Planetary reducer is a widely used industrial product, which is small in size, light in weight, high in load-bearing capacity, long in service life, stable in operation, and low in noise. It has the characteristics of power splitting and multi tooth meshing for exclusive use. The maximum input power can reach 104 kW. Suitable for industrial sectors such as lifting and transportation, engineering machinery, metallurgy, mining, petrochemicals, construction machinery, light industry and textiles, medical equipment, instruments and meters, automobiles, ships, weapons, and aerospace. These planetary series new varieties include WGN fixed axis transmission reducers, WN mother and child gear transmission reducers, and elastic load less tooth difference reducers.

Planetary reducer is a new type of reducer with wide universality, and the internal gears are made of 20CvMnT carburizing quenching and gear grinding. The whole machine has the characteristics of small structural dimensions, high output torque, high speed ratio, high efficiency, and safe and reliable performance.

Grade: The number of sets of planetary gears Due to the inability of one set of star gears to meet larger transmission ratios, sometimes 2 or 3 sets are needed to meet the requirement of supporting larger transmission ratios Due to the increase in the number of star gears, the length of the 2nd or 3rd stage gearbox will increase and the efficiency will decrease

Return clearance: When the output end is fixed and the input end rotates clockwise and counterclockwise to generate a rated torque of+-2%, there is a slight angular displacement at the input end of the reducer, which is the return clearance The unit is' fen ', which is one sixtieth of one degree, also known as the back gap.  

Planetary gearbox structure

The main transmission structure of the planetary gearbox is: planetary gear, sun gear, and external gear ring

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

From a cost perspective, assuming a 0.4KW AC servo motor is paired with a driver, it would require one unit of equipment cost. A 5KW AC servo motor paired with a servo driver would require 15 units of cost. However, if a 0.4KW servo motor and driver are used, paired with a set of reducers, it would be possible to achieve the aforementioned 15 unit cost savings, saving over 50% in operating costs.      

Therefore, users can choose planetary gearbox products with different installation forms according to their different processing needs. Generally speaking, planetary reducers are mostly used in situations where low-speed, high torque, and high power density are required during machine operation.