Warner Electric PB-120, PB-170, PB-250, PB-400 - Manual (Page 14)

14 Warner Electric • 800-825-9050 P-201
• 819-0485
PB-250 Flange Mounted Brake
Shaft Sizes .375 – .750
Static Torque 70 lb. in.
Maximum Speed 7,500 rpm
Standard Voltage D.C. 6, 24, 90 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 shaft within .010 T.I.R.
Bore and Keyway Dimensions
Armature
Bore Dia.
Keyway
.376/.375 .093 x .046
*.438/.437
.501/.500 .125 x .062
*.563/.562
.626/.625
*.688/.687 .187 x .093
.751/.750
* Available on special order only.
Armature View
Field View
1.063
1.061
Pilot Dia.
Anti. Arm.
.062
.171 (Std.)
.187 (Anti.)
.687 (Std.)
.718 (Anti.) .437
Max.
#8-32
UNC-3A
.203 Min.
1.187
.015 When New
.343 Max.
K
Std. Arm.
1.390
2.625
Max.
Dia.
1.250
1.078
.718
1.968 (Std.)
1.984 (Anti.)
Antibacklash
Armature
Std. Armature
For Bore & Keyway
sizes see chart below.
45°
24°
.437
Max.
12°
.437 Max.
3.500/3.498 Pilot
Diameter
2.625 Sq.
.204/1.87 diameter (4) holes equally
spaced on 3.125 diameter
*Mounting holes are within .010 of true position relative to pilot
diameter.
.015