Main structure and characteristics of planetary reducer

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

Due to structural reasons, planetary reducers have a minimum single stage reduction of 3 and a maximum reduction generally not exceeding 10. The common reduction ratio is 3.4.5.6.8.10, and the number of reduction stages generally does not exceed 3. However, some customized reducers with large reduction ratios have a 4-stage reduction

Compared to other reducers, planetary reducers have the characteristics of high rigidity, high precision (up to 1 point per stage), high transmission efficiency (97% -98% per stage), high torque/volume ratio, and lifelong maintenance free

Due to these characteristics, most planetary reducers are installed on stepper and servo motors to reduce speed, increase torque, and match inertia The maximum rated input speed of the reducer can reach 18000rpm (depending on the size of the reducer itself, the larger the reducer, the lower the rated input speed). The output torque of industrial grade planetary reducers generally does not exceed 2000Nm, and specially designed super large torque planetary reducers can achieve 10000Nm or above. The working temperature is generally around -25 ℃ to 100 ℃, and its working temperature can be changed by changing the lubricating grease