(The reducer) As an important transmission device, it is commonly used in scenarios with low speed and high torque. It can reduce the speed by engaging gears with fewer teeth on the input shaft with larger gears on the output shaft, thereby reducing the high-speed rotation of power sources such as electric motors and internal combustion engines. Typically, ordinary reducers achieve the desired speed reduction effect through several pairs of gears that follow the same principle, where the ratio of the number of teeth between the large and small gears is the transmission ratio. Essentially, a reducer is a power transmission mechanism that relies on gear speed converters to reduce the motor’s rotation speed to the required number of rotations and obtain a greater torque.
Reducers serve two major roles. First, while reducing speed, they can significantly increase the output torque; the torque output ratio is the motor output multiplied by the reduction ratio, but it should be noted that it should not exceed the rated torque of the reducer. Second, during the speed reduction process, it can reduce the inertia of the load, with the reduction in inertia being the square of the reduction ratio. Generally, motors have corresponding inertia values for reference.
There are many common types of reducers, including helical gear reducers, which cover (parallel shaft helical gear reducers), worm gear reducers, (spiral bevel gear steering boxes), and others, (planetary gear reducers), cycloidal pinwheel reducers, (worm and worm-wheel reducers), planetary friction-type mechanical continuously variable transmissions, etc.