Siemens SINAMICS G115D Operating Instructions Manual page 524

Additional information on the SIMOGEAR geared motor
12.3 Specific data gearbox
Note
Oil sump temperatures above +80 °C can reduce service life. A temperature increase by 10 K
halves the service life by the amount as shown in the figure titled "Guide values for oil change
intervals".
For a +80 °C oil sump temperature, the following service life can be expected when observing
the properties specified by Siemens:
Table 12-45
Type of oil
Mineral oil
Biodegradable oil
Physiologically safe oil according to USDA-H1/-H2
Synthetic oil
①
②
T
I
Figure 12-35
Grease service life of roller bearing greases
Roller bearings and the clearance in front are filled with sufficient grease.
Under approved operating conditions and ambient temperatures, no regreasing is required.
We recommend that the grease in the bearings is also renewed when the oil or shaft sealing
rings are replaced.
522
Service life of the oils
Mineral oil
Synthetic oil
Oil bath steady-state temperature in °C
Oil change interval in operating hours in h
Guide values for oil change intervals
Service life
10 000 operating hours or 2 years
20 000 operating hours or 4 years
SINAMICS G115D Wall Mounted distributed drive
Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA