The series self-braking three-phase saynchronous disc motor is a new kind of motor which is completely enclosed and self-cooled. This motor is characterized by its advanced technical performance, brand new structure, small volume, short axial dimension, great brake torque, quick braking and accurate positioning. It is also reliable to operate and easy to maintain. The motor can be started quickly and stopped suddenly or made positon precisely. The motor is excellent match for lifting machinery, press machine, building machinery, spinning machinery, printing machinery paper-shatleving machinery speed reducers blowers and the pumps, etc. And it has CE certificate.