How to distinguish bearing quality

Here are some common ways to identify bearing quality:

Whether the outer package is clear: Under normal circumstances, the original factory brand has its own specialized designer to design the outer packaging, and arrange the production conditions to pass the production of the factory, so the packaging from the line to the color is very clear and unambiguous . (Parts of the imported brands have special designs designed to protect their own intellectual property, which will be introduced in detail in the future.)

Whether the stencil printing is clear: brand words, labels, etc. will be printed on the bearing body. The fonts are very small, but most of the products produced by the factory are stamped and printed without the heat treatment. Therefore, although the fonts are small, they are dark and very clear. The fonts of counterfeit products are not only blurred, but due to the rough printing technology, the fonts float to the surface, and some of them can even be erased by hand easily.

Whether there is noise: the left hand holding the bearing body sleeve, the right hand toggle the jacket to make it rotate, listen to it if there is noise. Since most of the counterfeit products have poor production conditions and are completely hand-worked, they will inevitably be contaminated with impurities such as sand and hidden in the bearing body during the production process. Therefore, they will give rise to noise when rotating. This is the biggest difference from a genuine factory brand that strictly enforces production standards and operates with machines.

Whether the surface has cloudy oil traces: This should pay special attention when purchasing imported bearings. As the current domestic rust-proof technology is not yet at home, it is easy to leave a thick oil trace on the bearing body when it is subjected to rust-proof treatment. It is sticky and sticky in the hand, and the foreign imported bearings are almost invisible. To the traces of anti-rust oil, it was particularly careful that experts say the imported bearings smelled like a taste, it must be under the anti-rust oil, but can not see it.

The chamfer is uniform: the so-called chamfer of the bearing, that is, the intersection of the lateral surface and the vertical surface, counterfeit bearings due to the limitations of production technology, in these corners of the corner of the site to deal with unsatisfactory.