Sauer-Sundstrand PV20 PV21 PV22 PV23 Hydraulic Axial Piston Pump for Excavator

Sauer-Sundstrand axial piston pump PV20, PV21, PV22, PV23, PV24, PV25, PV26, PV27Product DescriptionHydraulic Sauer-Sundstrand axial piston pump PV20, PV21, PV22, PV23, PV24, PV25, PV26, PV27Description Closed circuitSeries 20Size: 20, 21, 22, 23, 24, 25, 26, 27Nominal pressure 210 bars, Maximum pressure 350 bars. The Sauer PV axial piston variable displacement pumps, Series 20, are of swash plate construction with variable flow capability suitable for hydrostatic transmissions with closed circuit. The flow rate is proportional to the pumps driven speed displacement, which, in turn, is determined by the swash plate angle. The latter is infinitely adjustable between zero and maximum displacement. Flow direction is reserved by titling the swash plate to the opposite side of the neutral or zero displacement position. These units and parts are fit, form and function replacements for Sauer-Sundstrand series 20 components. - Suitable for a variety of applications- Multiple displacements and options available- 8 different frame sizes- Engineered to provide a long service life and reliability- Fixed displacement motor can be operated in either direction of rotation- Multiple drive shaft options and control options- Heavy duty bearings and shafts- Easily serviceable- Replacement parts also available- Direct replacements for Sauer-Sundstrand Product ParametersTechnical Data Table of values (theoretical values, without efficiency and tolerances; values rounded)SizeDimensionSauer-Sundstrand PV pumpPV20PV21PV22PV23PV24PV25PV26PV27Max. displacementcm333,351,669,889,0118,7165,8227,3333,7Max. flowdm3min-1119,5159,9196,1230,5278,9348,1429,59557,24641488Charge pumpcm312,312,318,0318,0318,832,832,865,5Max. pressureMPa35Nominal pressureMPa21Max. pressure of controlMPa3,5Charge pressureMPa0,8 - 2,0Max. pressure in caseMPa0,25 continuous 0,5 intermittentMaximum speed +min-135903100281025902350210018901670Minimum speedmin-1500Nominal speedmin-11500Kinematic viscosity range of working fluid- starting- operating- optimum   100012 - 60025 - 35mm2s-1Kind of working fluid mineral oilOperating temperatureoC- 40 to + 50Max. temperature of working fluid in tankoC80Purity of working fluidµm10Direction of shaft rotation clockwise or counter clockwiseMaximum swash plate angleo± 18 oWeightkg45556378124164212270Detailed Photos Related ProductFor the drum drive in mobile concrete mixers A4VTG071, A4VGT090 series.-Variable axial piston pump of swash plate design for hydrostatic drives in closed circuit-The flow is proportional to the drive speed and displacement.-The flow increases as the angle of the swash plate is adjusted from zero to its maximum value.-Flow direction changes smoothly when the swash plate is moved through the neutral position.-Two pressure-relief valves are provided on the high pressure ports to protect the hydrostatic transmission (pump and motor) from overload.-The high-pressure relief valves also function as boost valves.-The integrated boost pump acts as a feed pump and control pressure supply.-The maximum boost pressure is limited by a built-in boost pressure-relief valve.   The A2F axial piston unit of bent axis design with fixed displacement, for use as either pump or motor in hydrostatic drives, in open or closed circuit.If operated as a pump, the flow is proportional to the drive speed and displacement. If operated as a motor, the output speed is proportional to the swept volume and inversely proportional to displacement. The output torque increases with the pressure drop between the high and low pressure sides.- High performance rotary group with well-proven spherical control area with the advantages, self-centering low peripheral speed, high efficiency.- For use in mobile and stationary applications areas- Output flow is proportional to drive speed and displacement- The drive shaft bearings are designed to give the service life expected in these areas of operationHydraulic pump & motor A2F6, A2F10, A2F12, A2F23, A2F28, A2F45, A2F55, A2F63, A2F80, A2F107, A2F125, A2F160, A2F200, A2F250, A2F250, A2F355, A2F500  Variable A6VM motor with axial tapered piston rotary group of bent axial design, for hydrostatic drives in open and closed circuits- For use in mobile and stationary applications- The wide control range enables the variable motor to satisfy the requirement for high speed and high torque.- The displacement can be infinitely changed from Vg max to Vg min = 0.- The output speed is dependent on the flow of the pump and the displacement of the motor.- The output torque increases with the pressure differential between the high-pressure and low-pressure side and with increasing displacement.- Wide control range with hydrostatic transmissions- Wide selection of control devices- Cost savings through elimination of gear shifts and possibility of using smaller pumps.Hydraulic Variable motor A6VM55, A6VM80, A6VM107, A6VM140, A6VM160, A6VM200, A6VM250  Eaton has the lead position in providing reliable and durable system s