Series 90 Axial Piston Pumps Technical Information Manual

1 MAKING MODERN LIVING POSSIBLET echnical InformationSeries 90 Axial Piston historyTable of revisionsDateChangedRevMarch 2016 Minor edit0804 January 2015correction to O-ring sizing - page 77 HCMay 2014corrections to pin assignments - page 48 HBFebruary 2014 Danfoss LayoutHATechnical InformationSeries 90 Axial Piston Pumps2520L0603 Rev 0804 March 2016 General DescriptionSeries 90 Family of Pumps and +1 Compliant Controls and Circuit 6 System SpecificationsGeneral 8 Features and 9 Operating 10 Input 10 Independant Braking 10 System 11 Charge 11 External Shaft Seal 12 Temperature and 12 System Design ParametersFiltration 13 Suction filtration Option 13 Charge pressure filtration (partial charge pump flow).

2 14 Remote charge pressure 14 Fluid 15 Pump 16 Charge 16 Charge pump 16 Bearing Loads and 16 Applications with external shaft and Minimizing System 18 Mounting Flange 18 Master Model CodeSeries 90 Master Model 21 Control Options3-Position (FNR) Electric Control - DC, 26 Response 27 Electric Displacement Control (EDC), Options KA, KP, and 31 Pump output flow direction vs. control Over Ride (MOR).. 31 Hydraulic Displacement Control (HDC), Option and 33 Pump output flow direction vs. control 34 Manual Displacement Control (MDC), Options MA, 34 Features and control handle 35 Technical InformationSeries 90 Axial Piston PumpsContents520L0603 Rev 0804 March 20163 Response output flow direction vs.

3 Control handle 36 MDC with Neutral Start Switch (NSS)..37 Non Feedback Proportional Electric Control (NFPE) .. 37 Control control used with a Danfoss signal 39 Features and OptionsMulti-Function 40 Pressure limiting 40 Bypass 41 Auxiliary Mounting 41 Mating pump 41 Displacement 42 Shaft torque and spline 43 Shaft torque for tapered Availability and Torque Shaft Customer 45 Charge 46 Charge pump 46 Charge pump flow and power 47 Connector Pin DrawingsFrame Size 50 Frame Size 53 Frame Size 57 Frame Size 075 NFPE Options FK, FL, FM.

4 60 Frame Size 65 Frame Size 70 Frame Size 74 Frame Size 78 Cover (F-N-R) Electric 82 Electric Displacement Control (EDC) with MS-Connector or Packard 83 Hydraulic Displacement Control (HDC).. 84 Manual Displacement Control (MDC) with neutral start 84 Electrohydraulic Displacement Control (NFPE)(except 075 NFPE).. 85 Integral Pressure 86 Remote pressure without InformationSeries 90 Axial Piston PumpsContents4520L0603 Rev 0804 March 2016 Series 90 Family of Pumps and MotorsSeries 90 hydrostatic Pumps and motors can be applied together or combined with other products in asystem to transfer and control hydraulic power.

5 They are intended for closed circuit applications. Series 90 advanced technology Seven sizes of variable displacement Pumps Proven reliability and performance Compact, lightweight Worldwide sales and service PLUS+1 compliant controls and sensorsSeries 90 variable displacement Pumps are compact, high power density units. All models utilize theparallel Axial Piston /slipper concept in conjunction with a tiltable swashplate to vary the pump sdisplacement. Reversing the angle of the swashplate reverses the flow of oil from the pump and thusreverses the direction of rotation of the motor 90 Pumps include an integral charge pump to provide system replenishing and cooling oil flow, aswell as control fluid flow.

6 They also feature a range of auxiliary mounting pads to accept auxiliaryhydraulic Pumps for use in complementary hydraulic systems. A complete family of control options isavailable to suit a variety of control systems (mechanical, hydraulic, electric). Series 90 motors also use the parallel Axial Piston /slipper design in conjunction with a fixed or tiltableswashplate. They can intake/discharge fluid through either port; they are bidirectional. They also includean optional loop flushing feature that provides additional cooling and cleaning of fluid in the workingloop.

7 For more Information on Series 90 motors, refer to Series 90 Motors Technical Information +1 Compliant Controls and SensorsA wide range of Series 90 controls and sensors are PLUS+1 compliant. PLUS+1 compliance means ourcontrols and sensors are directly compatible with the PLUS+1 machine control architecture. AddingSeries 90 Pumps to your application using PLUS+1 GUIDE software is as easy as drag-and-drop. Softwaredevelopment that used to take months can now be done in just a few hours. For more Information onPLUS+1 GUIDE, visit 90 Pumps can be used together in combination with other Danfoss Pumps and motors in theoverall hydraulic system.

8 Danfoss hydrostatic products are designed with many different displacement,pressure and load-life to the Danfoss website or applicable product catalog to choose the components that are right foryour complete closed circuit hydraulic InformationSeries 90 Axial Piston PumpsGeneral Description520L0603 Rev 0804 March 20165 DesignSeries 90 pump cross-sectionP106 648 ESlider blockServo pistonServo armDisplacement controlCradle bearingCharge pumpSwashplateCradle guideFeedback linkageRoller bearingShaftPistonSlipperValve plateCylinder blockInput shaftRear bushingBushingsealTypical name in USAP lace of

9 ManufactureModelNumberSerialNumberModelC odeA - 88 - 126 - 67890501829P108494E90L055 KA 1 N 6 S 3 C6 C 03 NNN 35 35 24 Series 90 Pumps are also manufactured in Europe and China. Place of manufacture shown on nameplatewill correspond with the actual place of Circuit DiagramThis configuration shows a hydrostatic transmission using a Series 90 Axial Piston variable displacementpump and a Series 90 fixed displacement InformationSeries 90 Axial Piston PumpsGeneral Description6520L0603 Rev 0804 March 2016 PumpMotorWorking loop (low pressure)Control fluidSuction lineCase drain fluidWorking loop (high pressure)

10 Motor swashplateLoop flushing valveDisplacement control valveHeat exchanger bypass valveReservoirVacuum gaugePurge relief valveFixed displacement motorOutput shaftMulti-function valveCharge pumpTo pump caseServo pressurerelief valvesServo control cylinderPump swashplateInput shaftReversible variabledisplacement pumpServo control cylinderHeat exchangerMulti-function valve Charge pressure relief valveOrificed checkvalveControl handleP102 000 System schematicMBBL2M2M1M4M5M3 AASL2M1M2L1M3P104 286 ETechnical InformationSeries 90 Axial Piston PumpsGeneral Description520L0603 Rev 0804 March 20167 General SpecificationsDesignAxial Piston pump of cradle swashplate design with variable displacementDirection of rotationClockwise, counterclockwisePipe connectionsMain pressure ports: ISO split flange bossRemaining ports.