Hydraulic Pump

how efficient is a hydraulic pump and hydraulic motor?

how efficient is hydraulic motor connceted to a hydraulic pump so the pump runs the motor. what kind of losses are there? is there a different lose at different speeds

If the components are new, the circuit will be relatively efficient. Inefficiency will be a function of leakage in the pump and motor.
The losses will go up with speed and load. The suppliers normally provide a graph that enables you to work out what the delivered power will be at a given load and speed setting.

Just a quick note about the above answer, liquids are compressible but at low pressures the compression is so low it can be virtually ignored. However in applications like fuel systems, operating at around 2000 bar, diesel is compressed to be 85% of its original volume.

ALLIS CHALMERS HYDRAULIC PUMP 70270905 MODEL 6060 6070 6080
ALLIS CHALMERS HYDRAULIC PUMP 70270905 MODEL 6060 6070 6080
$1,138.00
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ALLIS CHALMERS HYDRAULIC PUMP 72074620 MODEL 6040
ALLIS CHALMERS HYDRAULIC PUMP 72074620 MODEL 6040
$1,038.00
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ALLIS CHALMERS HYDRAULIC PUMP 70249469 MODEL 180  185
ALLIS CHALMERS HYDRAULIC PUMP 70249469 MODEL 180 185
$1,280.00
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ALLIS CHALMERS DUAL HYDRAULIC PUMP 70257005 190 GAS 190XT 190 XT111 200 210 220
ALLIS CHALMERS DUAL HYDRAULIC PUMP 70257005 190 GAS 190XT 190 XT111 200 210 220
$1,950.00
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70932C91 Case International Harvester 15GPM Hydraulic Pump 1026 1066 1086 1206 +
70932C91 Case International Harvester 15GPM Hydraulic Pump 1026 1066 1086 1206 +
$340.55
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John Deere Hydraulic Pump Parts Kit AR98993 NSN 4320 00 008 1738 NEW B2614
John Deere Hydraulic Pump Parts Kit AR98993 NSN 4320 00 008 1738 NEW B2614
$13.99
Time Remaining: 2h 30m

6672513 New Bobcat Skid Steer 751 751G 753 753G 763 763G 773 Hydraulic Gear Pump
6672513 New Bobcat Skid Steer 751 751G 753 753G 763 763G 773 Hydraulic Gear Pump
$307.49
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CASE IH McCORMICK HYDRAULIC PUMP 308873A1 93835C91 93835C92 CX90 4230 995 885
CASE IH McCORMICK HYDRAULIC PUMP 308873A1 93835C91 93835C92 CX90 4230 995 885
$375.00
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93835C92 Case IH McCormick Hydraulic Gear Pump 308873A1 406763R91 93835C1 Open
93835C92 Case IH McCormick Hydraulic Gear Pump 308873A1 406763R91 93835C1 Open
$479.00
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AR101807 Hydraulic Pump John Deere 4230 TRACTOR
AR101807 Hydraulic Pump John Deere 4230 TRACTOR
$999.99
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Hydraulic Pump John Deere 5010 Tractor AR101807
Hydraulic Pump John Deere 5010 Tractor AR101807
$999.99
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AR101807 Hydraulic Pump John Deere 3010 TRACTOR
AR101807 Hydraulic Pump John Deere 3010 TRACTOR
$999.99
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Hydraulic Pump John Deere 4430 Tractor AR101807
Hydraulic Pump John Deere 4430 Tractor AR101807
$999.99
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John Deere 4520 Tractor AR101807 Hydraulic Pump
John Deere 4520 Tractor AR101807 Hydraulic Pump
$999.99
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John Deere 4000 Tractor AR101807 Hydraulic Pump
John Deere 4000 Tractor AR101807 Hydraulic Pump
$999.99
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Hydraulic Pump AR101807 John Deere 1640 Tractor
Hydraulic Pump AR101807 John Deere 1640 Tractor
$999.99
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Hydraulic Pump John Deere 7020 Tractor AR101807
Hydraulic Pump John Deere 7020 Tractor AR101807
$999.99
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Hydraulic Pump AR101807 John Deere 4040 Tractor
Hydraulic Pump AR101807 John Deere 4040 Tractor
$999.99
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AR101807 Reman Hydraulic Pump John Deere 2955 Tractor
AR101807 Reman Hydraulic Pump John Deere 2955 Tractor
$999.99
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E4NN911AA Ford NH Tractors 2000300041405000 Hydraulic Pump Housing Gasket
E4NN911AA Ford NH Tractors 2000300041405000 Hydraulic Pump Housing Gasket
$8.75
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Massey Ferguson Renault Hydraulic Pump Double 3616060M1 3382280M1 3382280V1
Massey Ferguson Renault Hydraulic Pump Double 3616060M1 3382280M1 3382280V1
$580.00
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M1870T John Deere 40 320 330 420 430 Hydraulic Pump Gear
M1870T John Deere 40 320 330 420 430 Hydraulic Pump Gear
$65.00
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John Deere Hydraulic Pump AR90453 AR39173 Fits 1530
John Deere Hydraulic Pump AR90453 AR39173 Fits 1530
$400.00
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BELARUS Hydraulic Gear Pump NSH32A3 NSH32A300 100 102 560 562 570 572 800
BELARUS Hydraulic Gear Pump NSH32A3 NSH32A300 100 102 560 562 570 572 800
$298.00
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INTERNATIONAL CUB TRACTOR HYDRAULIC PUMP
INTERNATIONAL CUB TRACTOR HYDRAULIC PUMP
$29.99
Time Remaining: 7h 39m

RE29103 John Deere Hydraulic Pump Seal Kit 3010 2520 4000 4010 4020 4040 4055 ++
RE29103 John Deere Hydraulic Pump Seal Kit 3010 2520 4000 4010 4020 4040 4055 ++
$59.46
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1683301M92 Pump Hydraulic Lift Fits Massey Ferguson 20C 50E TRACTOR 230 699
1683301M92 Pump Hydraulic Lift Fits Massey Ferguson 20C 50E TRACTOR 230 699
$956.60
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JOHN DEERE 2500A HYDRAULIC PUMP PART  AMT2471
JOHN DEERE 2500A HYDRAULIC PUMP PART AMT2471
$125.00
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Case IH Hydraulic Pump Assembly K962635
Case IH Hydraulic Pump Assembly K962635
$513.95
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Ford backhoe TLB HYD pump A D1NN600B Hydraulic pump for 445540545A 550 555
Ford backhoe TLB HYD pump A D1NN600B Hydraulic pump for 445540545A 550 555
$620.00
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Ford Newholland Hydraulic Pump 1 Year Warranty
Ford Newholland Hydraulic Pump 1 Year Warranty
$375.00
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MASSEY FERGUSON TRACTOR HYDRAULIC PUMP DRIVE SHAFT 704997M92
MASSEY FERGUSON TRACTOR HYDRAULIC PUMP DRIVE SHAFT 704997M92
$112.98
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MASSEY FERGUSON 50C 50D 7 8 X 13 spline HYDRAULIC PUMP DRIVE SHAFT 729566M91
MASSEY FERGUSON 50C 50D 7 8 X 13 spline HYDRAULIC PUMP DRIVE SHAFT 729566M91
$159.97
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MASSEY FERGUSON 40B 50A 7 8 X 13 spline HYDRAULIC PUMP DRIVE SHAFT 190495M93
MASSEY FERGUSON 40B 50A 7 8 X 13 spline HYDRAULIC PUMP DRIVE SHAFT 190495M93
$169.97
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John Deere Hydraulic Pump
John Deere Hydraulic Pump
$363.64
Time Remaining: 13h 34m

Ford Hydraulic Pump D8NN600LB 1 Year Warranty
Ford Hydraulic Pump D8NN600LB 1 Year Warranty
$370.00
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Massey Ferguson Hydraulic Pump Drive Shaft
Massey Ferguson Hydraulic Pump Drive Shaft
$74.00
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NEW Hydraulic Pump Cover Gasket for Ford New Holland 1800 SERIES 2000
NEW Hydraulic Pump Cover Gasket for Ford New Holland 1800 SERIES 2000
$19.95
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TISCO  9N617A FORD MF HYDRAULIC PUMP CAM BLOCK 9N2N8N  TE20 TO20 30
TISCO 9N617A FORD MF HYDRAULIC PUMP CAM BLOCK 9N2N8N TE20 TO20 30
$40.00
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TISCO  9N649A HYDRAULIC PUMP FDMF BUSHING 9N2N8N TE20TO20 30 SHIPS FREE
TISCO 9N649A HYDRAULIC PUMP FDMF BUSHING 9N2N8N TE20TO20 30 SHIPS FREE
$24.00
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CCPN600B Hydraulic Pump Repair Kit
CCPN600B Hydraulic Pump Repair Kit
$34.99
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ALLIS CHALMERS DUAL HYDRAULIC PUMP 79016058 70269936
ALLIS CHALMERS DUAL HYDRAULIC PUMP 79016058 70269936
$1,765.00
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Massey Ferguson Hydraulic Pump Repair Kit W Valve Chambers 135 165175 178
Massey Ferguson Hydraulic Pump Repair Kit W Valve Chambers 135 165175 178
$198.00
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ALLIS CHALMERS HYDRAULIC PUMP 70248735 190 GAS 190XT DIESEL
ALLIS CHALMERS HYDRAULIC PUMP 70248735 190 GAS 190XT DIESEL
$2,183.00
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ALLIS CHALMERS HYDRAULIC PUMP TRIPLE 70249437 180 185
ALLIS CHALMERS HYDRAULIC PUMP TRIPLE 70249437 180 185
$1,835.00
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Massey Ferguson Hydraulic Pump Repair Kit 1810858M91 35 35 X 65 765 TO35
Massey Ferguson Hydraulic Pump Repair Kit 1810858M91 35 35 X 65 765 TO35
$198.00
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Exmark Mower Hydrostatic Drive Pump Hydraulic System Oil Filter Mount
Exmark Mower Hydrostatic Drive Pump Hydraulic System Oil Filter Mount
$20.00
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FORD Main Hydraulic Pump A42 L 5179714
FORD Main Hydraulic Pump A42 L 5179714
$238.50
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White Oliver Replacement Hydraulic Pump 2 70 1600 1650 1750 1800 1850 19
White Oliver Replacement Hydraulic Pump 2 70 1600 1650 1750 1800 1850 19
$493.75
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OLIVER 1250 HYDRAULIC PUMP 670668a
OLIVER 1250 HYDRAULIC PUMP 670668a
$228.00
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WHITE Main Hydraulic Pump A42 L 909916 1930226
WHITE Main Hydraulic Pump A42 L 909916 1930226
$268.50
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FIAT Tractor Hydraulic Pump 5179728 8282886 5169039
FIAT Tractor Hydraulic Pump 5179728 8282886 5169039
$199.95
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FORD Tractor Hydraulic Pump 5129486 5179728 8282886 TL70 4635 4835
FORD Tractor Hydraulic Pump 5129486 5179728 8282886 TL70 4635 4835
$214.50
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WHITE CRAWLER TRACTOR W LOADER HYDRAULIC PUMP 1909916 1930226 5120850 516977
WHITE CRAWLER TRACTOR W LOADER HYDRAULIC PUMP 1909916 1930226 5120850 516977
$250.00
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WHITE TRACTOR HYDRAULIC PUMP 5121276 1370 1365
WHITE TRACTOR HYDRAULIC PUMP 5121276 1370 1365
$138.00
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FRONT MOUNT HYDRAULIC PUMP BACKHOE CRAWLER LOADER DROP SHIP MASSEY FERGUSON 225
FRONT MOUNT HYDRAULIC PUMP BACKHOE CRAWLER LOADER DROP SHIP MASSEY FERGUSON 225
$535.00
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New Gleaner Combine Hydraulic Pump Belt 71152608
New Gleaner Combine Hydraulic Pump Belt 71152608
$14.00
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NEW Hydraulic pump filter for Massey Ferguson Tractor 362 362 375 383 390 390T
NEW Hydraulic pump filter for Massey Ferguson Tractor 362 362 375 383 390 390T
$19.95
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New Gleaner Combine Hydraulic Pump Belt 71152609
New Gleaner Combine Hydraulic Pump Belt 71152609
$14.00
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New Gleaner Combine Hydraulic Pump Belt 71167408
New Gleaner Combine Hydraulic Pump Belt 71167408
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New Gleaner Combine Hydraulic Pump Belt 71194117
New Gleaner Combine Hydraulic Pump Belt 71194117
$17.00
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NEW Hydraulic pump filter for Massey Ferguson Tractor 393 396 398 399
NEW Hydraulic pump filter for Massey Ferguson Tractor 393 396 398 399
$19.95
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38240 76100 KUBOTA L235 L2402 L275 HYDRAULIC PUMP
38240 76100 KUBOTA L235 L2402 L275 HYDRAULIC PUMP
$249.99
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MASSEY FERGUSON HYDRAULIC PUMP 1684582M92 135 150 165 175 20 235 30 40 180
MASSEY FERGUSON HYDRAULIC PUMP 1684582M92 135 150 165 175 20 235 30 40 180
$525.00
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JOHN DEERE 4020 3020 4010 3010 HYDRAULIC PUMP STROKE CONTROL VALVE R32442R
JOHN DEERE 4020 3020 4010 3010 HYDRAULIC PUMP STROKE CONTROL VALVE R32442R
$50.00
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JOHN DEERE 4020 3020 4010 3010 HYDRAULIC PUMP SHAFT
JOHN DEERE 4020 3020 4010 3010 HYDRAULIC PUMP SHAFT
$50.00
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AR94661 New John Deere Hydraulic Pump Assembly 4000 4020 4320 + 1 Year Warranty
AR94661 New John Deere Hydraulic Pump Assembly 4000 4020 4320 + 1 Year Warranty
$920.50
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T22915 New John Deere Hydraulic Pump Drive Shaft 2030 2440 2630 2640 300B 302A +
T22915 New John Deere Hydraulic Pump Drive Shaft 2030 2440 2630 2640 300B 302A +
$115.40
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M1769T John Deere 40 320 330 Hydraulic Pump Base
M1769T John Deere 40 320 330 Hydraulic Pump Base
$95.00
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M1770T John Deere 40 320 330 Hydraulic Pump Cover
M1770T John Deere 40 320 330 Hydraulic Pump Cover
$95.00
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NAA867A Ford New Holland Tractor Five 5 Hydraulic Pump Cover Gaskets
NAA867A Ford New Holland Tractor Five 5 Hydraulic Pump Cover Gaskets
$18.00
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3072695R91 New International Tractor 424 444 Hydraulic Pump with Power Steering
3072695R91 New International Tractor 424 444 Hydraulic Pump with Power Steering
$477.25
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John Deere Tandem Hydraulic Pump AR55346
John Deere Tandem Hydraulic Pump AR55346
$499.00
Time Remaining: 1d 6h 16m

Ford Hydraulic Pump Assembly DONN600F 1 Year Warranty
Ford Hydraulic Pump Assembly DONN600F 1 Year Warranty
$445.00
Time Remaining: 1d 6h 16m

John Deere Hydraulic Pump Assembly AR103033 or AR103036
John Deere Hydraulic Pump Assembly AR103033 or AR103036
$900.00
Time Remaining: 1d 6h 16m

Case 1835 Uniloader Hydraulic Pump
Case 1835 Uniloader Hydraulic Pump
$100.00
Time Remaining: 1d 6h 28m