CRUSHER

The invention relates to machine-building industry, to devices for materials crushing and may be used for crushing of metal cutting, polymeric materials and wood waste at the enterprises of machine-building, chemical and woodworking industry. The crusher comprises a loading hopper, a cylindrical housing with cutters, a rotor with cutters, a perforated bottom and a reversible drive. The housing is formed from two mating surfaces, by a guideline, one of them is an arc and other is a ring. Inside rows of teeth are located at the first of named surfaces in parallel to a rotor shaft axis, and the housing is mounted on the rotor shaft with possibility of rotation and fixation. Such execution of the invention allows to increase crushing efficiency and to extend sphere of the device use.