The main structure and characteristics of planetary gear main transmission structure: planetary gear, sun gear, a ring gear planetary gear because of structural reasons, single-stage reduction a minimum of 3, maximum is generally no more than 10, common reduction ratio is: 3.4.5.6 .8.10, reducer series is generally not more than three, but there are some large custom gear reduction ratio has four deceleration relative to other gear, planetary gear with high rigidity, high accuracy (single stage can be achieved within 1 minute) high transmission efficiency (a single stage in 97% to 98%), high torque / volume ratio, maintenance-free life and so on. Because of these characteristics, the planetary gear unit is installed on the majority of stepper motors and servo motors, to reduce speed, improve torque, inertia matching the highest gear rated input speed can reach 18000rpm (and gear itself the size, the greater the reduction machine, rated input speed smaller) above, the industrial stage planetary gear output torque is generally not more than 2000Nm, special large planetary gear torque than can be achieved 10000Nm working temperature is generally at about -25 ℃ to 100 ℃, grease can be changed by changing its operating temperature. Important advantages of the internal planetary gear reducer using carburizing and grinding 20CvMnT have small size, light weight, high load capacity, long life, smooth operation, low noise, output torque, speed ratio, high efficiency, safety and performance characteristics. Both the power split, with more teeth meshing characteristics alone. It is a broad versatility of the new gear. Maximum input power up to 104kW. Suitable for lifting and transport, engineering machinery, metallurgy, mining, petrochemical, construction machinery, textile, instrumentation, automotive, marine, and other industrial sectors planetary series of new varieties WGN fixed axis gear reducer, WN picture gear reducer , a resilient are contained less tooth difference reducer. Products are widely used: industrial machinery, plastics machinery, printing machinery, photographic plate, electrical equipment, medical equipment, burner, powder transportation, sewage treatment, textile and paper machinery and many other industries. Our products have passed CE, UL, 3C certification. Promises: products sold date, under normal use, one year warranty and lifetime maintenance.