Shimpo Planetary Gearbox is a kind of speed reducer that utilizes a planetary gear set for achieving high gear ratios in a compact design. It has a sun gear, a ring gear, planet gears, and a carrier. The sun gear is run by a motor and the planet gears rotate around it, meshing with the ring gear. This causes the carrier for rotating at a decreased speed. The Shimpo Planetary Gearbox is mostly utilized in industrial applications including automation, robotics, and machinery, where super torque and precision are needed in a small space.