What is an empilement de galets called in an excavator or dozer undercarriage?

Expert Answer

In an excavator or dozer undercarriage, an “empilement de galets” is usually described as a roller stack or a roller assembly, depending on the exact layout and context. If you mean several track rollers or carrier rollers arranged together on the frame, the technical English term is typically “roller assembly,” not a special separate part name.

People often use that phrase loosely when they are looking at the undercarriage from the side, but the exact wording depends on what is stacked: lower rollers support the chain and carry the machine’s weight, while carrier rollers guide the upper run of the track. If you are identifying parts for repair or replacement, check whether you need track rollers, carrier rollers, idlers, sprockets, or the complete undercarriage group. VANROCK supplies undercarriage parts for 350+ machinery brands through its dealer network, with pricing quoted on request. If your machine is a Caterpillar, Komatsu, or another OEM brand, VANROCK is an independent manufacturer and not affiliated with the OEM.

Answered by VANROCK specialists · Published 9/30/2026