Wear failure refers to the failure caused by the continuous wear of the metal on the working surface due to the relative sliding friction between the surfaces.Continuous wear and tear will lead to gradual damage of imported bearing parts and eventually lead to loss of dimensional accuracy of imported bearing and other related problems.- The wear may affect the shape change, with the increase of clearance and the change of working surface morphology, may affect the lubricant or make its pollution reach a certain degree, resulting in the complete loss of lubrication function, resulting in the loss of rotation accuracy of the imported bearing or even normal operation.

Wear failure is one of the common failure modes of all kinds of imported bearings.

Adhesive wear refers to the because of the friction surface microscopic bumps or foreign bodies make the friction surface is uneven, serious deterioration, the condition of lubrication for local friction heat production, easy to cause local deformation and friction surface friction welded phenomenon, serious when the surface of the metal ­ may be partial melting, contact surface forces from the local friction welding points on the matrix will be torn and increase the plastic deformation.This clingy -- torn -- clingy

The cycling process constitutes adhesive wear. In general, slight adhesive wear is called abrasion and severe adhesive wear is called bite.