M2DC Series Hardware Manual
10
Rev. 1.1
2018/04
400-820-9661
Product
Component
Standard replacement cycle
Notes
Drive
Smoothing condenser
Approx. 6 years
These hours or cycles
are for reference only.
Occurence of error,
may mean replacement
is required before the
standard replacement
cycle is up.
Aluminum electrolytic
capacitor (on PCB)
Approx. 6 years
Rush current preventive
relay
Approx. 100,000 uses (depending
on operating conditions)
Rush current preventive
resistor
Approx. 20,000 uses (depending
on operating conditions
Motor
Oil seal
5,000 hours
1.6.2 Bearing Life
Motor bearing life depends on several factors including: axial and radial loads, motor speed, temperature,
and the bearing ratings. Because the front bearing is positioned closest to the motor shaft, it usually
carries a higher radial load and has the shortest life.
A common cause for shaft and bearing failure is high radial
loads that are created when a pulley is attached to the motor
shaft at a large distance from the motor mounting face, and the
belt has high tension. To avoid this condition mount pulleys and
gears as close to the face of the motor as possible, and avoid
over tightening belts. These curves show bearing life, at various
speeds and radial loads. The curves were calculated with the
radial load applied at the end of the shaft.
