Hydraulic drive for extra high output and maximum torque performance. (from 55 to 200 kw, adjustable RPM from 10 to 110 RPM) WEIMA solid steel V-Rotor with 4 times revrsible concave knives and shock absorbing buffer system WEIMA Super-Cut system with adjustable counter knife Hydraulic pusher system with ram comb Screen front panel is easily removable for easy maintenance and screen replacement purposes. Electronic control box Heavy duty steel machine frame with encased rotor bearings fitted on the outside of the machine