An internal gear ring is tightly integrated with the gearbox housing. At the center of the ring gear is a sun gear driven by an external power source. Sandwiched between these two components is a planetary gear set consisting of three gears evenly arranged on a carrier. This planetary gear set floats freely, supported by the output shaft, the internal gear ring, and the sun gear. When the input-side power drives the sun gear, it causes the planetary gears to rotate independently while simultaneously orbiting around the central axis along the path traced by the internal gear ring. The rotation of the planetary gears, in turn, drives the output shaft connected to the carrier, thereby transmitting power outward.

The internal gears of the planetary reducer are made of 20CrMnTi steel, which undergoes carburizing, quenching, and gear grinding. This design features a compact size, light weight, high load-carrying capacity, long service life, smooth operation, low noise, large output torque, wide speed ratio range, high efficiency, and safe performance. It also combines the advantages of power splitting and multi-tooth meshing. Key components such as low-speed gears, high-speed gears, and transmission shafts are fabricated from high-quality low- and medium-carbon alloy materials, including 18Cr2ni4WA, 42CrMo, and 40Cr. The tooth surface hardness ranges from HRC58 to 64. Planetary gear reducers boast characteristics such as light weight, compact size, wide transmission ratio range, high efficiency, smooth operation, low noise, and strong adaptability.

Feature

The transmission mechanism of planetary gear reducers differs from the conventional motion of traditional gears. Traditional gears rely solely on the contact surface between the pinion and the gear to transmit power, concentrating all the load at this single point of contact. As a result, these gears are more prone to friction and failure. In high-speed reduction ratios, multiple stages of gears must be interconnected, which not only occupies considerable space but also leads to increased frictional losses. Moreover, the backlash between each stage of reduction gears accumulates in geometric progression, significantly reducing overall efficiency. In contrast, planetary gear reducers distribute the load evenly across six contact surfaces among the sun gear, planet gears, and internal ring gear during operation. These contact surfaces are arranged uniformly around the internal gear’s circumference, providing a 360-degree distribution of impact loads. This design substantially reduces gear friction and virtually eliminates the risk of gear failure. Additionally, the planetary gears adopt a floating-motion design with extremely tight clearances, allowing each reduction stage to be connected simply through stepped teeth. Consequently, the overall volume of the reducer is considerably reduced, and its maximum efficiency can reach as high as 97%.

FACTORY EQUIPMENT