The main transmission structure of the planetary gear reducer is: planetary gear, sun gear, outer ring gear. Due to structural reasons, the planetary reducer has a minimum of 3 for single-stage deceleration and a maximum of 10 for maximum. The common reduction ratio is 3.4.5.6.8.10, and the number of reducers is generally not more than 3, but there are some large reduction ratios. 4 levels of deceleration. Compared with other reducers, the planetary reducer has high rigidity, high precision (single level can be less than 1 minute), high transmission efficiency (97%-98% for single stage), high torque/volume ratio, lifetime maintenance free, etc. Features. Because of these characteristics, planetary reducers are mostly installed on stepper motors and servo motors to reduce the speed, increase the torque, and match the inertia. The rated input speed of the planetary reducer can reach up to 18000 rpm (depending on the size of the reducer itself, the larger the reducer is, the smaller the rated input speed is). The output torque of the industrial grade planetary reducer is generally not more than 2000 Nm. The special super-torque planetary reducer can be used. Do more than 10000Nm. The working temperature is generally between -25 ° C and 100 ° C. The operating temperature can be changed by changing the grease. The precision planetary reducer is very important because it is equipped with a servo motor. The backlash level (arc) is quite important. The price difference of different backlash grades is quite large. The planetary reducer can do multi-tooth box connection with the highest reduction ratio of 100,000. Concerned about surprises Tag: Overview of planetary gear reducers Previous: The difference between soft tooth surface and hard tooth surface of reducer Next: Definition and classification of precision reducer
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Overview of planetary gear reducers