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If mounting the Torque-Arm reducer on an inclined angle, 
consult your local representative for proper oil level.
Mount reducer on driven shaft as follows:

For Straight Bore:

 Mount reducer on driven shaft as close to 

bearing as practical. If bushings are used, assemble bushings 
in reducer first. A set of bushings for one reducer consists of 
one keyseated bushing and one plain bushing. Extra length 
setscrews are furnished with the reducer. Driven shaft should 
extend through full length of speed reducer. Tighten both 
setscrews in each collar.

For Taper Bushed:

 Mount reducer on driven shaft per 

instruction sheet packed with tapered bushings.

Install sheave on input shaft as close to reducer as practical 
(Figure 2).

 

KEEP

CLOSE

 

KEEP

CLOSE

DRIVEN
 SHAFT

INPUT
SHAFT

Figure 2 - Reducer and Sheave Installation

3.  Install motor and V-belt drive so belt pull will approximately 

be at right angles to the center line between driven and 
input shaft (Figure 3). This will permit tightening the V-belt 
drive with the Torque-Arm.

RIGHT ANGLE OR
    MAY VARY 30°

V-BELT
 DRIVE

    V-BELT
  DRIVE MAY
 BE LOCATED
TO THE RIGHT
  IF DESIRED

Figure 3 - Angle of V-Drive

4.  Install Torque-Arm and adapter plates using the long 

reducer bolts. The bolts may be shifted to any of the holes 
on the input end of the reducer.

5.  Install Torque-Arm fulcrum on a rigid support so that the 

Torque-Arm will be approximately at right angles (±30º) to 
the center line through the driven shaft and the Torque-Arm 
anchor screw (Figure 4). Make sure that there is sufficient 
take-up in the turnbuckle for belt tension adjustment when 
using V-belt drive

6. 

7. 

RIGHT ANGLE OR
 MAY VARY 20° IN
    TENSION OR
  COMPRESSION

TORQUE-ARM
   AND BELT
    TAKE-UP

   TORQUE-ARM
MAY BE LOCATED
   TO THE RIGHT
     IF DESIRED

Figure 4 - Angle of Torque-Arm

Lubrication

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.

 

Use a high grade petroleum base, rust and oxidation inhibited 
(R & 0) gear oil (Tables 1 and 2). Follow instructions on reducer 
nameplate, warning tags, and in this installation manual.

Under average industrial operating conditions, the lubricant 
should be changed every 2500 hours of operation or every 6 
months, whichever occurs first. Drain reducer and flush with 
kerosene, clean magnetic drain plug and refill to proper level 
with new lubricant.

CAUTION: Extreme pressure (EP) lubricants are not 

recommended for average operating conditions. Failure to 

observe these precautions could result in damage to, or 

destruction of, the equipment.

CAUTION: Too much oil win cause overheating and too 

little will result in gear failure. Check oil level regularly. 

Failure to observe these precautions could result in 

damage to, or destruction of, the equipment.

Under extreme operating conditions, such as rapid rise and 
fall of temperature, dust, dirt, chemical particles, chemical 
fumes, or oil sump temperatures above 200

º

F, the oil should 

be changed every 1 to 3 months depending on severity of 
conditions.

CAUTION: Do not use oils containing slippery additives 

such as graphite or molybdenum disulfide in the reducer 

when backstop is used. These additives will destroy sprag 

action. Failure to observe these precautions could result in 

damage to, or destruction of, the equipment.

Summary of Contents for Torque-Arm TXT805

Page 1: ...dated to reflect our new corporate identity arranged relative to the mounting positions as follows Horizontal Installations Install the magnetic drain plug in the hole closest to the bottom of the reducer Throw away the tape that covers the filter ventilation plug in shipment and install plug in topmost hole Of the 3 remaining plugs on the sides of the reducer the lowest one is the minimum oil lev...

Page 2: ...ion adjustment when using V belt drive 6 7 RIGHT ANGLE OR MAY VARY 20 IN TENSION OR COMPRESSION TORQUE ARM AND BELT TAKE UP TORQUE ARM MAY BE LOCATED TO THE RIGHT IF DESIRED Figure 4 Angle of Torque Arm Lubrication 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 equipm...

Page 3: ...25 F Torque Arm Reducer Size TXT805 TXT905 301 400 220 220 201 300 220 220 151 200 220 220 126 150 220 220 101 125 220 220 81 100 320 220 41 80 320 220 11 40 320 320 1 10 320 320 Table 2 Lubrication Recommendations ISO Grades Output RPM ISO Grades For Ambient Temperatures of 15 F to 60 F Torque Arm Reducer Size TXT805 TXT905 301 400 150 150 201 300 150 150 151 200 150 150 126 150 150 150 101 125 1...

Page 4: ...protect gear reducers during periods of extended storage Preparation 1 Drain oil from the unit Add a vapor phase corrosion inhibiting oil VCI 105 oil by Daubert Chemical Co in accordance with Table 3 2 Seal the unit airtight Replace the vent plug with a standard pipe plug and wire the vent to the unit 3 Cover all unpainted exterior parts with a waxy rust preventative compound that will keep oxygen...

Page 5: ...5 TXT905 66 Bushing Assembly 1 272048 2 15 16 Bore 1 272045 3 3 16 Bore 1 272032 272056 3 7 16 Bore 1 272033 272077 3 15 16 Bore 1 272034 272078 4 3 16 Bore 1 272035 272079 4 7 16 Bore 1 272080 4 15 16 Bore 68 Lockwasher 6 419013 419014 Key Bushing to Shaft 2 15 16 Bore 1 443247 3 3 16 Bore 1 443247 3 7 16 Bore 1 443171 443249 3 15 16 Bore 1 443173 272119 4 3 16 Bore 1 443174 272108 4 7 16 Bore 1 ...

Page 6: ...05 Straight Bore and Taper Bushed Speed Reducers NOTE The two digit numbers are for reference only Order parts by the six digit numbers in the Parts List Each six digit number is a complete identification of the part or assembly ...

Page 7: ...For ease of tightening screws make sure screw threads and threaded holes in bushing flanges are clean A tap can be used to clean out the threads Use caution to use the proper size tap to prevent damage to the threads 4 Remove the outside bushing the reducer and then the inboard bushing Disassembly 1 Drain all oil from the reducer 2 Position reducer on its side and remove all housing bolts Gently t...

Page 8: ...100 C cSt ISO VG AGMA GRADES GRADES GEAR OILS SUS 100 F SUS 210 F SAE KINEMATIC VISCOSITIES SAYBOLT VISCOSITIES 200 300 100 90 80 70 60 55 50 45 40 VISCOSITIES CAN BE RELATED HORIZONTALLY ONLY VISCOSITIES BASED ON 96 VI SINGLE GRADE OILS ISO ARE SPECIFIED AT 40 C AGMA ARE SPECIFIED AT 40 C SAE 75W 80W AND 85W SPECIFIED AT LOW TEMPERATURE EQUIVALENT VISCOSITIES FOR 100 F AND 200 F ARE SHOWN SAE 90 ...

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