Causes of bearing failure: Volume 1

Causes of bearing failure: Volume 1

External environmental factors and incorrect installation is the most common cause of bearing failure? Bearing type, application and environment is unique, leading to bearing failure before drawing conclusions, we must carefully consider many factors.

To help you solve bearing problems, we discuss the main factors that can lead to a bearing failure. We hope that in addition to the completion of preventive maintenance bearings, these will help you resolve causes of bearing failure

Common factors bearing failure

 dirt

Pollution

Reason: mud, abrasive, links, dust, contaminated work areas, dirty hands or tools, or lubricants or cleaning fluid foreign matter steel scrap.

How to find: the rolling element and raceway depression, caused shock

How to fix: filtering lubricants, clean workspace, tools, fixtures and hand, the problem, reduce the risk of contamination.

Improper installation

Reason: In most cases, the bearing is installed incorrectly. Bearing installation should cooperate with the pressure of the rotating ring.

How to find: These are some common situations that may lead to depression, worn, cracked ring, operating temperature is high, early fatigue, and premature bearing damage (and many others).

Install the bearing outer ring on the shaft by the application of pressure or blow

In the inner ring by installing the bearing into the housing

Loose shaft with the

Not robust housing

- Tight fit

- Circular shell

The difference between the bearing seat

How to solve this problem: the correct installation of the installation, and provide training to ensure that all employees understand the difference between the correct and incorrect mounting installation.

dislocation

Cause: Usually bending the shaft, the shaft shoulder irregular, irregular intervals irregular or improper installation will clamp nuts loose fit. Deviations may lead to overheating and failure of the separator.

How to find: a worn path is not parallel to the non-rotating ring raceway on the edge of the raceway.

How to solve this problem: Check the shaft and housing shoulder and bearing radial runout, using precision locknuts.

False impression

Reason: In the fast-moving ball raceway, while the machine is idle. The fast-moving elements taken lubrication and lack of fresh oil bearing rotation is not allowed to return to the scene.

How to find: signs of wear rolling element linear spacing in the axial direction, no raised edges, rather than the trademark because they do not properly installed.

How to solve this problem: eliminate or absorb external vibration, and the use of lubricants containing anti-wear additives.