What is the cause of overheating of motor bearings?

What is the cause of overheating of motor bearings?

The main reasons for overheating of motor bearings include the following:

1. Lubrication issue: Improper use of lubricating oil or grease is one of the main causes of bearing overheating. Excessive or insufficient lubricating oil or grease, 

poor quality, deterioration, or impurities can all affect its lubrication effect, leading to bearing overheating.

1、Bearing damage: Bearing damage or wear can cause increased friction, resulting in a large amount of heat generation. The reasons for bearing damage may include 

poor lubrication, improper assembly, and the entry of impurities.

2. Assembly issue: Improper installation accuracy and fitting tolerances of bearings can also lead to bearing overheating. For example, if the fit between the inner ring 

of the bearing and the shaft is too tight or too loose, or if the fit between the outer ring of the bearing and the end cap is too tight or too loose, it will affect the rotational 

flexibility of the bearing and generate heat.

3. Insufficient cooling: Malfunctions in the cooling system or poor cooling performance can also cause an increase in bearing temperature. For example, improper selection 

of coolers and blocked cooling pipelines can affect the cooling effect.

4. Other factors such as excessive motor vibration, tight belts, or poor coupling assembly can also cause an increase in bearing load, leading to overheating.

The methods for preventing and solving motor bearing overheating include:

Reasonable selection and use of lubricating oil or grease: Ensure that the quality of the lubricating oil or grease is good and has not deteriorated, adjust its dosage, and 

avoid too much or too little.

Regular inspection and maintenance of bearings: Regularly check the wear of bearings, replace severely worn bearing components in a timely manner, and ensure the 

normal operation of bearings.

Optimize the cooling system: Ensure the normal operation of the cooling system, regularly clean the cooling pipelines, and avoid blockages.

Adjust assembly accuracy: Ensure that the installation accuracy and fit tolerance of the bearings are within a reasonable range, avoiding overly tight or loose fits. By 

using the above methods, it is possible to effectively prevent and solve the problem of motor bearing overheating, ensuring the normal operation of the motor.