Warner Electric General Trouble Shooting - Manual (Page 5)

Taper Bushings
Are the taper bushings tight on the shaft? Proper
bushing installation is important. Proceed as
follows: All parts must be clean before assembly.
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. Lubricate the locking set
screws, insert them into the bushing and slide the
assembly on to the shaft. Position the hub so that
a 1/16" running clearance will be provided
between the magnet and armature faces. Tighten
the bushing on the shaft by drawing up on each
screw alternately. During the tightening process
the busing should be wrapped sharply from time
to time, to make certain that it seats-in properly.
Brushholder
Is the brushholder properly installed? The
mounting bracket must be solid. The brushes are
springloaded and should be in good contact with
the collector ring. The brushes may be simply
worn out and should be replaced.
Alignment
Are the friction surfaces correctly aligned? If the
unit is a clutch coupling, the two shafts should be
concentric within .006 T.I.R. The unit does not
compensate for angular misalignment between
shafts. For a brake the magnet face must be
square with the armature shaft within .006 T.I.R.
The magnet mounting pilot diameter must be
concentric with the armature shaft within .010 T.I.R.
Armature Flatness
Is the armature face flat? If it has been dropped or
damaged, it may be out of flat and the torque will
drop off considerably. New armature segments are
held flat and in plane within .002 T.I.R.
Dimension “A” for collector ring: Size 500 units is 4" to centerline of shaft. Size 825 and above is 5-3/4"
to centerline of shaft. Brushholder may be mounted at one end opposite conduit or from either side. It is
recommended that brushes be assembled so that arrow on brushes points in the direction of rotation of
collector ring, however brushholder may be used with reversing clutch.
0.56
(14.22)
0.75
(19.05)
1.41
(35.81)
1.56
(39.69)
0.78
(19.84)
1.72
(42.69)
1.34
(34.03)
By
Customer
By
Customer
1.88
(47.8)
1.31
(33.34)
0.75
(19.05)
0.38
(9.53)
0.75
(19.05)
0.38
(9.53)
0.188
(4.78)
4 holes tapped for #8-32 screws
(by customer) to enter brushholder
case 0.31 (7.87) max.
Rotation
1/2 standard
straight pipe
tap 0.391 (9.93)
deep
Dim.
“A”
1.03
(26.16)
0.28
(7.11)
Alternate Mounting
0.188 (4.76) dia. 2 holes thru
screws and nuts by customer
Brushholder Assembly And Mounting Dimensions
Warner Electric • 800-825-9050 P-233 • 819-0451
5