Warner Electric SFC-120, SFC-170, SFC-250, SFC-400 Bearing Mounted, Flange Mounted - Manual (Page 5)

5 Warner Electric • 800-825-9050 P-200
• 819-0481
C. Assembling the Armature and Hub
The clutch units contain an extended armature hub
mounted on sleeve bearings. These hubs may be
adapted to a customer-supplied sheave, sprocket,
or gear for transmitting power to a parallel shaft.
1. The antibacklash armatures are shipped
assembled and ready to be installed. See
Section D.
2. The standard armature and hub must be
assembled before it can be installed. Assemble
the armatures so that the shiny surfaces size
(120 and 170) or backing plate sides size (250
and 400) are against the hub retainer ring
(Figure 3).
3. An optional release spring may be used with the
standard armatures and hubs. The release
spring forces the armature back against the hub
retainer ring when the magnet coil is
de-energized.
Follow these instructions to assemble the
armature and hub when the optional release
springs are being used.
SF-170
Assemble the splined armature to the hub. The
shiny side of the armature should be against the
hub retainer ring.
Assemble the release spring into the groove in
the hub spline. The curved portion of the spring
should be against the armature (Figure 4).
SF-250
Insert the hub, with snap ring intact, into the
armature from the backing plate side. (See
Figure 5)
Insert both release springs into the holes of the
backing plate. Bow the springs as necessary to
insert them into the armature. (See Figure 6)
Figure 3
Figure 4
Figure 5
Figure 6