Warner Electric PCBC-500 Clutch_Brake Coupling - Manual (Page 15)

F. Mounting the Magnet and Magnet Hub
The magnet and magnet hub are mounted on the shaft
with a taperlock bushing. All parts must be clean and
free from burrs and chips before assembling.
1. Place the bushing into the hub and insert the
key. The key is a side-to-side fit and should not
contact the top of the keyway.
2. Insert the locking setscrews loosely into the
bushing and slide the assembly onto the shaft.
3. Adjust the magnet's position to allow a gap of
about 1/16 inch between the magnet face and
the armature face.
4. Secure the magnet's position on the shaft by
alternately tightening each setscrew with a
torque wrench to 175 in. lbs. torque. During the
tightening process the bushing should be
tapped lightly to make certain it seats-in
properly.
5. Set the autogap by pressing the armature
into contact with the magnet face and then
releasing it. The armature should spring back
about 1/32 inch. (Figure 11)
This gap will be automatically maintained for the
life of the unit.
1/32-inch
Armature
Magnet Hub
Magnet
Figure 11
G. Mounting the Brushholder
1. The brushholder is mounted on a bracket which
must be furnished by the customer. The
bracket must be firmly secured to prevent
vibration which could cause im proper contact
between the brushes and collector ring.
2. The distance from the centerline of the shaft to
the top of the brushholder should be 4".
Maintaining this dis tance will assure proper
spring tension on the brushes and maximum
wear follow-up. A detailed dimensional
drawing is included with each brushholder.
Warner Electric • 800-825-9050 819-0484 15