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Why is the bearing prematurely damaged? Full analysis of techniques and precautions to improve bearing life

wallpapers Tech 2020-05-27
First, what is bearing life? Under a certain load, the number of revolutions or hours the bearing experiences before pitting corrosion is called bearing life. For bearings within this life, initial fatigue damage should occur on any of their bearing rings or rolling elements. However, in our daily practical use, we can clearly observe that the actual appearance of bearings with the same appearance under the same working conditions is very different. What caused this? The editor summarizes the following points:
Improper installation (about 16%)
1. Excessive force during installation, where hitting the bearing with a hammer is the most harmful to the bearing; it is also the main cause of deformation.
2. There is deviation in the installation or the bearing is not installed, which causes the bearing clearance to be too small. The inner and outer rings are not at the same center of rotation, causing eccentricity.
Suggestion: Choose appropriate or professional bearing installation tools, and use special instruments to test after installation.
Pollution (about 14%)
Pollution can also lead to premature bearing damage. Pollution means that sand, metal chips, etc. enter the bearing. The main reasons include: opening the bearing packaging prematurely before use, causing pollution; the working environment is not clean during installation, causing pollution; the working environment of the bearing is unclean, and the working medium is contaminated.
Recommendations: It is best not to unpack the bearings before use; keep the installation environment clean during installation, clean the bearings to be used; strengthen the sealing device of the bearings.
Poor lubrication (approximately 50%)
According to investigations, poor lubrication is one of the main causes of premature bearing damage. Including not filling 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 filling method.
Fatigue (about 34%)
Fatigue damage is a common way of bearing damage. The common causes of fatigue damage may be: long-term overload operation of the bearing; failure to repair in time; improper maintenance; equipment aging, etc.
Suggestion: Choose the appropriate bearing type and replace the fatigue bearing in time.

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Tag: life   bearing life   Bearing