The reducer motor is composed of a reducer (gear box) + a motor. The motor can provide high-speed speed, but the torque is small, and the generated motion inertia is quite large; the function of the reducer is to control the reduction of speed, increase torque, and reduce movement The generated inertia has reached the ideal speed and torque; it is generally used for low-speed and high-torque transmission equipment. The power of the motor running at high speed is achieved by meshing the large gear on the output shaft with the gear on the input shaft of the reducer. The purpose of deceleration; for example, solar tracking systems and electric rolling gates all use decelerating motors with low speed and large torque.