Bearings are an important component in 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 bearing damage and short life span plague every mechanical enthusiast. How to extend the service life of bearings?

First, what is bearing life?

Under a certain load, the number of revolutions or hours that a bearing experiences before pitting occurs is called bearing life. Bearings within this life should suffer initial fatigue damage on any of their 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 very different. What is the reason for this? The following points are summarized:

1. Improper installation (about 16%)

1. The force during installation is too strong, among which hitting the bearing with a hammer will damage the bearing the most. ; is also the main cause of deformation.

2. The installation is deviated or not installed in the bearing position, resulting in too small bearing clearance. The inner and outer rings are not in the same center of rotation, resulting in misalignment.

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

Second, pollution (about 14%)

Pollution can also lead to premature bearing damage. Pollution means that sand, metal chips, etc. enter the inside of the bearing. The main reasons include: prematurely opening the bearing package before use, causing staining; unclean working environment during installation, causing pollution; unclean working environment of the bearing and contamination of the working medium, etc.

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

Three, poor lubrication (about 50%)

According to the survey, poor lubrication is one of the main reasons for premature bearing damage. Including not adding lubricant or lubricating oil in time; lubricant or lubricating oil not filling 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 and 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 bearings; failure to maintain in time; improper maintenance; equipment aging and so on.

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