JVL Industri Elektronik A/S - User Manual - Integrated Stepper Motors MIS23x, 34x, 43x 285
13.6 Life time
13.6.1 Life time of ball bearings in MIS34x
The curve below can be used to determine the relation between the radial load at the
motor output shaft and where the load is placed at the shaft with reference to the flange
of the motor.
The curves are based on a continous speed of 3000 RPM.
If the speed is lowered the lifetime will increase inversly proportional.
Example:
A motor is having a radial load of 200N placed with center 15 mm from the flange.
According to the curve the lifetime will be 15.050 hours at 3000 RPM.
If the speed is lowered to 300 RPM (10 times lower than the curve is specified at) the
lifetime will increase 10 times giving a total of 150.500 hours of operation.
Only MIS34x
TT2485-01GB
Expected ball bearing life time V.S. distance
Life time (hrs)
Distance pilot surface
mm
0
10 15 20 25
100N
Axial shaft load
200N
300N
400N
500N
5000
10000
15000
20000
25000
30000
35000
40000
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