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PISTON PUMPSCopyright Eaton Hydraulics 2000Steve Skinner, Eaton Hydraulics, Havant, UK
IntroductionProductsPISTON PUMPS
CYLINDER BLOCK AND PISTON
CYLINDER BLOCK AND PISTON
PISTON SHOE
ROTATING GROUP
PISTON PUMP PRINCIPLE
FIXED DISPLACEMENT AXIAL PISTON PUMP12
FIXED DISPLACEMENT PISTON PUMPQQ = (No. of Pistons) x (Piston Size) x (Piston Stroke) x (Drive Speed)
Q = (No. of Pistons) x (Piston Size) x (Piston Stroke) x (Drive Speed)QVARIABLE DISPLACEMENT PUMP - MAX FLOW
Q = (No. of Pistons) x (Piston Size) x (Piston Stroke) x (Drive Speed)QVARIABLE DISPLACEMENT PUMP - REDUCED FLOW
Q = (No. of Pistons) x (Piston Size) x (Piston Stroke) x (Drive Speed)STROKEQVARIABLE DISPLACEMENT PUMP - REDUCED FLOW
Q = (No. of Pistons) x (Piston Size) x (Piston Stroke) x (Drive Speed)QSTROKEVARIABLE DISPLACEMENT PUMP - ZERO FLOW
Q = (No. of Pistons) x (Piston Size) x (Piston Stroke) x (Drive Speed)STROKEVARIABLE DISPLACEMENT PUMP - ZERO FLOW
QVARIABLE DISPLACEMENT PUMP - REVERSED FLOW
SINGLE OPERATING PISTON
DOUBLE ACTING OPERATING PISTON
DUAL OPERATING PISTON
PERPENDICULAR OPERATING PISTON
PINTLESADDLESWASH PLATE BEARING
PISTON SHOE LUBRICATION
PISTON SHOE LUBRICATION
TYPICAL CONSTRUCTION
TYPICAL CONSTRUCTION
OPEN LOOP TRANSMISSION
OPEN LOOP TRANSMISSION
OPEN LOOP TRANSMISSION
OPEN LOOP TRANSMISSION
OVER CENTRE OPEN LOOP TRANSMISSION
CLOSED LOOP TRANSMISSION
CLOSED LOOP TRANSMISSION
CLOSED LOOP TRANSMISSION
CLOSED LOOP TRANSMISSION
CLOSED LOOP TRANSMISSION
CLOSED LOOP TRANSMISSION
TYPICAL CLOSED LOOP CIRCUITRY
DIRECT DISPLACEMENT CONTROL:
Manual Electric Motor Pilot pressure ElectronicDISPLACEMENT CONTROL OPTIONSCONTROLPRESSURE / DISPLACEMENT CONTROL:
Pressure Compensation Load Sensing Constant Power
MANUAL DISPLACEMENT CONTROL
ELECTRIC DISPLACEMENT CONTROL
ELECTRONIC DISPLACEMENT CONTROL
PILOT PRESSURE DISPLACEMENT CONTROL
PRESSURE COMPENSATION
LOAD SENSING
POWER LIMITING
Displacements to 750+ cm3/rPressure capabilities to 350/400 barHigh noise levelSensitive to poor inlet conditions & contaminationHigh overall efficiencyGood life expectancyLarge, bulky unitsGood fluid compatibilityHigh cost.AXIAL PISTON PUMP CHARACTERISTICS
IntroductionProductsPISTON PUMPS
210 bar
140 bar
11142133436295198cm3 / revClassic productSingle control pistonNo separate valve platePintle bearing yokeFixed displacements up to 95 cm3/rev.PVB SERIES
PVE SERIESMainly mobile applicationsSingle control pistonPintle bearing yokeThrough drive optionIntegral vane pump option.25cm3 / rev4145 CONTROLSPressure compensatorLoad sensingRemote compensatorElectric dual setting compensatorAccumulator unloading compensator
PVQ SERIES11cm3 / rev142125334145Industrial pump range comprising quietened versions of PVB & PVESingle control pistonPintle bearing yoke. CONTROLSPressure compensatorLoad sensingRemote compensatorElectric dual setting compensatorAccumulator unloading compensator185 bar
TA 19 SERIES TRANSMISSION PUMPSMedium duty hydrostatic transmission for mobile applications
Single and double units with integral charge and auxiliary pumps
Based on PVE open loop pump
Aluminium body
Typical applications include fork lift trucks and skid-steer loaders.
PVH SERIES250 bar
57cm3 / rev7498131Industrial and mobile pump range
Wide range of control options (including torque limiting)
Control piston plus bias piston
200% through drive capability
Saddle bearing yoke.
PVM SERIESPMAX 230230 barRange250280330036004000barpsiPMAX 280320350400046005000barpsiLow noise Industrial and Mobile pump seriesSingle control pistonSaddle bearing yoke200% through drive capability.280 barRange
PVM SERIES
PVX SERIES HYDROKRAFT PUMPSPMAX
420 bar
350 bar
High pressure open loop pumps for industrial applications
Wide range of control options
Saddle bearing yoke with single axial control piston.
PVW SERIES HYDROKRAFT PUMPSHigh pressure open loop pumps for industrial applications
Wide range of control options
Saddle bearing yoke with perpendicular control piston
Suitable for larger displacements and multiple units.PMAX
420 bar
350 bar
PVX & PVW SERIES OPEN LOOP PUMPS
TVW SERIES HYDROKRAFT TRANSMISSION PUMPSHigh pressure closed loop pumps for industrial applications
Wide range of control options
Saddle bearing yoke with perpendicular control piston
Integral pilot and charge pump options.PMAX
420 bar
350 bar
TVW SERIES CLOSED LOOP PUMPS
INTEGRATED MOTOR PUMP An oil-cooled electric motor and pump assembly mounted within a noise reducing shroud
INTEGRATED MOTOR PUMP An oil-cooled electric motor and pump assembly mounted within a noise reducing shroud
INTEGRATED MOTOR PUMP An oil-cooled electric motor and pump assembly mounted within a noise reducing shroud
Significant noise and space reductions
Suitable for standard single or multiple vane or piston pumps
Access port for pump control adjustments
Available in five power sizes from 15 to 92 kW.INTEGRATED MOTOR PUMP
DISPLACEMENTPRESSURECAPABILITYPISTON PUMP RANGE
PISTON PUMPSCopyright Eaton Hydraulics 2000Steve Skinner, Eaton Hydraulics, Havant, UK