Warner Electric Electrically Released Brake ER-375, ER-475, ER-650 - Manual (Page 3)

3 Warner Electric • 800-825-9050 P-253 • 819-0315
Figure 2
4. Use a dial indicator to check the unit for
concentricity and squareness to the shaft. The
unit should be concentric within .010 T.l.R. and
square within .006 T.l.R. (See Figure 3)
Figure 3
C. Armature To Shaft Assembly
Check to insure that all parts are clean and free
from burrs or chips. Insert the key into the shaft
keyway. Place the bushing into the hub and match
half holes to make complete holes. Each hole will
be threaded on one side only. Place the screws
loosely into the holes which are threaded on the
hub side. Slip the assembly onto the shaft and
position it so the armature is in contact with
the magnet.
Keep fingers clear of area
between the magnet and the armature as the
armature will be puIled sharply toward the
magnet after the gap is closed to
approximately 1/8 inch.
Installation Instructions
A. Customer Shall Maintain:
1. Squareness of brake mounting face with
armature hub shaft within .006 T.l.R.
2. Concentricity of brake mounting pilot
diameter with armature hub shaft within
.010 T.l.R.
B. Mounting the Magnet
The brake magnet is mounted to a stationary
machine member by a flange. Extreme care must
be taken in selecting the location for the mounting
of the magnet. Proper positioning is very important
for the unit to function correctly.
1. A pilot diameter on the mounting surface is
essential to hold the magnet within the required
tolerances. (See Figure 1)
Figure 1
2. A machined pilot diameter is provided on the
magnet mounting flange (See Figures 1, 2, & 3)
to aid in the proper positioning of the
magnet.
3. Once the mounting surface has been
prepared the magnet is bolted in place with
capscrews and lockwashers. (See Figure 2)
Magnet
Pilot Diameter
Mounting Surface