... hydraulic motors ,it is simple in structure ,reliable in performance and greatly reduced in volume or weight7. A small kinematic ... . As the oil feed shaft and stator are in rigid connection ,the oil pipeline of this model ... displacements dual and trinal speeds ,it is wider in speed regulating range.11. Simple structure and easy ... ,0.3321016 4-250 938,49212.42QJM21-0.32 0.317,0.15851625 2-320 751,3768. ...