To identify the quality of bearing six big magic weapon

1, first look at the use of the bearing steel material, their major steel mills of the bearing was made, on the hardness and precision is higher than that of counterfeit bearings. 2 by high input labeling equipment, in order to set up the enterprise brand image, to prevent the product was fake, bearing manufacturers with the laser marking machine, hope to establish corporate image, in line with international standards, at the same time, with high input to control the product was fake, however, due to the laser marking machine using computer control, mark font, size, etc. Edit the advantages of convenient, not only can effectively prevent counterfeiting, adds difficulty to the counterfeiters. 3 observation method. Rolling bearing with the naked eye observation, inner and outer raceway should not crumbling and serious wear and tear, and in a circular groove; All the roller surface should be no spots, cracks and peeling phenomenon; Cage should not loose, without damage, did not wear out, and the roller clearance but big. 4 touch. Normal inner and outer race and rolling elements of bearing clearance is zero. 005-0. 010 mm. For a phase of the rolling bearing has been used, with inner race for the axial shaking fingers clench, should have no obvious kuang dynamic noise. 5 the rotation method. With one hand holding the bearing inner race, another hand rotating seat, bearing should be flexible rotation, and should not feel radial shaking. 6 also look at the price, of course if the price is lower than that of the normal lot may be fake advice not to buy, after all, you get what you pay for really high cost so very expensive, after all. Check, should combine the above five kinds of experience method, to facilitate the technical state of rolling bearing to make the right judgment. For tapered roller bearing, still should observe whether rolling body is located in the middle of the outer race, if you have moved forward, should not be more than 1. 5 mm in addition to the above method of identifying, also can tell from color, precision. At the same time can also refer to other brands imported bearing, * * * bearings iko bearings, Sweden, the United States TIMKEN bearing, Japan NSK bearings, koyo bearing method of authenticity. Buy bearing is need to pay attention to the quality,