From the high-speed power plant such as motor and internal combustion engine to the working end of the power plant, it needs a process of reducing speed and increasing torque. Reducer is the power transmission mechanism to realize this process.

Planetary reducer is a widely used industrial product. It has the advantages of small volume, light weight, high bearing capacity, long service life, stable operation and low noise. It has the characteristics of power split and multi tooth meshing. The large input power can reach 104kw. It is applicable to WGN fixed shaft transmission reducer, WN sub parent gear transmission reducer and elastic load small tooth difference reducer of new planetary Series in industrial departments such as hoisting and transportation, engineering machinery, metallurgy, mining, petrochemical industry, construction machinery, light industry and textile, medical instruments, instruments and meters, automobile, ship, weapon and aerospace.

Planetary reducer is a new reducer with wide universality. The internal gears are carburized, Quenched and ground by 20cvmnt. The whole machine has the characteristics of small structural size, large output torque, low speed ratio, high efficiency and reliable performance.

Related concepts:

Stage: number of sets of planetary gears. Because a set of star gears can not meet the larger transmission ratio, sometimes two or three sets are required to meet the requirements of users for larger transmission ratio. Due to the increase in the number of star gears, the length of stage 2 or 3 reducer will increase and the efficiency will decrease.

Return clearance: when the output end is fixed and the input end rotates clockwise and counterclockwise to produce the rated torque + - 2% torque at the input end, there is a small angular displacement at the input end of the reducer, which is the return clearance. The unit is "minute", which is one sixtieth of a degree. It is also called back gap.

The main transmission structure of planetary reducer is: planetary gear, sun gear and outer gear ring.

Due to the structure of planetary reducer, the single-stage deceleration is 3 small and generally no more than 10 large. The common reduction ratios are 3, 4, 5, 6, 8 and 10. The number of reducer stages generally no more than 3, but some customized reducers with large reduction ratios have 4-stage deceleration.