The development trend of hub unit bearings

Lightweight and miniaturized

Finite element analysis must be carried out during the structural design of the second-generation and third-generation hub bearings. While ensuring sufficient rigidity of the flange, its volume and weight should be reduced as much as possible. The rigidity of the third-generation hub bearings is the hub method. The inclination angle of the flange relative to the outer ring flange. Through the integrated and miniaturized design to reduce the weight of the axle, the second-generation hub bearing is 180g lighter than the first-generation hub bearing, and the third-generation hub bearing is further reduced by 120g.

low friction torque

An important measure for Hub Unit Bearing suppliers to reduce automobile fuel consumption is to design wheel hub bearings with low friction torque, and the main factors affecting bearing friction torque are the type of bearing and preload, and bearing seals account for a large proportion of friction torque components. Therefore, improving the seal design to reduce the frictional moment can significantly improve the performance of the hub bearing. The hub bearing has been developed from the first generation to the latest fourth generation, and the friction torque is obviously gradually reduced.

ABS technology

ABS is a car safety control device with the advantages of anti-skid and anti-locking. When the car is in emergency braking, it can automatically adjust the braking force to prevent the wheels from locking and shorten the braking distance by detecting the wheel speed. The detection of rotational speed is carried out by the magnetic force sensor that is installed on the part that rotates with the wheel and is fixed on the car body nearby. The hub unit with ABS sensor is divided into two situations: one is placed inside the hub, and the sensor is installed on other parts; the other is placed inside the hub together with the sensor (called a hub unit with sensor).