What are the reasons for bearing heating

What are the reasons for bearing heating

The main reasons for bearing heating include the following:

Poor lubrication: If the lubricant for the bearing is not selected properly or the oil level is insufficient, it can cause frictional heat to be generated during the 

operation of the bearing, resulting in an increase in bearing temperature.

Bearing wear: During use, bearings may be affected by dust, impurities, and other factors, leading to surface wear and increased friction, resulting in heat 

generation.

Improper installation: Incorrect installation methods or overly tight installation can cause additional friction to be generated during the operation of the 

bearing, resulting in heating.

Excessive bearing clearance: Excessive bearing clearance can increase the resistance between the rolling elements and the inner and outer rings, leading to 

heat generation.

Unreasonable internal structural design of bearings, such as small curvature radius of raceway and long roller length, can increase friction and lead to heat 

generation.

Insufficient or interrupted oil supply: Insufficient or interrupted lubricating oil supply can cause increased bearing friction, leading to heating.

Insufficient tungsten casting or incorrect composition: This can affect the lubrication performance of the bearing and cause heating.

Poor installation, improper clearance, and excessive vibration of the shaft can increase the friction and vibration of the bearing, leading to heating.