The four-wheel and one-belt system of an excavator is a crucial part of its travel mechanism, including the drive sprockets, idler wheels, carrier rollers, track rollers, and tracks. They work together to ensure the excavator operates stably on various complex terrains.

Drive Sprockets: Drive sprockets are key components that provide power, usually installed at the rear end of the excavator’s chassis. They drive the tracks through a hydraulic motor or engine, enabling the excavator to move. Drive sprockets are designed to have high strength and wear resistance to withstand significant torque and complex working environments.

Idler Wheels: Idler wheels are located at the front end of the tracks and primarily serve to guide and tension the tracks, preventing them from derailing during operation. Idler wheels are typically made of high-strength steel to withstand harsh working conditions.

Carrier Rollers: Carrier rollers are installed above the tracks to support the tracks and the machine’s weight, ensuring the tracks run smoothly. The number of carrier rollers varies depending on the excavator model, with common excavators typically equipped with 2-4 carrier rollers.

Track Rollers: Track rollers are distributed beneath the tracks, making direct contact with the ground and bearing most of the excavator’s weight. They ensure smooth track operation and reduce ground-induced wear on the tracks. Track rollers are typically made of wear-resistant materials to extend their service life.

Tracks: Tracks connect the four wheels and are critical components that directly affect the overall performance of the excavator. Tracks are usually made of high-strength rubber or steel, offering excellent wear resistance and impact resistance.

In summary, drive sprockets, idler wheels, carrier rollers, track rollers, and tracks collectively form the excavator’s four-wheel and one-belt system. Their proper design and maintenance are essential for the efficient operation of the excavator.Download our product catalog for more product information