Pb-500 brake heavy duty, Customer shall maintain, Armature view outside mounted flush backing plate – Warner Electric PB-650 Pin Drive User Manual
Page 18: Magnet view (inside & outside mounted)

18
Warner Electric • 800-825-9050
819-0485
PB-500 Brake Heavy Duty
Shaft Sizes
.750– 1.250
Static Torque
40 lb.ft.
Maximum Speed
5,400 RPM
Standard Voltage
D.C. 6, 24, 90
Outside Mounted
Offset Backing
Plate
Customer Shall Maintain:
1. Squareness of brake mounting face with
armature hub shaft within .006 T.I.R.
2. Concentricity of brake mounting pilot
diameter with armature hub shaft within
.010 T.I.R.
Bore and Keyway Dimensions
Armature
Bore Dia.
Keyway
.751/.750
.187 x .093
.876/.875
.9385/.937
1.001/1.000
1.126/1.125
.250 x .125
1.251/1.250
* Mounting holes are within .010 of true position relative to pilot
diameter.
** Mounting holes are within .008 of true position relative to pilot
diameter.
Armature View
Outside Mounted Flush Backing Plate
5.140 Dia.
3.953
.515 Max.
8-32
UNC-3A
.390 Max.
3/8-16
UNC-2A
.062
When New
2.312 Max.
1.546
1.031
1.187
1.093
1.171
1.203
.171 Max.
2.687
Dia.
2.065
2.063
Pilot Dia.
1.281
2.390 Max.
.375
1.093
.208/.201 dia. (8)
holes equally
spaced on 2.375
dia.*
5.062
Removable plug
in ends for 1/2"
conduit.
45°
5 Sq.
6.500
6.498
.399/.389 dia. (4)
holes equally
spaced on 5.875
dia.**
For Bore & Keyway sizes
see chart below.
.468
Max.
2.234 Max.
1.125
.953
1.015
Magnet View
(Inside & Outside Mounted)
3.750