2. PISTON PUMPS Copyright  Eaton Hydraulics 2000 Steve Skinner, Eaton Hydraulics, Havant, UK

3. Introduction Products PISTON PUMPS

4. CYLINDER BLOCK AND PISTON

6. PISTON SHOE

7. ROTATING GROUP

8. PISTON PUMP PRINCIPLE

9. FIXED DISPLACEMENT AXIAL PISTON PUMP 1 2

10. FIXED DISPLACEMENT PISTON PUMP Q Q Q = (No. of Pistons) x (Piston Size) x (Piston Stroke) x (Drive Speed)

11. Q Q STROKE VARIABLE DISPLACEMENT PUMP - MAX FLOW

12. Q = (No. of Pistons) x (Piston Size) x (Piston Stroke) x (Drive Speed) STROKE Q Q VARIABLE DISPLACEMENT PUMP - REDUCED FLOW

13. Q = (No. of Pistons) x (Piston Size) x (Piston Stroke) x (Drive Speed) STROKE Q Q VARIABLE DISPLACEMENT PUMP - REDUCED FLOW

14. Q = (No. of Pistons) x (Piston Size) x (Piston Stroke) x (Drive Speed) Q Q STROKE VARIABLE DISPLACEMENT PUMP - ZERO FLOW

15. Q = (No. of Pistons) x (Piston Size) x (Piston Stroke) x (Drive Speed) STROKE VARIABLE DISPLACEMENT PUMP - ZERO FLOW

16. Q Q VARIABLE DISPLACEMENT PUMP - REVERSED FLOW

17. SINGLE OPERATING PISTON

18. DOUBLE ACTING OPERATING PISTON

19. DUAL OPERATING PISTON

20. PERPENDICULAR OPERATING PISTON

21. PINTLE SADDLE SWASH PLATE BEARING

22. PISTON SHOE LUBRICATION

24. TYPICAL CONSTRUCTION

26. OPEN LOOP TRANSMISSION

30. OVER CENTRE OPEN LOOP TRANSMISSION

31. CLOSED LOOP TRANSMISSION

37. TYPICAL CLOSED LOOP CIRCUITRY

38. DIRECT DISPLACEMENT CONTROL: u Manual u Electric Motor u Pilot pressure u Electronic DIRECT DISPLACEMENT CONTROL: u Manual u Electric Motor u Pilot pressure u Electronic DISPLACEMENT CONTROL OPTIONS CONTROL PRESSURE / DISPLACEMENT CONTROL: u Pressure Compensation u Load Sensing u Constant Power PRESSURE / DISPLACEMENT CONTROL: u Pressure Compensation u Load Sensing u Constant Power

39. Q MANUAL DISPLACEMENT CONTROL

40. ELECTRIC DISPLACEMENT CONTROL M Q ~8 sec~40 sec M

41. ELECTRONIC DISPLACEMENT CONTROL U Q U t MIN ~ 300 mS - 1000 mS

42. PILOT PRESSURE DISPLACEMENT CONTROL P Q P P (bar) 1040

43. PRESSURE COMPENSATION Q P

44. LOAD SENSING P2P2 P1P1 Q P P1P1 P2P2

45. POWER LIMITING Q P P.Q

46. uDisplacements to 750+ cm 3 /r uPressure capabilities to 350/400 bar uHigh noise level uSensitive to poor inlet conditions & contamination uHigh overall efficiency uGood life expectancy uLarge, bulky units uGood fluid compatibility uHigh cost. uDisplacements to 750+ cm 3 /r uPressure capabilities to 350/400 bar uHigh noise level uSensitive to poor inlet conditions & contamination uHigh overall efficiency uGood life expectancy uLarge, bulky units uGood fluid compatibility uHigh cost. AXIAL PISTON PUMP CHARACTERISTICS

47. Introduction Products PISTON PUMPS

48. 210 bar 140 bar 11 14 21 33 43 62 95 198 cm 3 / rev uClassic product uSingle control piston uNo separate valve plate uPintle bearing yoke uFixed displacements up to 95 cm 3 /rev. uClassic product uSingle control piston uNo separate valve plate uPintle bearing yoke uFixed displacements up to 95 cm 3 /rev. PVB SERIES

49. PVE SERIES uMainly mobile applications uSingle control piston uPintle bearing yoke uThrough drive option uIntegral vane pump option. uMainly mobile applications uSingle control piston uPintle bearing yoke uThrough drive option uIntegral vane pump option. 25 210 bar 185 bar cm 3 / rev 41 45 CONTROLS sPressure compensator sLoad sensing sRemote compensator sElectric dual setting compensator sAccumulator unloading compensator CONTROLS sPressure compensator sLoad sensing sRemote compensator sElectric dual setting compensator sAccumulator unloading compensator

50. PVQ SERIES 210 bar 140 bar 11 cm 3 / rev 14 21 25 33 41 45 uIndustrial pump range comprising quietened versions of PVB & PVE uSingle control piston uPintle bearing yoke. uIndustrial pump range comprising quietened versions of PVB & PVE uSingle control piston uPintle bearing yoke. CONTROLS sPressure compensator sLoad sensing sRemote compensator sElectric dual setting compensator sAccumulator unloading compensator CONTROLS sPressure compensator sLoad sensing sRemote compensator sElectric dual setting compensator sAccumulator unloading compensator 185 bar

51. TA 19 SERIES TRANSMISSION PUMPS P MAX 210 350 bar psi 3000 5000 41 cm 3 /rev 41 + 41 cm 3 /rev uMedium duty hydrostatic transmission for mobile applications uSingle and double units with integral charge and auxiliary pumps uBased on PVE open loop pump uAluminium body uTypical applications include fork lift trucks and skid- steer loaders. uMedium duty hydrostatic transmission for mobile applications uSingle and double units with integral charge and auxiliary pumps uBased on PVE open loop pump uAluminium body uTypical applications include fork lift trucks and skid- steer loaders.

52. PVH SERIES 250 bar 57 cm 3 / rev 74 98 131 uIndustrial and mobile pump range uWide range of control options (including torque limiting) uControl piston plus bias piston u200% through drive capability uSaddle bearing yoke. uIndustrial and mobile pump range uWide range of control options (including torque limiting) uControl piston plus bias piston u200% through drive capability uSaddle bearing yoke.

53. PVM SERIES P MAX 230 230 bar Range 250 280 3300 3600 4000 bar psi P MAX 280 320 350 4000 4600 5000 bar psi uLow noise Industrial and Mobile pump series uSingle control piston uSaddle bearing yoke u200% through drive capability. uLow noise Industrial and Mobile pump series uSingle control piston uSaddle bearing yoke u200% through drive capability. 280 bar Range

54. PVM SERIES 20 32 50 63 81 106 141 cm 3 /r 18 28 45 57 74 98 131 cm 3 /r - 230 bar - 280 bar

55. PVX SERIES HYDROKRAFT PUMPS P MAX 420 bar 350 bar uHigh pressure open loop pumps for industrial applications uWide range of control options uSaddle bearing yoke with single axial control piston. uHigh pressure open loop pumps for industrial applications uWide range of control options uSaddle bearing yoke with single axial control piston.

56. PVW SERIES HYDROKRAFT PUMPS uHigh pressure open loop pumps for industrial applications uWide range of control options uSaddle bearing yoke with perpendicular control piston uSuitable for larger displacements and multiple units. uHigh pressure open loop pumps for industrial applications uWide range of control options uSaddle bearing yoke with perpendicular control piston uSuitable for larger displacements and multiple units. P MAX 420 bar 350 bar

57. cm 3 /rev 250 360 500 750 66 90 130 180 PVX PVW PVX & PVW SERIES OPEN LOOP PUMPS

58. TVW SERIES HYDROKRAFT TRANSMISSION PUMPS uHigh pressure closed loop pumps for industrial applications uWide range of control options uSaddle bearing yoke with perpendicular control piston uIntegral pilot and charge pump options. uHigh pressure closed loop pumps for industrial applications uWide range of control options uSaddle bearing yoke with perpendicular control piston uIntegral pilot and charge pump options. P MAX 420 bar 350 bar

59. cm 3 /rev 130 180 250 360 500 750 TVW TVW SERIES CLOSED LOOP PUMPS

60. INTEGRATED MOTOR PUMP u An oil-cooled electric motor and pump assembly mounted within a noise reducing shroud

61. INTEGRATED MOTOR PUMP u An oil-cooled electric motor and pump assembly mounted within a noise reducing shroud

62. INTEGRATED MOTOR PUMP u An oil-cooled electric motor and pump assembly mounted within a noise reducing shroud

63. uSignificant noise and space reductions uSuitable for standard single or multiple vane or piston pumps uAccess port for pump control adjustments uAvailable in five power sizes from 15 to 92 kW. uSignificant noise and space reductions uSuitable for standard single or multiple vane or piston pumps uAccess port for pump control adjustments uAvailable in five power sizes from 15 to 92 kW. kW - 15 22 45 75 92 HP - 20 30 60 100 125 INTEGRATED MOTOR PUMP

64. PVX / PVW PVM PVH PVQ PVE DISPLACEMENT PRESSURE CAPABILITY PRESSURE CAPABILITY PISTON PUMP RANGE

65. PISTON PUMPS Copyright  Eaton Hydraulics 2000 Steve Skinner, Eaton Hydraulics, Havant, UK