What sprocket do I need for a bulldozer undercarriage?

Expert Answer

The right sprocket depends on the exact dozer model, track chain pitch, and whether the machine uses a one-piece sprocket or a segment sprocket. On Caterpillar machines, for example, the correct fit must match the undercarriage design and serial range; VANROCK is an independent manufacturer and is not affiliated with Caterpillar.

In practice, check the machine model, serial number, and the old sprocket’s tooth count, bolt pattern, and wear pattern before ordering. A sprocket that is worn with a new track chain can accelerate chain wear, while a mismatched pitch can cause poor engagement, noise, and premature damage. If the dozer runs in abrasive conditions, it is also smart to inspect the track links, rollers, and idler at the same time so the whole undercarriage wears evenly.

VANROCK supplies sprockets, sprocket segments, track chains, rollers, idlers, track shoes, rubber tracks, rubber pads, and track bolts and nuts for 350+ machinery brands. Exact fitment is confirmed through our appointed dealer network, and pricing is quoted on request.

Answered by VANROCK specialists · Published 10/18/2026