The internal meshing cycloidal rotor pump is a new type of internal meshing volumetric pump, in which the outer rotor has a circular arc tooth shape and the inner rotor has a short amplitude cycloidal shape.

Due to its simple structure, low noise, smooth oil delivery, good self-priming performance, and excellent high-speed characteristics, this pump is widely used in low-pressure hydraulic systems and can be used as a power pump, lubrication pump, and cooling pump. At present, this pump is gradually replacing CB type and KCB type 2CY type gear oil pumps.