How to identify the "Big Black" of counterfeit bearings?

According to the inspection of bearings in the market, there are currently eight kinds of fraudulent methods in bearing distribution: manufacturing bearings with iron and carbon steel (inadequate hardness) and repairing scrap bearings (inadequate precision); Trademarks, counterfeit internal and external packaging and certificates of products from famous manufacturers; counterfeit users, distributors, agents, and even stock shops of famous manufacturers; use defective bearings as genuine bearings; change ordinary bearings into D Grade bearings; fakes are mixed into good products; fakes sell at genuine prices, and genuine at grade D prices, using fake price books; if you want cheap products, you will give fakes, and if you want good quality, you will get genuine products.

Quality supervision experts remind consumers that when purchasing qualified bearings, they must first observe whether the outer packaging is clear. Most genuine products use steel stamping technology, and the characters are pressed before heat treatment. Therefore, although the font is small, it is deeply concave and very clear. . The fonts of the counterfeit products are blurry, floating on the surface, and some can even be erased by hand. Secondly, see if there are muddy oil stains on the surface. If the anti-rust technology is not enough, it is easy to leave thick oil stains, which will be very sticky in the hand. At the same time, pay attention to choosing products with uniform chamfering and no noise when rotating.