Automatic control by microcomputer (PC), with functions of start, stop, reverse, overload automatic reverse, feature return and over-loading returns automatism, with characteristics of big torque in low speed, low noise. Suitable for crushing the solid material like television, washing machine, shell of refrigerator, medium size pipe, pipe fittings, forklift splint, tyres, packing barrel. Based on the original machine, closed-circuit crush until to the setting standard by rotary screen