2-3 MN1240
Shaft Loads
The motors can be damaged by excessive shaft loads. This may shorten the motor’s
service life. The motor warranty is also voided for excessive shaft load related failures.
The maximum allowable radial force (F
radial max
) depends on the shaft load. It is
determined by (distance x force) and the output shaft design (plain shaft or shaft with
keyway). When motor shaft has both a radial load and an axial load, axial load rating
= 44% of radial load rating listed.
Figure 2-2 Radial Load Capacity
(Radial Force)
Notes:
1) Solid lines are based on L
10
= 20,000 hours.
2) Dashed lines are based on 10
4
load peaks
at 110% of rated torque.
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