Hubbell Gear Drive Electric Cable Reels Sm21 Users Manual

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2015-02-09

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For reels manufactured after April 16, 2001

INSTALLATION and MAINTENANCE INSTRUCTIONS
SM21 GEAR DRIVE ELECTRIC CABLE REELS

All units are provided with right hand rotation unless otherwise
specified. This means that cable is pulled off spool top left
or bottom right (spool rotates clockwise to wind cable) when
viewing spring end of reel. See diagram on parts page.
Clock-type springs provide power for automatic cable takeup. Spring must be pretensioned at time of installation to
ensure that tension is applied to cable at all times. A tension
adjustment ratchet wrench is provided with each reel.

! WARNING
Do not attempt to relieve spring tension using spanner
wrench. Doing so may result in personal injury.
INSTALLATION
1. Ensure that machinery to be serviced by reel is at position
closest to reel.
2. Securely mount reel in desired position using 1/2"(M12)

bolts. Be sure spool is aligned with cable run.
3. Position optional cable guide, if reel is so equipped. See
CABLE INSTALLATION DRAWING
4. Connect free end of cable to junction box on machine or

adjust cable stop so that desired length of cable extends
from reel.
5. Remove ratchet wrench and cover plate on spring housing
to expose shaft and spring hub. (See Figure 1).
6. Reinstall ratchet wrench (Fig 2). Use long handled wrench
to rotate arbor driver clockwise (for standard rotation).
Number of 360° turns should match last digit in model

number on serial plate.
If model number includes an
"R", reel is reverse rotation and wrench must be rotated
counterclockwise. (See EXPLANATION on parts list page.)

! CAUTION
Do not exceed number of turns indicated on
serial plate. Over-tensioning can cause a
broken spring, sheared shaft or other damage.

MAINTENANCE
Periodically: A. Use compressed air to clean collector assembly
and inside of collector housing. Inspect collector assembly for
brush wear and pitted slip rings.
B. Inspect cable for wear and
“IN” with 2/3
BROKEN SPRING
check mounting bolts and other cable off reel– INDICATORS
SPRING OK
hardware for tightness.
C. Check for broken springs by
pulling about 2/3 cable off reel
“OUT” with 2/3
and observing “Broken Spring
cable off reel–
Indicators” on sides of spring
SPRING
canisters. See Fig. 3.
BROKEN
NOTE: Bearings and springs
Figure 3
are prelubricated and require no
periodic maintenance.

! WARNING
Do not attempt to remove spring from its housing. Clocktype springs can be dangerous to handle. Removal of
spring from housing could result in personal injury.
SPRING REPLACEMENT
The unique SAFETYCHANGE® spring motor consists of a
spring and hub sealed within a housing. A replacement spring is
supplied sealed in its housing and the old unit should be discarded
completely.
1. Turn off all electric power.
2. Disconnect cable from machine junction box.
3. Relieve all spring tension following steps under SPRING
DETENSIONING on last page.
4. Remove inspection cover from face of spring housing.
5. Rotate spool clockwise and observe spring shaft. Shaft
should rotate clockwise and hub (with spring attached) should
remain stationary.
NOTE: Do not attempt to remove spring if resistance is
met or hub tends to rotate with shaft.
Continue to rotate spool and strike end of shaft several sharp
blows with a lead hammer or rubber mallet until shaft rotates
freely and hub remains stationary.
6. Remove (4) nuts which secure spring motor(s) to frame.
7. Slide spring motor(s) off shaft and discard.
NOTE: On multi-spring reels, be sure to remove and save
dowel pins which connect one spring hub with another. Also
remove snap rings on shaft between spring housings.
8. Install replacement spring motor(s), pawls and pawl springs.
NOTE: Pawl springs must be located between the pawls
and the deepest section of the shaft grooves. Make sure that
pawls and pawl springs are inserted flush with ends of shaft and
hub or they may rub against inspection cover.
SPOOL
SHAFT

NOTE: On reels containing more than one spring, the hubs
are connected at the factory. Therefore, by tightening the
outer spring, the inside spring(s) will be tightened.
7. Remove wrench and install on other spring stack. Add
pretension turns as in step 6, above. Springs on both sides
must be adjusted equally. Remove wrench, replace cover
plates and return wrench to stored position.
8. Remove collector cover and connect individual supply
conductors to collector terminals. See ELECTRICAL
CONNECTIONS diagram, on parts page.

SIDE VIEW

9.
10.
11.
12.
13.

SPRING
HUB
(Spring not
shown)

PAWL

SPRING
Install
against flat

END VIEW

SHAFT
GROOVE

Tighten nuts (and extension bolts) securing spring
housing(s) to reel frame.
Connect free end of cable to junction box or adjust cord stop.
Retighten nut on spring detensioner. See SPRING
DETENSIONING, back page.
Tension spring with spanner wrench. Refer to

INSTALLATION section
Replace inspection cover and top gear access cover.
CONTINUED ON BACK PAGE

ILLUSTRATED PARTS LIST

SM-21 GEAR DRIVE ELECTRIC CABLE REELS manufactured after April 16, 2001
38

2
3

11
8

22
19

25
25

31
10
1

TO DETERMINE ROTATION OF REEL

Always specify SERIAL NUMBER &
MODEL NUMBER when ordering parts.
STANDARD
REVERSE
ROTATION
ROTATION
Cable is payed out and retracted as shown
when viewing reel from spring motor side.

ELECTRICAL CONNECTIONS

SM-21 GEAR DRIVE ELECTRIC CABLE REEL REPLACEMENT PARTS LIST
For SM-21 Gear Drive Electric Cable Reels manufactured after April 16, 2001
NOTE: Applicable mounting hardware included with each kit.

ITEM

KIT NO.

DESCRIPTION

QTY.

ITEM

KIT NO.

1
2
3
4
5

015899
015920
047565
012137
118322

Main Frame and Gear Case Assembly
Vertical Frame
Main Shaft
Drive Pin
Retaining Ring

1
1
1
1
2

016516

Bearing Kit - 2"" Bore
(Includes mounting hardware)

016517

Bearing Kit - 1.75"" Bore
(Includes mounting hardware)

016518

Bearing Kit - 1.25"" Bore
(Includes mounting hardware)

9
10

016519
015944

Drive Stud Bracket Kit
Stub Shaft, Drum Gear

1
1

04756601

Spool Assembly - 8"" Dia. Wrapper
(Includes two spool disks, wrapper segments & hardware)

11
11
11
11
11
11
11
11
11
12
12
12
12
12
12
12
12
12
12
12
12
12
12
13
13
13
13
13
13
13
13

04756602
04756603
04756604
04756605
04756606
04756607
04756608
04756609
04756610
04169201
04169202
04169203
04169204
04169205
04169206
04169207
04169208
04169209
04169210
04169211
04169212
04169213
04169214
012459
012460
012461
012462
012463
012464
012465
012466

Spool Assembly - 9" Dia. Wrapper
Spool Assembly - 10" Dia. Wrapper
Spool Assembly - 11" Dia. Wrapper
Spool Assembly - 12" Dia. Wrapper
Spool Assembly - 13" Dia. Wrapper
Spool Assembly - 14" Dia. Wrapper
Spool Assembly - 15" Dia. Wrapper
Spool Assembly - 16" Dia. Wrapper
Spool Assembly - 17" Dia. Wrapper
Cable Clamp Kit, 0.68 Dia. Cable
Cable Clamp Kit, 0.75 Dia. Cable
Cable Clamp Kit, 0.81 Dia. Cable
Cable Clamp Kit, 0.87 Dia. Cable
Cable Clamp Kit, 0.94 Dia. Cable
Cable Clamp Kit, 1.00 Dia. Cable
Cable Clamp Kit, 1.06 Dia. Cable
Cable Clamp Kit, 1.12 Dia. Cable
Cable Clamp Kit, 1.18 Dia. Cable
Cable Clamp Kit, 1.25 Dia. Cable
Cable Clamp Kit, 1.31 Dia. Cable
Cable Clamp Kit, 1.38 Dia. Cable
Cable Clamp Kit, 1.43 Dia. Cable
Cable Clamp Kit, 1.50 Dia. Cable
Cable Connector, 0.38-0.50 Dia. Cable
Cable Connector, 0.50-0.62 Dia. Cable
Cable Connector, 0.62-0.75 Dia. Cable
Cable Connector, 0.75-0.88 Dia. Cable
Cable Connector, 0.88-1.00 Dia. Cable
Cable Connector, 1.00-1.12 Dia. Cable
Cable Connector, 1.12-1.25 Dia. Cable
Cable Connector, 1.25-1.38 Dia. Cable

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19

012285
012286
012287
012288
012289
012290
012291
012292
012293
012298
012299
012300
037194
037294
037295
013756
016197
013757

Collector Assembly, 2 Pole, 35 Amp
Collector Assembly, 3 Pole, 35 Amp
Collector Assembly, 4 Pole, 35 Amp
Collector Assembly, 6 Pole, 35 Amp
Collector Assembly, 8 Pole, 35 Amp
Collector Assembly, 10 Pole, 35 Amp
Collector Assembly, 12 Pole, 35 Amp
Collector Assembly, 14 Pole, 35 Amp
Collector Assembly, 16 Pole, 35 Amp
Collector Assembly, 2 Pole, 75 Amp
Collector Assembly, 3 Pole, 75 Amp
Collector Assembly, 4 Pole, 75 Amp
Collector Assembly, 2 Pole, 125 Amp
Collector Assembly, 3 Pole, 125 Amp
Collector Assembly, 4 Pole, 125 Amp
Collector Assembly, 2 Pole, 200 Amp
Collector Assembly, 3 Pole, 200 Amp
Collector Assembly, 4 Pole, 200 Amp

012440

Brush Kit (35 Amp)
(Each kit includes 4 brushes, and 4 fingers)

20
20

012441
012443

Brush Kit (75 Amp)
Brush Kit (125 Amp / 200 Amp)

AR
AR

03742101

Collector Cover Kit (9.75"" long)
(Includes seal ring)

21
21
21
22
23
24

03742102
03742103
03742104
016213
015936
015937

016525

012467

Cable Connector, 1.38-1.50 Dia. Cable

016520

Spring Motor Kit, Standard Rotation-100
(Includes snap ring, two pawls, two springs, hub cover, and
gasket)

016521

Spring Motor Kit, Reverse Rotation-100

012427

Pawl Kit - 100 Spring
(Includes two pawls & two springs)

016522

Spring Mounting Kit
(Includes four extension studs)

17
18

106873
032804

Collector Drive Access Plug
Ratchet Spring Adjustment Wrench

1
1

NOTE: Please consult factory for optional accessories, roller guides,
ratchet lock and limit switch.

DESCRIPTION

QTY.
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

Collector Cover Kit (12.75" long)
Collector Cover Kit (14.75" long)
Collector Cover Kit (19.25" long)
Seal Ring (only)
Gear Detensioner Cover
Gear Detensioner Cover Gasket
Gear Detensioner Cover Kit
(Includes washers, pads and nut)

1
1
1
1
1
1
1

Gear Access Cover Kit
(Includes cover and gasket)

Spring Shaft, Gear, Std. Rot. (1001)
Spring Shaft, Gear, Rev. Rot. (1001)
Spring Shaft, Gear, Std. Rot. (1002)
Spring Shaft, Gear, Rev. Rot. (1002)
Spring Shaft, Gear, Std. Rot. (1003)
Spring Shaft, Gear, Rev. Rot. (1003)
Spring Shaft, Gear, Std. Rot. (1004)
Spring Shaft, Gear, Rev. Rot. (1004)

1
1
1
1
1
1
1
1
1

016527

27
27
27
27
27
27
27
27

015945
01594501
015946
01594601
015947
01594701
015948
01594801

016529

Collector Entrance Kit
(Includes wiring box, cover and gasket)

016202

Gear Kit, Ratio 'M'
(Includes one drum gear, and two spring gears)

29
29
29
29
29
29
29
29
29
30
31
32
33
34
35
36
37

016203
016204
016205
016206
016207
016208
016209
016210
016211
015958
015957
016234
015955
101377
047563
101030
015925

Gear Kit, Ratio 'N'
Gear Kit, Ratio 'P'
Gear Kit, Ratio 'Q'
Gear Kit, Ratio 'R'
Gear Kit, Ratio 'S'
Gear Kit, Ratio 'T'
Gear Kit, Ratio 'V'
Gear Kit, Ratio 'W'
Gear Kit, Ratio 'Y'
Lube Tube, 2" Bore Bearing
Lube Tube, Gearbox
Lube Tube, 1.25" Bore Bearing
Male Connector, 1/4" Tube x 1/8 NPT
Grease Fitting
Hex Hd. Cap Screw, .75-10 x 4.00
Hex Nut, .75-10
Hoop Brace

1
1
1
1
1
1
1
1
1
1
1
1
5
3
1
1
2

021762

Hub Lock Pin Kit (Includes 2 pins)

MODEL NUMBER EXPLANATION
SPRING
REEL

FRAME
SERIES

SPRING
SERIES

NO. OF
SPRINGS

NO. OF
POLES

AMPACITY

CORE
DIAMETER

GEAR
RATIO

PRETENSION
TURNS

100

-2

-V-

* INDICATES REVERSE ROTATION
NO LETTER INDICATES STANDARD ROTATION

AMPACITY CODE

MAX

CODE

7
12
20

AMPS
35
75
125
200

INSTALLATION
Use the following procedure to relieve spring tension prior to
cable or spring replacement.

! WARNING

DO NOT insert hands into gearbox until springs are fully
detensioned. Doing so could lead to serious injury.
1. Cycle reel thru normal operating cycle and stop when
maximum amount of cable is wound onto reel spool.
2. Set spool lock to prevent spool from turning.
3. Remove access cover from top of gearbox.
4. Using open end wrench, loosen large hex nut slowly to allow
springs to unwind. Fully loosen nut further with wrench until
springs are completely unwound.
5. Repair reel or replace springs or cable as necessary.
6. Retighten nut until definite resistance is felt and spring
washers are full compressed (flat). Replace cover.
NOTE: If hex nut is not adequately tightened, spring unwinding
can occur during reel operation.
7. Pretension reel. See INSTALLATION section, front page.
CABLE REMOVAL
Use the following procedure to remove worn or damaged cable
from reel prior to installation of new cable.

! CAUTION
Failure to relieve all spring tension prior to removing
cable could result in damage to equipment or
personal injury. Follow instructions carefully.
1. Move machine serviced by reel to a position closest to reel.
Springs will still be under pre-tension at this point.
2. Turn off all electric power.
3. Using spool lock. lock spool to prevent turning.
4. Disconnect cable from machine junction box.
5. Detension springs as described above.
6. Remove cable from spool. Loosen cable clamp and water-tight
connector and disconnect conductors from slip ring.

Printed in USA

CABLE INSTALLATION
Use the following procedure to replace cable or if reel was
ordered without cable. Refer to CABLE INSTALLATION
REFERENCE DRAWING, below.
1. Unspool new cable from shipping spool and lay out to
eliminate twist.
NOTE: This step is not essential, but will aid in winding
operation of the reel and prolong cable life.
2. Feed one end of the cable through water-tight connector on
the main shaft inside the spool and into the slip ring side (See
drawing below).
NOTE: This may require that jacket of cable be stripped to
allow conductors to pass through shaft.
3. Connect individual conductors to appropriate rings on
collector using crimp fitting or similar connection method.
4. Tighten water-tight connector and cable clamp in slot on spool
disk. Do not over-tighten.
5. Wind the cable onto the reel spool by hand rotating spool in
direction it turns free of spring tension.
6. Connect free end of cable to machine junction box.
7. Pretension reel and complete reel installation as previously
described.
COLLECTOR REPLACEMENT
1. Turn off all power to reel.
2. Remove collector cover and gasket.
3. Disconnect electric leads to and from collector.
4. Remove drive stud bolt from bearing housing.
5. Remove button plug from hole in side of housing. Insert long
1/8" Allen wrench through hole and loosen two set screws in
collector locking collar. Set screws are at 90° to one another.
NOTE: Older reels may have lock screws which must be
removed to reach set screws holding collector to shaft.
6. Slide collector off shaft.
7. Install new collector by reversing

GLEASON REEL CORP.
P.O. Box 26 • 600 South Clark St.
Mayville, WI 53050
Phone 920-387-4120 • Fax 920-387-4189

Bulletin No. 049661.b

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Hubbell Gear Drive Electric Cable Reels Sm21 Users Manual

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