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

First, let's understand the characteristics of self-aligning ball bearings, which are mainly reflected in their structure and function.

Structure:

The raceways of the inner and outer rings of self-aligning ball bearings are spherical, giving them automatic self-aligning capability. This compensates for errors caused by misalignment and shaft deflection. However, the relative tilt between the inner and outer rings must not exceed 3 degrees.

Function:

Self-aligning ball bearings feature automatic adjustment, which allows them to adapt to shaft or housing deflection while increasing bearing load capacity. These bearings can withstand radial loads and axial loads in both directions, with high radial load capacity, making them suitable for heavy-load and impact-load conditions.

The failure of self-aligning ball bearings may be attributed to the following aspects:

1. Unreasonable design:

Improper bearing design can lead to overload, causing the bearing to fail.

2. Poor processing technology:

Deficiencies in the manufacturing process may result in bearing failure.

3. Incorrect assembly:

Improper installation can cause the bearing to be too tight or too loose, leading to failure.

4. Inadequate maintenance:

Lack of proper maintenance may cause the bearing to malfunction.

5. Usage factors:

Usage factors mainly refer to whether installation, adjustment, operation, maintenance, and repair comply with technical requirements. For example, installation conditions are one of the primary usage factors. Improper installation often alters the force distribution among all components of the bearing set, causing the self-aligning ball bearing to operate abnormally and fail prematurely.

In summary, there are many causes of self-aligning ball bearing failure. To ensure normal bearing operation, comprehensive control is required in design, processing, assembly, maintenance, and usage. During daily maintenance, operations and maintenance should strictly follow specifications, and correct installation and usage procedures should be followed to ensure the normal operation of machinery.

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