High Quality Disreplacment 90r055 Hydraulic Axial Piston Pump

Sauer 90R Hydraulic Piston Pump   Product DescriptionSeries 90 axial piston variable displacement pumps are of cradle swash plate design with variable displacement, and are intended for closed circuit applications. The flow rate is proportional to the pump input speed and displacement. The latter is infinitely adjustable between zero and maximum displacement. Flow direction is reversed by tilting the swash plate to the opposite side of the neutral (zero displacement) position. Sauer 90 Series Hydraulic Piston Pump Feature1.The Series 90 - Advanced Technology Today ;2. 8 Sizes of Variable Displacement Pumps ;3. Complete Family of Control SystemsProven Reliability and Performance ;4. Product Configurations ;5. Compact and Lightweight. Product ParametersTable of values (theoretical values, without efficiency and tolerances; values rounded)Sauer 90Dimension90R03090L03090R04290L04290R05590L05590R07590L07590R10090L10090R13090L13090R18090L18090R25090L250Displacementcm330425575100130180250in31.832.563.354.576.17.9310.9815.25Input speedMinimummin-1 (rpm)500500500500500500500500Ratedmin-1 (rpm)4 2004 2003 9003 6003 3003 1002 6002 300Maximummin-1 (rpm)4 6004 6004  2503 9503 6503  4002  8502 500Max. Attainablemin-1 (rpm)5 0005 0004 7004 3004 0003 7003 1502 750TheoreticalNm/bar0.480.670.881.191.592.072.873.97Torquein lb/1000 psi2904105307309701 2601 7502 433Mass moment of inertia of the int. rotating partskg m20.00230.00390.0060.00960.0150.0230.0380.065lb • ft20.05460.09260.14240.2280.3560.5460.9021.543Weight (with MA Control)kg283440496888136154lb627588108150195300340   Detailed PhotosControls - Circuit Diagram, Nomenclature and Description, 3-Position (FNR) Electric Control, Options DC, DDThe 3-Position (FNR) control uses an electric input signal to switch the pump to a full stroke position.A range of orifice sizes is available for the Series 90 Electric Displacement Control to assist in matching the rate of swash plate response to the acceleration and deceleration requirements of the application. Testing should be carried out to determine the proper orifice selection for the desired response.Electric Displacement Control (EDC), Options KA, KPThe electric displacement control uses an electro-hydraulic Pressure Control Pilot valve to control the pilot pressure. The Pressure Control Pilot valve converts an electrical input signal to a hydraulic input signal to operate a 4-way servo valve, which ports hydraulic pressure to either side of a double acting servo piston. The servo piston tilts the cradle swash plate, thus varying the pump's displacement from full displacement in one direction to full displacement in the opposite direction. The control has a mechanical feedback mechanism which moves the servo valve in relation to the input signal and the angular position of the swash plate. The electrical displacement control is designed so the angular rotation of the swash plate (pump displacement) is proportional to the electrical input signal. Due to normal operating force changes, the swash plate tends to drift from the position preset by the machine operator. Drift, sensed by feedback linkage system connecting the swash plate to the control valve, will activate the valve and supply pressure to the servo piston, maintaining the swash plate in its preset position.Hydraulic Displacement Control (HDC), Option HFThe hydraulic displacement control uses a hydraulic input signal to operate a 4-way servo valve, which ports hydraulic pressure to either side of a double acting servo piston. The servo piston tilts the cradle swash plate, thus varying the pump's displacement from full displacement in one direction to full displacement in the opposite direction. The control has a mechanical feedback mechanism which moves the servo valve in relation to the input signal and the angular rotation of the swash plate. The hydraulic displacement control is designed so the angular position of the swash plate (pump displacement) is proportional to the hydraulic input signal pressure. Due to normal operating force changes, the swash plate tends to drift from the position preset by the machine operator. Drift, sensed by feedback linkage system connecting the swash plate to the control valve, will activate the valve and supply pressure to the servo piston, maintaining the swash plate in its preset position.Manual Displacement Control (MDC), Options MA, MBThe manual displacement control device converts a mechanical input signal to a hydraulic signal that tilts the cradle swash plate through an angular rotation varying the pump's displacement from full displacement in one direction to full displacement in the opposite direction. The manual displacement control has a mechanical feedback mechanism which moves a servo valve in the proper relationship to the input signal and the angular position of the swash plate. The manual displacement control is designed so that the angular rotation of the swash plate is proportional to the mechanical input signal.