Wheel bearing broken what symptoms how to determine the wheel bearing broken inspection method

Hub bearing, this slightly stubborn part, do you know what it is?Bearing, is a kind of basic parts that will be used in industrial areas, since it is basic, its importance is certainly self-evident.

In cars, there are bearings, and the engine gearbox has dozens of bearings.So what exactly is a hub bearing?Today the little brother will take you to understand this tightly hidden wheel hub bearing!

 

1. What is the hub bearings?

The hub bearing is a key component of the car, which is a part connecting the tire / brake disc to the steering section.Its main role is to carry the load weight, and to provide precise guidance for the rotation of the hub.Its mission determines that it needs to withstand not only axial loads, but also radial loads.

 

1. Development history of wheel hub bearing

There is always a same thing and a historical process, and the hub bearing, parts products will be constantly updated and iterated to accommodate a variety of different machines.

 

Hub bearing is developed on the basis of the other two bearings, respectively, conical roller bearing and standard angle contact ball bearing, it makes these two sets of bearings, making it have light weight, large load capacity, good assembly performance, compact structure, omitted travel gap adjustment, omitted external hub density and other advantages, which also determines that it will be widely used in automotive parts.

 

III. Daily maintenance of wheel hub bearings

The hub bearing maintains the responsibility of the car and reduces the friction resistance when the chassis runs.Daily maintenance is certainly essential, once the hub bearing fails, the most direct will cause noise, bearing heating and other phenomena.

 

Remove hub bearings

1. Remove the decorative cover and dust cover of the hub shaft head;
2. Remove the tire, but do not touch the thread of the tire bolt. If it is a disc brake, remove the brake, and then remove the lock ring or lock pin with the tool.

 

3. Remove the hub bearings with special tools;
4. Clean the old grease, clean with cleaner and wipe with a cloth rag, and finally wipe the bearing cavity with a cloth.
5. Check the hub bearing and bearing seat ring, and find cracks, fatigue peeling and loose bearing rollers, so the bearing shall be replaced.If hemp is found to be on the bearing ring, the bearing should also be replaced.

 

6. Check the coordination of the bearing inner diameter and the neck, and the coordination gap shall not be more than 0.10mm for measuring the neck, it shall be measured in the upper and lower parts of the vertical ground (the maximum wear part).If the clearance exceeds the specified limit, bearings shall be replaced to restore the normal clearance.Burr, tingling on the axial neck are not allowed to narrow the gap.

 

7. After all parts meet the requirements, the grease can be put into the hub.
8. Also pay attention to when applying grease, the amount of daub is also required, it needs you to apply from one end of the bearing to the other side of the bearing, until it comes out, but do not apply too much in the cavity.

 

9. Reinstall the wheel hub and the outer shaft to the shaft diameter, screw the shaft adjustment nut with the hand, and then tighten the adjustment nut with the shaft wrench according to the specified torque.After tightening the nuts, the hub should be rotated several laps to the left and right to see the bearing installation; on the other hand, the bearing shall cooperate correctly with the seat ring by turning.The bearing tightness is appropriate and the wheel is free to feel the axial clearance.

 

10. Finally, install lock pads, fixed nuts, tires, dust covers and decorative covers.
11. After adjusting the hub bearing, drive for a distance (about 10km), stop and check, and wipe the hub temperature by hand. If the heat is caused by excessive bearing adjustment, you should adjust and relax the bearing tightness appropriately.

 

After reading these, I do not know if everyone is this hub bearing has a little more understanding?Car maintenance is a continuous work, usually maintenance is good plays a great role in safe driving, so the majority of owners, or to pay more attention to the daily maintenance of the car oh.