1. The outer package of bearings is clear or not

Usually, the brand is factory bearings have their own special design personnel for outer packaging design, and arrange suitable production conditions factory, so no matter from packing line to color piece are very clear, unambiguously, part of the accessories brand on the packing and special to protect their intellectual property of unique design.

2.  bearings steel word is clear or not

In the bearing with brand words, the label, etc. Font is very small, but are mostly use steel product factory technology, but without the overheating in before treatment for pressure word, so font although small, but concave deep, very clear. Fake products not only the font and fuzzy, due to the rough words printed technology, font float at the surface, some even easily can be erased by hand.

3.  bearing with noise or not

The left hand holding the bearing of the body, the right hand moving coat rotating, listen to any miscellaneous ring. Since most of the counterfeit products production conditions backward, fully manual mill operation, in the process of production will be hard to avoid mixed into the sand kind of impurities, hidden in bearing body, so in turns will issue miscellaneous ring. This is strictly carry out the production standard, and use machine operation is the biggest difference between the brand.

4. The surface of the  bearings is a murky oil stains or not

The  bearings in the purchase should pay special attention. Special care expert said the  bearings smells a kind of taste, affirmation is a temporary, just impossible to see.

 
5.      bearing chamfering whether even the so-called  bearing chamfering, also is the horizontal surface and the vertical junction, the fake  bearings because the production of technical limitations, in these fringes of parts processing unsatisfactory.
 
 



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