Level 3 can make ac motor direct driving motor, or dc, only bigger output torque, low speed. Direct drive motor (= dc motorAc motor)+ machine of decelerate of planet of direct-drive motor drive because there is no clearance at the same time, so the control accuracy is second grade or grade a direct-drive motor selection aspects recommended cole Morgan. the main products: stepper motor, brushless motor, servo motor, stepping motor drive, brake motor, linear motor and other kinds of models of the stepper motor, welcome to inquire. Telephone: