure
57. The B and C gears share a keyed bushing.
Figure 57. Secondary threading configuration.
A (20T)
B (80T)
D (80T)
C (20T)
A
B
C
D
B
A
C
D
C
Gear
B
Gear
A
Gear
C
Gear
D
Gear
D
Gear
Power Feed Configuration
The end gears are preset by the factory in this
configuration, which is only used for power feed-
ing. Mesh the top 20T A gear with the 80T B gear,
and mesh the 20T C gear with the 80T D gear
(see Figure 55).
The following subsections explain how to config-
ure the end gears, which are accessed by remov-
ing the end cover.
Figure 55. Power feed end gear configuration.
A (20T)
B (80T)
D (80T)
C (20T)
A
B
C
D
B
A
C
D
D Gear
(80T)
A Gear
(20T)
B Gear
(80T)
C
B
Figure 54. Change gear identification.
A
D
C Gear
(20T)
-42- Model G0765 (Mfd. Since 5/15)
End Gear Configuration Example
Follow the example below to better understand
how to configure the end gears for inch threading.
Tools Needed Qty
Hex Wrench 4 & 5mm ..................................1 Ea
Open-End Wrenches 13 & 14mm .................1 Ea
To configure end gears for threading 20 TPI:
1. DISCONNECT LATHE FROM POWER!
2. Locate 20 TPI on gear chart shown in Figure
58.
4. Remove end cover.
5. Loosen adjuster hex nut shown in Figure 60,
pivot adjuster down, and disengage gears.
3. Gather 40T, 65T, and 50T gears per change
gear chart. The C gear, which is indicated by
a "/", is installed on existing B/C change gear
keyed bushing (see Figure 59).
Figure 58. Locating change gears for 20 TPI.
TPI Scale TPI Scale
Thread Dial Chart
12
13
14
16
18
19
20
22
24
1,3,5,7
1
1,5
1 – 8
1,5
1
1,3,5,7
1,5
1 – 8
26
28
32
36
38
40
44
48
52
1,5
1,3,5,7
1 – 8
1,3,5,7
1,5
1 – 8
1,3,5,7
1 – 8
1,3,5,7
TPI Gear Setup TPI Gear Setup
12
13
14
16
18
19
20
22
24
ABCD ABCD
40 30 26 40 60 65
40 30
35
40
45
57
50
55
60 60
40
40
40
40
40
40
40
50
65 65
65 65
65 65
65
65
65 65
65 65
65
65
60
60 28
32
36
38
40
44
48
52
20
20
20
20
20
20
20
20
50 60
35
40
45
57
50
55
60
65 C
Gear
40T
Gear 65T
Gear 50T
Gear
20 TPI
Figure 59. B/C change gear and keyed bushing
(gears removed for clarity).
C Gear
B Gear
Keyed Bushing
Front Back
Note: Depending upon configuration, C gear
may not be 20T, as shown in Figure 59.
6. Loosen hex nut behind B/C change gear
shaft shown in Figure 61, then slide B/C gear
away from D gear.
Figure 60. Adjuster hex nut location.
Adjuster
Hex Nut
A Gear
B Gear
C Gear D Gear
7. Remove cap screws and washers that secure
gears, then remove gears.
Note: If any gears are difficult to remove, use
a large flat head screwdriver to gently wiggle
them off.
Leave existing C gear on keyed bushing. The
C gear will not mesh with any of the other
gears in this 20 TPI threading setup.
Figure 61. B/C change gear hex nut.
Hex Nut
D Gear
B/C Gear
Cap Screws
& Washers
Model G0765 (Mfd. Since 5/15) -43-
Adjuster
Hex Nut
C (20 or 60T)
B (65T)
A (40T)
D (50T)
Figure 63. End gear placement.
8. Remove key and bushing from D gear shaft
(see Figure 62).
12. Slide bushing removed in Step 8 onto 50T
gear.
13. Position adjuster so gears mesh. Then tight-
en adjuster hex nut and B/C gear shaft hex
nut.
14. Secure gears with cap screws and washers
removed earlier.
15. Re-install end cover.
9. Remove existing B gear from keyed bushing
shared with C gear.
10. Slide 65T B gear onto keyed bushing and
firmly against C gear.
Figure 62. D gear shaft key and bushing.
Key
Bushing
11. Slide 40T, 65T, and 50T gears onto gear
shafts (see Figure 63), making sure to re-
install key with 50T gear.
-44- Model G0765 (Mfd. Since 5/15)
The following subsections describe how to use
the threading controls and charts to set up the
lathe for a threading operation. If you are unfamil-
iar 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.
Headstock Threading Controls
The threading chart on the headstock face dis-
plays the settings for inch threading; a metric
thread chart is provided on Page 70.
Using the controls on the lathe, follow the exam-
ple below to understand how to set up the lathe
for a threading operation.
To set the lathe to thread 20 TPI:
1. Configure gears as instructed in End Gear
Configuration Example on Page 44.
2. Move high/low range lever to low, and move
feed direction lever all the way up, as shown
in Figure 64.
The lathe is now set up to cut 20 TPI threads.
Threading
High/Low
Range Lever
Feed Direction Lever
HIGH LOW
DOWN (CCW Rotation)
UP (Clockwise Rotation)
CENTER (Neutral)
Figure 64. Lever and dial settings for 20TPI.
High/Low
Range Lever
Feed
Direction
Lever
Model G0765 (Mfd. Since 5/15) -45-
Thread Dial
The numbers on the thread dial (Figure 65) are
used with the thread dial chart to show when to
engage the half nut during inch threading.
Note: The thread dial is not used for metric
threading. You must leave the half nut engaged
from the beginning until the turning is complete for
this type of operation.
When threading, we recommend using the
slowest speed possible and avoiding deep
cuts, so you are able to disengage the half
nut when required to prevent a carriage
crash!
When the first cutting pass is complete, the opera-
tor 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.
Apron Threading Controls
The half nut lever engages the carriage with the
leadscrew, which moves the carriage and cutting
tool along the length of the workpiece for thread-
ing operations (see Figure 65).
Figure 65. Apron threading controls.
Engaged
Halfnut
Lever
Disengaged
Half Nut
Lever
Thread Dial
Thread Dial Chart
The thread dial chart is located on the headstock,
as shown in Figure 66.
TPI Scale TPI Scale
Thread Dial Chart
12
13
14
16
18
19
20
22
24
1,3,5,7
1
1,5
1 – 8
1,5
1
1,3,5,7
1,5
1 – 8
26
28
32
36
38
40
44
48
52
1,5
1,3,5,7
1 – 8
1,3,5,7
1,5
1 – 8
1,3,5,7
1 – 8
1,3,5,7
TPI Gear Setup TPI Gear Setup
12
13
14
16
18
19
20
22
24
ABCD ABCD
40 30 26 40 60 65
40 30
35
40
45
57
50
55
60 60
40
40
40
40
40
40
40
50
65 65
65 65
65 65
65
65
65 65
65 65
65
65
60
60 28
32
36
38
40
44
48
52
20
20
20
20
20
20
20
20
50 60
35
40
45
57
50
55
60
65
Figure 67. Thread dial chart.
Figure 66. Thread dial chart location.
Find the TPI (threads per inch) that you want to
cut on the thread dial chart (see Figure 67), 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.
Thread Dial
Chart
-46- Model G0765 (Mfd. Since 5/15)
Even TPI Not Divisible by 4 or 8: Use opposing
number pairs 1 and 5 on thread dial (see example
in Figure 70).
7
1
3
5
Thread Dial
TPI Dial Number
1, 514, 18, 22, 26, 38
Figure 70. Example of even numbered inch
thread pitch.
Odd TPI: Use line 1 on thread dial (Figure 71).
7
1
3
5
Thread Dial
TPI Dial Number
113, 19
Figure 71. Example of odd numbered inch
thread pitch.
7
1
3
5
Thread Dial
TPI Dial Number
1, 3,5, 7
12, 20, 28, 36, 44,
52
Figure 69. Example of inch thread pitch divisible
by 4.
Even TPI Divisible by 4: Use any numbered line
on thread dial (see example in Figure 69).
The following examples explain how to use
the thread dial and the thread dial chart.
TPI Divisible by 8: Use any line on the thread dial
(see example in Figure 68).
7
1
3
5
Thread Dial
TPI Dial Number
16, 24, 32, 40, 48 1–8
Figure 68. Any position on dial for threading TPI
divisible by 8.
Model G0765 (Mfd. Since 5/15) -47-
SECTION 5: ACCESSORIES
ACCESSORIES
order online at www.grizzly.com or call 1-800-523-4777
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.
NOTICE
Refer to our website or latest catalog for
additional recommended accessories.
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
D3640—Shop Fox Tool Table Plus
This new, tool table plus was designed to answer
customer requests for a slightly wider and taller
table than our D2056 to accommodate a variety
of bench-top machines.
Figure 73. D3640 Shop Fox Tool Table Plus.
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 72. 11-Pc. Carbide-Tipped Tool Set.
SB1365—South Bend Way Oil for Lathes
Engineered for the high pressure exerted on
horizontal or vertical ways and slides. Protects
against rust and corrosion. Ensures stick-free,
smooth motion which maximizes finishes and
extends the life of your machine. Won’t gum up!
12 oz. AMGA#2 (ISO 68 Equivalent).
Figure 74. Way Oil.
-48- Model G0765 (Mfd. Since 5/15)
SECTION 6: MAINTENANCE
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 cor-
rectly.
• Damaged or malfunctioning components.
Daily, Before Operations
• Add oil to the ball oilers (Page 51).
• Lubricate the leadscrew and carriage rack
(Page 52).
• Lubricate the bedways (Page 52).
• Clean/lubricate the cross slide and com-
pound slide (Page 52).
• Disengage the half nut on the carriage (to
prevent crashes upon startup).
Daily, After Operations
• Press the Emergency Stop button (to prevent
accidental startup).
• Vacuum/clean all chips and swarf from bed,
slides.
• Wipe down all unpainted or machined sur-
faces with an oiled rag.
Annually
• Lubricate change gear bushing and tumbler
gears (Page 53).
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 wet/dry shop vacuum that is
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 vulner-
able to rust if left unprotected. Use a quality ISO
68 way oil (see Page 49 for offerings from Grizzly)
to prevent corrosion.
Always disconnect power
to the machine before
performing maintenance.
Failure to do this may
result in serious person-
al injury.
Model G0765 (Mfd. Since 5/15) -49-
Lubrication
NOTICE
The recommended lubrication is based on
light-to-medium usage. Keeping in mind
that lubrication helps to protect the value
and operation of the lathe, these lubrication
tasks may need to be performed more fre-
quently than recommended here, depend-
ing on usage.
Failure to follow reasonable lubrication
practices as instructed in this manual could
lead to premature failure of lathe compo-
nents and will void the warranty.
Lubrication Task Frequency Page
Ref.
Ball Oilers Daily This
Page
Leadscrew, End Brackets,
and Carriage Rack Daily 52
Bedways Daily 52
Cross Slide & Compound
Slide Daily 52
Change Gear Bushing Annually 53
Tumbler Gears Annually 53
Lubrication Frequency
Items Needed Qty
Clean Rag ........................................ As Needed
Mineral Spirits .................................... As Needed
Stiff Brush .......................................................... 1
Wrench 4mm ..................................................... 1
Pump-Type Oil Can w/Plastic Cone Tip ............ 1
Ball Oilers
Oil Type ..............................ISO 32 or Equivalent
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 rubber-
ized 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 sur-
face 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 75 to identify the location of each
ball oiler.
Figure 75. Ball oilers.
Ball Oilers
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 LATHE FROM POWER!
We recommend using Model SB1365 Way Oil or
equivalent (see Page 49) for most of the lubrica-
tion tasks.
-50- Model G0765 (Mfd. Since 5/15)
Leadscrew & Carriage Rack
Oil Type ....Grizzly SB1365 or ISO 68 Equivalent
Amount .............................................. As Needed
Lubrication Frequency ................................. Daily
Before lubricating the leadscrew and carriage
rack (see Figure 76), clean them first with min-
eral 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 and both end brackets.
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.
Bedways
Oil Type ....Grizzly SB1365 or ISO 68 Equivalent
Amount .............................................. As Needed
Lubrication Frequency ................................. Daily
Before lubricating the bedways (see Figure 76),
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.
Cross Slide & Compound Slide
Oil Type ....Grizzly SB1365 or ISO 68 Equivalent
Amount .................................................Thin Coat
Lubrication Frequency ................................. Daily
Use the handwheels to separately move the
cross slide and compound slide as far forward as
possible (see Figure 77). 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.
Figure 77. Location of bottom slides.
Cross Slide
Bottom Slide
Compound
Bottom
Slide
Figure 76. Leadscrew, leadscrew brackets,
carriage rack, and bedways.
Bedways
Leadscrew Leadscrew End Bracket
Leadscrew End Bracket on
Headstock Side (Headstock
Cover Removed for Clarity)
Carriage Rack
Model G0765 (Mfd. Since 5/15) -51-
Change Gear Bushing
Grease Type .....................White Lithium NLGI#2
Frequency .............................................. Annually
Amount .................................................Thin Coat
The plastic end gears do not need to be lubri-
cated. However, we recommend lightly lubricating
the B/C change gear keyed bushing with white
lithium grease.
Tumbler Gears
Oil Type ....Grizzly SB1365 or ISO 68 Equivalent
Amount ................................................ 2-3 Drops
Lubrication Frequency ........................... Annually
Add lubricant between the bolt heads and tumbler
gears shown in Figure 79.
Remove the end cover and B/C change gear,
clean the shaft and keyed bushing with mineral
spirits and dry. Apply a thin coat of white lithium
grease to the inside of the bushing shaft, then re-
install it.
Machine Storage
Preparing Lathe for Storage
1. DISCONNECT LATHE FROM POWER!
2. 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 cov-
ered but that the rust preventative or grease
is kept off of painted surfaces.
3. 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.
4. Place a few moisture absorbing desiccant
packs inside of the electrical box.
5. Cover lathe and place it in a dry area that is
out of direct sunlight and away from hazard-
ous fumes, paint, solvents, or gas. Fumes
and sunlight can bleach or discolor paint.
6. Every few months, rotate by hand all gear-
driven 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 spot-
ting is not beginning to occur.
Bringing Lathe Out of Storage
1. Remove moisture-absorbing desiccant packs
from electrical box.
2. Repeat Test Run and Spindle Break-In pro-
cedures, beginning on Page 21.
Figure 79. Tumbler gear lubrication points.
Bolts
Figure 78. B/C change gear removed to access
keyed bushing.
Keyed Bushing
Gear
Shaft
-52- Model G0765 (Mfd. Since 5/15)
SECTION 7: SERVICE
Troubleshooting
Symptom Possible Cause Possible Solution
Machine does not
start or a circuit
breaker trips.
1. Emergency stop button engaged or at fault.
2. Variable speed dial in OFF position or at
fault.
3. Spindle direction switch turned to "0" or at
fault.
4. Blown fuse.
5. Incorrect power supply voltage.
6. Power supply circuit breaker tripped or fuse
blown.
7. Wiring open/has high resistance.
8. Motor brushes at fault.
9. On/Off switch at fault.
10. Motor at fault.
1. Press side tab in and lift switch cover. Press On
button to reset; replace if not working properly.
2. Turn variable speed dial past "0". Ensure dial has
correct voltage. Replace if faulty.
3. Turn spindle direction switch to "F" or "R". Ensure
dial has correct voltage. Replace if faulty.
4. Replace fuse/ensure no shorts (Page 58).
5. Ensure correct power supply voltage.
6. Ensure circuit is sized correctly and free of shorts.
Reset circuit breaker or replace fuse.
7. Check/fix broken, disconnected, or corroded wires.
8. Remove/replace brushes (Page 59).
9. Replace switch.
10. Test/repair/replace.
Machine stalls or is
underpowered.
1. Feed rate/cutting speed too fast.
2. Wrong workpiece material.
3. Machine undersized for task.
4. Motor overheated.
5. Computer board at fault.
6. Motor speed dial at fault.
7. Timing belt slipping.
8. Motor brushes at fault.
9. Pulley/sprocket slipping on shaft.
10. Motor bearings at fault.
11. Motor at fault.
1. Decrease feed rate/cutting speed.
2. Use correct type/size of metal.
3. Inspect and replace if at fault.
4. Use sharp bits; reduce feed rate/depth of cut.
5. Clean motor, let cool, and reduce workload.
6. Test and replace if at fault.
7. Tension/replace belt; ensure pulleys are aligned.
8. Remove/replace brushes (Page 59).
9. Replace loose pulley/shaft.
10. Test/repair/replace.
11. Test/repair/replace.
Machine has
vibration or noisy
operation.
1. Motor or component loose.
2. Pulley loose.
3. Motor fan rubbing on fan cover.
4. Motor bearings at fault.
5. Cutting tool chattering.
6. Workpiece or chuck at fault.
1. Inspect/replace damaged bolts/nuts, and retighten
with thread locking fluid.
2. Realign/replace shaft, pulley, setscrew, and key.
3. Fix/replace fan cover; replace loose/damaged fan.
4. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
5. Replace/sharpen cutting tool; index tool to spindle
centerline; use correct feed rate and cutting RPM.
6. Properly secure or center workpiece in chuck or
faceplate; replace defective chuck.
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.
Model G0765 (Mfd. Since 5/15) -53-
Lathe Operation
Symptom Possible Cause Possible Solution
Bad surface finish. 1. Wrong spindle speed or feed rate.
2. Dull tooling or wrong tool selection.
3. Tool height not at spindle centerline.
4. Too much play in gibs.
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
38).
4. Tighten gibs (see Page 57).
Tapered tool difficult
to remove from
tailstock quill.
1. Quill not fully retracted into tailstock.
2. Contaminants not removed from taper
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.
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.
4. Leadscrew mechanism worn or out of
adjustment.
1. Clean ways and relubricate.
2. Adjust gibs (see Page 57).
3. Tighten handwheel fasteners, adjust handwheel
backlash to a minimum (see Page 56).
4. Adjust leadscrew to remove end play (see Page
56).
Cross slide,
compound,
or carriage
handwheels hard to
move.
1. Ways loaded with chips, dust, or grime.
2. Gibs are too tight.
3. Backlash setting too tight.
4. Bedways are dry.
5. Half nut lever engaged.
1. Clean ways and lubricate.
2. Loosen gibs slightly (see Page 57).
3. Slightly loosen backlash setting (see Page 56).
4. Lubricate bedways.
5. Disengage half nut lever for manual feeding.
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 57).
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 32).
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.
-54- Model G0765 (Mfd. Since 5/15)
Backlash Adjustment
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 lubri-
cated 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 sliding block and leadscrew.
Reducing backlash to less than 0.002" is
impractical and can lead to accelerated wear
in the leadscrew and other components.
Avoid the temptation to overtighten the
backlash nut or screw while adjusting.
Cross Slide
Tools Needed: Qty
Hex Wrench 2.5mm ........................................... 1
Hex Wrench 3mm ............................................. 1
The cross slide backlash is adjusted by tighten-
ing and loosening the inner and outer cap screws
shown in Figure 80. The inner screw adjusts
the height of the leadscrew nut, taking up lash
between the nut and leadscrew.
Angle the compound rest so you can access
the cap screws shown in Figure 80. Loosen the
outer cap screws, adjust the inner cap screw,
then tighten the outer cap screws. 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. Re-adjust the
compound rest angle when you are finished.
Figure 80. Cross slide backlash adjustment cap
screw.
Outer Cap
Screws
Inner Cap
Screw
Leadscrew End-Play
Adjustment
After a long period of time, you may find that the
leadscrew develops excessive end-play or lateral
movement. This lathe is designed so that end-
play can be removed with a simple adjustment.
Tools Needed Qty
Hex Wrench ................................................. 4mm
Open-End Wrench 12mm .................................. 1
To remove leadscrew end play:
1. DISCONNECT LATHE FROM POWER.
2. Loosen set screw shown in Figure 81 sev-
eral turns.
3. Tighten retaining nut with your fingers so it
just contacts end bracket, then back nut off
1⁄8 turn.
4. Hold nut in position and tighten set screw
against leadscrew until snug.
Figure 81. Leadscrew end-play adjustments.
Retaining Nut
Leadscrew
End Bracket
Set Screw
Model G0765 (Mfd. Since 5/15) -55-
Gib Adjustment
The goal of adjusting the gib screws is to remove
sloppiness or "play" from the ways without over-
adjusting them to the point where they become
stiff and difficult to move.
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.
3. Adjust all three 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.
4. When satisfied with gib adjustment, use hex
wrench to prevent cap screws from moving,
then retighten hex nuts to secure the settings.
5. Recheck movement of slide and, if neces-
sary, repeat Steps 2–4.
Figure 83. Compound slide gib adjustment hex
nuts and cap screws.
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.
Clean and lubricate the ways before beginning
any adjustments. Refer to Lubrication on Page
51 for instructions and lubricant specifications.
Tools Needed Qty
Open-End Wrench 7mm .................................... 1
Hex Wrench 3mm .............................................. 1
To adjust cross slide and compound slide
gibs:
1. DISCONNECT LATHE FROM POWER!
2. Loosen three hex nuts on side of cross slide
or compound slide (see Figures 82–83).
Figure 82. Cross slide gib adjustment hex nuts
and cap screws.
Cross Slide
Adjustment
Fasteners
Compound Slide
Adjustment
Fasteners
-56- Model G0765 (Mfd. Since 5/15)
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 slop-
py will produce inaccurate turning or threading
results.
Tool Needed Qty
Hex Wrench 2mm .............................................. 1
To adjust half nut:
1. DISCONNECT LATHE FROM POWER!
2. Disengage half nut.
3. Adjust gib set screws (see Figure 84) in
small, even increments so one end of gib
does not become tighter than the other.
Half Nut Adjustment Fuse Replacement
This lathe features an on-board fuse designed
to blow to protect sensitive electrical parts from
thermal damage in the event of an overload. If the
spindle does not start, replace the fuse.
Replacement fuse part number: P0765166.
To replace fuse:
1. DISCONNECT LATHE FROM POWER!
2. Unthread fuse holder by rotating counter-
clockwise (see Figure 85) and remove fuse.
4. Engage/disengage half nut several times and
notice how it feels. The adjustment is cor-
rect when half nut firmly and easily engages
leadscrew while opening and closing.
5. Repeat Steps 3–4, if necessary, until satis-
fied with feel of half nut engagement.
Figure 84. Half nut gib adjustment set screws.
Set
Screws
Gib
Half-Nut
3. Insert new fuse into fuse holder.
4. Re-install fuse holder.
Figure 85. Fuse holder and fuse.
Fuse
Holder
Hole
Fuse
Holder
Fuse
Model G0765 (Mfd. Since 5/15) -57-
Brush Replacement
This lathe is equipped with a universal motor
that uses two carbon brushes to transmit elec-
trical current inside the motor. These brushes
are considered to be regular "wear items" or
"consumables" that will need to be replaced dur-
ing the life of the motor. The frequency of required
replacement is often related to how much the
motor is used and how hard it is pushed.
Replace the carbon brushes when the motor no lon-
ger reaches full power, or when the brushes mea-
sure less than 1⁄4" long (new brushes are 5⁄8" long).
Tools Needed Qty
Flat Head Screwdriver #2 .................................. 1
Phillips Head Screwdriver #2 ............................ 1
Replacement brush part number: P0765150-1
Cap
3. Unscrew rear brush cap and carefully remove
brush from motor (see Figure 87).
To replace motor brushes:
1. DISCONNECT LATHE FROM POWER!
2. Remove the three screws that secure rear
motor cover, then remove cover to gain
access to rear brush (see Figure 86).
Figure 86. Location of rear motor brush cap.
Screws
Brush Cap
Figure 87. Rear motor brush components
removed.
Brush
4. Unscrew front brush cap and remove brush
from motor (see Figure 88).
5. Install new brushes.
6. Re-install brush caps.
7. Replace rear motor cover.
Figure 88. Front brush components removed.
BrushBrush Cap
-58- Model G0765 (Mfd. Since 5/15)
Timing Belt Tension
& Replacement
The timing belt transfers power from the motor to
the drive pulley (see Figure 89).
Because the molded teeth in the belt fit together
with matching teeth in the pulley, the timing belt
will not slip unless the belt teeth become overly
worn or belt tension is overly loose.
An improperly tensioned timing belt will slip, which
quickly causes it to become damaged and unsuit-
able for further use. Therefore, it is essential to
maintain belt tension properly to prevent slippage.
Once a timing belt begins to slip, it must be
replaced in order to regain proper power transmis-
sion.
Tools Needed Qty
Hex Wrench 4mm .............................................. 1
Hex Wrench 5mm .............................................. 1
Open-End Wrench/Socket 10mm ...................... 1
Phillips Head Screwdriver .................................. 1
Punch & Hammer or
Adjustable Spanner Wrench .............................. 1
Black Fine-Tip Felt Marker ................................ 1
Tensioning Timing Belt
1. DISCONNECT LATHE FROM POWER!
2. Perform Steps 2–5 on Page 61 to remove
components to access timing belt.
3. Verify belt is centered on drive pulley (see
Figure 89) by hand-rotating chuck. The belt
should be seated so it does not contact head-
stock or hang out at end of pulley.
— If belt is not centered, loosen motor mount
hex nuts (see Figure 89), re-adjust motor
position and re-tension belt.
4. Loosen both motor mount hex nuts.
5. Ensure belt teeth are properly engaged in
pulley notches, push down on motor with
light/moderate pressure, and tighten motor
mount hex nuts.
Note: Position motor so you can access
brush cap through hole in bed.
The timing belt is correctly tensioned when
there is approximately 1⁄8" deflection when it
is pushed with moderate pressure, as shown
in Figure 90.
Figure 89. Timing belt and motor mount hex
nuts (components removed for clarity).
Motor
Mount
Hex Nuts
Motor
Pulley
Pulley
Deflection
Pulley
Figure 90. Correct timing-belt deflection.
1⁄8"
—If there is more than 1⁄8" deflection when
timing belt is pushed with moderate pres-
sure, loosen motor mount hex nuts, and
adjust tension until it is correct.
6. Perform Steps 9–11 on Page 61 to re-install
components you removed earlier.
Timing
Belt
Drive
Pulley
Model G0765 (Mfd. Since 5/15) -59-
Replacing Timing Belt
1. DISCONNECT LATHE FROM POWER!
2. Remove end cover, rear motor cover, and
electrical cabinet.
7. Slide off old timing belt and install the new
one, making sure that belt teeth are seated
together with pulley teeth (see Figure 93).
Figure 91. Components to be removed to
replace timing belt.
3. Using a fine-tip felt marker, place alignment
marks on inner spanner nut and gear shown
in Figure 91. The purpose or these marks is
to help re-install the outer spanner nut.
4. Carefully remove outer spanner nut, speed
sensor, and sensor wheel.
5. Remove side cover assembly.
6. Loosen motor mount hex nuts shown in
Figure 92.
Speed
Sensor
Side
Cover
Outer
Spanner
Nut
8. Tension timing belt. (Refer to Tensioning
Timing Belt on Page 60 for detailed instruc-
tions.)
9. Check alignment marks you made on inner
spanner nut and gear in Step 3. The marks
should still be aligned.
—If marks are not aligned, adjust inner span-
ner nut as needed to align them.
10. Re-install side cover, sensor wheel, speed
sensor, and outer spanner nut.
11. Re-install electrical cabinet, rear motor cover,
and end cover.
Figure 93. Timing belt installed.
Timing
Belt
Gear Sensor
Wheel
Inner
Spanner
Nut
Figure 92. Location of motor mount hex nuts.
Motor
Mount
Hex Nuts
SHOCK HAZARD. Working on wiring that is con-
nected 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 com-
ponents!
MODIFICATIONS. Modifying the wiring beyond
what is shown in the diagram may lead to unpre-
dictable results, including serious injury or fire.
This includes the installation of unapproved after-
market parts.
WIRE CONNECTIONS. All connections must
be tight to prevent wires from loosening during
machine operation. Double-check all wires dis-
connected or connected during any wiring task to
ensure tight connections.
CIRCUIT REQUIREMENTS. You MUST follow
the requirements at the beginning of this man-
ual when connecting your machine to a power
source.
WIRE/COMPONENT DAMAGE. Damaged wires
or components increase the risk of serious per-
sonal 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 expe-
riencing difficulties understanding the information
included in this section, contact our Technical
Support at (570) 546-9663.
Wiring Safety Instructions
The photos and diagrams
included in this section are
best viewed in color. You
can view these pages in
color at www.grizzly.com.
These pages are current at the time of printing. However, in the spirit of improvement, we may make chang-
es 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.
SECTION 8: WIRING
-60- Model G0765 (Mfd. Since 5/15)
Model G0765 (Mfd. Since 5/15) -61-
READ ELECTRICAL SAFETY
ON PAGE 62!
23
11 2
23
3
4
24
13
14
A1
Top of Control Panel
Bottom of Control Panel
Front of Control Panel
KEDU KJD17B
ON/OFF SWITCH
4WPLJ-2T
DIGITAL READOUT
J1
CON4
KEDU
ZHA
Left Side
From
Behind
KEDU
ZHA
Right Side
From
Behind
DIRECTION SWITCH
DIRECTION SWITCH POWER LAMP
10
7
159
2 6
3
8 412
11
T
11
12
P1 P3
P2
A-
L2
A+
L1
4 3 2 1
3
2
1
24
24
24
23
13
14
14
14
14
P1
P1
P2
P2
P3
P3
12
12
11
11
7
7
9
9
5
5
10
10 10
6
A−
L2
L2
2
A+
12
12
L1
L1
L2
L2
JD−014
REV A 09111
CIRCUIT BOARD
KSP
CIRCUIT BOARD
FUSE VARIABLE
SPEED
GND
To
Plug
Page
65
To Speed
Sensor
Page 65
To Motor
Page 65
Machine
Frame
Control Panel Wiring
-62- Model G0765 (Mfd. Since 5/15)
READ ELECTRICAL SAFETY
ON PAGE 62!
Control Panel Wiring Photos
Figure 96. Control panel wiring (top).
Figure 94. G0765 wiring overview.
Figure 97. Control panel wiring (front).Figure 95. Control panel wiring (bottom).
Model G0765 (Mfd. Since 5/15) -63-
READ ELECTRICAL SAFETY
ON PAGE 62!
MOTOR
Neutral
Hot
Ground
110 VAC
5-15 Plug
SPEED SENSOR
83ZYT007
110V
Wires connect on back
side of circuit board
To Control Panel
Page 63
To Control Panel
Page 63
To Control Panel
Page 63
Figure 100. Speed sensor
wiring.
Figure 98. Motor wiring.
Figure 99. Speed sensor location.
Motor/Speed Sensor/ Plug Wiring
Speed Sensor
-64- Model G0765 (Mfd. Since 5/15)
1
2
3
4
5
6
7
8
9
9
10
10 11
11 12
12
13
14
15
16
17
18
19
20
21
21
22
23
23
24
25
26
27
28
29
30
31
32
33
35
36
37
38
39
40
41
42
43
44
44
45
157
46
47
48
49
50 50
51
52
53
54
56
57
58
59
59 60
61
62
62
63 63
64
65
66
67
68 69
70
71
74
75
76
77
78
79
80
81V2
82V2
83
84
85
86
87
88
89
90
91
92
93
94
95 96 97
98
98
99
99
100
101
102
105
106
107
108
109
110
111
112
113
114
115 116
117
119
123
124
125
126
127
128
129
131
133
134
135
136
137
138
139
140
141
142
143
144
145
146
148
150
150-1
150-2
151
152
153
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
174 175
176
177
178
179
180 181
182
183
184
185
186
187
188
189
190
191
192
193 194
52
83
67
67
67
195
196 85
63
84
83
90
4
5
6
21
20
19
6
52
90
83
87
67
20
56
56
18
22
8
55
Main
SECTION 9: PARTS
Model G0765 (Mfd. Since 5/15) -65-
Main
REF PART # DESCRIPTION REF PART # DESCRIPTION
1 P0765001 BED 56 P0765056 CAP SCREW M6-1 X 6
2 P0765002 3-JAW CHUCK 3" W/INTERNAL JAWS 57 P0765057 FLAT WASHER 6MM
3 P0765003 SPINDLE MT#3 58 P0765058 BUSHING W/KEYWAY
4 P0765004 STUD-DE M6-1 X 60, 15 59 P0765059 GEAR 80T
5 P0765005 FLAT WASHER 6MM 60 P0765060 SHAFT
6 P0765006 HEX NUT M6-1 61 P0765061 PIVOT ARM
7 P0765007 KEY 5 X 5 X 40 62 P0765062 FLAT WASHER 8MM
8 P0765008 KEY 4 X 4 X 8 63 P0765063 HEX NUT M8-1.25
9 P0765009 CAP SCREW M5-.8 X 10 64 P0765064 SHAFT
10 P0765010 BEARING COVER 65 P0765065 THREAD DIAL
11 P0765011 BALL BEARING 6206ZZ 66 P0765066 GEAR SHAFT 16T
12 P0765012 SPACER 67 P0765067 CAP SCREW M6-1 X 16
13 P0765013 HEADSTOCK CASTING 68 P0765068 THREAD DIAL BODY
14 P0765014 COMBO GEAR 21T/29T 69 P0765069 SET SCREW M4-.7 X 10
15 P0765015 SPACER 70 P0765070 APRON
16 P0765016 GEAR 45T 71 P0765071 HALF NUT GIB
17 P0765017 SPANNER NUT 74 P0765074 HALF NUT SHAFT
18 P0765018 SET SCREW M5-.8 X 8 75 P0765075 HALF NUT 2-PC SET
19 P0765019 STEEL BALL 5MM 76 P0765076 COMPOUND REST ANGLE SCALE
20 P0765020 COMPRESSION SPRING 4 X 9 77 P0765077 FLAT HD SCR M4-.7 X 10
21 P0765021 SET SCREW M6-1 X 6 78 P0765078 CAM
22 P0765022 EXT RETAINING RING 12MM 79 P0765079 HALF NUT LEVER
23 P0765023 BALL BEARING 6201ZZ 80 P0765080 SHAFT
24 P0765024 COMBO GEAR 12T/20T 81V2 P0765081V2 COMBO GEAR 11T/49T V2.05.15
25 P0765025 KEY 4 X 4 X 45 82V2 P0765082V2 GEAR SHAFT 29T V2.05.15
26 P0765026 H/L SHAFT 83 P0765083 SET SCREW M6-1 X 12
27 P0765027 SPINDLE PULLEY 84 P0765084 HANDWHEEL
28 P0765028 EXT RETAINING RING 10MM 85 P0765085 HANDWHEEL HANDLE M5-.8 X 6
29 P0765029 TIMING BELT 1.5M-70-9.5 86 P0765086 CROSS BALL HANDLE 2 PC.
30 P0765030 SHIFTING FORK 87 P0765087 GRADUATED DIAL
31 P0765031 SHIFTING ARM 88 P0765088 CROSS LEADSCREW BRACKET
32 P0765032 H/L LEVER HUB 89 P0765089 CROSS LEADSCREW
33 P0765033 H/L LEVER M8-1.25 X 10 90 P0765090 HEX NUT M5-.8
35 P0765035 HANDLE 91 P0765091 CAP SCREW M6-1 X 12
36 P0765036 HANDLE MOUNT 92 P0765092 SADDLE CLAMP PLATE
37 P0765037 COMPRESSION SPRING 93 P0765093 SADDLE
38 P0765038 PINION GEAR 25T 94 P0765094 CROSS SLIDE GIB
39 P0765039 INDICATOR 95 P0765095 CROSS LEADSCREW NUT
40 P0765040 GEAR SHOULDER BOLT M8-1.25 X 5 96 P0765096 COMPOUND REST SWIVEL BASE
41 P0765041 PINION GEAR 20T 97 P0765097 CAP SCREW M8-1.25 X 20
42 P0765042 HEADSTOCK SIDE COVER 98 P0765098 HEX NUT M4-.7
43 P0765043 CAP SCREW M6-1 X 20 99 P0765099 SET SCREW M4-.7 X 16
44 P0765044 CAP SCREW M5-.8 X 10 100 P0765100 CROSS SLIDE
45 P0765045 GEAR 45T 101 P0765101 SET SCREW M5-.8 X 10
46 P0765046 SHAFT 102 P0765102 CAP SCREW M4-.7 X 10
47 P0765047 KEY 4 X 4 X 8 105 P0765105 COMPOUND REST SLIDE BASE
48 P0765048 GEAR MOUNT 106 P0765106 CAP SCREW M4-.7 X 14
49 P0765049 CAP SCREW M5-.8 X 15 107 P0765107 COMPOUND REST GIB
50 P0765050 PINION GEAR 20T 108 P0765108 COMPOUND REST
51 P0765051 FLAT WASHER 5MM 109 P0765109 INDENT PIN
52 P0765052 CAP SCREW M5-.8 X 10 110 P0765110 TOOL POST CAP SCREW M8-1.25 X 25
53 P0765053 END GEAR COVER 111 P0765111 TOOL POST LOCK LEVER
54 P0765054 CAP SCREW M5-.8 X 40 112 P0765112 TOOL POST BODY
55 P0765055 CAP SCREW M4-.7 X 12
-66- Model G0765 (Mfd. Since 5/15)
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.
Main
REF PART # DESCRIPTION REF PART # DESCRIPTION
113 P0765113 STUD-DE M10-1.5 X 50, 15 159 P0765159 FUSE HOLDER
114 P0765114 COMPOUND LEADSCREW 160 P0765160 SPINDLE SPEED DIGITAL READOUT 4WPLJ-2T
115 P0765115 COMPOUND LEADSCREW BRACKET 161 P0765161 POTENTIOMETER B4K7 4.7KOHM
116 P0765116 CAP SCREW M4-.7 X 14 162 P0765162 F/O/R ROTARY SWITCH TUV ZH-A
117 P0765117 MOTOR COVER (FRONT) 163 P0765163 CIRCUIT BOARD KSP W/ TRANSFORMER
119 P0765119 HEX NUT M10-1.5 164 P0765164 CIRCUIT BOARD JD-0410 W/ MOUNTING BRACKET
123 P0765123 ELECTRICAL CABINET 165 P0765165 E-STOP KEDU KJD17B/120V
124 P0765124 POWER CORD 18G 3W 60" 5-15 166 P0765166 FUSE 10A 250V FAST-ACTING GLASS
125 P0765125 FOOT (RUBBER) 167 P0765167 COMPOUND REST BALL HANDLE
126 P0765126 CHIP TRAY 168 P0765168 SPEED SENSOR WHEEL
127 P0765127 LEADSCREW OUTBOARD BRACKET 169 P0765169 SPEED SENSOR H12A5
128 P0765128 KEY 4 X 4 X 8 170 P0765170 CAP SCREW M8-1.25 X 25
129 P0765129 LONGITUDINAL LEADSCREW 16TPI 171 P0765172 DEAD CENTER MT#3
131 P0765131 LEADSCREW END BRACKET 174 P0765174 FACEPLATE 5"
133 P0765133 CAP SCREW M3-.5 X 10 175 P0765175 LATHE CHUCK KEY 3/8" STD
134 P0765134 RACK 176 P0765176 EXTERNAL JAWS 3-PC SET
135 P0765135 TAILSTOCK CLAMP PLATE 177 P0765177 HEX WRENCH 2.5MM
136 P0765136 FLAT WASHER 10MM 178 P0765178 HEX WRENCH 3MM
137 P0765137 SET SCREW M5-.8 X 16 179 P0765179 HEX WRENCH 4MM
138 P0765138 TAILSTOCK CASTING (UPPER/LOWER) 180 P0765180 HEX WRENCH 5MM
139 P0765139 TAILSTOCK LEADSCREW 181 P0765181 HEX WRENCH 6MM
140 P0765140 TAILSTOCK LEADSCREW BRACKET 182 P0765182 BOTTLE FOR OIL
141 P0765141 CAP SCREW M4-.7 X 10 183 P0765183 GEAR 30T
142 P0765142 TAILSTOCK QUILL 184 P0765184 GEAR 35T
143 P0765143 DEAD CENTER MT#2 185 P0765185 GEAR 40T
144 P0765144 STUD-DE M8-1.25 X 60, 25 186 P0765186 GEAR 45T
145 P0765145 CLAMP SLEEVE 187 P0765187 GEAR 50T
146 P0765146 QUILL LOCK LEVER 188 P0765188 GEAR 55T
148 P0765148 MOTOR PULLEY 189 P0765189 GEAR 57T
150 P0765150 MOTOR 110VDC 190 P0765190 GEAR 57T
150-1 P0765150-1 MOTOR CARBON BRUSH 2-PC SET 191 P0765191 GEAR 60T
150-2 P0765150-2 CARBON BRUSH CAP 192 P0765192 WRENCH 6 X 7MM OPEN-ENDS
151 P0765151 MOTOR COVER (REAR) 193 P0765193 WRENCH 8 X 10MM OPEN-ENDS
152 P0765152 STRAIN RELIEF 3/4" NPT LT STRAIGHT 194 P0765194 WRENCH 13 X 16MM OPEN-ENDS
153 P0765153 SPLASH GUARD 195 P0765195 ELECTRICAL BARRIER
157 P0765157 FLAT WASHER 5MM 196 P0765196 PHLP HD SCR M5-.8 X 12
158 P0765158 POWER LIGHT
Model G0765 (Mfd. Since 5/15) -67-
Steady Rest
REF PART # DESCRIPTION REF PART # DESCRIPTION
173 P0765173 STEADY REST ASSEMBLY 173-6 P0765173-6 T-BOLT M8-1.25 X 26
173-1 P0765173-1 HEX NUT M8-1.25 173-7 P0765173-7 HEX NUT M8-1.25
173-2 P0765173-2 LOCK WASHER 8MM 173-8 P0765173-8 FLAT WASHER 8MM
173-3 P0765173-3 STEADY REST CASTING 173-9 P0765173-9 BASE CLAMP
173-4 P0765173-4 STEADY REST FINGER 173-10 P0765173-10 HEX BOLT M8-1.25 X 45
173-5 P0765173-5 ADJUSTING SCREW
173
173-1
173-2
173-3
173-4
173-5
173-6
173-7
173-8
173-9
173-10
-68- Model G0765 (Mfd. Since 5/15)
Labels & Cosmetics (Front)
251
252
253
254
255
256 257 258
259
260
261
REF PART # DESCRIPTION REF PART # DESCRIPTION
251 P0765251 MACHINE ID LABEL 257 P0765257 DRO LABEL
252 P0765252 THREAD DIAL CHART LABEL 258 P0765258 SPINDLE SPEED WARNING LABEL
253 P0765253 READ MANUAL LABEL 259 P0765259 GRIZZLY GREEN TOUCH-UP PAINT
254 P0765254 GLASSES/FACE SHIELD WARNING LABEL 260 P0765260 HALF NUT LEVER LABEL
255 P0765255 CHANGE DIRECTION NOTICE LABEL 261 P0765261 DISCONNECT POWER WARNING LABEL
256 P0765256 ENTANGLEMENT WARNING LABEL
Model G0765 (Mfd. Since 5/15) -69-
Labels & Cosmetics (Rear)
254
255
256
262
263
264
265
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.
REF PART # DESCRIPTION REF PART # DESCRIPTION
254 P0765254 GLASSES/FACE SHIELD WARNING LABEL 263 P0765263 OUTBOARD ENTANGLE WARNING LABEL
255 P0765255 CHANGE DIRECTION NOTICE LABEL 264 P0765264 THREAD CHART LABEL
256 P0765256 ENTANGLEMENT WARNING LABEL 265 P0765265 ELECTRICITY LABEL
262 P0765262 SPEED RANGE LABEL
-70- Model G0765 (Mfd. Since 5/15)
SECTION 10: APPENDIX
Threading Charts
Inch and metric thread charts for the Model G0765 are provided below for your reference. An inch thread
chart is provided on the headstock, but a metric chart is not.
TPI GEARS TPI GEARS
ABCD ABCD
12 40 65 ⁄30 26 40 60 ⁄65
13 40 65 60 30 28 20 65 ⁄35
14 40 65 ⁄35 32 20 65 ⁄40
16 40 65 ⁄40 36 20 65 ⁄45
18 40 65 ⁄45 38 20 50 60 57
19 40 50 60 57 40 20 65 ⁄50
20 40 65 ⁄50 44 20 65 ⁄55
22 40 65 ⁄55 48 20 65 ⁄60
24 40 65 ⁄60 52 20 60 ⁄65
Figure 101. Threads per inch chart (TPI).
mm/
pitch
Gear
ABCD
0.4 20 57 40 55
0.5 20 57 45 50
0.6 20 60 57 50
0.7 30 45 40 60
0.8 40 55 35 50
1.0 30 60 57 45
1.25 45 40 35 50
1.5 65 40 35 60
1.75 35 60 57 30
2.0 35 45 65 40
Figure 102. Metric thread pitch chart.
CUT ALONG DOTTED LINE
Name _____________________________________________________________________________
Street _____________________________________________________________________________
City _______________________ State _________________________ Zip _____________________
Phone # ____________________ Email _________________________________________________
Model # ____________________ Order # _______________________ Serial # __________________
WARRANTY CARD
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.
1. How did you learn about us?
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____ $20,000-$29,000 ____ $30,000-$39,000 ____ $40,000-$49,000
____ $50,000-$59,000 ____ $60,000-$69,000 ____ $70,000+
4. What is your age group?
____ 20-29 ____ 30-39 ____ 40-49
____ 50-59 ____ 60-69 ____ 70+
5. How long have you been a woodworker/metalworker?
____ 0-2 Years ____ 2-8 Years ____ 8-20 Years ____20+ Years
6. How many of your machines or tools are Grizzly?
____ 0-2 ____ 3-5 ____ 6-9 ____ 10+
7. Do you think your machine represents a good value? _____Yes _____No
8. Would you recommend Grizzly Industrial to a friend? _____Yes _____No
9. 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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FOLD ALONG DOTTED LINE
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GRIZZLY INDUSTRIAL, INC.
P.O. BOX 2069
BELLINGHAM, WA 98227-2069
Place
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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 par-
ticular 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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