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

Because of the structural reasons, the minimum speed reduction of the planetary reducer is 3, the maximum is not more than 10, the common deceleration ratio is 3, 4, 5, 6, 8, 10, and the reducer progression is generally not more than 3, but there are some large deceleration deceleration compared with the custom reducer.

Relative to other reducer, the planetary reducer has the characteristics of high rigidity, high precision (single level can be less than 1 minutes), high transmission efficiency (single stage in 97%-98%), high torque / volume ratio, lifetime free maintenance and so on.

Because of these characteristics, planetary reducer is mostly installed on stepper motor and servo motor to reduce rotation speed, torque and matching inertia.

The rated input speed of the reducer can be up to 18000rpm (related to the size of the reducer itself, the greater the reducer, the smaller the rated input speed) above, and the output torque of the industrial planetary reducer is generally not more than 2000Nm, and the special Super torque planetary reducer can do more than 10000Nm. The working temperature is generally between -25 and 100 C. the working temperature can be changed by changing the grease.

Several concepts about planetary reducer:

Series: the number of the planetary gear. Because a set of star gear can not meet the larger transmission ratio, sometimes 2 sets or 3 sets are needed to meet the requirement of supporting larger transmission ratio. As the number of star gears is increased, the length of the 2 or 3 speed reducer will increase and the efficiency will decrease.

Return gap: the output end is fixed, the input end clockwise and counter clockwise rotation, so that the input end produces torque Rated torque +-2%, the input end of the reducer has a small angular displacement, this angular displacement is the return gap. The unit is the "division", which is 1/60 of the once. It is also called the backlash.

Planetary reducer is a widely used industrial product. Its performance can be compared with other products of military products, but it has a price of industrial products and is used in a wide range of industrial applications.

The reducer is small in size, light in weight, high in bearing capacity, long in service life, smooth in operation and low in noise. It has the characteristics of power shunt and multi tooth meshing. The maximum input power is up to 104kW. It is suitable for heavy transportation, engineering machinery, metallurgy, mining, petrochemical, construction machinery, light industry and textile, medical instruments, instruments, vehicles, ships, weapons and Aeronautics and Astronautics and other industrial sectors, such as WGN fixed axis drive reducer, WN gear reducer, and elastic uniform load reduction reducer.

Planetary reducer is a new universal reducer. The internal gear is made of 20CvMnT carburizing, quenching and grinding. The whole machine has the characteristics of small structure size, large output torque, high speed ratio, high efficiency, reliable performance and so on. This machine is mainly used for the slewing mechanism of tower cranes, and can also be used as supporting parts for lifting, digging, transporting, building and other industries.