A cycloid gear transmission. This contact between the gear tooth surface stress is small, good wear resistance, no undercut phenomenon, but the manufacturing precision is high, the center distance error is very sensitive. Only used in watches and meters.

         For the transmission between the staggered axis. Single-stage transmission ratio can be 10, the maximum to 100, the transmission power to 750 kilowatts, transmission efficiency is generally 0.9 to 0.98, the peripheral speed to 30 m / s. Due to the axial offset distance, pinion cantilever mounting can be avoided. Widely used in automotive and tractor drive.