Concise elaboration is to reduce speed, increase torque, reduce inertia gear reducer is the use of all levels of gear transmission to achieve the purpose of reducing speed. Reducer is composed of gear pairs at all levels. For example, using small gear to drive big gear can achieve a certain purpose of deceleration, and then using multi-level such structure, you can greatly reduce the speed. Gear reducer is generally used for low speed and large torque transmission equipment, the motor. Internal combustion engine or other high-speed operation of the power through the reducer input shaft of the number of teeth on the gear meshing output shaft on the large gear to achieve the purpose of deceleration, ordinary reducer will also have several pairs of the same principle of gear to achieve the ideal deceleration effect, the ratio of the number of teeth of the size of the gear, is the transmission ratio Gear reducer is a kind of power transmission mechanism, the use of gear speed converter, the number of rotation of the motor to the desired number of rotation, and get the larger torque mechanism speed down and improve the output torque, torque output ratio according to the motor output by the reduction ratio, but pay attention to not exceed the rated torque of the reducer Slow down and reduce the load moment of inertia, moment of inertia of the reduce of reduction ratio of the square You can have a look at general motors has a numerical reducer type of moment of inertia General reducer with oblique gear speed reducer (including parallel shaft helical gear reducer worm reducer bevel gear reducer, etc.) planetary gear speed reducer cycloidal reducer worm gear and worm reducer Planetary friction mechanical stepless variable speed machine and so on the current performance of the better reducer: According to the working principle of speed reducer reducer are different difference, as the current performance better to belong to the planetary gear reducer, planetary gear reducer drive gear is gear, servo motor drive reducer round the sun, the sun wheel and drive support in round arm shelf of planets, planet wheel through its meshing with outer gear ring gear, drive and external tooth ring is connected to the output shaft , to achieve the purpose of reduction, reduction ratio and gear system specifications