What are tracks on an excavator or dozer called, and what do they do?

Expert Answer

Excavator and dozer tracks are called track chains or continuous tracks; on rubber-equipped machines they are often called rubber tracks. Their job is to support the machine’s weight, spread ground pressure, and give traction on soft, uneven, or slippery terrain. VANROCK supplies undercarriage parts including track chains, track shoes, rollers, idlers, sprockets, rubber tracks, rubber pads, and track bolts and nuts for 350+ machinery brands.

In practical terms, the track system is what lets a crawler machine move and work without sinking as easily as a wheeled machine. The main parts work together: the track chain carries the load, the sprocket drives the chain, the idler guides it, and the rollers support it along the frame. On many machines, wear shows up first as loose tracks, uneven wear, noise, vibration, or frequent track derailment.

If you are checking a machine, look at pitch wear, bushings, rollers, idler wear, and track tension before deciding on replacement. The right solution depends on the machine model, working conditions, and whether you need steel or rubber track components. VANROCK sells through an appointed dealer network and quotes on request. If your machine is a Caterpillar, Komatsu, or another OEM brand, VANROCK is an independent manufacturer and is not affiliated with that OEM.

Answered by VANROCK specialists · Published 10/22/2026