Life Time - JVL MIS17 Series User Manual

15.7
15.7.1 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 continuous speed of 3000 RPM.
If the speed is lowered the lifetime will increase inversely proportional.
Example:
A motor is having a radial load of 200N placed with centre 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.
Life time (hrs)
40000
35000
30000
25000
20000
15000
10000
5000
0
JVL Industri Elektronik A/S - User Manual - Integrated Stepper Motors MIS17x, 23x, 34x, 43x

Life time

Expected ball bearing life time V.S. distance
10
Distance pilot surface (mm)
15
Only MIS34x
Radial shaft load
20
TT2485-01GB
100N
200N
300N
400N
500N
25
337