High precision, high rigidity, high load, high efficiency, high speed ratio, high life, low inertia, low vibration, low noise, low temperature rise, beautiful appearance, light and small structure, easy installation, accurate positioning and other characteristics. Suitable for AC servo motor, DC servo motor, stepper motor, hydraulic motor speed up and deceleration drive. It is suitable for any driver product connection made by any manufacturer in the world, such as: Winmo, Panasonic, Delta, Yask