Date: 2013-08-30

Influences on the operating life of slewing rings

 Influences on the operating life of slewing rings
The operating life is defined as the life actually achieved by a slewing ring. This can deviate significantly from the calculated basic rating life due to wear and/or fatigue. Possible causes include:
oscillating bearing motion with very small swivel angles –false brinelling
vibration while the bearing is stationary
 unsuitable design or deformation of the adjacent construction
excessively high operating temperatures
 incorrect maintenance or lubrication
 contamination
 incorrect fitting
 preload of the fixing screws.
Due to the variety of installation and operating conditions, it is not possible to precisely predetermine the operating life. The most reliable way of arriving at a close estimate is by comparison with similar applications.

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