Instruction Manual DODGE® TORQUE-ARM™ Speed Reducers

Taper Bushed WSCXT 115 & 125

These instructions must be read thoroughly before installation or operation. This instruction manual was accurate at the time of
printing. Please see baldor.com for updated instruction manuals.

Note! The manufacturer of these products, Baldor Electric Company, became ABB Motors and Mechanical Inc. on March
1, 2018. Nameplates, Declaration of Conformity and other collateral material may contain the company name of Baldor
Electric Company and the brand names of Baldor-Dodge and Baldor-Reliance until such time as all materials have been
updated to reflect our new corporate identity.

WARNING: To ensure the drive is not unexpectedly

started, turn off and lock-out or tag power source before HORIZONTAL APPLICATIONS ▲
proceeding. Failure to observe these precautions could B B
B B
result in bodily injury.
P P P
WARNING: All products over 25 kg (55 lbs) are noted on the P
L
L
L L
shipping package. Proper lifting practices are required for
these products. D D
D D
INSTALLATION A-POSITION B-POSITION C-POSITION D-POSITION

1. Use eyebolts to lift reducer.

VERTICAL MOUNT
2. Determine the running positions of the reducer. (See Fig. 1)
B B
NOTE: The reducer is supplied with either 4 or 7 plugs; L L
P P
4 around the sides for horizontal installations and 1 D
D
on each face for vertical installations. These plugs
must be arranged relative to the running positions as E POSITION F POSITION
follows:
B = BREATHER D = DRAIN L = LEVEL P = PLUG
Horizontal Installations—Install the magnetic drain plug
in the hole closest to the bottom of the reducer. Install filter/ Figure 2 - Mounting Positions
breather in topmost hole. Of the 3 remaining plugs on the
sides of the reducer, the lowest one is the minimum oil level
The running position of the reducer in a horizontal application
is not limited to the four positions shown in Figure 1. However,
plug.
if running position is over 20º either way from sketches, the oil
Vertical Installations—Install the filler/ventilation plug in level plug cannot be safely used to check the oil level, unless
the hole provided in the top face of the reducer housing. during the checking the torque arm is disconnected and the
Use the hole in the bottom face for the magnetic drain plug. reducer is swung to within 20º in positions “B” and “D” or 5º in
Of the 5 remaining holes on the sides of the reducer, use positions “A” and “C” of the positions shown in Figure 1.
a plug in the upper housing half for the minimum oil level
plug. Because of the many possible positions of the reducer, it may
WARNING: Because of the possible danger to person(s) be necessary or desirable to make special adapations using the
or property from accidents which may result from the lubrication fitting holes furnished along with other standard pipe
improper use of products, it is important that correct fittings, stand pipes and oil level gages as required.
procedures be followed. Products must be used in
accordance with the engineering information specified 3. Mount reducer on driven shaft as follows:
in the catalog. Proper installation, maintenance and For Taper Bushed: Mount reducer on driven shaft per
operation procedures must be observed. The instructions instructions for tapered bushings.
in the instruction manuals must be followed. Inspections 4. Install sheave on input shaft as close to reducer as
should be made as necessary to assure safe operation practical. (See Fig. 2.)
under prevailing conditions. Proper guards and other
Keep
suitable safety devices or procedures as may be desirable Close
or as may be specified in safety codes should be provided,
and are neither provided by ABB nor are the responsibility
of ABB. This unit and its associated equipment must be Driven
installed, adjusted and maintained by qualified personnel Shaft Input
who are familiar with the construction and operation of Shaft
all equipment in the system and the potential hazards Keep
involved. When risk to persons or property may be Close
involved, a holding device must be an integral part of the
driven equipment beyond the speed reducer output shaft. Figure 2 - Installation of Sheave
1
5. Install motor and V-belt drive so belt will approximately be LUBRICATION
at right angles to the center line between driven and input
shaft. (See Fig. 3.) This will permit tightening the V-belt
Because reducer is shipped without oil, it is necessary to add
with the torque arm screw. (See Fig. 4.) Make sure that
the proper amount of oil before running. Use a high grade
there is sufficient take-up in the turnbuckle for belt tension
petroleum-base, rust and oxidation inhibited (R&O) gear oil – see
adjustment when using V-belt drive
tables. Follow instructions on reducer nameplate, warning tags
and in the installation manual.
Right Angle
or may vary
30˚ in tension Under average industrial operating conditions, the lubricant
20˚ in compression should be changed every 2500 hours of operation or every 6
months, whichever occurs first. Drain reducer and flush with
V– Belt
Drive V– Belt Drive may kerosene, clean magnetic drain plug and refill to proper level
be located to the with new lubricant.
right if desired
Figure 3 - Installation of Motor and V-Belt Drive CAUTION: Extreme pressure (EP) lubricants are not
recommended for average operating conditions. Failure to
Right Angle observe these precautions could result in bodily injury.
or may vary
30˚ in tension CAUTION: Too much oil will cause overheating and too little
20˚ in compression will result in gear failure. Check oil level regularly. Failure to
Torque Arm and observe this precaution could result in bodily injury.
Belt Take–up Torque Arm may be
located to the right Under extreme operating conditions, such as rapid rise and fall
if desired
of temperature, dust, dirt, chemical particles, chemical fumes, or
Figure 4 - Tighten Belt with Torque Arm Screw oil sump temperatures above 200ºF., the oil should be changed
every 1 to 3 months depending on severity of conditions.
6. Install torque arm and adaptor plates using the long reducer
bolts. The bolts may be shifted to any of the holes on the
CAUTION: Do not use EP oils or oils containing slippery
input end of the reducer. Fig. 3
additives such as graphite or molybdenum disulphide in
7. Install torque arm fulcrum on a rigid support so that the
the reducer when backstop is used. These additives will
torque arm will be approximately at right angles to the
destroy sprag action.
center line through the driven shaft and the torque arm
anchor

CAUTION: Unit is shipped without oil. Add proper amount

of recommended lubricant before operating. Failure to
observe this precaution could result in damage to, or
destruction of, the equipment.
8. Fill gear reducer with recommended lubricant.

Table 1 - Oil Levels

Volume of Oil Required to Fill Reducer to Oil Level Plug

Reducer ① Position A ① Position B ① Position C ① Position D ① Position E ① Position F

Size
Fluid ② Fluid ② Fluid ② Fluid ② Fluid ② Fluid ②
Ounces Quarts Liters Ounces Quantis Liters Ounces Quantis Liters Ounces Quantis Liters Ounces Quantis Liters Ounces Quantis Liters
(Approx) (Approx) (Approx) (Approx) (Approx) (Approx) (Approx) (Approx) (Approx) (Approx) (Approx) (Approx) (Approx) (Approx) (Approx) (Approx) (Approx) (Approx)

WSCXT115
16 1/2 .48 16 1/2 .48 20 5/8 .59 24 3/4 .71 32 1 .95 32 1 .95
WSCXT125
① Refer to Fig. 1 on page 2 for mounting positions.
② U.S. Measure: 1 quart = 32 fluid ounces = .94646 liters.
Note: If reducer position is to vary from those shown in Figure 1, either more or less oil may be required. Consult Mechanical Power Transmission Support.

2
 Table 2 - Minimum Oil Recommendations to Average Operating Conditions
Lubrication Recommendations – ISO Grades for Ambient Temperatures of Lubrication Recommendations – ISO Grades for Ambient Temperatures of
15º to 60º 50º to 125º
Output Reducer Size Output Reducer Size
RPM RPM
1 2 3 4 5 6 7 8 9 10 12 13 14 15 1 2 3 4 5 6 7 8 9 10 12 13 14 15

301-400 220 220 150 150 150 150 150 150 150 150 150 150 150 150 301- 320 320 220 220 220 220 220 220 220 220 220 220 220 220
400
201-300 220 220 150 150 150 150 150 150 150 150 150 150 150 150 201- 320 320 220 220 220 220 220 220 220 220 220 220 220 220
300
151-200 220 220 150 150 150 150 150 150 150 150 150 150 150 150 151-200 320 320 220 220 220 220 220 220 220 220 220 220 220 220
126-150 220 220 220 150 150 150 150 150 150 150 150 150 150 150 126-150 320 320 320 220 220 220 220 220 220 220 220 220 220 220
101-125 220 220 220 220 150 150 150 150 150 150 150 150 150 150 101-125 320 320 320 320 220 220 220 220 220 220 220 220 220 220
81-100 220 220 220 220 220 150 150 150 150 150 150 150 150 150 81-100 320 320 320 320 320 220 220 220 220 220 220 220 220 220
41-80 220 220 220 220 220 150 150 150 150 150 150 150 150 150 41-80 320 320 320 320 320 220 220 220 220 220 220 220 220 220
11-40 220 220 220 220 220 220 220 220 220 220 15 150 150 150 11-40 320 320 320 320 320 320 320 320 320 320 220 220 220 220
1-10 220 220 220 220 220 220 220 220 220 220 220 220 220 220 1-10 320 320 320 320 320 320 320 320 320 320 320 320 320 320
Below – 23ºF call application engineering.
20ºF to -22ºF use Mobil SHC 627.
Above 125ºF use Mobil SHC 634.

NOTES:
• Pour point of lubricant selected should be at least 10ºF lower than expected minimum ambient starting temperature.
• Extreme pressure (EP) lubricants are not recommended for average operating conditions
• Special lubricants may be required for food and drug industry applications where contact with the product being manufactured may occur. Consult a lubrication
manufacturer's representative for recommendation.
• Do not use oils containing slippery additives such as graphite or molybdenum disulphide in the reducer when backstop is used. These additives will destroy sprag action.

MOTOR MOUNTS REPLACEMENT OF PARTS

The motor mount must be installed on output end of reducer as Using tools normally found in a maintenance department, a
shown in Figure 5. Dodge Torque-Arm Speed Reducer can be disassembled and
reassembled by careful attention to the instructions of following.
Remove two housing bolts on output end of reducer. Place the Cleanliness is very important to prevent the introduction of dirt
motor mount in position and install the longer housing bolts into the bearings and other parts of the reducer. A tank of clean
supplied with the motor mount. Tighten bolts to torque specified solvent, an arbor press, and equipment for heating bearings and
in Table 6. gears, should be available for shrinking these parts on shafts.

Install motor, drive sheave and drive sheave so that driven The oil seals are of the rubbing type and considerable care
sheave is as close to the reducer housing as practical. Install should be used during disassembly and reassembly to avoid
V-belt and tension with the four adjusting screws provided on damage to the surface which the seals rub on.
T-A M motor mount. Check all bolts to see that they are securely The keyseat in the input shaft as well as any sharp edges on the
tightened. output hub should be covered with scotch tape or paper before
disassembly or reassembly. Also be careful to remove any burrs
or nicks on surfaces of the input shaft or output hub before
disassembly or reassembly.
ORDERING PARTS:
When ordering parts for reducer specify reducer size number,
reducer serial number, part name, part number and quantity. It
is strongly recommended that when a pinion or gear is replaced,
the mating gear or pinion be replaced also.
If the large gear on the output hub must be replaced it is
recommended that an output hub assembly of a gear assembled
on a hub be ordered to secure undamaged surfaces on the
output hub where the oil seals rub.
However, if it is desired to use the old output hub, press the gear
and bearing off and examine the rubbing surface under the oil
seal carefully for possible scratching or other damage resulting
from the pressing operation. To prevent oil leakage at the shaft
Figure 5 - Motor Mount on Output End of Reducer oil seals the smooth surface of the output hub must not be
NOTE: Belt guard removed for photographic purposes. damaged.
If any parts must be pressed from a shaft or from the output
WARNING: Do not operate if belt guard is not in place. hub, this should be done before ordering parts to make sure that
none of the bearings or other parts are damaged in removal. Do
not press against outer race of any bearing. Because old shaft
oil seals may be damaged in disassembly it is advisable to order
replacements for these parts.

3
REMOVING REDUCER FROM SHAFT: TAPER 9. Install oil seals. Extreme care must be observed when
BUSHED— installing seals on input shaft and output hub to avoid
contact with any sharp edges. This danger of damage and
1. Remove bushing screws. consequent oil leakage can be decreased by covering all
2. Place the screws in the threaded holes provided in the sharp edges with adhesive tape or paper before installing
bushing flanges. Tighten the screws alternately and seals. Chamfer or deburr housing bore if end of bore is sharp
evenly until the bushings are free on the shaft. For ease of or rough. Fill cavity between lips of seal with grease. Seals
tightening screws, make sure screw threads and threaded should be pressed or tapped evenly into place with a soft
holes in bushing flanges are clean. hammer (rawhide, not lead hammer) applying force only
3. Remove the outside bushing, the reducer and then the on the outer edge of the seals. A slight oil leakage may be
inboard bushing. evident at the seals during initial running in, but will disappear
unless seals have been damaged.
DISASSEMBLY:
Table 3 - Manufacturer’s Part Number For
1. Position reducer on its side and remove all bolts. Gently tap Replacement Output Hub Bearings
the output hub and input shaft with a soft hammer (rawhide,
not a lead hammer) to separate the housing halves. Open TORQUE-ARM Output Hub Bearing
housing evenly to prevent damage to the parts inside. Reducer
Drive DODGE Part Number
2. Lift shaft, gear, and bearing assemblies from housing.
3. Remove seals from housing. Size Cone Cup
WSCXT 115
REASSEMBLY: 402246 (JLM506849) 403149 (JLM506810)
WSCXT 125

1. Output Hub Assembly: Heat gear to 325ºF to 350ºF to shrink

onto hub. Heat bearings to 270ºF to 290ºF to shrink onto hub.
Any injury to the hub surfaces where the oil seals rub will Table 4 – Manufacturers’ Part Numbers For
cause leakage making it necessary to use a new hub. Replacement Countershaft Bearings
2. Countershaft Assembly: Shaft and pinion are integral. Press
TORQUE-ARM Countershaft Bearing Countershaft Bearing
gear and bearings on shaft. Press against inner (not outer)
Reducer Input Side Adapter Side
race of bearings.
3. Input Shaft Assembly: Shaft and pinion are integral. Press Drive
DODGE DODGE
bearings on shaft. Press against inner (not outer) race of Size Part No. Part No.
Part No. Part No.
bearings.
WSCXT 115
4. Drive the two dowel pins into place in the right hand housing 424006 304SG 424006 304SG
WSCXT 125
half. Position right half of housing (as shown in drawing) on
blocks to allow clearance for protruding end of output hub.
5. Mesh output hub and countershaft together and place in
housing half. Place input shaft assembly in housing half. Tap Table 5 – Manufacturers’ Part Numbers For
lightly with a soft hammer (rawhide, not lead hammer) until Replacement Input Shaft Bearings
bearings are properly seated in housing. Make sure that the Input Shaft Bearing Input Shaft Bearing
snap rings on the O.D. of the bearings come into contact with TORQUE-
ARM Reducer Input Side Adapter Side
the housing. Drive
6. Clean housing flange surfaces on both halves, making sure DODGE DODGE
Size Part No. Part No.
Part No. Part No.
not to nick or scratch flange face. Place a new bead of gasket
eliminator on flange face and spread evenly over the entire WSCXT 115
424112 205SG 424111 204MG
flange leaving no bare spots. WSCXT 125
7. Place output hub bearing cup in other housing half. Make
sure cup is properly seated in housing. Place housing half in
position over dowel pins and tap with a soft hammer (rawhide, Table 6 – Bolt Tightening Torque Values
not lead hammer) until housing halves are together. Install
housing bolts and tighten evenly. The final wrench torque for Output
housing bolts is 360 lb.-ins. TORQUE-ARM Shaft Hub
Housing Adapter
Reducer Retainer Seal
8. Install the output hub seal carrier and the shims removed at Bolts Bolts
Drive Bolt Carrier
disassembly. Tighten carrier cap screws while rotating the (in.-lbs.) (in.-lbs.)
Size (in.-lbs.) Bolts
output hub to make sure the bearings do not bind. If the (in.-lbs.)
bearings start to bind, add more shims. Torque the carrier
WSCXT 115
bolts to the value shown in table 3. Attach an indicator to the 360 360 1800 200
WSCXT 125
housing and set the gage on the top end of the output hub.
Insert a pry bar under the other end of the hub and force it
upward. The axial end play of the output hub will be given by
the indicator reading. Add or remove shim stock to attain a
reading of from .001” to .003”. Remove seal carrier and place
a 1/8” diameter bead of Dow Corning RTV732 sealant on the
face around the I.D. of the last shim (sealant is to be between
shim and reducer housing). Reinstall output hub seal carrier
and tighten carrier screws to torque shown in Table 6.

4
Replacement Parts WSCXT 115 & 125

5
 Replacement Parts WSCXT 115 & 125
WSCXT115 & WSCXT125
Reference Description No. Req’d. Part No.
HOUSING 351225
3 Air Vent 1 A55233
4 Housing Bolt ⑦ 411418
6 Lockwasher ⑦ 419011
① Washer 1 419092
10 Hex Nut ⑦ 407087
12 Dowel Pin 2 420092
16 Pipe Plug 5 430031
18 Magnetic Drain Plug 1 430060
20 Countershaft Bearing Cover – Input Side 1 242224
22 Countershaft Bearing Cover – Adapter Side Input 1 242224
24 Shaft Bearing Cover – Adapter Side 1 361062
32 Input Shaft 15:1 Ratio 1 241302
Input Shaft Key 25:1 Ratio 1 241200
② 1 443008
34* Input Shaft Seal 1 241457
36* Input Shaft Bearing – Input Side 1 424112
38* Input Shaft Bearing – Adapter Side 1 424111
COUNTERSHAFT 15:1 Ratio 1 392090
ASSEMBLY⑧ 25:1 Ratio 1 392091
42 ③ Countershaft and Pinion 1 241216
44* ③ First Reduction 15:1 Ratio 1 241170
Gear 25:1 Ratio 1 241171
46* ③ Gear Key 1 241309
48* Countershaft Bearing—Input Side ④ 1 424006
50* Countershaft Bearing—Adapter Side ④ 1 424006
OUTPUT HUB ASSEMBLY② 1 391029
54* ③ Output Hub 1 241233
56* ③ Output Hub Gear 1 241007
58* ③ Output Hub Gear Key 1 241217
60* ③ Snap Ring 1 421013
62 Output Hub Seal Carrier 1 351114
64 Carrier Screw 6 411405
66 Lockwasher 6 419010
68* Output Hub Seal 2 351111
70* Output Hub Bearing – Cone ④ 2 402246
72* Output Hub Bearing – Cup ④ 2 403149
74* Output Hub Shim Pack 1 Set ⑤ 391056
① .002" Thick ⑥ 427424
① .005" Thick ⑥ 427425
① .010" Thick ⑥ 427426
① .025" Thick ⑥ 427427
75 Bushing Back-Up Plate 2 241266
76 Retainer Ring 2 421111
77 Adapter, Housing Bolts 2 411420
TORQUE ARM ASSEMBLY② 1 241097
80 ③ Rod End 1 241245
82 ③ Hex Nut 1 407093
84 ③ Turnbuckle 1 241246
86 ③ Extension 1 241247
88 ③ L.H. Hex Nut 1 407242
90 ③ Fulcrum 1 241249
92 ③ Fulcrum Screw 1 411456
94 ③ Hex Nut 1 407091
ADAPTER ASSEMBLY② 1 259151
96 ③ R.H. Adapter Plate 1 241242
98 ③ L.H. Adapter Plate 1 241241
100 ③ Adapter Bushing 1 242243
102 ③ Adapter Bolt 1 411412
104 ③ Lockwasher 1 419011
106 ③ Hex Nut 1 407067
①Not shown on drawing.
② Includes parts listed immediately below. Housing Assembly also includes two-piece housing and adapter.
③These parts make up the assemblies under which they are listed. Assembly also includes two-piece
housing.
④ For manufacturer’s part number see tables 3, 4 and 5 on page 5.
⑤ One set consists of one each of the shims listed immediately below.
⑥ See last paragraph under “ORDERING PARTS.”
⑦ 6 required for SCXT1 Series.
6
 OIL VISCOSITY EQUIVALENCY CHART

KINEMATIC SAYBOLT
VISCOSITIES VISCOSITIES
SAE
cSt/ cSt/ ISO AGMA GRADES SUS/ SUS/
40°C 100°C VG GRADES GEAR OILS 100°F 210°F
2000 10,000
70
8000 300
60 1500
6000
1000 50 1000 8A 5000
250
800 4000 200
40 680 8
600 3000

500 30 140
460 7
2000
400
320 6 1500
300 20
100
220 5 1000 90
200 90
800 80
150 4
600 70
100 100 3 85W
10 500
80 9 60
400
8 68 2 80W 55
60 7 300
50
50 6 46 1
200
40 75W
45
32
30 5 150

VISCOSITIES CAN BE
22
20 RELATED HORIZONTALLY 100 40
4
ONLY.
15 VISCOSITIES BASED ON 80
96 VI SINGLE GRADE
70
OILS.
10 ISO ARE SPECIFIED AT
10 60
40°C.
8 AGMA ARE SPECIFIED AT
7 50
40°C.
6 SAE 75W, 80W, AND 85W
5 5 SPECIFIED AT LOW
TEMPERATURE. EQUIVALENT
4 40
VISCOSITIES FOR 100°F
AND 200°F ARE SHOWN.
3 3 SAE 90 TO 250 SPECIFIED
AT 100°C. 35

2 2
32

7
—
ABB Motors and Mechanical Inc.
5711 R. S. Boreham Jr. Street
Fort Smith, AR 72901
Ph: 1.479.646.4711

Mechanical Power Transmission Support *1677-0918*

Ph: 1.864.297.4800

new.abb.com/mechanical-power-transmission
baldor.com

© ABB Motors and Mechanical Inc. All Rights Reserved. Printed in USA.
MN1677 (Replaces 499938) 09/18 Printshop 200