Main reasons are the following:

1, part of the enterprise in the process of production bearing no strictly according to cleaning rust rules and the requirements of the antirust packing seal of the processes of bearing parts and assembly of the finished product bearing after treated against rust. Such as rings in the process of turnover time is too long, the outer circle of contact corrosive gas or liquid, etc.

2, part of the enterprise in the used in production, cleaning rust lubricating oil and the quality of the products of kerosene less than technology requirements.

3, because of bearing steel prices falling, causing the bearing steel mass falling. Such as steel of nonmetal impurity content on the high side (steel in the rise of sulfur content of their own resistance to corrosion materials performance down), metallographic organization deviation, etc. Is the production enterprise the use of the bearing steel source is more miscellaneous, steel quality is fish dragon fraud.

4, part of the enterprise environment condition is bad, the air harmful matter content, high flow field is too small, hard to effectively treated against rust. Plus the hot weather, production workers in violation of the phenomenon such as antirust rules also have exist.

5, some enterprise antirust paper, nylon paper (bags) and plastic tube etc packing materials do not comply with bearings rolling bearing oil seal antirust packing requirements is also one of the factors that cause corrosion.
6, part of the enterprise bearing of the collar is turning surplus and grinding surplus slants small, round the oxidation decarburization layer of skin, not completely remove is one reason.
 



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