ABB TA0107L, Instruction Manual

10

SPACER (IF APPLICABLE)

BACKSTOP SHAFT

COVER GASKET

REDUCER WITH

BACKSTOP INSTALLED

REDUCER WITHOUT

BACKSTOP INSTALLED

ARROW ON HUB OF INSTALLED

BACKSTOP MUST MATCH

DIRECTION OF DESIRED

SHAFT ROTATION

RETAINING

RING

BACKSTOP

FASTENERS

BACKSTOP 

KEY

OUTER RACE

INNER RACE

BACKSTOP

SHAFT COVER

Figure 12 - Backstop Assembly

MOTOR MOUNTS

Motor Mount Assembly:

JAM

NUTS

TOP PLATE

ADJUSTING

STUDS

BOTTOM

PLATE

BOLTS

UPRIGHTS

BOTTOM

PLATE

Figure 13 – Motor Mount Components

Refer to Figure 12 for descriptions of component parts. Using 
the hardware provided, assemble uprights (the angled parts 
to which the reducer is fastened) to the u-shaped, rectangular 
bottom plate. Notice that there are eight slots cut into the plate. 
If the reducer is to be mounted in Positions A or C, as illustrated 
in Figure 8, assemble the uprights in the outermost slots. If 
the reducer is to be mounted in Positions B or D, assemble 
the uprights in the innermost slots. The bottom plate may be 
mounted with the vertical flanges up or down (as shown in 
Figure 11). Snug bolts only, do not torque bolts at this time.

Fasten long threaded studs to the four corners of bottom plate 
using jam nuts, one on each side of the plate. Securely tighten 
these nuts, as they will not require any further adjustment. Add  
ne additional jam nut to each stud and thread approximately 
to the middle of the stud. Assemble top motor plate (the flat 
rectangular plate with many holes) on top of the jam nuts.
Assemble the remaining jam nuts on studs to secure top motor 
plate. Do not fully tighten these nuts yet.  

The motor mount may be installed in any of the four positions 
(A, B, C or D) and in any of the mounting levels (M1, M2, M3 or 
M4) shown in Figure 12. Note that the motor mount uprights 
attach to the input side of the reducer when mounted in either 
the “B” or “D” positions.

Motor Mount Installation:

WARNING: To ensure that drive is not unexpectedly 

started, turn off and lock out or tag power source before 

proceeding. Remove all external loads from drive before 

removing or servicing drive or accessories. Failure to 

observe these precautions could result in bodily injury.

Remove four or six (as required) housing bolts from the reducer. 
Place the motor mount in position and reinstall the bolts 
through the motor mount uprights and reducer housing. Where 
reducer is shaft mounted in positions A or C, the torque-arm 
adapter plate must be mounted between the reducer housing 
and the motor mount upright. Tighten bolts to the torque 
specified in Table 12.

Mount the motor onto the top plate and bolt securely. Install the 
motor sheave and reducer sheave as close to the motor and 
reducer housings as practical. Loosen the bottom plate bolts 
and slide the motor and mounting plate to accurately align the 
motor and reducer sheave. Securely tighten the bottom plate 
bolts. Install the required number of V-belts and tension belts 
by alternately adjusting the jam nuts on the four adjusting studs 
provided on the motor mount. Check all bolts to see that they 
are securely tightened. Verify that the V-belt drive is properly 
aligned before operating the reducer.