4
Warner Electric • 800-825-9050
P-273-5-WE • 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 screwdriver taking care not
to damage the fan (Figure 3a) .
Figure 1
Figure 2
