Why is the bearing damaged prematurely? Doing so can increase the life of the bearing

Bearings are an important part of contemporary machinery and equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. With the increasing demand for bearings, the problems of premature damage and short life span of bearings have plagued every mechanical enthusiast. Today, I want to share with you the methods and techniques to extend the service life of bearings. You are welcome to comment and share your experience below.

What is the cause of premature bearing damage? How to improve the life of the bearing?

Under a certain load, the number of revolutions or hours that a bearing experiences before pitting corrosion is called the bearing life. Bearings within this life expectancy should undergo preliminary fatigue damage on any bearing rings or rolling elements. However, in our daily practical use, it can be clearly observed that the actual life of bearings with the same appearance under the same working conditions is quite different. What is causing this? Summarize the following points:

1. Improper installation (about 16%)

1. The force is too strong during installation, and hitting the bearing with a hammer is the most harmful to the bearing; it is also the main cause of deformation. (Guide: What matters should be paid attention to when installing precision bearings?)

2. Installation deviation or not installed in the bearing position, resulting in too small bearing clearance. The inner and outer rings are not at the same center of rotation, resulting in different concentricity.

Suggestion: Choose appropriate or professional bearing installation tools, and use special instruments to test after installation.

2. Pollution (about 14%)

Pollution can also cause premature damage to the bearing. Pollution means that sand, dust, metal chips, etc. enter the inside of the bearing. The main reasons include: opening the bearing package too early before use, causing pollution; the working environment is not clean during installation, causing pollution; the working environment of the bearing is not clean, and the working medium is polluted.

Suggestion: It is best not to unpack the bearing before use; keep the installation environment clean during installation and clean the bearing to be used; strengthen the sealing device of the bearing.

3. Poor lubrication (about 50%)

According to investigations, poor lubrication is one of the main reasons for premature bearing damage. Including failure to fill lubricant or lubricating oil in time; failure to fill lubricant or lubricating oil in place; improper selection of lubricant or lubricating oil; incorrect lubrication method, etc.

Suggestion: Choose the correct lubricant or lubricating oil, and use the correct lubrication filling method.

Fourth, fatigue (about 34%)

Fatigue damage is a common damage method for bearings. Common causes of fatigue damage may be: long-term overload operation of the bearing; failure to repair in time; improper maintenance; equipment aging.

Suggestion: Choose the appropriate bearing type and replace the fatigue bearing regularly and in time.

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