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What’s Axle

Axles refer to the axle units within the running system of automobiles, and consist of components such as the axle case, gears and brakes. Axles are classified into the following types: front axle, rear drive axle and rear dead axle.

Key Features of Axle

Load-bearing capacity

bear and distribute the weight of the vehicle or equipment it is installed on. 


Axles are designed to withstand heavy loads, constant stress, and various environmental conditions. 

Power transmission

transmitting power from the engine to the wheels, enabling forward or backward movement. 

Production Process

An axle case is divided into upper and lower steel plates that are stamping. For large axle cases, steel plates 14 mm thick are heated and stamped with a large 3,000-ton press.
②Welding assembling
The stamping axle case, forged end tubes, and brackets are mostly assembled using arc welding. A robot is employed for the welding process to save on labor.
After the welding has been completed, the axle case undergoes machining and polishing on the end tubes (located at either end) and the mounting surface of the differential carrier (located in the center).
④Axle unit assembly
Such peripheral components as the differential gear, axle shaft, hubs, and brakes are mounted onto the axle case, then it is coated and finished.


In the majority of trucks, the front axle bears the vehicle’s weight and is responsible for steering. In all-wheel-drive vehicles, the front axle not only supports the weight but also distributes driving force to the front wheels.

As for the rear axle, it can be categorized into two types: the drive axle and the dead axle. The drive axle not only supports the vehicle’s weight but also transfers driving force to the wheels. On the other hand, the dead axle primarily assists in bearing the weight of the vehicle.

How To Maintain

  • Inspection: Regularly inspect the axle for any signs of damage, such as cracks, wear, or loose components. Pay attention to the bearings, seals, and brake components.
  • Lubrication: Proper lubrication is crucial for the smooth operation of the axle. Follow the manufacturer’s guidelines and regularly lubricate the axle bearings and other moving parts.
  • Cleaning: Keep the axle clean by removing any dirt, debris, or corrosive substances. Regularly clean the brake components to prevent the buildup of dust and other contaminants.
  • Alignment: Ensure the axle is properly aligned to prevent uneven tire wear and improve overall handling. If misalignment is detected, consult a professional for adjustment.
  • Regular Service: Schedule regular maintenance and service checks with a qualified technician to inspect and service the axle as needed. This will help identify any potential issues before they become major problems.

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