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.

Ford New Holland Hydraulic Pump  D2NN600B 81826808
Ford New Holland Hydraulic Pump D2NN600B 81826808
$455.00
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Belarus tractor hydraulic pump drive T25 250AS 250
Belarus tractor hydraulic pump drive T25 250AS 250
$289.90
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Hydraulic Pump John Deere Tractor R197623 5103 5105 5200 5203 5205 5210 5215
Hydraulic Pump John Deere Tractor R197623 5103 5105 5200 5203 5205 5210 5215
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JOHN DEERE HYDRAULIC PUMP AR39695 R 3010 4010
JOHN DEERE HYDRAULIC PUMP AR39695 R 3010 4010
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Massey Ferguson Hydraulic Pump Single Stage  3038732M2  3790723M
Massey Ferguson Hydraulic Pump Single Stage 3038732M2 3790723M
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HYDRAULIC PUMP JOHN DEERE SPLINED SHAFT AR56160 R
HYDRAULIC PUMP JOHN DEERE SPLINED SHAFT AR56160 R
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Daewoo Excavator DH220 225 258 7 Hydrostatic Hydraulic Pump
Daewoo Excavator DH220 225 258 7 Hydrostatic Hydraulic Pump
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Daewoo Excavator DH215 225 9 Hydrostatic Hydraulic Pump
Daewoo Excavator DH215 225 9 Hydrostatic Hydraulic Pump
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Replacement Drive Pin for Coupler Drive on Hydraulic Pump For John Deere R46345
Replacement Drive Pin for Coupler Drive on Hydraulic Pump For John Deere R46345
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272085M94 New Massey Ferguson 550 750 760 850 860 Complete Main Hydraulic Pump
272085M94 New Massey Ferguson 550 750 760 850 860 Complete Main Hydraulic Pump
$628.97
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Daewoo Excavator DH280LC Hydrostatic Hydraulic Pump
Daewoo Excavator DH280LC Hydrostatic Hydraulic Pump
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Ford Hydraulic Pump Assembly DONN600F 1 Year Warranty
Ford Hydraulic Pump Assembly DONN600F 1 Year Warranty
$495.00
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AR97872 John Deere Hydraulic Pump Assembly 300 500 600 2030 2350 2440 2510 +
AR97872 John Deere Hydraulic Pump Assembly 300 500 600 2030 2350 2440 2510 +
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AR90459 New John Deere Hydraulic Pump Assembly 300 500 600 2030 2350 2440 2510 +
AR90459 New John Deere Hydraulic Pump Assembly 300 500 600 2030 2350 2440 2510 +
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Daewoo Excavator DH300LC 7 Hydrostatic Hydraulic Pump
Daewoo Excavator DH300LC 7 Hydrostatic Hydraulic Pump
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3063911R93 Hydraulic Pump Power Steering Fits Case IH2300A444B414364384
3063911R93 Hydraulic Pump Power Steering Fits Case IH2300A444B414364384
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MASSEY FERGUSON 135 150 165 175 178 180 202 204 302+++ HYDRAULIC PUMP KIT 556602
MASSEY FERGUSON 135 150 165 175 178 180 202 204 302+++ HYDRAULIC PUMP KIT 556602
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NEW Hydraulic Pump piston for Ford Tractor 2N 8N 9N 9N615
NEW Hydraulic Pump piston for Ford Tractor 2N 8N 9N 9N615
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Hyundai Excavator R130LC Hydrostatic Hydraulic Pump
Hyundai Excavator R130LC Hydrostatic Hydraulic Pump
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K944950 Case David Brown Hydraulic Pump Drive Shaft 1210 1212 1410 1412 1490 +
K944950 Case David Brown Hydraulic Pump Drive Shaft 1210 1212 1410 1412 1490 +
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5129478 New Hesston Hydraulic Pump 580 640 680 780 880 980 55 46 60 56 65 46 +
5129478 New Hesston Hydraulic Pump 580 640 680 780 880 980 55 46 60 56 65 46 +
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Hyundai Excavator R200 Hydrostatic Hydraulic Pump
Hyundai Excavator R200 Hydrostatic Hydraulic Pump
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Hyundai Excavator R200LC Hydrostatic Hydraulic Pump
Hyundai Excavator R200LC Hydrostatic Hydraulic Pump
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John Deere AT174042 Hydraulic Pump s41 F
John Deere AT174042 Hydraulic Pump s41 F
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181066M91 New Massey Ferguson Tractor Hydraulic Pump Cam Block TE20 TEA20 TO20 +
181066M91 New Massey Ferguson Tractor Hydraulic Pump Cam Block TE20 TEA20 TO20 +
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HYDRAULIC PUMP JOHN DEERE TRACTOR 1020 1520 1530 2020 2030 2040 COTTON PICKER
HYDRAULIC PUMP JOHN DEERE TRACTOR 1020 1520 1530 2020 2030 2040 COTTON PICKER
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JOHN DEERE HYDRAULIC PUMP 310B 410 500C 640 670 740 740A AR101288 AR99845 NEW
JOHN DEERE HYDRAULIC PUMP 310B 410 500C 640 670 740 740A AR101288 AR99845 NEW
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A RE29109 Hydraulic Pump Overhaul Kit fits many John Deere 4020 4320 4620 4630 +
A RE29109 Hydraulic Pump Overhaul Kit fits many John Deere 4020 4320 4620 4630 +
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Hydraulic Pump IH FARMALL Allis John Deere Ford Case
Hydraulic Pump IH FARMALL Allis John Deere Ford Case
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FORD 9N 2N 8N FERGUSON TE20 TO20 TO30+++ HYDRAULIC PUMP RELIEF VALVE 8N638 60023
FORD 9N 2N 8N FERGUSON TE20 TO20 TO30+++ HYDRAULIC PUMP RELIEF VALVE 8N638 60023
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FORD HYDRAULIC GEAR TYPE PUMP F0NN600BB 5640 6640 7740 7840 8240 8340
FORD HYDRAULIC GEAR TYPE PUMP F0NN600BB 5640 6640 7740 7840 8240 8340
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John Deere Hydraulic Pump Assembly AR97872 1 Year Warranty
John Deere Hydraulic Pump Assembly AR97872 1 Year Warranty
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Du Al Loader with Snow Bucket and Hydraulic Pump
Du Al Loader with Snow Bucket and Hydraulic Pump
$300.00
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Case IH 986 1086 1486 1586 3388 3588 3788 6588 1263450c92 PPH hydraulic pump
Case IH 986 1086 1486 1586 3388 3588 3788 6588 1263450c92 PPH hydraulic pump
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A 70933C91 Hydraulic Pump Fits Many Case IH 340 460 504 560 1066 1206 1466 1566
A 70933C91 Hydraulic Pump Fits Many Case IH 340 460 504 560 1066 1206 1466 1566
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A 70935C91 Hydraulic Pump Fits Many Case IH Hydro 70 Hydro 86 Hydro 186 806 3488
A 70935C91 Hydraulic Pump Fits Many Case IH Hydro 70 Hydro 86 Hydro 186 806 3488
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AR97872 Hydraulic Pump Fits John Deere 99509960996599703005006001550
AR97872 Hydraulic Pump Fits John Deere 99509960996599703005006001550
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FORD 9N 2N 8N LOADER HYDRAULIC PUMP CRANKSHAFT DRIVE PULLEY 192152
FORD 9N 2N 8N LOADER HYDRAULIC PUMP CRANKSHAFT DRIVE PULLEY 192152
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A 1543242C1 Hydraulic Pump Fits Case International Model 2870 Tractor A150825
A 1543242C1 Hydraulic Pump Fits Case International Model 2870 Tractor A150825
$2,800.00
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IH Farmall 806 1206 756 856 1256 1456 766 966 1066 1086 Hydraulic Pump 332
IH Farmall 806 1206 756 856 1256 1456 766 966 1066 1086 Hydraulic Pump 332
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E1NN600AA NEW Hydraulic Power Steering Pump Gear Type Ford 2000 3000 +
E1NN600AA NEW Hydraulic Power Steering Pump Gear Type Ford 2000 3000 +
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FORD Hydraulic Pump 5179726 TL100 TL70 TL80 TL90 TN55 TN65 TN70 TN75 8160 8260 +
FORD Hydraulic Pump 5179726 TL100 TL70 TL80 TL90 TN55 TN65 TN70 TN75 8160 8260 +
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original john deere 1965 4020 hydraulic pump mount cast 4010 3020 3010
original john deere 1965 4020 hydraulic pump mount cast 4010 3020 3010
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original john deere 1965 4020 hydraulic pump 3020 4230 4030 4430 4040 4240
original john deere 1965 4020 hydraulic pump 3020 4230 4030 4430 4040 4240
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NEW MASSEY FERGUSON 135245 Hydraulic Pump Plate BodyfrontPart  181996M1
NEW MASSEY FERGUSON 135245 Hydraulic Pump Plate BodyfrontPart 181996M1
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NOS Hydreco Hydraulic Pump Counter Clockwise Rotation 1515E1B1AL 1520706
NOS Hydreco Hydraulic Pump Counter Clockwise Rotation 1515E1B1AL 1520706
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NEW MASSEY FERGUSON 135245 Hydraulic Pump Plate BodyRearPart  181995M3
NEW MASSEY FERGUSON 135245 Hydraulic Pump Plate BodyRearPart 181995M3
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252569M94 New Massey Ferguson Combine 300 410 510 540 550 Compl Hydraulic Pump
252569M94 New Massey Ferguson Combine 300 410 510 540 550 Compl Hydraulic Pump
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R34359 New Hydraulic Pump Coupler 3020 4010 4020 5010 5020++
R34359 New Hydraulic Pump Coupler 3020 4010 4020 5010 5020++
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A 70249828 Hydraulic Pump fits various Allis Chalmers AC 170 and 175 Tractors
A 70249828 Hydraulic Pump fits various Allis Chalmers AC 170 and 175 Tractors
$1,900.00
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Ford 2000 3000 4000 5000 7000 Hydraulic Pump Drive Gear Camshaft Cover 81816594
Ford 2000 3000 4000 5000 7000 Hydraulic Pump Drive Gear Camshaft Cover 81816594
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A 70256067 Hydraulic Pump fits various Allis Chalmers AC 170 and 175 Tractors
A 70256067 Hydraulic Pump fits various Allis Chalmers AC 170 and 175 Tractors
$1,900.00
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A 70263552 Hydraulic Pump fits various Allis Chalmers AC 6060 and 6080 Tractors
A 70263552 Hydraulic Pump fits various Allis Chalmers AC 6060 and 6080 Tractors
$2,100.00
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IH International Farmall H SN 267057 Below Hydraulic Pump Back Plated Manifold
IH International Farmall H SN 267057 Below Hydraulic Pump Back Plated Manifold
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Ford 5000 5200 Hydraulic Pump Idler Gear Support C5NNN634A
Ford 5000 5200 Hydraulic Pump Idler Gear Support C5NNN634A
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PRINCE HC PTO 1 A 21 GPM 540 RPM SIX SPLINE PTO TRACTOR HYDRAULIC PUMP NEW
PRINCE HC PTO 1 A 21 GPM 540 RPM SIX SPLINE PTO TRACTOR HYDRAULIC PUMP NEW
$412.00
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A 70270905 Hydraulic Pump fits various Allis Chalmers 6060 6070
A 70270905 Hydraulic Pump fits various Allis Chalmers 6060 6070
$1,179.00
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Universal Long Tractor Main Hydraulic Pump PRD2216D 33 L m
Universal Long Tractor Main Hydraulic Pump PRD2216D 33 L m
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A 72074620 Hydraulic Pump fits various Allis Chalmers AC Model 6040 Tractors
A 72074620 Hydraulic Pump fits various Allis Chalmers AC Model 6040 Tractors
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A 70248736 Hydraulic Pump fits various Allis Chalmers Model 190
A 70248736 Hydraulic Pump fits various Allis Chalmers Model 190
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NEW FORD TRACTOR HYDRAULIC PUMP VALVE 8N 9N 2N AND MASSEY FERGUSON TO20 TO30
NEW FORD TRACTOR HYDRAULIC PUMP VALVE 8N 9N 2N AND MASSEY FERGUSON TO20 TO30
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Hydraulic Pump Drive Coupler Kit Drive Coupler Pins Bushings John Deere Tractor
Hydraulic Pump Drive Coupler Kit Drive Coupler Pins Bushings John Deere Tractor
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A 79016058 Hydraulic Pump fits various Allis Chalmers Allis Chalmer 7000 Tractor
A 79016058 Hydraulic Pump fits various Allis Chalmers Allis Chalmer 7000 Tractor
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A 70257213 Hydraulic Pump fits various Allis Chalmers AC 190 190XT 190XTIII 200
A 70257213 Hydraulic Pump fits various Allis Chalmers AC 190 190XT 190XTIII 200
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3146446R93 New Case IH Tractor Hydraulic Pump 1046 1246 523 624 654 724 824 946
3146446R93 New Case IH Tractor Hydraulic Pump 1046 1246 523 624 654 724 824 946
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Massey Ferguson 184773M93 Hydraulic Pump TO35 35 50 65
Massey Ferguson 184773M93 Hydraulic Pump TO35 35 50 65
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A 70248735 Hydraulic Pump fits various Allis Chalmers AC 190 and 190XT Tractor
A 70248735 Hydraulic Pump fits various Allis Chalmers AC 190 and 190XT Tractor
$2,189.00
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Ford New Holland Hydraulic Pump E2NN600AB E2N600AB 83996336
Ford New Holland Hydraulic Pump E2NN600AB E2N600AB 83996336
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R45822 Four 4 John Deere Hydraulic Pump Shaft Drive Pin Bushings
R45822 Four 4 John Deere Hydraulic Pump Shaft Drive Pin Bushings
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AR103033 HYDRAULIC PUMP 8 PISTON NEW 1 year waranty
AR103033 HYDRAULIC PUMP 8 PISTON NEW 1 year waranty
$795.00
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AR94661 John Deere Brand New Hydraulic Pump 65cm
AR94661 John Deere Brand New Hydraulic Pump 65cm
$970.00
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R38348 John Deere Hydraulic Pump Drive Coupler 300 301 302 380 400 401 480C 3120
R38348 John Deere Hydraulic Pump Drive Coupler 300 301 302 380 400 401 480C 3120
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NEW Shimadzu D05 169R878 Tractor Hydraulic Gear Pump 1113 2530 13973
NEW Shimadzu D05 169R878 Tractor Hydraulic Gear Pump 1113 2530 13973
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New 7707570 Ford New Holland Hydraulic Pump Shaft Coupler fits 730 Industrial
New 7707570 Ford New Holland Hydraulic Pump Shaft Coupler fits 730 Industrial
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MASSEY FERGUSON 135 165 175 30 40B 50A++ HYDRAULIC PUMP DRIVE ADAPTER 708639M91
MASSEY FERGUSON 135 165 175 30 40B 50A++ HYDRAULIC PUMP DRIVE ADAPTER 708639M91
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E1NN600AB New Ford Hydraulic Pump  Gasket 2000 2310 2600 3000 3310 3600 5610 +
E1NN600AB New Ford Hydraulic Pump Gasket 2000 2310 2600 3000 3310 3600 5610 +
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