The information of bearing lifetime and bearing grease lifetime are estimations only to
provide a magnitude of them. The bearing lifetime and bearing grease lifetime in customer
application may vary. Danfoss is not responsible for the actual bearing lifetime in use. For
further information, contact Danfoss representative.
The maximum relubrication interval in operation is six months. The amount of grease per
relubrication is 20 g.
The relubrication interval depends on the used rotation speed and bearing temperature, and is
presented in the Figure below. The different curves represent different bearing temperatures. The higher
the temperature is and the higher the rotation speed is, the lower the relubrication interval is.
Relubrication interval of the machine compared to rotation speed and bearing temperature
For more information about the location of grease nipples and grease escape holes, see
Chapter
Bearing relubrication:
It is normal if no grease exits the electric machine. This is because the cavities inside the
electric machine can hold a lot of grease.
1. Make sure that the electric machine has reached its operating temperature.
2. Remove the plugs from the grease escape holes.
3. Open the grease nipple plugs.
User Guide
EM-PMI540-T4000
Maintenance
©
Danfoss | April 2023
BC265857716810en-000202 | 57
