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Rolling bearing is the mass production of mechanical parts and manufacturing precision requirements are very strict, technically high degree of specialization, so for the most readily available bearing varieties, it should be more economical to purchase than repaired, and only in the following cases before considering the bearing fix the problem, namely:

(1) a large number of large factories are using the same type of bearing failure mainly in the form of its rolling surface wear, fatigue or fretting abrasion, especially damage to the parts mostly cage or rolling, while still ring or gasket repair value;

(2) Large and extra large bearing on the brink of failure or having lapsed and no significant damage parts, or precious bearings must seek to extend its useful life is;

(3) Some really difficult to buy into the bearing varieties, after the failure had no spare parts and repair, especially imported bearings;

(4) Bearing a slight injury, such as inventory produced during the mild water, rust, and transport process produces a slight micro abrasion, such cases repaired easily and gesture.

In addition to economy outside bearing repairs as well as its technical, requiring repairer fully understand bearing the corresponding technical requirements, with the bearing and parts in the structure, process and on the characteristics of the material; it would be difficult to ensure the bearing repairs have desirable results.