1. Check whether the steel stamp is clear: bearing will print the words brand or label. The font is very small, but most products use steel stamping technology and press before heat treatment. Therefore, although the font is small, it is deep and clear. The fonts of counterfeit products are not only blurred, but also because of the rough printing process, the fonts float on the surface, and some can even be easily wiped with hands.
2. Check whether there is turbid oil stain on the surface: Since the current domestic anti-rust technology is not special, thick oil stains are easily left during the anti-rust treatment of the bearing body, which makes the hands sticky. However, there are basically no traces of anti-rust agent on the bearings imported from abroad. Pay special attention to this when purchasing imported bearings .
3. Check whether there is noise in laser cutting machine : hold the inner cover of the bearing with your left hand, rotate the jacket with your left hand, and listen for noise. Since most counterfeit products are lagging behind in production conditions and the manual workshop is fully operated, the production process will inevitably mix with sand impurities, hidden in the bearings, making noise when rotated. The difference between a regular manufacturer that strictly produces and operates with machines.
4. Check whether the chamfer of the laser cutting machine is symmetrical: the so-called bearing chamfer is connected to horizontal and vertical surfaces. Due to technical limitations, the corners and other positions are not handled in place. The angle between the horizontal and vertical planes of the workpiece is properly controlled during the cutting process. Intelligent operating system and adapted cutting parameters can minimize problems such as large heat impact and serious mechanical deformation. Its core control parameters are laser power and spot size.
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