CZPT Danfoss SMF CZPT Axial Piston Concrete Motor SMF2 SMF20 SMF21 SMF22 SMF23 SMF24 SMF25 SMF26 SMF27 with swashplate construction are of swash plate construction with preset displacement. and are intendent for closed circuit procedure. The output velocity is propor tional to the movement fee of the enter fluid. The output torque is proportional to the differential between large and reduced stress sides of the fluid circuit. The direction of motor (output) shaft rotation depends upon which port the fluid enters the motor.
technical performance info under:

CZPT Danfoss SMF CZPT Piston Cement Mixer Motor SMF21, SMF22, SMF23, SMF24
And Eaton HHD Concrete Mixer Weighty Obligation Motor.
Information concerning the selection of hydraulic fluid     
The right option of hydraulic fluid demands expertise of the operating temperature in relation to the ambient temperature: in a closed circuit the circuit temperature. The hydraulic fluid should be chosen so that the functioning viscosity in the operating temperature range is inside the the best possible assortment – the shaded spot of the selection diagram.  the higher viscosity course be picked in every single case. i, e: At an ambient temperature of X °C an operating temperature of sixty °C is set. In the ideal working viscosity range (shaded spot) this corresponds to the viscosity lessons VG46 or VG68 to be selected: VG65. and note: The situation drain temperature, which is afflicted by pressure and velocity, is always higher than the circuit temperature. At no stage in the technique could the temperature be greater than 100 °C. If the earlier mentioned conditions cannot be maintained thanks to intense functioning parameters, please check with us.