Bearing Change Interval - Siemens 1FK7 Series Operating Instructions Manual

9.1.3

Bearing change interval

The bearings are subject to wear and must be replaced after a defined number of operating
hours. For average load levels, the bearings must be replaced after approx. 25 000 h.
The lifetime can be extended if the motor is operated under favorable conditions (e.g. low or
medium speeds, low radial forces (cantilever forces), vibration load).
NOTICE
Harsh operating conditions
If the motor is subject to harsh operating conditions (e.g. continuous operation at n
vibration/shock loads, frequent reversing duty etc.), the bearing replacement intervals t
can decrease by up to 50%.
Synchronous Motors 1FK7
Operating Instructions, 03/2011, 610.40700.40c
Maintenance
9.1 Inspection and maintenance
max
, high
LW
47