When motor applied in industrial robot, we should mainly pay attention to the following basic performance of motor: It can start, stop and run clockwise and anticlockwise continuously , and has good feedback. The characteristics of clockwise and anticlockwise rotation are the same, and the running characteristics are stable. Easy to repair and no maintenance It has good anti-interference ability, and compared with the same output , the volume is smaller and the weight is lighter. More and more outer rotor BLDC and HB stepper are widely used in Robot, because they can meet the above requirements.