The main function of hub bearings is to withstand loads and provide precise guidance for the rotation of the hub. It bears both axial and radial loads and is a very important component. Traditional automotive wheel hub bearings consist of two sets of tapered roller bearings or ball bearings. The installation, oiling, sealing, and clearance adjustment of bearings are all carried out on the automotive production line. This structure is difficult to assemble in automobile factories, has high costs, poor reliability, and requires cleaning, oiling, and adjustment of bearings during maintenance at repair points.
1、 The hazards of automotive bearings include
1. Abnormal friction between the brake hub and brake pads greatly increases driving resistance, hinders smooth rolling, and leads to a decrease in power;
2. Affects comfort, causing the vehicle to deviate and tire noise to increase;
3. Suspension damage, wheel mechanism damage, wheel hub detachment, and steering system malfunction.
2、 The method for detecting damage to car bearings is:
1. There is a buzzing sound and loud noise when the car is driving;
2. Place your left hand on the shock absorber spring and rotate the tire with your right hand. Vibration with your left hand can damage the front wheel bearings;
3. High heat generation, feel hot when touched by hand;
4. The steering wheel shakes while driving.
3、 Reasons for damage to automotive bearings:
1. Improper assembly adjustment and excessive axial clearance;
2. Poor lubrication, dry friction between rollers and raceways, causing sintering of automotive bearings;
3. The quality of the bearings themselves is problematic;
4. Unclean installation or foreign objects in lubricating oil;
5. The bearing box has poor shape.
