Description:
The planetary gear consists of a central sun gear, an outer ring gear, and several planet gears arranged in between them. The planet gears are mounted on a carrier, which allows them to rotate around the sun gear while also engaging with the outer ring gear. It is a disk-shaped structure that is connected to the output shaft of the gear system, which delivers the rotational power to other components in the machinery.

Attributes:
• The planetary gear system has high efficiency.
• Design allows for high torque transmission in a compact package.

Applications:
The planetary gears are used in automatic transmissions use drive swing planetary gears to achieve multiple gear ratios and improve fuel efficiency. It is also used in 320D3, 320D2, 320D2 L, 320D3 GC, and 323D3 Excavator.