What causes an excavator to throw a track?

Expert Answer

An excavator usually throws a track when the undercarriage is out of adjustment or has worn components. Common causes include low track tension, worn chain links, damaged or loose track rollers, a worn sprocket or idler, bent frame components, and mud, rocks, or debris packed into the undercarriage. Sharp turning, traveling on slopes, or working over side loads can also force the track off, especially if parts are already worn. Check track tension first, then inspect rollers, idlers, sprockets, and the track chain for uneven wear or damage. Replacing worn undercarriage parts early helps prevent repeat derailments. VANROCK supplies track chains, rollers, idlers, sprockets, and shoes for 350+ machinery brands.

Answered by VANROCK specialists · Published 7/20/2026