Warner Electric Gen 2 Electro-Module EM-50, EM-100, EM-180 - Manual (Page 4)

4 Warner Electric • 800-825-9050 819-0529
Section A: Mounting a C-Faced Motor
(10-20, 10-20FBC, 10-40)
1. A hardened key is provided with the
mounting hardware for the (10) Module.
Insert this key onto the motor shaft
(staking the key is necessary).
2. Align the keyway in the bore of the (10)
Module to the key in the motor shaft and
slide the (10) Module onto the motor shaft.
The normal alignment of the module to the
motor will be with the wire exit upright
(12 O’Clock) position as shown in Figure 1.
Do not hammer or force the
module into position. To do so
may damage bearings or cause the friction
faces to shift out of alignment. Do not tighten
the set screws to the motor shaft at this time.
This will be done in a later step.
If anti-fretting lubricant is used
on the motor shaft for future ease of removal,
ensure that any excess is wiped off before
unit assembly to avoid lubricant
contaminating the clutch or brake friction
faces.
3. Align the pilot and the mounting holes of the
brake module (20 or 20FBC) or if clutch only
the module (40) to the pilot and mounting
holes of the clutch module (10). The wire
exit orientation should match. Secure the
modules to the motor with the four (4) long
mounting tie-bolts provided. These bolts
pass through the two modules and thread
into the motor C-face. Tighten the four (4)
bolts alternately to ensure even alignment
of the module. Tighten them to 30-35 foot
pounds, Figure 2.
Do not tighten the two (2) clutch
rotor set screws to the shaft before tightening
the four (4) module tie-bolts. This could cause
a preload on the pilot bearing resulting in
premature bearing failure.
4. Next, secure the clutch rotor and fan
assembly to the motor shaft by tightening the
two (2) setscrews as follows:
a) There are two (2) access slots on either
side of the Module (10). A long Allen
wrench can be used to tighten the two
setscrews (90% apart) which secure the
rotor and fan assembly to the motor
shaft.
b) Alternately align each setscrew with one
of the access slots by rotating the clutch
rotor and fan assembly through one of
the side vents with a small screw driver
taking care not to damage the fan (Figure
3a).
Figure 1
Figure 2