1. Whether the running condition of the slewing bearing is good depends on the size and surface finish of the matching part of the slewing bearing.

2. Improper addition of grease. During the operation of the slewing bearing, lubrication is very important, and the correct use can ensure its normal life. Adding dirty or excessive grease can cause the slewing bearing to heat up.

Therefore, in the process of use, it is necessary to check and maintain regularly to avoid abnormality of the slewing bearing.