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Bearing outer packaging is clear: Under normal circumstances, is the factory brand has its own design of the external packaging design, production and production conditions for clearance of the factory production, packaging, in terms of color from the lines are very clear, no vague.

Steel printing is clear: the bearing body will be printed on the brand words, labels and so on. Font is very small, but most of the products are produced using the Seal technology, but also in the heat treatment before the word is not carried out, so the font is small, but concave - deep, very clear. The counterfeit product font not only blurred, because the printing technology is rough, the font floating on the surface, and some even easily can be erased by hand.

Whether there is noise: left hand holding the body bearing sets, right hand toggle jacket to rotate, to listen to whether there is no noise. As most of the counterfeit products, production conditions are backward, fully hand-workshop operation, in the production process will inevitably be mixed with sand - a class of impurities, hidden in the bearing body, so when the rotation will be issued by the noise. This is the strictest implementation of production standards, and the use of machinery is the biggest difference between brand.

The surface is turbid oil traces: This should pay special attention when buying imported bearings. As the domestic anti-rust technology is not yet particularly home, so the bearing body rust treatment is easy to leave a thick traces of oil, take in the hand sticky - sticky thick, while the original foreign imports of bearings to see almost Less than the traces of anti-rust oil, it touches on the import of special care experts say that there is a taste of the bearing is definitely under the anti-rust oil, just do not see it.

Chamfer is uniform: the so-called bearing chamfer, which is the junction of the horizontal and vertical surface, counterfeit bearings due to production technology constraints, in the treatment of these edges and corners of the site was unsatisfactory.