Hdag Spare Parts Hub Axle Auto Hub Wheel Bearing for Chinese Car Geely Byd Chery JAC Xiali OEM 1064001293 69r-097-02cjh T11-3301210ab B11-3001030 3103101u7152

What is the third generation wheel hub bearing unit? What is the difference between the first generation and the second generation?Let Taizhou dongna Mech Electrical co ltd shares with you:What is a wheel hub bearing? Hub bearings are parts that connect tires (rotating parts)/brake discs (rotating parts) and steering knuckles (Knuckle, fixed parts). Its main function is to reduce friction for the rotating pair, and it also plays the role of transmitting torque. It bears very large radial load (vehicle weight) and axial load (lateral force of the tire or side impact force when turning).At present, domestic wheel hub bearings have reached the third generation, so what is the difference between the first, second and third generation hub bearings?The first generation of wheel hub bearings: The first generation of hub bearings are double-row angular contact ball bearings and double-row tapered roller bearings. In order to ensure that the preload is within the specified range after installation, the initial bearing clearance is preset, and there is no need to use a spacer to adjust the preload on the automobile assembly line. In addition, the hub bearing has its own sealing ring, which saves the manual external installation of the sealing ring. Generally applicable to: Santana 2000, Chery, Jetta, Passat B5, Mazda, Renault, Peugeot, Volkswagen Golf, Toyota RAV4, Ford, minivans and some heavy trucks, etc.Since the first-generation bearing is independent from the steering knuckle and the hub, when assembling online, it is necessary to press-fit the inner ring of the bearing to the hub (Hub), and press-fit the outer ring of the bearing to the knuckle (Knuckle). Due to the complex assembly process, the requirements for equipment and process control are relatively high. The second is poor performance. Due to the inaccurate control of the process during installation, the performance deviation of the bearing after press-fitting is also relatively large, and the overall performance is on the low side. Due to the above shortcomings of the first-generation bearings, its output has been declining year by year. Except that some car manufacturers still use the first-generation bearings for front wheel hub bearings based on cost considerations, they will gradually disappear in the end.Second-generation wheel hub bearings: On the basis of the first generation, the second-generation wheel hub bearings are mounted on suspension brackets with tapped holes and flanges for fixing nuts. The second generation wheel hub bearing is characterized by fewer assembly parts, lighter weight and easy installation. The outer ring of the second-generation wheel hub bearing has a flange, which is directly connected to the suspension through a screw (inner ring rotating type), or installed on the brake disc and steel ring (outer ring rotating type). The second generation hub bearings are generally applicable to: Volkswagen LT, Kia, Ford, Renault, Toyota, Nissan, Suzuki, Saab, Jetta, Lavida, polo, etc. Compared with the first-generation bearings, the process of pressing into the hub is omitted during assembly, but it still needs to be assembled with an interference fit with the steering knuckle, and the assembly accuracy is only slightly higher than that of the first-generation bearings. However, it also has the disadvantage of poor performance. At present, except that some car manufacturers still insist on using it on the rear hub, they are also used less and less like the first generation of bearings, and eventually die out.The third-generation wheel hub bearing: the third-generation wheel hub bearing unit with ABS sensor, the hub unit includes inner flange and outer flange, the inner flange is fixed on the rim (steel ring) with bolts, the outer flange and the outer ring of the bearing are set In one piece, mounted on the steering knuckle. The third-generation wheel hub bearings are generally applicable to many high-end cars such as BMW, Mercedes-Benz, Audi, Cadillac, Mazda, Ford, and Nissan. In terms of integration, the inner ring of the third-generation bearing integrates the wheel hub (Hub), and the outer ring integrates the flange connecting the steering knuckle, which can be connected with the steering knuckle by bolts. Assembly accuracy is greatly improved. And since all dimensions are precisely controlled at the supplier, performance is the best. Due to these two advantages, although the cost is slightly higher, the third-generation bearings are still favored by almost all mainstream car manufacturers.At present, many people in the industry are also studying further integration solutions. Someone proposed the concept of the fourth-generation bearing, which is to integrate the third-generation bearing with the constant velocity universal joint of the driving wheel. Others have proposed the concept of the fifth-generation bearing, which integrates the bearing with the brake disc. There should be no technical problems. As for whether it can be