Causes of heating of rolling bearings and their elimination methods:

1. Low bearing precision

Select bearings with specified accuracy grades.

2. The spindle is bent or the box hole is not concentric

Repair the spindle or box.

3. Poor lubrication

Lubrication has an important impact on the service life of the bearing and friction, wear, vibration, etc. Good lubrication is a necessary condition to ensure the normal operation of the bearing. According to statistics, about 40% of bearing damage is related to poor lubrication.

4. Improper installation

Improper installation is another important cause of bearing heat. Whether the bearing is installed correctly or not, it has a direct impact on its life and the accuracy of the host, so the centerline of the shaft and the bearing hole must be coincident during installation.

If the bearing is installed incorrectly, the accuracy is low, and the bearing has deflection, torque will be generated when rotating, causing the bearing to heat up or wear. In addition, the bearing will generate vibration, increase the noise, and increase the temperature rise.

5. Running ring of the inner shell of the bearing

Replace bearings and related wear parts.

6. The axial force is too large

Clean and adjust the clearance of the sealing ring to be between 0.2 and 0.3mm, correct the diameter of the impeller balance hole and check the static balance value.

7. Bearing damage

Replace the bearing.

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