Siemens SIMOTICS GP series - Page 109

Maintenance
9.3 Corrective maintenance
Standard motors SH 63 ... 355
Operating Instructions, 12/2018, A5E38483075A
107
Replacing bearings
Recommended interval after which bearings are to be replaced under normal operating
conditions:
Table 9- 4 Bearing replacement intervals
Ambient temperature
Principle of operation
Bearing replacement intervals
40 °C
Horizontal coupling operation
40 000 h
40 °C With axial and radial forces 20 000 h
● Do not reuse bearings that have been removed.
● Remove the dirty spent grease from the bearing shield.
● Replace the existing grease with new grease.
● Replace the shaft seals when the bearings are replaced.
● Slightly grease the contact surfaces of the sealing lips.
Note
Special operating conditions
The operating hours are reduced, e.g.
•
When machines are vertically mounted.
•
High vibration and surge loads
•
Frequent reversing operation
•
Higher ambient temperatures.
•
High speeds etc.