Description Overview Vertical hopper feed opening 52 in x 54 in Cutting rotor with 37 replaceable cutterheads Rotor cutterhead speed: 120 to 140 rpm (low speed and low noise) Noise level: 60 to 70 dba Specifications 57 kw (91 hp) rotor motor Hydraulic process ram 10 hp, 2-speed turbo coupling, programmable Serial number: 6106010