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.

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
$715.50
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JCB ROBOT HYDRAULIC PUMP NEW 20 925349 FITS 160 170 180 150 + VAT
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 Case International Tractor 3088 3288 3688 786 886 986
NEW Hydraulic Pump Case International Tractor 3088 3288 3688 786 886 986
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NEW Hydraulic Pump for Case International Tractor 544 WITH C200 D239 ENGINES
NEW Hydraulic Pump for Case International Tractor 544 WITH C200 D239 ENGINES
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NEW Hydraulic Pump for Case International CX50 CX60 CX70 CX80 CX90 3220
NEW Hydraulic Pump for Case International CX50 CX60 CX70 CX80 CX90 3220
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R27487 New John Deere 3010  4010 Tractor 14 Spline Hydraulic Pump Drive Shaft
R27487 New John Deere 3010 4010 Tractor 14 Spline Hydraulic Pump Drive Shaft
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New 70254195 Allis Chalmers Hydraulic Pump Gear Plate 200 210 220 190 190XT III
New 70254195 Allis Chalmers Hydraulic Pump Gear Plate 200 210 220 190 190XT III
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HYDRAULIC PUMP FORD 2000 3000 2310 2600 3600 3610 5610
HYDRAULIC PUMP FORD 2000 3000 2310 2600 3600 3610 5610
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NEW Hydraulic Pump Gear for Case International Tractor 444 B275
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 +
R43075 New John Deere Tractor Hydraulic Pump Drive Shaft Coupler 4040 4230 +
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708639M91 Massey Ferguson 40B 165 175 Hydraulic Pump Adapter Plate Drive Hub +
708639M91 Massey Ferguson 40B 165 175 Hydraulic Pump Adapter Plate Drive Hub +
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FORD TRACTOR 730 LOADER HYDRAULIC PUMP DRIVE SHAFT 7701044
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Case IH 3063911R93 C114 82L05699 Case Hydraulic Power Steering Pump
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NEW FORD TRACTOR HYDRAULIC PUMP COMPRESSION NUT ASSEMBLY 2000 3000 4000 4400
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196482C2 New Case IH Auxiliary Hydraulic Pump Drive Pulley Hub 1420 1470 1640 +
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Ford Hydraulic Pump Assembly D1NN600B
Ford Hydraulic Pump Assembly D1NN600B
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New Case IH Tractor 17 GPM Hydraulic Pump 766 966 1066 1466 1468 1568 HYDRO 186
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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
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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K962635 DAVID BROWN Hydraulic Pump 1210 1212 780 880 885 885N 990 995 CASE IH
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
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1967 Ford 5000 Tractor Hydraulic Pump
1967 Ford 5000 Tractor Hydraulic Pump
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MASSEY FERGUSON INDUSTRIAL 20C 30B 30D HYDRAULIC PUMP DRIVE SHAFT 729563M91
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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
NEW Hydraulic Pump Gear for Case International Tractor 2444 With BD154 ENG
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NEW Hydraulic Pump Case International Tractor 1468 1486 1566 1568 1586
NEW Hydraulic Pump Case International Tractor 1468 1486 1566 1568 1586
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HYDRAULIC PUMP MASSEY FERGUSON MF 362 365 375 390 390T 393 394S 396 398
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AR55346 New John Deere Tractor Hydraulic Pump 820 830 2040 Open Center
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John Deere Tractor Hydraulic Pump  RE73947  RE72058
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
HYDRAULIC PUMP 135 150 165 175 175 178 180 2135 235 245 20 30 40
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R55009 Used Hydraulic Pump Support John Deere 4240 4440 4430 4630 Tractors
R55009 Used Hydraulic Pump Support John Deere 4240 4440 4430 4630 Tractors
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NEW Hydraulic Pump Case International Tractor 986 1026 1206 1256 1456 1466
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
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
NEW Hydraulic Pump Gear for Case International Tractor 384 93 COMBINE DIESEL
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Vintage allis chalmers WD45 tractor hydraulic pump assembly AC tractor hydraulic
Vintage allis chalmers WD45 tractor hydraulic pump assembly AC tractor hydraulic
$50.00 (1 Bid)
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Vintage case VAC tractor hydraulic pump cutlivator lift pump unit case hyd pump
Vintage case VAC tractor hydraulic pump cutlivator lift pump unit case hyd pump
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Vintage case VAC tractor hydraulic pump linkage an lever assembly hyd lever
Vintage case VAC tractor hydraulic pump linkage an lever assembly hyd lever
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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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1947 Farmall Cub Tractor Hydraulic Pump Delete Cover
1947 Farmall Cub Tractor Hydraulic Pump Delete Cover
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1176000 Tandem Hydraulic Pump Fits Duetz DXAB 80 DXAB 86 DXAB 92 DX3 60 DX3 70
1176000 Tandem Hydraulic Pump Fits Duetz DXAB 80 DXAB 86 DXAB 92 DX3 60 DX3 70
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HYDRAULIC PUMP CASE  DAVID BROWN TRACTORS K962635
HYDRAULIC PUMP CASE DAVID BROWN TRACTORS K962635
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HYDRAULIC PUMP DAVID BROWN TRACTORS K919048
HYDRAULIC PUMP DAVID BROWN TRACTORS K919048
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Diesel Kiki hydraulic pump
Diesel Kiki hydraulic pump
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Ford 9n 2n 8n Hydraulic Pump Set Crankshaft Pulley Hub 6 spline
Ford 9n 2n 8n Hydraulic Pump Set Crankshaft Pulley Hub 6 spline
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Case IH Hydraulic Pump Assembly K919048
Case IH Hydraulic Pump Assembly K919048
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Ford New Holland Hydraulic pump
Ford New Holland Hydraulic pump
$150.00
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CASE IH FARMALL HYDRAULIC MAIN HITCH PUMP 373964R93 70933C91
CASE IH FARMALL HYDRAULIC MAIN HITCH PUMP 373964R93 70933C91
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HYDRAULIC MAIN HITCH PUMP 70935C91 CASE IH FARMALL
HYDRAULIC MAIN HITCH PUMP 70935C91 CASE IH FARMALL
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HYDRAULIC PUMP 128191C91 CASE IH FARMALL
HYDRAULIC PUMP 128191C91 CASE IH FARMALL
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HYDRAULIC PUMP 128190C91 CASE IH FARMALL
HYDRAULIC PUMP 128190C91 CASE IH FARMALL
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New Hydraulic Pump Fits John Deere 820 830 920 930 2040 AR55346
New Hydraulic Pump Fits John Deere 820 830 920 930 2040 AR55346
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Massey Ferguson 252569M94 Hydraulic Pump 300 410 510 540 550
Massey Ferguson 252569M94 Hydraulic Pump 300 410 510 540 550
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Massey Ferguson Hydraulic Pump 886821M93 886821M94 135 165 175 245 275 590 690
Massey Ferguson Hydraulic Pump 886821M93 886821M94 135 165 175 245 275 590 690
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Renault Hydraulic Pump 7700706110 7700013742 656 751 462 551 681 951 981
Renault Hydraulic Pump 7700706110 7700013742 656 751 462 551 681 951 981
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Ford New Holland Hydraulic Pump  D2NN600B 81826808
Ford New Holland Hydraulic Pump D2NN600B 81826808
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CASE SC HYDRAULIC PUMP DRIVE CHAIN B12475
CASE SC HYDRAULIC PUMP DRIVE CHAIN B12475
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HYDRAULIC PUMP DRIVE SHAFT COUPLER JOHN DEERE 4040 4230
HYDRAULIC PUMP DRIVE SHAFT COUPLER JOHN DEERE 4040 4230
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P 192160 Crankshaft Pulley FORD 9N 2N 8N for Front Hydraulic Pump
P 192160 Crankshaft Pulley FORD 9N 2N 8N for Front Hydraulic Pump
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John Deere Complete Hydraulic Pump Coupling  L34569 R72739 R7820
John Deere Complete Hydraulic Pump Coupling L34569 R72739 R7820
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Hydraulic Pump for White JET STAR 4 TRACTOR 207001354
Hydraulic Pump for White JET STAR 4 TRACTOR 207001354
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Hydraulic Pump Single Stage for Massey Ferguson 3505 TRACTOR 3038732M2
Hydraulic Pump Single Stage for Massey Ferguson 3505 TRACTOR 3038732M2
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Hydraulic Pump Single Stage for Massey Ferguson 2640 TRACTOR 3038732M2
Hydraulic Pump Single Stage for Massey Ferguson 2640 TRACTOR 3038732M2
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3038732M2 Hydraulic Pump Single Stage for Massey Ferguson 3660 TRACTOR
3038732M2 Hydraulic Pump Single Stage for Massey Ferguson 3660 TRACTOR
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Hydraulic Pump Single Stage for Massey Ferguson 2675 TRACTOR 3038732M2
Hydraulic Pump Single Stage for Massey Ferguson 2675 TRACTOR 3038732M2
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3038732M2 Hydraulic Pump Single Stage for Massey Ferguson 3525 TRACTOR
3038732M2 Hydraulic Pump Single Stage for Massey Ferguson 3525 TRACTOR
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Tandem Hydraulic Pump for Case 1690 TRACTOR K310386
Tandem Hydraulic Pump for Case 1690 TRACTOR K310386
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Hydraulic Pump Single Stage for Massey Ferguson 2705 TRACTOR 3038732M2
Hydraulic Pump Single Stage for Massey Ferguson 2705 TRACTOR 3038732M2
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