Danfoss EM-PMI540-T3000, Руководство пользователя

Страница: 50 / 67

Bearings and lubrication
Grease relubricable bearings (BHS option)
The mechanical bearing lifetime (grease relubricable bearings) of the machine is shown below. It
depends on the bearing operation temperature and rotation speed.
Figure 32. Bearing lifetime (mechanical) of the electric machine with grease relubricable bearing option
The expression of L
10
in bearing lifetime information is a standard way of expressing the lifetime
and means the time period at the end of which 90% of the bearings are still reliably
working. Grease relubricable bearings (BHS option) need regular greasing. This is due to the
limited lubricant (grease) lifetime in operation conditions, and is shorter time period than the
actual bearing lifetime.
EM-PMI540-T3000
8. Maintenance
| BC265857716810en-000103
© Danfoss | Produced By: Danfoss Power Solutions | November 2018 | 49