The core structure and transmission principle of planetary reducers

Planetary reducers, as a high-end subcategory of gear reducers, are named for their structure resembling "planetary motion". Their core structure consists of four major components: the sun gear, planetary gears, internal gear ring, and planetary carrier. The transmission principle can be summarized as "coordinated meshing and torque amplification":

Power input: The motor drives the sun gear (central gear) to rotate. The sun gear meshes with 3 to 6 planetary gears evenly distributed on the planetary carrier, driving the planetary gears to revolve around the sun gear. Please provide the text you would like translated.
Torque transmission: The planet gears simultaneously mesh with the fixed internal gear ring (external gear ring), generating a deceleration effect through the meshing of the tooth surfaces and transmitting the torque to the planet carrier. Please provide the text you would like translated.
Power output: The planetary carrier is rigidly connected to the output shaft, and the power is ultimately output in the form of low speed and high torque. Please provide the text you would like translated.
This "multi-tooth meshing" structure gives it unique advantages: compared with cylindrical gear reducers of the same specification, the load capacity of planetary reducers is increased by 40% to 60%, the volume is reduced by 30% to 50%, and the transmission efficiency can reach 97% to 99% (single stage). Moreover, during operation, the planetary gears are evenly stressed, and the vibration value can be controlled below 2.5mm/s, with a significant quieting effect (operating noise ≤ 65dB).