Axial piston fixed displacement motors, Series 20, are of swash plate design with a preset constant displacement, and they are intended for closed circuit operation. The output speed is proportional to the flow rate of the supplied fluid. The output torque is proportional to the difference between high and low-pressure sides of the fluid circuit. The direction of motor shaft rotation depends on the fact; into which port is led the pressure fluid. Frame sizes 20 - 23