Reducer is generally used in low speed high torque transmission device, the electric motor. The internal combustion engine or other high speed operating of power on the input shaft of the reducer gear of big gear on the output shaft gear mesh less to achieve the purpose of deceleration, ordinary there is few on the same principle of gear reducer and achieve ideal reduction effect, the size of the ratio of the number of teeth on the gears, transmission ratio.
The reducer is a relatively sophisticated machine, which is used to reduce speed and increase torque. It has a wide variety of models and different types of use. There are various kinds of reducers, which can be divided into gear reducer, worm reducer and planetary gear reducer. According to different transmission series, it can be divided into single stage and multistage reducer; According to gear shape, it can be divided into cylindrical gear reducer, taper gear reducer and cone - cylindrical gear reducer. According to the layout of transmission, it can be divided into expansion, split and coaxial reducer.