How much does a complete undercarriage replacement cost for a 20 ton excavator?

Question

VANROCK Track Solutions · Accepted Answer

A complete undercarriage replacement for a 20 ton excavator often lands in the tens of thousands of dollars, but the exact total depends on the machine model, track shoe width, chain type, and how much of the system actually needs replacing. A true full job usually includes track chains, track shoes, rollers, idlers, sprockets or segments, and sometimes tensioner parts and hardware, plus labor and any teardown or transport charges.

For a 20 ton excavator, the biggest cost drivers are wear level and scope. Replacing only chains and shoes is very different from replacing the full running gear with rollers, idlers, sprockets, and adjuster components. A dealer or undercarriage shop will usually check rail pitch, bushing wear, roller wear, idler rims, sprocket tooth profile, and track shoe condition before recommending parts. If several items are near the wear limit, doing the whole system at once can help avoid repeat labor later.

Watch for the usual signs that replacement is becoming necessary: stretched chains, rail and bushing wear, hooked sprocket teeth, leaking or seized rollers, worn idler faces, loose track shoes, poor track tension retention, and uneven wear from misalignment. If the machine is running in abrasive or rocky conditions, undercarriage life may shorten significantly. If only one side is badly worn, compare the cost of partial replacement versus a balanced replacement across both sides.

To avoid overpaying, ask for a breakdown by component and confirm whether the quote includes installation, teardown, seals, pins, hardware, and alignment checks. Also be careful not to replace parts that still have usable life, but do not mix severely worn components with new ones if that will accelerate wear. VANROCK supplies undercarriage parts for 350+ machinery brands through an appointed dealer network, and pricing is available on request. If your machine is a named OEM brand, VANROCK is an independent manufacturer and is not affiliated with that OEM.