减速 gears are commonly used in drive systems requiring low speed and high torque. They reduce the speed of motors, internal combustion engines, or other high-speed power sources by engaging fewer teeth on the input shaft with larger teeth on the output shaft, thereby achieving the desired reduction in speed. Standard reducers often utilize multiple pairs of gears with the same principle to achieve ideal减速 effects. The ratio of the number of teeth on the large and small gears is known as the transmission ratio. The main characteristic of worm gear reducers is their reverse self-locking function, allowing for a greater reduction ratio, with the input and output shafts not aligned on the same axis or plane. However, they are generally larger in size, have lower transmission efficiency, and lower precision. Harmonic gear reducers use the controllable elastic deformation of flexible elements to transmit motion and power, featuring a compact size and high precision. The drawbacks are that the flexible wheel has a limited lifespan, is not shock-resistant, and has较差 compared to metallic components. The input speed should not be too high.