Warner Electric CB Series and Super CB Series Sizes 2, 4, 5, 6 and 8 - Manual (Page 4)

Figure 2 – Acceptable Mounting
If the application contains a substantial radial
bearing load, arrange the pulley over the
centerline of the clutch free hub as illustrated
in Figure 3. Place one support bearing as
close to the pulley as possible, using a torque
arm for anti-rotation.
Customer's Bearing-
Mounted Pulley
Double Bearing Support
for Stub Shaft
Set Collar
Pin Drive
Not Bolted
to Input
Secure Pulley
to Hub
4 Warner Electric • 800-825-9050 P-258 • 819-0406
Horizontal Mounting
Figure 1 illustrates an ideal clutch/brake mounting
application. The unit is attached to the output
shaft with both a key and set screws. The plate
is restrained from rotating, but not from axial
movement, reducing the side load on the CB’s
internal plate bearing.
Figure 1 - Ideal Mounting
Clutch fully supported by
the shaft with bearing
support on both ends
Customer's Input member
counterbored to center mass
over clutch bearing
Plate restrained from rotating by pin
or shoulder bolt. No axial binding
+
Thread engagement
exceeds factory specifications.
This causes interference
which results in clutch
malfunction.
Incorrect Thread Engagement
In cases where easy access to the input is
desirable, the clutch/brake can be mounted
on a stub shaft. However, the unit must still
be fully supported, while overhung loads on
the input member must be avoided to
maintain the life of the radial bearing.
Figures 2 and 3 illustrate alternate mounting
configurations for achieving proper support.
Inputs are usually face-mounted to the input
hub of the CB unit as shown in Figure 1. This
type of mounting is facilitated by the drilled
and tapped holes provided in the free hub
flange. The configuration shown in Figure 2
is a possibility, if the radial load on the input
hub of the CB is small compared to the
specified load.