In the process of selling rolling bearings, many customers said that as long as the surface of rolling bearings is bright, the quality is good, which is wrong. The surface of rolling bearing should be dark bright, which is caused by whether the steel used for rolling bearing is up to the standard and the grinding process and cutting fluid used, among which the former two are the main ones.

Overheating is the biggest culprit of bearing failure, mainly because bearing heating is generally an alarm signal of abnormal operation of the machine, and failure to deal with it as soon as possible will cause chain reaction such as damage to the machine. Common causes of bearing heating include: