Bearing rust corrosion causes are many, mainly has the following six:

1, Some companies do not strictly in accordance with the procedures and cleaning rust rust seal packaging requirements for the processing of finished bearings bearing parts and assemblies after anti-rust treatment process in the production of bearings. The ferrule in turnover during the turnaround time is too long, the outer cylindrical contact with corrosive liquids or gases.

2 Quality, some enterprises rust lubricant used in the production of cleaning products such as kerosene reach technology requirements.

3, Since the bearing steel prices dropping lower and lower, resulting in bearing steel material gradually decline. Such as high levels of non-metallic inclusions in steel (steel elevated sulfur content in the material itself anti-corrosion performance degradation), microstructure deviation. Now, the company used steel bearing more miscellaneous sources, the quality of steel is fish and dragons mixed beads.

4, Part of the company's environmental conditions are poor, the high content of harmful substances in the air, working space too small to be effective rust treatment. Coupled with the hot weather, production workers in violation of regulations and so there are some rust present.

5, Some enterprises rust-proof paper, nylon paper (bags) and plastic tube bearings and other packaging materials do not meet the requirements of the rolling bearing seal rust-proof packaging is one of the factors causing corrosion.

6, Some enterprises bearing ring turning and grinding margin margin is small, cylindrical scale on the carbon layer is one of the reasons not fully removed.