Several misconceptions about the quality of imported bearings 1. According to the surface layer, the quality of the bearing is felt in the whole process of selling bearings in the market. Many customers say that if the surface layer of the bearing is bright, it will be cost-effective. It is wrong. The brightness of the bearing surface should be dark, which is caused by whether the stainless steel plate used for the bearing is qualified, its cutting process and commonly used cutting oil, of which the first two are dominant. 2. Whether the rounding is bright or not The rounding of the bearing does not determine the quality of the bearing, but it reflects the production and processing method of the bearing. The rounded corners are gray-black, indicating that the bearing has increased strength after heat treatment such as heat treatment. But some people think that the rounded corners are gray and black, which is not good-looking. Incomplete production and processing is a misunderstanding. 3. The integral ball bearing is superior to the two-body. Although the new technology and new technology use the integral ball bearing, it is only to save raw materials and improve the rotation performance of the two-body. Generally speaking, the service life of the bearing is related to three factors, one is the quality of the bearing itself. The second is to apply the natural environment. The third is the installation method.