3112645 GEAR PLANETARY For HITACHI ZX670LC-5B 6WG1

Planetary gear is a special gear system. Its characteristic is that the rotating axis of the gear is not fixed, and it is installed on a rotatable bracket. It can not only rotate around its own rotating axis like a fixed-axis gear, but also rotate around the axes of other gears with the planetary carrier, which is similar to planetary motion in the solar system. Therefore, this design makes the planetary gear have the advantages of small volume, light weight, large speed ratio and high efficiency, and is widely used in aviation, ships, automobiles, lifting machinery and other fields.