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RADIAL LOADING OF THE MOTOR
When a motor is driving a belt-driven load, care must be taken to
prevent the side pulling forces to damage the bearings and/or the
shaft of the motor.
MAXIMUM SHAFT RADIAL LOADING
Standard Ball Bearings and standard shaft extension
Radial Load Centered at tip of Shaft
Expected L10 life at 1750 RPM average speed of 20,000 hours
Frame/ Series
Shaft Diam
42
0.625
140
.875
182/184
1.125
213/215
1.375
219
1.625
254/256
1.625
259/2512
2.125
287
2.125
288/2810/2812
2.375
328/3211/3213
2.875
504
3.25
6222 / 6222W
506
3.625
6222 / 6222W
508
4.125
6222 / 6222W
If radial loads exceed the "Max Radial Load", or the sheave diameter is too
small roller bearing are required.
500 frames with ball bearings are recommended for direct coupled service only.
Belt drives with 500 frame motors require roller bearings in the drive end.
POW ERTEC "F" Series Motor Manual
TABLE
Max Radial Load
Min Sheave Dia
Bearing #
(lbs.)
203
90
205
180
207
280
209
440
209
650
211
600
M211
1100
313
1100
313
1350
315
1800
1500 / 2200
21.6 / 14.7
1400 / 2100
30.9 / 20.6
1300 / 2000
41.5 / 27.0
(in.)
0.9
2.4
4.6
4.4
4.0
6.5
6.0
6.0
9.6
12.0
© copy right 2012 by P O WE R TEC Industrial Motors, Inc.
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