Bearings; Lubrication - Siemens 1PH728 Series Operating Instructions Manual

Measures, intervals
Measures after service period intervals have elapsed:
Table 7-1
Initial inspection
Relubrication
Cleaning
Main service
7.1.3

Bearings

Description
The three-phase motors have grease-lubricated, rolling-contact bearings. A
regreasing device is available.
A deep-groove ball bearing is installed at the non drive end as a locating bearing.
Depending on the type of load, a deep-groove ball bearing or cylindrical-roller
bearing is installed at the drive end as a floating bearing.
The respective bearing assignment, the correspondingly permissible lateral forces
and the minimum loads when cylindrical-roller bearings are installed at the drive
end can be found in the catalog or you can ask us for this data.
Preloading springs, thrust collars and/or equalizing rings are installed in the active
part of the bearing at the drive end to provide backlash compensation for the outer
races. With consideration for operation at the frequency converter, the bearing at
the non drive end is electrically insulated.
7.1.4

Lubrication

Relubrication intervals
The relubrication intervals are stated on the lubrication instruction plate of the
three-phase motor.
SIEMENS AG - Operating Instructions
Three-phase induction motor 1PH728.
Service period intervals
Measures Service period intervals
after 500 operating hours
(see lubrication instruction
plate)
depending on local degree
of pollution
approx. every 16,000
operating hours
Maintenance
Intervals
after 6 months at the latest
after 12 months at the latest
after 2 years at the latest
7-3