How many bottom rollers does a 20-ton excavator have?

Expert_Answer

A 20-ton excavator typically has 7 to 9 bottom rollers per side, so 14 to 18 total on the undercarriage. The exact number depends on the machine’s make, model, track frame design, and undercarriage configuration. Some models with a longer track frame or heavier-duty carriage may use more rollers to spread the load and support track tension, while compact or shorter-frame machines may use fewer. If you need the correct replacement roller count or want to match parts to a specific excavator, the best approach is to check the machine serial number or parts catalog. VANROCK supplies bottom rollers and other undercarriage parts for 54+ machinery brands.

Answered by VANROCK specialists · Published 7/20/2026