What is a segment group for a crawler tractor undercarriage?

Expert Answer

A segment group is the bolted drive ring that transfers final-drive power to the track chain on a crawler tractor. It works with the track bushings and sprocket teeth to move the machine and is a wear part that should be replaced when the tooth profile becomes hooked, thin, or uneven.

On dozers and track-type tractors, the segment group is selected to match the machine model, bolt pattern, and track system. Common signs you may need replacement are poor engagement, slippage under load, abnormal vibration, or accelerated wear on the bushings and drive teeth. When checking fitment, confirm the machine model and any part number from the existing segment, because even small differences in bolt circle or tooth count matter.

VANROCK supplies undercarriage parts for crawler machines, including sprocket segments and complete segment groups for many brands and models. If you are working on a Caterpillar machine, VANROCK is an independent manufacturer and is not affiliated with Caterpillar. Pricing and exact fitment are confirmed through our appointed dealer network on request.

Answered by VANROCK specialists · Published 11/2/2026