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.

Zetor Hydraulic Pump Suction Screen 3320 3340 4320 4340 5320 5340 6320 6340
Zetor Hydraulic Pump Suction Screen 3320 3340 4320 4340 5320 5340 6320 6340
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D8NN600AA Hydraulic Pump 266 GPM Fits Ford New Holland 445540545A550
D8NN600AA Hydraulic Pump 266 GPM Fits Ford New Holland 445540545A550
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D8NN600DA Hydraulic Pump 22 GPM Fits Ford New Holland 340A340B445445A
D8NN600DA Hydraulic Pump 22 GPM Fits Ford New Holland 340A340B445445A
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Massey Ferguson Tractor Hydraulic Pump  3533911M91 3534941M91 0510525339
Massey Ferguson Tractor Hydraulic Pump 3533911M91 3534941M91 0510525339
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C5NN966A Ford Tractor 2000 2600 3000 3600 4000 4600 Hydraulic Pump Shaft
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Ford Hydraulic Pump 81871528 1 Year Warranty
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NEW Hydraulic Pump Case International Tractor 1086 1566 1568 1586 3088 3288
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
NEW Hydraulic Pump for Case International 495 574 584 595 674 684 685
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Massey Ferguson Replacement Hydraulic Pump  897147M95 1662243M91 3774617M92
Massey Ferguson Replacement Hydraulic Pump 897147M95 1662243M91 3774617M92
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Original Ford 3600 Diesel Tractor Hydraulic Pump
Original Ford 3600 Diesel Tractor Hydraulic Pump
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E1NN600EA Hydraulic Pump Fits Ford New Holland511056106610681074107610
E1NN600EA Hydraulic Pump Fits Ford New Holland511056106610681074107610
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70935C91 Main Hydraulic Pump for International 706 966 1066 1466 1566 ++ Tractor
70935C91 Main Hydraulic Pump for International 706 966 1066 1466 1566 ++ Tractor
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NEW Hydraulic Pump for Case International Tractor 560 WITH C263 D282 ENGINES
NEW Hydraulic Pump for Case International Tractor 560 WITH C263 D282 ENGINES
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NEW Hydraulic Pump for Case International 3230 4210 4230 4240 385 395 485
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A RE29103 Hydraulic Pump Seal Kit fits many John Deere 3010 4010 5010 6030 7020
A RE29103 Hydraulic Pump Seal Kit fits many John Deere 3010 4010 5010 6030 7020
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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
NEW Hydraulic Pump Gear for Case International Tractor B414 With BD154 ENG
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Massey Ferguson Hydraulic Pump  3597420M91 3595383M91
Massey Ferguson Hydraulic Pump 3597420M91 3595383M91
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FORD 8N FORD TRACTOR HYDRAULIC PUMP
FORD 8N FORD TRACTOR HYDRAULIC PUMP
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Massey Ferguson Hydraulic Pump 3774613M91
Massey Ferguson Hydraulic Pump 3774613M91
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Vintage farmall H tractor hydraulic pump linkage rod belly pump linkage rod IH
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Ford Farm Tractor Hydraulic Pump Hub C5NNN879A New in Box
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HPOK1 Hydraulic Pump Repair Kit for Ford 8N 9N 2N Tractors
HPOK1 Hydraulic Pump Repair Kit for Ford 8N 9N 2N Tractors
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Massey Ferguson 3038730M2 Hydraulic Main Pump 2620 2720 3650 3690 8140 8160
Massey Ferguson 3038730M2 Hydraulic Main Pump 2620 2720 3650 3690 8140 8160
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Massey Ferguson 272085M94 Hydraulic Pump 550 750 760 850 860
Massey Ferguson 272085M94 Hydraulic Pump 550 750 760 850 860
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JCB ROBOT HYDRAULIC PUMP NEW 20 925349 FITS 160 170 180 150 + VAT
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NEW Hydraulic Pump Case International Tractor 786 806 With C301 ENG
NEW Hydraulic Pump Case International Tractor 786 806 With C301 ENG
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NEW Hydraulic Pump for Case International Tractor 544 WITH C200 D239 ENGINES
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HYDRAULIC PUMP FORD 2000 3000 2310 2600 3600 3610 5610
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NEW Hydraulic Pump Gear for Case International Tractor 444 B275
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NEW Hydraulic Pump for Case International Tractor 504 WITH C153 D188 ENGINES
NEW Hydraulic Pump for Case International Tractor 504 WITH C153 D188 ENGINES
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R43075 New John Deere Tractor Hydraulic Pump Drive Shaft Coupler 4040 4230 +
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Case IH 986 1086 1486 1586 3388 3588 3788 6588 1263450c92 PPH hydraulic pump
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708639M91 Massey Ferguson 40B 165 175 Hydraulic Pump Adapter Plate Drive Hub +
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John Deere Parts RE MFG HYDRAULIC PUMP AR39695 R 4010 EARLY MODEL 3010 EA
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FORD TRACTOR 730 LOADER HYDRAULIC PUMP DRIVE SHAFT 7701044
FORD TRACTOR 730 LOADER HYDRAULIC PUMP DRIVE SHAFT 7701044
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Case IH 3063911R93 C114 82L05699 Case Hydraulic Power Steering Pump
Case IH 3063911R93 C114 82L05699 Case Hydraulic Power Steering Pump
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Ford Hydraulic Pump Assembly D1NN600B
Ford Hydraulic Pump Assembly D1NN600B
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Minneapolis Moline Tractor NOS Hydraulic Pump Seal Part  1018432m1
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Minneapolis Moline Tractor NOS Hydraulic Pump Seal Part 1018435m1
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Minneapolis Moline Tractor NOS Hydraulic Pump Gasket Part 1018361m1
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Minneapolis Moline Tractor NOS Hydraulic Pump O Ring Part 1018434m2
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K916535 Tandem Hydraulic Pump Fits Case IH 1290 1390 1394 14901494 DB 1210 1212
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John Deere Hydraulic Pump O ring Kit 1 RE29103 H2
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Ford Hydraulic Pump Safety Valve C7NN638E
Ford Hydraulic Pump Safety Valve C7NN638E
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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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Joyang Hydraulic Gear Pump 31cc L JD06100
Joyang Hydraulic Gear Pump 31cc L JD06100
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1967 Ford 5000 Tractor Hydraulic Pump
1967 Ford 5000 Tractor Hydraulic Pump
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New FarmTrac Tractors Hydraulic Pump 45 60 665 665 DTC 70 + Gasket
New FarmTrac Tractors Hydraulic Pump 45 60 665 665 DTC 70 + Gasket
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NEW Hydraulic Pump for Case International Tractor 966 1066 1466 1468 100
NEW Hydraulic Pump for Case International Tractor 966 1066 1466 1468 100
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NEW Hydraulic Pump Gear for Case International Tractor 2444 With BD154 ENG
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AR55346 New John Deere Tractor Hydraulic Pump 820 830 2040 Open Center
AR55346 New John Deere Tractor Hydraulic Pump 820 830 2040 Open Center
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John Deere Tractor Hydraulic Pump RE73947 RE72058
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HYDRAULIC PUMP 135 150 165 175 175 178 180 2135 235 245 20 30 40
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NEW Hydraulic Pump Case International Tractor 986 1026 1206 1256 1456 1466
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38180 37430 Hydraulic Pump Shaft for Kubota L275 L1802DT L2002DT L2202DT Tractor
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34260 34432 Hydraulic Pump Shaft for Kubota L285 L2600 Tractor
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Massey Ferguson 72242606 Hydraulic Pump
Massey Ferguson 72242606 Hydraulic Pump
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NEW Hydraulic Pump Gear for Case International Tractor 384 93 COMBINE DIESEL
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NEW Hydraulic Pump for Case International 695 784 785 884 885 895 995
NEW Hydraulic Pump for Case International 695 784 785 884 885 895 995
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NEW Hydraulic Pump for Case International Tractor 656 WITH C263 D282 ENGINES
NEW Hydraulic Pump for Case International Tractor 656 WITH C263 D282 ENGINES
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John Deere Hydraulic Pump AXE11707 PG203656 S680 S685 S690 Combine STS Hillmaste
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HYDRAULIC PUMP CASE  DAVID BROWN TRACTORS K962635
HYDRAULIC PUMP CASE DAVID BROWN TRACTORS K962635
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