This is the final drive system of heavy equipment, known as the planetary gear. A planetary gear system consists of three main components: a central "sun" gear, multiple "planet" gears, and a surrounding "ring" gear. The sun gear is at the center, while the planet gears revolve around it, meshing with both the sun and ring gears. This setup enables efficient torque transfer, as the planet gears engage with both the sun and ring gears simultaneously.
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