A gear reducer is a mechanism that uses gears of different sizes or different numbers of teeth to achieve speed conversion and torque amplification. It consists of a motor and a set of gear devices, and the reduction effect is achieved through the meshing and rotation of the gears. It has the characteristics of simple structure, smooth operation, and high transmission efficiency. Gear reducers can handle large torques and are suitable for large mechanical equipment and heavy load conditions. In addition, gear reducers can provide a variety of speed ratios, making them widely used in various application scenarios.