Material is fed through the hopper in front of a hydraulically operated drawer, which pushes the material load-controlled onto the turning rotor. The fed materials are shredded between the rotor knives and a fixed counterknife bar. The drawer has stripping bars that prevent material from entering between the drawer and machine housing. Material can be removed with a spiral conveyor, suction device, or a conveyor belt or chain conveyor. Once the material is shredded, the machine will automatically shut off.