... .Simple structure, small size, light weight, large oilCycloid rotor pump rotor system with internal and external engagement structure, a small ... valley formed "hole" so that the efficiency of the pump down, and therefore its speed rarely exceeds 3000rpm, circumferential ... 5 ~ 6m / s or less. For cycloidal rotor pump, oil suction point range, in high-speed rotation, centrifugal force is conducive ...