piston pumps
DESCRIPTION
TRANSCRIPT
PISTON PUMPSPISTON PUMPS
Copyright Eaton Hydraulics 2000Copyright Eaton Hydraulics 2000
Steve Skinner, Eaton Hydraulics, Havant, UKSteve Skinner, Eaton Hydraulics, Havant, UK
IntroductionIntroduction
ProductsProducts
PISTON PUMPSPISTON PUMPS
CYLINDER BLOCK AND PISTONCYLINDER BLOCK AND PISTON
CYLINDER BLOCK AND PISTONCYLINDER BLOCK AND PISTON
PISTON SHOEPISTON SHOE
ROTATING GROUPROTATING GROUP
PISTON PUMP PRINCIPLEPISTON PUMP PRINCIPLE
FIXED DISPLACEMENT AXIAL PISTON PUMPFIXED DISPLACEMENT AXIAL PISTON PUMP
1
2
FIXED DISPLACEMENT PISTON PUMPFIXED DISPLACEMENT PISTON PUMP
Q = (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)
Q = (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)
STROKESTROKE
VARIABLE DISPLACEMENT PUMP - MAX FLOWVARIABLE DISPLACEMENT PUMP - MAX FLOW
Q = (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)
STROKESTROKE
VARIABLE DISPLACEMENT PUMP - REDUCED FLOWVARIABLE DISPLACEMENT PUMP - REDUCED FLOW
Q = (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)
STROKESTROKE
VARIABLE DISPLACEMENT PUMP - REDUCED FLOWVARIABLE DISPLACEMENT PUMP - REDUCED FLOW
Q = (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)
STROKESTROKE
VARIABLE DISPLACEMENT PUMP - ZERO FLOWVARIABLE DISPLACEMENT PUMP - ZERO FLOW
Q = (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)
STROKESTROKE
VARIABLE DISPLACEMENT PUMP - ZERO FLOWVARIABLE DISPLACEMENT PUMP - ZERO FLOW
VARIABLE DISPLACEMENT PUMP - REVERSED FLOWVARIABLE DISPLACEMENT PUMP - REVERSED FLOW
SINGLE OPERATING PISTONSINGLE OPERATING PISTON
DOUBLE ACTING OPERATING PISTONDOUBLE ACTING OPERATING PISTON
DUAL OPERATING PISTONDUAL OPERATING PISTON
PERPENDICULAR OPERATING PISTONPERPENDICULAR OPERATING PISTON
PINTLEPINTLE
SADDLESADDLE
SWASH PLATE BEARINGSWASH PLATE BEARING
PISTON SHOE LUBRICATIONPISTON SHOE LUBRICATION
PISTON SHOE LUBRICATIONPISTON SHOE LUBRICATION
TYPICAL CONSTRUCTIONTYPICAL CONSTRUCTION
TYPICAL CONSTRUCTIONTYPICAL CONSTRUCTION
OPEN LOOP TRANSMISSIONOPEN LOOP TRANSMISSION
OPEN LOOP TRANSMISSIONOPEN LOOP TRANSMISSION
OPEN LOOP TRANSMISSIONOPEN LOOP TRANSMISSION
OPEN LOOP TRANSMISSIONOPEN LOOP TRANSMISSION
OVER CENTRE OPEN LOOP TRANSMISSIONOVER CENTRE OPEN LOOP TRANSMISSION
CLOSED LOOP TRANSMISSIONCLOSED LOOP TRANSMISSION
CLOSED LOOP TRANSMISSIONCLOSED LOOP TRANSMISSION
CLOSED LOOP TRANSMISSIONCLOSED LOOP TRANSMISSION
CLOSED LOOP TRANSMISSIONCLOSED LOOP TRANSMISSION
CLOSED LOOP TRANSMISSIONCLOSED LOOP TRANSMISSION
CLOSED LOOP TRANSMISSIONCLOSED LOOP TRANSMISSION
TYPICAL CLOSED LOOP CIRCUITRYTYPICAL CLOSED LOOP CIRCUITRY
DIRECT DISPLACEMENT CONTROL:
Manual Electric Motor Pilot pressure Electronic
DIRECT DISPLACEMENT CONTROL:
Manual Electric Motor Pilot pressure Electronic
DISPLACEMENT CONTROL OPTIONSDISPLACEMENT CONTROL OPTIONS
CONTROL PRESSURE / DISPLACEMENT CONTROL:
Pressure Compensation Load Sensing Constant Power
PRESSURE / DISPLACEMENT CONTROL:
Pressure Compensation Load Sensing Constant Power
Q
MANUAL DISPLACEMENT CONTROLMANUAL DISPLACEMENT CONTROL
ELECTRIC DISPLACEMENT CONTROLELECTRIC DISPLACEMENT CONTROL
M
Q
~8 sec ~40 secM
ELECTRONIC DISPLACEMENT CONTROLELECTRONIC DISPLACEMENT CONTROL
UU
Q
U
tMIN ~ 300 mS - 1000 mS
PILOT PRESSURE DISPLACEMENT CONTROLPILOT PRESSURE DISPLACEMENT CONTROL
PP
Q
PP (bar)10 40
PRESSURE COMPENSATIONPRESSURE COMPENSATION
Q
P
LOAD SENSINGLOAD SENSING
P2
P1
Q
PP1P2
POWER LIMITINGPOWER LIMITING
Q
P
P.Q
Displacements to 750+ cm3/r
Pressure capabilities to 350/400 bar
High noise level
Sensitive to poor inlet conditions & contamination
High overall efficiency
Good life expectancy
Large, bulky units
Good fluid compatibility
High cost.
Displacements to 750+ cm3/r
Pressure capabilities to 350/400 bar
High noise level
Sensitive to poor inlet conditions & contamination
High overall efficiency
Good life expectancy
Large, bulky units
Good fluid compatibility
High cost.
AXIAL PISTON PUMP CHARACTERISTICSAXIAL PISTON PUMP CHARACTERISTICS
IntroductionIntroduction
ProductsProducts
PISTON PUMPSPISTON PUMPS
210 bar210 bar
140 bar140 bar
1111 1414 2121 3333 4343 6262 9595 198198
cm3 / revcm3 / rev
Classic product
Single control piston
No separate valve plate
Pintle bearing yoke
Fixed displacements up to 95 cm3/rev.
Classic product
Single control piston
No separate valve plate
Pintle bearing yoke
Fixed displacements up to 95 cm3/rev.
PVB SERIESPVB SERIES
PVE SERIESPVE SERIES
Mainly mobile applications
Single control piston
Pintle bearing yoke
Through drive option
Integral vane pump option.
Mainly mobile applications
Single control piston
Pintle bearing yoke
Through drive option
Integral vane pump option.
2525
210 bar210 bar
185 bar185 bar
cm3 / revcm3 / rev4141 4545
CONTROLS
Pressure compensator
Load sensing
Remote compensator
Electric dual setting compensator
Accumulator unloading compensator
CONTROLS
Pressure compensator
Load sensing
Remote compensator
Electric dual setting compensator
Accumulator unloading compensator
PVQ SERIESPVQ SERIES
210 bar210 bar
140 bar140 bar
1111
cm3 / revcm3 / rev1414 2121 2525 3333 4141 4545
Industrial pump range comprising
quietened versions of PVB & PVE
Single control piston
Pintle bearing yoke.
Industrial pump range comprising
quietened versions of PVB & PVE
Single control piston
Pintle bearing yoke.
CONTROLS
Pressure compensator
Load sensing
Remote compensator
Electric dual setting compensator
Accumulator unloading compensator
CONTROLS
Pressure compensator
Load sensing
Remote compensator
Electric dual setting compensator
Accumulator unloading compensator
185 bar185 bar
TA 19 SERIES TRANSMISSION PUMPSTA 19 SERIES TRANSMISSION PUMPS
PMAX PMAX
210210
350350
barbar psipsi
30003000
50005000
41 cm3/rev41 cm3/rev
41 + 41 cm3/rev41 + 41 cm3/rev
Medium 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.
Medium 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 SERIESPVH SERIES
250 bar250 bar5757
cm3 / revcm3 / rev7474 9898 131131
Industrial and mobile pump range
Wide range of control options (including torque limiting)
Control piston plus bias piston
200% through drive capability
Saddle bearing yoke.
Industrial 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 SERIESPVM SERIES
PMAX PMAX
230230
230 barRange
250250
280280
3300330036003600
40004000
barbar psipsi
PMAX PMAX
280280320320
350350
4000400046004600
50005000
barbar psipsi Low noise Industrial and Mobile
pump series
Single control piston
Saddle bearing yoke
200% through drive capability.
Low noise Industrial and Mobile pump series
Single control piston
Saddle bearing yoke
200% through drive capability.
280 barRange
PVM SERIESPVM SERIES
20203232
50506363
8181
106106
141 cm3/r141 cm3/r
18 28 45 57 74 98 131 cm3/r 18 28 45 57 74 98 131 cm3/r
- 230 bar - 230 bar
- 280 bar - 280 bar
PVX SERIES HYDROKRAFT PUMPSPVX SERIES HYDROKRAFT PUMPS
PMAX PMAX 420 bar420 bar
350 bar350 bar
High pressure open loop pumps for industrial applications
Wide range of control options
Saddle bearing yoke with single axial control piston.
High pressure open loop pumps for industrial applications
Wide range of control options
Saddle bearing yoke with single axial control piston.
PVW SERIES HYDROKRAFT PUMPSPVW SERIES HYDROKRAFT PUMPS
High 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.
High 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 PMAX 420 bar420 bar
350 bar350 bar
cm3/revcm3/rev
250250 360360 500500 7507506666 9090 130130 180180
PVX PVX
PVW PVW
PVX & PVW SERIES OPEN LOOP PUMPSPVX & PVW SERIES OPEN LOOP PUMPS
TVW SERIES HYDROKRAFT TRANSMISSION PUMPSTVW SERIES HYDROKRAFT TRANSMISSION PUMPS
High 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.
High 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 PMAX 420 bar420 bar
350 bar350 bar
cm3/revcm3/rev
130130 180180 250250 360360 500500 750750
TVW TVW
TVW SERIES CLOSED LOOP PUMPSTVW SERIES CLOSED LOOP PUMPS
INTEGRATED MOTOR PUMPINTEGRATED MOTOR PUMP
An oil-cooled electric motor and pump assembly mounted within a noise reducing shroud
INTEGRATED MOTOR PUMPINTEGRATED MOTOR PUMP
An oil-cooled electric motor and pump assembly mounted within a noise reducing shroud
INTEGRATED MOTOR PUMPINTEGRATED 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.
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.
kW - 15 22 45 75 92kW - 15 22 45 75 92HP - 20 30 60 100 125HP - 20 30 60 100 125
INTEGRATED MOTOR PUMPINTEGRATED MOTOR PUMP
PVX / PVWPVX / PVW
PVM
PVH
PVQ
PVE
DISPLACEMENT DISPLACEMENT
PRESSURECAPABILITYPRESSURECAPABILITY
PISTON PUMP RANGEPISTON PUMP RANGE
PISTON PUMPSPISTON PUMPS
Copyright Eaton Hydraulics 2000Copyright Eaton Hydraulics 2000
Steve Skinner, Eaton Hydraulics, Havant, UKSteve Skinner, Eaton Hydraulics, Havant, UK