Teach you several techniques to identify fire eyes Jinjin bearing quality

Bearings ("Bearing", Japan is called "Axis subject") is in the process of mechanical transmission fixed and reduce the load coefficient of friction components. Can also say that when the other parts in the shaft relative motion, used to reduce friction during power transmission coefficient and holding shaft center position fixed parts. Bearings are one kind of modern machinery and equipment vital components. Its main function is to support the mechanical rotating body, the drive device for reducing the mechanical load during the friction coefficient. According to the different nature of friction of moving parts, rolling bearings and plain Bearing manufacturer can be divided into two categories. But how to determine the quality of the bearing it? Here are some bearing quality inspection method steps skill.
1. The packaging is clear: Under normal circumstances, are factory brand has its own dedicated designer of external packaging design, production conditions and arrangements for making the production of the factory clearance, so in terms of packaging lines to color are very clear, milli unambiguous. Seal word is clear: the bearing body will be printed with the brand words, labels and so on. Font is very small, but most are factory produced using Seal technology, but without the heat-treatment is carried out before the word pressure, so the font was small, but a deep concave, very clear. The font counterfeit products not only blurred, because the rough printing technology, fonts floating on the surface, and some can even be easily wiped off by hand.
2 Is there a hybrid ring: left hand holding the sleeve bearing the body, right hand to rotate toggle coat, listen to whether there is a hybrid ring. As most of the counterfeit products behind the production conditions, completely hand-mill operation in the production process will inevitably distracted by a class of impurities in the sand, hidden in bearing the body, so the rotation will be issued when hybrid ring. This is strictly enforced and production standards, and with the machine operation is the biggest difference between brands.
Is there muddy surface traces of oil: This is the purchase of imported bearings should pay special attention. Because of the current anti-rust technology also 3 is not particularly home, so the bearing body rust treatment can easily leave traces of oil thick, sticky thick stick in your hand, and foreign imported bearings almost see traces of rust oil, experts say that it touches especially careful Bearing smells kind of taste, is certainly under anti-rust oil, but do not see it. Chamfer is uniform: the so-called bearing chamfer, which is horizontal plane and the vertical plane of the junction, counterfeit bearings as restrictions on production technology, in which the corners of the site handled unsatisfactory.