Siemens SIMOTICS M 1PH8 Configuration Manual page 95

The values specified in the table below apply to the same conditions as are described above
for bearing change intervals:
Table 4-19 Relubrication intervals
Shaft Bearing version
height
180 Standard
Increased radial
forces
Performance
225 Standard
Increased radial
forces
Performance
280 Standard
Increased radial
forces
1) Grease quantity for relubrication for normal conditions (ambient temperature up to 40°C, horizontal mounting.
Holding capacity of the grease chamber with precise adherence to the grease quantity for each relubrication interval.
2)
Calculated number of re-lubricating intervals; the bearing lifetime is specified statistically by means of the L
3)
Relubricating intervals must be halved for vertically mounted units.
4)
Note
Adapting relubricating intervals
Unfavorable factors such as the effects of mounting/installation, speed or mechanical loads
require that the relubricating intervals are appropriately adapted. Situations such as these
require special consideration or must be calculated - and must be engineered according to the
limitations and constraints together with the responsible motor plant.
The increased axial loads imposed on the bearings on vertically mounted motors can reduce the
bearing lifetime by almost 50%. This applies to shaft heights 180 to 280 due to the rotor weights.
A check which takes into account the relevant boundary conditions must be performed on SH
280 in the relevant motor factory.
1PH8 SIMOTICS M main motors
Configuration Manual, 12/2022, A5E51895839A
Relubrication inter‐ Quantity of grease
val in operating for each relubrica‐
hours tion operation
4)
h
7000
4000
4000
7000
4000
4000
7000
4000
Grease cham‐
ber 2)
1)
g
g
15 80
20 80
15 80
30 180
40 180
30 180
40 400
50 400
Mechanical properties
4.4 Types of bearing
Possible number of
relubrication inter‐
vals
3)
5
4
5
6
4
6
10
8
definition.
10h
93