Shaft Loads - ABB BSM50N Installation And Operating Manual

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
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.
2-3
Figure 2-2 Radial Load Capacity
Notes:
1) Solid lines are based on L
2) Dashed lines are based on 10
at 110% of rated torque.
) depends on the shaft load. It is
radial max
(Radial Force)
= 20,000 hours.
10
load peaks
4
MN1240