Eaton Vickers Hydraulic Vane Motor, Design 20-29, 25M, 35M, 45M, 50M standard ... 46M, 51M for heavy duty bearing Eaton Vickers Hydraulic Vane Motor, Design 20-29, 25M, 35M, 45M, 50M standard ... cartridge units, with drive speed dependent on the motor size and gpm delivery to the inlet port. The ... principally consists of a ring, rotor, ten vanes and two pressure plates. The rotor is splined and mates with ...