Warner Electric EM-MBFB User Manual

Electrically Released Motor Brake

Module for EM-MBFB and EUM-MBFB

P-1337
819-0314

Installation Instructions

Warner Electric’s MBFB series of Electrically Released Brake Modules are designed for brake

only applications when mounted to the back of a NEMA C-face double shaft motor.
The fail safe brake engages when power goes off.

Model Part No.

EM 210-20MBFB-56 5371-169-030
EM 210-20MBFB-56, 24V 5371-169-033
EM 210-7/8-20MBFB-56 5371-169-072
EUM 210 7/8-20MBFB-32 5371-169-064
EUM 210 7/8-20MBFB-56 5371-169-068
EUM 210-20MBFB-32 5371-169-056
EUM 210-20MBFB-56 5371-169-060

Failure to follow these instructions may result
in product damage, equipment damage, and
serious or fatal injury of personnel.

If brake is to be applied with the
brake output shaft in a vertical condition
Warner Electric's application engineering
should evaluate application.

Model Configuration

EUM 210-20MBFB-32

Size Static Torque lb. ft.

The term “fail safe” describes a brake that
engages automatically when its full power is
shut off for whatever reason. The term, as
applied to brakes, designates a mode of
operation, not a guarantee of safety for the
equipment on which the brake is mounted
and for personnel who are near it.

Mounting Instructions

Step 1: Mounting the Brake to a Motor

The brake module (20) can be mounted
directly to the motor as follows:

A. Insert a key in the motor shaft keyway. Prick

punch the end of the motor shaft keyway to
prevent the key from sliding out.

B. A set collar is provided in the EM-210

mounting accessory to prevent the key from
sliding out. Slide the set collar against the
motor bearing and tighten the set screw
securely. (See Figure 1)

C. Align the motor shaft and key with the mating

shaft hole and key slot in the brake module.

D. Slide the module onto the motor shaft so the

module surface is snug against the motor face.

NOTE: Brake Module should slide freely
onto shaft and fit flush with motor c-face.

E. Secure the brake module in the motor C-face

with the four (4) long hex head capscrews.
Suggested torque for capscrews is 30-35 lb.ft.

(Figure 1)

Warner Electric • 800-825-9050 P-1337 • 819-0314

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