High speed planetary gearbox

The high speed planetary gearbox is a transmission with a planetary gear. The high speed planetary gearbox is usually mounted on the back of the hydraulic torque converter to form the hydraulic automatic transmission. The planetary gear mechanism is named for its resemblance to the solar system. At its center is the solar wheel, which is surrounded by several planetary wheels that revolve around it. On the outside of the planetary wheel, there is a big toothed ring.