Warner Electric PB-1525 - Manual (Page 3)

3 Warner Electric • 800-825-9050 P-209 • 819-0517
Primary Brake Heavy Duty
Spline Drive Armature
PB-825 PB-1000 PB-1225 PB-1525
The illustration drawings, parts lists, and
exploded views for these units can be found begin-
ning on page 10.
A. Installing the Conduit Box
Install the conduit box on the magnet. Instructions
for this procedure can be found on page 6.
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.)
2. A machined pilot diameter is provided on the
magnet mounting flange (refer to illustration
drawings page 11) to aid in the proper
positioning of the magnet.
Mounting Surface
Pilot diameter
Magnet
Figure 1
3. Once the mounting surface has been
prepared, the magnet is bolted in place with
capscrews and lockwashers. (See Figure 2.)
4. Use a dial indicator to check the unit for con-
centricity and squareness to the shaft. The unit
should be concentric within .010 T.I.R. and
square within .006 T.I.R. (See Figure 3.)
C. Assembling the Armature and Hub
The heavy duty units contain spline drive
armatures and hubs. The armatures are shipped
with a built-in autogap spring accessory. This
device automatically maintains a gap of about
1/32-inch between the armature and magnet
faces for the life of the unit.
Figure 2
Figure 3