Warner Electric CB Series and Super CB Series Sizes 2, 4, 5, 6 and 8 - Manual (Page 3)

3 Warner Electric • 800-825-9050 P-258 • 819-0406
2. Mounting and Installation
Warner Electric wrap spring clutches and
clutch/brakes are factory assembled, requiring
no adjustments during installation.
Each clutch/brake backing plate assembly has
three or four mounting holes plus an anti-rotation
slot, and is designed to serve as a torque arm
rather than as a rigid mounting plate. The plate
should be restrained from rotating by a pin or
shoulder bolt, while allowing it to float axially.
The anti-rotation device must be capable of
withstanding the braking torque required by the
load.
Clockwise Rotation Shown
Important: Do not rigidly mount unit. Plate
must be allowed to “float” axially.
All Warner Electric wrap spring products are
designed to be installed in parallel shaft
applications where they are fully supported
by the shaft on which they are mounted.
Connecting the unit to the parallel shaft may be
accomplished by pinning (for sizes 2, 4, and 5)
or by key and set screw (for sizes 6 and 8).
When connecting the parallel shaft to the CB by
using a belt, chain, or gear drive, the input hub’s
radial bearing load capacity must not be
exceeded (see following chart). It may be
necessary to counter bore or bearing mount
the input pulley sprocket or gear.
Maximum Radial Bearing Load at
Maximum Speed
CB-2 = 7.5 lbs.
CB-4 = 14 lbs.
CB-5/Super CB-5 = 32 lbs.
CB-6/Super CB-6 = 63 lbs.
CB-8/Super CB-8 = 300 lbs.
CB and Super CB style clutch/brakes are
designed for horizontal shaft mounting.
Therefore, horizontal mounting is the preferred
method. While it is possible to mount units
vertically, vertically mounted units will see lower
life than those mounted horizontally due to the
wear between hubs resulting from gravity.
Input hub thread engagement requirements.
Just a reminder. . .While mounting a sprocket or
pulley to the input hub of your CB-2, CB-4,
CB-5, CB-6, or CB-8, the screws/bolts used
must not protrude through the flange or hub.
This will interfere or jam the control collar
assembly, thereby causing the clutch to
malfunction by failing to “drive” or causing the
clutch to “slip.”
Maximum Thread Engagement
CB-2 = .150 in.
CB-4 = .280 in.
CB-5/Super CB-5 = .350 in.
CB-6/Super CB-6 = .312 in.
CB-8/Super CB-8 = .360 in.
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Potential
Mounting
Holes
Potential
Mounting
Holes
Anti-Rotation
Slot
Maximum
thread
engagement
specified by
factory
Correct Thread Engagement