Working Principle of Planetary Gearbox

Author : Mark Markus | Published On : 30 Oct 2024

The working principle of the planetary gearbox is to achieve the functions of deceleration and torque increase through the interaction of the planetary gear, sun gear and internal ring gear.

Specifically, there is an internal gear ring inside the planetary gearbox that is tightly coupled to the gear box housing, and there is a sun gear driven by external power in the center of the ring gear. Between the sun gear and the internal gear ring, there is a set of planetary gear sets, and these planetary gears float in between supported by the output shaft, internal gear ring and sun gear.

When external power drives the sun gear, the planet gears will rotate around the sun gear and revolve along the path of the internal ring gear. This movement causes the rotation of the planetary gear to drive the power output connected to the output shaft. In this way, the planetary gearbox is able to reduce the motor's speed to the required speed and increase the output torque‌.

Features of planetary gearboxes include:

‌High Precision‌: planetary gearboxes usually have high transmission accuracy and are suitable for application scenarios that require precise control.

‌High load-bearing capacity‌: Due to its structural design, the planetary gearbox can provide a large transmission ratio in a small space and has a high load-bearing capacity.

‌Smooth transmission‌: The planetary gearbox has smooth characteristics when transmitting power, and is suitable for equipment that requires smooth operation.