What is a drum cutter for an excavator and how does it work?

Expert Answer

A drum cutter, also called a hydraulic rotary cutter head, is an excavator attachment that uses hydraulic power to spin two cutting drums fitted with picks or teeth. As the drums rotate, they grind, profile, and excavate material in a controlled way rather than breaking it with repeated impact. This makes drum cutters useful where you need precision, lower vibration, and a cleaner finished surface. Common applications include trenching, tunneling, scaling rock faces, demolition of concrete, and quarry or mining work in softer to medium-hard material. Performance depends on the excavator’s hydraulic flow, pressure, carrier weight, and the hardness of the material being cut. VANROCK manufactures and supplies hydraulic drum cutters for excavators and can help match the right cutter size, hydraulic setup, and tooth configuration for your job, along with practical sizing guidance and quotes.

Answered by VANROCK specialists · Published 8/10/2026