... , 46M, 51M for heavy duty bearing Eaton Vickers Hydraulic Vane Motor, Design 20-29, 25M, 35M, 45M, 50M standard bearing, ... high performance vane motors, when properly installed in a hydraulic circuit, convert hydraulic power into rotary mechanical power. They are positive ... displacement, balanced cartridge units, with drive speed dependent on the motor size and gpm delivery to the inlet port. The units ...