How to distinguish the quality of bearings
In order to identify the quality of equipment bearings, start from the following aspects:
1. Whether the outer packaging is clear
Under normal circumstances, brands produced by formal manufacturers have their own professional designers to design the outer packaging, and arrange to meet the production conditions of the factory production. Therefore, the product packaging should be very clear from the line to the color block.
2. Are the steel marks clear
Each bearing product will be printed on the body of the bearing product with its brand name, label, etc. Although the font is small, products produced by legitimate manufacturers are printed using steel stamping technology and the font is pressed before heat treatment. As a result, although the font is small, it is deeply concave and very clear. More often than not, counterfeit products are not just blurry. Due to rough printing techniques, fonts float on the surface, and some fonts can even be easily erased by hand or have severe hand marks.
3. Is there any noise
The left hand holds the inner sleeve of the bearing, the right hand rotates the sleeve to make it rotate, and listens to the noise during the running of the bearing. Because most of the counterfeit products are produced under backward conditions, they are entirely manual and workshop operations. In the production process, the bearing body will inevitably be mixed with dust and sand and other impurities. Therefore, when the bearing rotates, noise will be generated or the operation is not smooth. This is the key to determining whether a product comes from a legitimate manufacturer's brand with strict manufacturing standards and is operated by a machine.
4. Whether there is muddy oil on the surface
Whether there is turbidity oil on the surface, which requires us to pay special attention to the purchase of imported bearings. Because there is still a certain gap between domestic rust prevention technology and foreign advanced manufacturing countries, the bearing body is easy to leave thick oil when rust prevention, and there will be a sticky feeling when touching with the hand. There is almost no trace of anti-rust oil on the original imported bearings. According to industry insiders, especially careful people can smell a special smell on imported bearings, that is, the taste of rust prevention oil.
5. Whether the chamfer is even
The so-called bearing chamfer refers to the junction of the horizontal plane and the vertical plane. Due to the limitations of production technology, counterfeit bearing products are not handled well in these corners. We can easily tell the difference.