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What are the causes of self-aligning ball bearing failure?

2023-10-20

First, let’s take a look at the characteristics of self-aligning ball bearings:

The characteristics of self-aligning ball bearings are mainly reflected in their structure and function.

Structurally, the inner and outer ring raceways of the self-aligning ball bearing are spherical, which gives it the ability to automatically align and compensate for errors caused by non-concentricity and shaft deflection. However, the relative inclination of the inner and outer rings shall not exceed 3 degrees.

Functionally, self-aligning ball bearings have the feature of automatic adjustment, which can automatically adjust and increase the burden on the bearing when the shaft or shell deflects. This kind of bearing can also bear radial load and axial load in two directions. It has large radial load capacity and is suitable for situations with heavy load and impact load.

The reasons for the failure of self-aligning ball bearings may be as follows:

1. Unreasonable design: If the bearing design is unreasonable, it will cause the bearing to be overloaded, causing the bearing to fail.

2. Poor processing technology: During the processing process, if the processing technology is poor, it may cause bearing failure.

3. Improper assembly: Improper assembly will cause the bearing to be too tight or too loose, leading to failure.

4. Improper maintenance: If the bearing is not properly maintained, it may cause bearing failure.

5. Usage factors: Usage factors mainly refer to whether installation, adjustment, use and maintenance, maintenance and repair, etc. meet the technical requirements. For example, installation conditions are one of the primary factors among usage factors. Improper installation of bearings often leads to changes in the stress state between the parts of the entire set of bearings. Aligning ball bearings operate in abnormal conditions and fail prematurely.

To sum up, there are many reasons for the failure of self-aligning ball bearings. In order to ensure the normal operation of the bearings, comprehensive control is required from multiple aspects such as design, processing, assembly, maintenance and use. In daily maintenance, operation and maintenance should be carried out strictly in accordance with the requirements, and correct installation and use procedures should be followed to ensure the normal operation of the machine.

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