Common identification method of bearings

With the continuous increase in the number of domestic car ownership, the demand for the use of auto parts and auto accessories has also increased. However, there are many large and small accessories and supplies stores in bearing kingdom, and the goods are mixed, many counterfeit and shoddy products. Miscellaneous, causing the loss of the owner, and even serious people may lead to casualties. In order to let the owner know a certain understanding of the characteristics of the accessories and supplies of the various factory brands, from this week, the "Smart Consumption" section will be specially set up in the owner's page to introduce various types and major automobile brand accessories to the car owners. The way to distinguish. I hope that with the development of the column, the concept of respecting the brand, eliminating fakes and using genuine products can be deeply rooted in the hearts of the people. This is our hope and the direction of our efforts.

   It is no exaggeration to call a bearing a joint of a car. In a car, not only its four legs - the wheels need to use bearings but all the rotating parts of the machine are indispensable for the participation of the bearings, it is a very inconspicuous but significant thing in the transmission system. Because of the large amount of work, its wear is also relatively high, so replacing bearings is a common thing in car maintenance. Walking in the auto parts market, we found that the bearing stores that operate various brands are like a lot of hair. However, what is the quality of the bearings they sell, is it really like the brand on the packaging? This question is probably a lot of times in the minds of every car owner. Here are some common ways to identify the quality of the bearing: Whether the outer packaging is clear: Under normal circumstances, the factory brand has its own special designer to design the outer packaging, and arrange the production conditions of the factory to produce and produce, so the packaging From line to color, it is very clear and unambiguous. (There are also unique designs on the accessories packaging of some imported brands to protect their intellectual property rights, which will be introduced in detail in future content).

   Whether the steel printing is clear: brand words, labels and so on will be printed on the bearing body. The font is very small, but most of the products produced by the factory use the stencil technology, and the type is pressed before the heat treatment, so the font is small, but the recess is deep and very clear. The fonts of counterfeit products are not only blurred, but because of the rough printing technology, the fonts float on the surface, and some can even be erased by hand. Is there any noise: hold the inner sleeve of the bearing with your left hand, and turn the outer sleeve with your right hand to make it rotate to hear if it has noise. Since most of the counterfeit products are out of production conditions and completely hand-worked, it is inevitable that impurities such as sand will be incorporated into the bearing body during the production process, so that noise will be generated when rotating. This is the biggest difference between a factory brand that strictly enforces production standards and operates with machines.

   Whether there is turbid oil on the surface: this should be paid special attention when purchasing imported bearings. Since the current domestic anti-rust technology is not particularly good at home, it is easy to leave a thick oil trace when the bearing body is rust-proofed, and it is sticky and sticky on the hand, and the bearings imported from abroad are almost invisible. To the traces of anti-rust oil, it is particularly careful that the imported bearings smell a smell, and it is definitely anti-rust oil, just can't see it.

  Whether the chamfer is uniform: the so-called chamfer of the bearing, that is, the intersection of the horizontal surface and the vertical surface, the counterfeit bearing is unsatisfactory in the processing of these corners due to the limitation of production technology.