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Analysis of the primary damage mode of imported bearings

Source: Bearing network time: 2014-11-02

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An imported bearing cannot be operated indefinitely; during the operation; the bearing will be damaged due to various reasons. If the device is not shiny, the smoothness is poor; the intrusion of moisture and dust, rust, electric corrosion, etc. can cause premature bearing damage. In the case of the device, smooth, and normal protection; after the operation at a certain time; it will also show fatigue and wear, and the bearing will not work properly.
The primary damage to rolling bearings is as follows:
1. Weakness falls off in imported bearings; touch appearance and relative movement of the touch surface (raceway or tumbling external surface); due to repeated acceptance of the load; first under the surface; must be at the depth; some weaker ones constitute a crack. Carry out to touch the appearance; make the surface metal into a sheet-like recording; the bearing can not work properly; this appearance is called fatigue and shedding.
2. Plastic deformation (Eternal deformation)
After the roller bearing receives the load; plastic deformation occurs at the roll body and the track touch. When the load is too heavy; the plastic deformation pit will be formed on the outer surface of the raceway; and the imported bearing will have severe oscillation and noise during operation.
3. Wear due to the relative movement of the rolling body and the raceway and the intrusion of dirt and dust; the wear of the roll body and the raceway is worn out. When the wear amount is large; the bearing clearance, noise, and oscillation are increased; The accuracy of the work; therefore directly affects the accuracy of some of the mainframes. Because of the bearings for some precision machinery; the amount of wear can be used to limit the life of the imported bearings.

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