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.

Hydraulic Pump Kit Massey Ferguson Tractor MF30 1080 135 148 150 165 168 175 178
Hydraulic Pump Kit Massey Ferguson Tractor MF30 1080 135 148 150 165 168 175 178
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O Ring Kit Hydraulic Pump Kit Massey Ferguson Tractor MF20E MF40E 1080 135 148
O Ring Kit Hydraulic Pump Kit Massey Ferguson Tractor MF20E MF40E 1080 135 148
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Massey Ferguson 3038732M2 Hydraulic Pump Single Stage 2640 2675 2745 3650 3680 +
Massey Ferguson 3038732M2 Hydraulic Pump Single Stage 2640 2675 2745 3650 3680 +
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D35016 New Case Transmission Hydraulic Gear Charge Pump 450 450B 455B
D35016 New Case Transmission Hydraulic Gear Charge Pump 450 450B 455B
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D8NN600AA HYDRAULIC PUMP 266 GPM FITS Ford New Holland 445540545A550
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D8NN600DA HYDRAULIC PUMP 22 GPM FITS Ford New Holland 340A340B445445A
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FORD TRACTOR HYDRAULIC PUMP REPAIR KIT 8N 9N 2N
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Ford Hydraulic Pump 81871528 1 Year Warranty
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NEW Hydraulic Pump for Case International Tractor 606 WITH C221 D236 ENGINES
NEW Hydraulic Pump for Case International Tractor 606 WITH C221 D236 ENGINES
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NEW Hydraulic Pump Case International Tractor 1086 1566 1568 1586 3088 3288
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NEW Hydraulic Pump for Case International 495 574 584 595 674 684 685
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Deutz Hydraulic Pump Assembly 01175656
Deutz Hydraulic Pump Assembly 01175656
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E1NN600EA HYDRAULIC PUMP FITS Ford New Holland511056106610681074107610
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NEW Hydraulic Pump for Case International Tractor 560 WITH C263 D282 ENGINES
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NEW Hydraulic Pump Case International Tractor 1086 1486
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New Massey Ferguson Hydraulic Pump 1076957m91
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NEW Hydraulic Pump Case International Tractor 21026 21206 21256 21456
NEW Hydraulic Pump Case International Tractor 21026 21206 21256 21456
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John Deere Hydraulic Pump RE223233 Fits 5045 5055 5065 5075
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NEW Hydraulic Pump Gear for Case International Tractor B414 With BD154 ENG
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New Hydraulic Pump Piston Type Replaces C5NN600AA Fits Ford 2000 3000 4000
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backhoe hydraulic pump
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case 830 hydraulic pump
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Hydraulic Pump Kit for Ford 8N 9N 2N  Massey Ferguson TE20 TO2O TO30 PN HPOK1
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Massey Ferguson 3038730M2 Hydraulic Main Pump 2620 2720 3650 3690 8140 8160
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JCB ROBOT HYDRAULIC PUMP NEW 20 925349 FITS 160 170 180 150 + VAT
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Massey Ferguson 272085M94 Hydraulic Pump 550 750 760 850 860
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Case IH 986 1086 1486 1586 3388 3588 3788 6588 1263450c92 PPH hydraulic pump
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R27487 New John Deere 3010  4010 Tractor 14 Spline Hydraulic Pump Drive Shaft
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HYDRAULIC PUMP Massey Ferguson 175 180 235 245 265 275 283 285 298 690 531607M93
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HYDRAULIC PUMP FORD 2000 3000 2310 2600 3600 3610 5610
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NEW Hydraulic Pump for Case International Tractor 504 WITH C153 D188 ENGINES
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NEW Hydraulic Pump for Case International Tractor 856 WITH C310 D407 ENGINES
NEW Hydraulic Pump for Case International Tractor 856 WITH C310 D407 ENGINES
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NEW Hydraulic Pump Case International Tractor 3288 3388 3488 3588
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708639M91 Massey Ferguson 40B 165 175 Hydraulic Pump Adapter Plate Drive Hub +
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Ford Hydraulic Pump Assembly D1NN600B
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NEW Hydraulic Pump for Case International Tractor 340 C135 D166 ENGINES
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K310386 Tandem Hydraulic Pump Fits Case IH 1594 1690 1694
K310386 Tandem Hydraulic Pump Fits Case IH 1594 1690 1694
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K916535 Tandem Hydraulic Pump Fits Case IH 1290 1390 1394 14901494 DB 1210 1212
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NEW Hydraulic Pump Case International Tractor 706 WITH C291 D282 D310 ENGINES
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NEW Hydraulic Pump for Case International Tractor 806 WITH C301 D361 ENGINES
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NEW Hydraulic Pump Case International Tractor 2706 With C263 ENG
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Ford Hydraulic Pump Safety Valve C7NN638E
Ford Hydraulic Pump Safety Valve C7NN638E
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K962635 DAVID BROWN Hydraulic Pump 1210 1212 780 880 885 885N 990 995 CASE IH
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FIAT Tractor Hydraulic Pump 480 480DT 500 500DT 540 540DT 72 93DT 82 93DT
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NEW Hydraulic Pump Case International Tractor 966 1066 706 With C263 ENG
NEW Hydraulic Pump Case International Tractor 966 1066 706 With C263 ENG
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NEW Hydraulic Pump Gear for Case International Tractor 354 With BD144A ENG
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Vintage case SC tractor hydraulic pump filter assembly and spring parts
Vintage case SC tractor hydraulic pump filter assembly and spring parts
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1967 Ford 5000 Tractor Hydraulic Pump
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