The application of bearings is very wide and varied, but the fish beads on the market are mixed, and it is inevitable that the bearing quality will not be closed. So, how to distinguish the bearing is good or bad?
1, whether the packaging is clear:
Under normal circumstances, the regular manufacturers of the brand have their own specialized designers to design for external packaging, and arrange production conditions for the factory to produce production, therefore, the product packaging from the line to the color should be very clear, unambiguous.
2. Is the stenciled character clear:
Each bearing product will have its brand name, label, etc. printed on the body of the bearing product. Although the fonts are very small, the products made by regular manufacturers all use the stencil printing technique and they are pressed before the heat treatment. Therefore, although the font is small, it is very dark and very clear. Under normal circumstances, the fonts of counterfeit products are not only blurred, but due to the rough printing technology, the fonts float on the surface, and some of them can easily be wiped off by hand or severely traced by hand.
3, whether there is noise:
The left hand holds the bearing body sleeve, and the right hand toggles the jacket to rotate, and hears whether there is any noise in the bearing during operation. Since most of the counterfeit products have backward production conditions and are completely hand-operated, the bearing body will inevitably contain impurities such as dust and sand during the production process. Therefore, when the bearing rotates, there will be a phenomenon of noise or non-smooth operation. . This point is the key to judging whether the product comes from the strict production standards and the regular manufacturer's branded products that are operated by machines.
4, whether the surface has muddy oil traces:
Whether the surface has cloudy oil traces requires us to pay special attention when purchasing imported bearings. Since the current domestic rust-proof technology still has a certain gap with foreign advanced manufacturing countries, it is easy to leave a thick oil trace on the bearing body when it is subjected to rust-prevention treatment, and it feels sticky and thick when touched by hand. Almost no trace of anti-rust oil can be seen on the imported bearings. According to industry insiders, people with special care can smell a special smell on imported bearings, which is the taste of anti-rust oil.
5, whether the chamfer is even:
The so-called chamfering of the bearing, that is, the intersection of the lateral surface and the vertical surface, counterfeit bearing products due to the limitations of production technology, in these corners of the corner of the site to deal with unsatisfactory, we can easily identify this point.
