The main transmission structure of planetary reducer is: planetary gear, sun gear and external gear ring.
For structural reasons, the minimum single-stage deceleration of planetary reducers is 3, and the maximum is generally not more than 10. The common deceleration ratio is 18.104.22.168.8.10, and the number of stages of reducers is generally not more than 3, but some customized reducers with large deceleration ratios have 4 stages of deceleration.
Compared with other reducers, the planetary reducer has the characteristics of high rigidity, high precision (single stage can be less than 1 minute), high transmission efficiency (single stage is in ninety-seven percent-98%), high torque/volume ratio and lifetime maintenance-free.
Because of these characteristics, planetary reducers are mostly installed on stepping motors and servo motors to reduce the speed, increase the torque and match the inertia.
The maximum rated input speed of the reducer can reach more than 18000rpm (related to the size of the reducer itself, the larger the reducer, the smaller the rated input speed), the output torque of the industrial planetary reducer generally does not exceed 2000Nm, and the specially designed planetary reducer with super-large torque can reach more than 10000Nm. The working temperature is generally around -25℃ to 100℃, and its working temperature can be changed by changing the grease.
The internal gear of planetary reducer is carburized, quenched and ground by 20CrMnTi, which has the characteristics of small volume, light weight, high bearing capacity, long service life, stable operation, low noise, large output torque, large speed ratio, high efficiency and safe performance. It has the characteristics of power splitting and multi-tooth meshing. It is a new type of reducer with wide versatility. The maximum input power can reach 104kW.
It is suitable for lifting, transportation, engineering machinery, metallurgy, mining, petrochemical industry, construction machinery, light textile, medical instruments, instruments, automobiles, ships, weapons and aerospace industries, and other industrial sectors, such as the new planetary series fixed-axis drive reducer, WN master-slave gear drive reducer and elastic load-sharing reducer with small tooth difference.
Planetary gear reducer has the characteristics of light weight, small volume, large transmission ratio range, high efficiency, stable operation, low noise and strong adaptability. Reducers are widely used in metallurgy, mining, lifting and transportation, electric power, energy, building materials, light industry, transportation and other industrial sectors.