What is the typical phenomenon of pitting corrosion that is prone to occur in rolling bearings?

Why is pitting corrosion prone to occur on rolling bearings, and what are the typical phenomena?

The main reason for pitting corrosion on rolling bearings is material fatigue. Pitting corrosion is caused by the contact stress generated between the rolling 

elements and the inner and outer raceways of rolling bearings under load, which is cyclically changing. After working for a period of time, the local surface 

metal of the rolling element or raceway falls off, forming peeling pits. This phenomenon is called fatigue peeling, also known as pitting corrosion.

The typical phenomenon of pitting corrosion is the formation of cracks at a certain depth on the contact surface of rolling bearings after a period of operation, 

which gradually develop to the contact surface, causing the surface layer metal to peel off in a sheet-like form, forming peeling pits. This phenomenon can 

cause impact vibration of the bearing during operation, affecting the stability and service life of the bearing.

Pitting corrosion can cause vibration and noise in bearings during operation, affecting the stability and accuracy of the machine. Severe pitting corrosion can 

lead to bearing failure, requiring replacement of bearings, increasing maintenance costs and downtime.

Choose appropriate materials: Use high-quality bearing materials to ensure their fatigue strength and wear resistance.

Optimizing design and manufacturing processes: By optimizing design and manufacturing processes, stress concentration and material defects can be reduced.

Regular inspection and maintenance: Regularly check the working condition of bearings, promptly detect and handle early faults such as pitting corrosion.

Improve the operating environment: Avoid working bearings in damp and corrosive environments, and keep bearings clean and dry.

Reasonable lubrication: Ensure that the bearings receive sufficient lubrication, reducing friction and wear.