What is the main part of the drive axle?

On the steep road surface of the mine heavy load downhill, in the muddy land where farmland is deeply flipped, and in the heavy load transportation scenarios of construction sites, the driving axle acts as the "central nerve" for mechanical power transmission, and its performance directly determines the reliability and operating efficiency of construction machinery. For enterprises focusing on the production of drive axles for construction machinery, agricultural machinery and mining machinery, a deep understanding of the core composition of drive axles is not only the basis of technological research and development, but also the key to meeting the needs of different working conditions. This article will systematically analyze the four core components of the drive axle and reveal its technical adaptation logic in various harsh environments.

The drive axle is a key transmission component connecting the gearbox and the drive wheels, and is mainly composed of four core parts: the main reducer, the differential, the half shaft and the drive axle shell. These components work together to complete the important functions of power transmission, speed adjustment, torque distribution and load support, ensuring the stable operation of the machinery under complex working conditions. The company has been deeply engaged in the industry for more than 30 years. With "scenario customization + core technology breakthrough" as the core, it has created high-quality engineering machinery drive axles and other products that are adapted to different harsh working conditions, and has provided stable power solutions to many machinery companies across the country. Our company incorporates customized technology into the research and development of various components of construction machinery drive axles, so that the products are more in line with the high-strength operation needs of engineering equipment:

The main reducer can be called the "power converter" of the drive axle. Its core function is to change the transmission direction, reduce the speed and increase the torque, and provide the machinery with appropriate driving force and driving speed.

Main reducer: Single-stage, double-stage, wheel-side reduction structures can be customized as needed, high-speed mode adapts to engineering equipment road transfer, low-speed mode torque increases by 40%, meeting the heavy-load operations of excavator lifting and excavation;

The differential acts as the "coordinator" of the drive axle, connecting the left and right half axles and allowing the wheels on both sides to rotate at different angular velocities, a function that is particularly important when turning mechanically. When mechanical turns, the inner and outer wheels are driving trajectories are different. The differential accurately distributes torque to ensure that the wheels always remain purely rolling, avoiding tire slippage and mechanical deviation.

Differential: For the complex construction environment of construction machinery, special differential locks for construction machinery drive axles are developed. The efficiency of escape when single-sided wheels are slipped is increased by 30%. At the same time, a reinforced seal structure is adopted to reduce dust and mud intrusion, and adapt to dust scenes such as construction sites and infrastructure sites;

The half-axis is a "bridge" of power transmission, which is responsible for transmitting the torque output from the differential to the drive wheels. According to the different load-bearing mode, the half-axis can be divided into three types: full-floating, semi-floating and 3/4 floating.

Half shaft: The half shaft of the construction machinery drive axle is precision-processed, and the fatigue strength is increased by 20% after special heat treatment. When adapted to high-frequency operation equipment such as excavators and graders, the service life is extended by 1.2 times compared with the industry average;

The drive axle shell serves as the "skeleton" of the drive axle, providing support and protection for all internal components while bearing mechanical vertical loads and road impacts.

Drive axle shell: The driving axle shell of the construction machinery uses high-strength low alloy steel material. Through robot welding + overall inspection, the welding strength is increased by 15%, and the impact resistance is adapted to the frequent start and stop of engineering equipment and the road bumps, with a factory pass rate of 100%.

Leading with technological innovation: The differentiated advantages of our engineering machinery drive axles

In order to continuously improve the competitiveness of construction machinery drive axles, our company has established a special technical research and development team to make key breakthroughs in materials and processes: Process upgrade: The main reducer gear of the construction machinery drive axle adopts a high-precision grinding process, and the transmission efficiency is increased to more than 96%, reducing power loss;

Customized services: For non-standard engineering equipment, it provides 72-hour fast proofing and 30-day batch delivery services for engineering machinery drive axles. The speed ratio and installation size can be adjusted as needed, and is suitable for special engineering models.

Work together for win-win: Construction machinery drive axles help customers create new value for efficient operation together

As of 2025, our company's engineering machinery drive axles and agricultural and mining drive axles products have covered many provinces and cities across the country and exported to Russia. Among them, engineering machinery drive axles have become a long-term partner of more than 10 leading domestic engineering machinery companies with their stable performance. In the future, our company will continue to focus on the integrated and intelligent research and development of engineering machinery drive axles, and plans to launch a new generation of engineering machinery drive axles to further improve the operating efficiency of equipment. If your company is looking for customized engineering machinery drive axles that are adapted to excavators, cranes and other equipment, or needs agricultural and mining machinery drive axles solutions, please contact us to obtain exclusive technical solutions and quotations!