The issue of wheel hub machine repair

2024-09-18

Wheel hub mechanical repair mainly involves the following problems:

I. Wheel hub deformation

Causes:
- When a vehicle is driving, passing through potholed roads at high speed, hitting curbs and other situations may cause the wheel hub to be subjected to a large impact force and deform.
- Frequent hard braking may also cause uneven stress on the wheel hub, resulting in deformation.
Impacts:
- Wheel hub deformation will cause the vehicle to shake when driving, especially more obvious when driving at high speed.
- It will affect the normal wear of tires, making the tires wear unevenly and shortening the service life of tires.
- Severe deformation may also affect the vehicle's handling performance and reduce driving safety.
Repair methods:
- For slightly deformed wheel hubs, professional wheel hub shaping equipment can be used for repair. This equipment uses hydraulic or mechanical force to restore the deformed wheel hub to its original shape.
- If the deformation is more serious, a new wheel hub may need to be replaced.

II. Wheel hub cracks

Causes:
- As with external impacts, such as collisions with other objects and being subjected to a large impact force, may cause cracks in the wheel hub.
- Poor wheel hub material or defects in the manufacturing process may also cause cracks during use.
Impacts:
- Wheel hub cracks will seriously affect the strength and safety of the wheel hub, and may cause the wheel hub to break at any time, leading to a serious traffic accident.
Repair methods:
- For smaller cracks, welding can be used for repair. However, this repair method needs to be operated by professional technicians, and the strength of the repaired wheel hub may be reduced.
- If the crack is large or located at a key position, it is generally recommended to replace the wheel hub with a new one.

III. Out-of-round wheel hub

Causes:
- Long-term driving on poor road conditions, the wheel hub is subjected to uneven external forces, which may cause the wheel hub to be out of round.
- Improper operation when installing tires may also cause the wheel hub to be out of round.
Impacts:
- An out-of-round wheel hub will cause obvious shaking of the vehicle during driving, affecting driving comfort and safety.
- It will accelerate the wear of components such as tires and suspension systems.
Repair methods:
- Professional wheel dynamic balancing machines can be used for detection and repair. By adding balance weights to the wheel hub, adjust the balance state of the wheel hub to make it as close to a circle as possible.
- If the out-of-round is serious, a new wheel hub may need to be replaced.

IV. Loose or damaged wheel hub bolts

Causes:
- During vehicle driving, due to vibration and other reasons, wheel hub bolts may gradually loosen.
- Improper torque when installing wheel hub bolts may also lead to loose or damaged bolts.
Impacts:
- Loose wheel hub bolts will make the connection between the wheel hub and the axle not firm, and may cause the wheel hub to fall off, leading to a serious accident.
- Damaged bolts may affect the installation and removal of the wheel hub, increasing the difficulty of maintenance.
Repair methods:
- Regularly check the tightness of wheel hub bolts and tighten them in time if they are loose. When tightening the bolts, the operation should be carried out according to the specified torque to avoid excessive or insufficient torque.
- If the bolt is damaged, it should be replaced with a new bolt in time.

V. Wheel hub bearing failure

Causes:
- Lack of lubrication, water ingress, and impurities such as dust entering the bearing may cause damage to the wheel hub bearing.
- Long-term high-speed driving, overloading, etc. will also accelerate the wear of wheel hub bearings.
Impacts:
- Wheel hub bearing failure will cause noise and vibration when the vehicle is driving. In severe cases, the wheel hub will not rotate flexibly, affecting the driving performance of the vehicle.
Repair methods:
- For slight bearing wear, lubricating oil or replacement grease can be added for repair.
- If the bearing is seriously damaged, a new wheel hub bearing needs to be replaced. When replacing the bearing, a reliable product should be selected and installed by professional technicians.