Warner Electric Spring-Set Brake Module User Manual

Spring-Set Brake Module

P-1249
819-0390

Installation Instructions

The Warner Electric Spring-Set Brake Module is designed to function as a holding brake for NEMA

C-face motors. The brake is self-engaging when the power is turned off or unintentionally interrupted.
It is to be mounted between a C-face motor and a C-face gear reducer. Do not apply overhung or
side loads to the output shaft of the Spring-Set Brake Module.

Failure to follow these instructions may result in product damage,

equipment damage, and serious or fatal injury to personnel.

Mounting the Brake to a Motor

1. Inspect the motor shaft and keyway for
burrs or damage. Remove all burrs and repair
damage so the brake module can freely slide
onto the shaft.

2. Insert the provided input key into the motor
shaft keyway. If necessary, prick punch the
motor shaft keyway to prevent the key from
sliding back while installing the brake
module. (Figure 1)

3. The input hub setscrews and the largest
ventilation slots on the housing must be
aligned to provide hex wrench access for
tightening to the motor shaft. If they are
not already aligned, apply the rated voltage to
the brake coil to release the brake, and then
rotate the shaft until the setscrews
and slots are aligned. (Figure 2)

4. Align the motor shaft and key with the brake
module keyway and slide the module onto the
motor shaft until the housing is in full contact
with the motor face. Do not use excessive
force. If the module does not freely slide on,
remove it and repair any burrs or damage on
the shaft.

5. Rotate the brake housing and/or shaft until the
input hub setscrews are accessible with a long
hex wrench. A flashlight may be required to
see the screws between the motor face and
the brake face.

Figure 1

Figure 2

Warner Electric • 800-825-9050 P-1249 • 819-0390

2