What undercarriage parts are available for excavators?

Expert Answer

Excavator undercarriage parts usually include track chains, track shoes, track rollers, carrier rollers, idlers, sprockets or segment groups, rubber tracks, rubber pads, and track bolts and nuts. On many machines, the undercarriage also includes the track adjustment components that keep the chain properly tensioned.

In practical terms, the undercarriage is the full travel system that supports the machine and moves it across the ground. The main wear items are the parts that carry load and contact the ground most often: track shoes and pads for traction, track rollers and carrier rollers for support, idlers for guidance, and sprockets/segments for drive engagement. If a machine runs on rubber tracks, the equivalent wear parts are rubber tracks and matching rubber pads where applicable.

When choosing replacement parts, match the machine make and model, then confirm key dimensions such as track pitch, shoe width, roller diameter, idler style, and sprocket tooth profile. Small mismatches can cause poor fit, accelerated wear, noise, or track derailment. Common signs that parts may need attention include uneven track wear, loose or tight track tension, clicking or grinding during travel, vibration, chipped sprocket teeth, or rollers that no longer turn smoothly.

A few mistakes to avoid: do not assume all excavator undercarriages use the same shoe width or roller set; do not replace only one worn component if the rest of the system is near end-of-life; and do not overlook bolts, nuts, and tensioning parts, since they affect reliability and safety. For OEM names such as Caterpillar or Komatsu, VANROCK Track Solutions is an independent manufacturer and is not affiliated with the OEM.

VANROCK manufactures undercarriage parts for 350+ machinery brands and sells exclusively through an appointed dealer network, with pricing quoted on request.

Answered by VANROCK specialists · Published 7/26/2026