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Packaging is clear: in general, are factory brand has its own specialized design personnel external packaging design, and arrange for clearance of the plant production conditions of production, so the packaging from the line to the blocks of color are very clear, unambiguous. (part of the imported brand accessories packaging and designed with unique design, in order to protect their intellectual property. This will be more detail in the next content).
Seal the words are clear: in the bearings will be printed on the body words, brand label. Font is very small, but it is mostly used plants Chupin stamping technology, but without the heat-treatment is carried out before the embossing, so the font is small, but the concave too deep, very clear. The font counterfeit products not only fuzzy, due to rough printing techniques, fonts, floating on the surface, and some even can be easily wiped off by hand.
If there is a noise: the left hand holding the body bearing sleeve, right hand toggle coat make its rotation, listen to whether there are miscellaneous ring. As most of the backward condition of counterfeit products, completely hand workshop type operations, in the production process will inevitably impurity into the sand type, hidden in the bearing body, so the rotation will be issued when the noise. This is the largest and strictly execute machine operation production standards, and positive plants of different brands.
Whether there are muddy surface traces of oil: it should pay special attention to in the purchase of imported bearings. Because of the current anti rust technology is not the special home, so the bearing body for rust prevention processing is easy to leave a thick layer of oil stain, get in the hands of sticky stiff, and the bearing of foreign imported almost see the traces of rust preventive oil, pour is particularly careful imported bearings smell experts say there is a taste, is certainly the antirust oil, just impossible to see.
Chamfering is uniform: the so-called bearing chamfer, also is the horizontal and the vertical surface junction, counterfeit bearings due to the constraints of production technology, processing is unsatisfactory in these corners of the site.