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 83996272 83996336 E1NN600AA E1NN600AB
Ford New Holland Hydraulic Pump 83996272 83996336 E1NN600AA E1NN600AB
$299.95
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Ford New Holland Hydraulic Pump D5NN600C 8000 8400 8600 8700 9000 9200
Ford New Holland Hydraulic Pump D5NN600C 8000 8400 8600 8700 9000 9200
$489.95
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Ford New Holland Hydraulic Pump E0NN600AC 5110 5610 5610S 5900 6610 6610S
Ford New Holland Hydraulic Pump E0NN600AC 5110 5610 5610S 5900 6610 6610S
$368.95
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Ford New Holland Hydraulic Pump Seal 83925002 front drive gear shaft seal
Ford New Holland Hydraulic Pump Seal 83925002 front drive gear shaft seal
$15.00
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Ford New Holland Hydraulic Pump 83957379 E0NN600AC 5110 5610 5610S 5900
Ford New Holland Hydraulic Pump 83957379 E0NN600AC 5110 5610 5610S 5900
$338.95
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Ford New Holland Hydraulic Pump E7NN3K514CA 250C 260C 340 340A 340B 345C LO
Ford New Holland Hydraulic Pump E7NN3K514CA 250C 260C 340 340A 340B 345C LO
$325.00
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MASSEY FERGUSON 135 Hydraulic Pump Cam Shaft 10 SplinesReplacement  181994M1
MASSEY FERGUSON 135 Hydraulic Pump Cam Shaft 10 SplinesReplacement 181994M1
$44.99
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HYDRAULIC PUMP REPAIR KIT CONTROL VALVE Ford Tractor 2N 8N 9N Massey Ferguson
HYDRAULIC PUMP REPAIR KIT CONTROL VALVE Ford Tractor 2N 8N 9N Massey Ferguson
$169.00
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OEM Agco Hydraulic Pump New 395CIR V  536083D1 HPA4065RB1GLK6090 AG524476
OEM Agco Hydraulic Pump New 395CIR V 536083D1 HPA4065RB1GLK6090 AG524476
$749.00
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70933C91 IH Farmall Hitch Hydraulic Pump Tractor 12 gpm
70933C91 IH Farmall Hitch Hydraulic Pump Tractor 12 gpm
$314.89
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INTERNATIONAL FARMALL Main Hitch Hydraulic Pump New
INTERNATIONAL FARMALL Main Hitch Hydraulic Pump New
$380.00
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70931C91 New IH Farmall Hydraulic Pump 460 560 706 806 826 856 986 1086 1486 +
70931C91 New IH Farmall Hydraulic Pump 460 560 706 806 826 856 986 1086 1486 +
$345.99
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Kubota Hinomoto Massey Ferguson Tractor Hydraulic Pump HP 3
Kubota Hinomoto Massey Ferguson Tractor Hydraulic Pump HP 3
$299.99
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A 70269937 Hydraulic Pump for various Allis Chalmers Allis Chalmers 7000 Tractor
A 70269937 Hydraulic Pump for various Allis Chalmers Allis Chalmers 7000 Tractor
$1,485.00
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ARKUTEC HYDRAULIC HOSE 1 1 2 X 14 1 2 61027021 12 88
ARKUTEC HYDRAULIC HOSE 1 1 2 X 14 1 2 61027021 12 88
$289.00
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BELARUS TRACTOR HYDRAULIC PUMP ROUND 6spl NSH32A300
BELARUS TRACTOR HYDRAULIC PUMP ROUND 6spl NSH32A300
$299.99
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John Deere Hydraulic Pump AR101807
John Deere Hydraulic Pump AR101807
$950.00
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Ford Hydraulic Pump Shaft Assembly C5NN966A
Ford Hydraulic Pump Shaft Assembly C5NN966A
$84.40
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NEW AL161043 AL151513 Hydraulic Pump for John Deere Tractor
NEW AL161043 AL151513 Hydraulic Pump for John Deere Tractor
$1,699.00
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R68548 John Deere 2440 2640 Hydraulic Pump Drive Shaft
R68548 John Deere 2440 2640 Hydraulic Pump Drive Shaft
$150.00
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YANMAR TRACTOR HYDRAULIC PUMP YM1500 1600 1700 1900 2000 more
YANMAR TRACTOR HYDRAULIC PUMP YM1500 1600 1700 1900 2000 more
$373.99
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120114C91 Pump Hydraulic 12 GPM MCV fits Case IH 1086 1486 1568 1586 3088
120114C91 Pump Hydraulic 12 GPM MCV fits Case IH 1086 1486 1568 1586 3088
$415.28
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MAHINDRA TRACTOR HYDRAULIC PUMP FOR 4500 5500 6000 6500 TRACTOR
MAHINDRA TRACTOR HYDRAULIC PUMP FOR 4500 5500 6000 6500 TRACTOR
$339.00
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MAHINDRA TRACTOR HYDRAULIC PUMP FOR 4505 5005 C4005 4525 TRACTOR
MAHINDRA TRACTOR HYDRAULIC PUMP FOR 4505 5005 C4005 4525 TRACTOR
$500.00
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CASE IH TRACTOR HYDRAULIC PUMP
CASE IH TRACTOR HYDRAULIC PUMP
$140.00
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70931C91 Case IH Farmall Hydraulic Pump 12GPM 186 1086 1486 1586 786 886 986
70931C91 Case IH Farmall Hydraulic Pump 12GPM 186 1086 1486 1586 786 886 986
$489.99
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MAHINDRA TRACTOR HYDRAULIC PUMP FOR 475 TRACTOR
MAHINDRA TRACTOR HYDRAULIC PUMP FOR 475 TRACTOR
$140.00
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Massey Ferguson 1250 Hydraulic Steering Pump PN 3702109M91
Massey Ferguson 1250 Hydraulic Steering Pump PN 3702109M91
$150.00
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Belarus tractor Hydraulic pump drive 800 820 900 920
Belarus tractor Hydraulic pump drive 800 820 900 920
$89.00
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R79152 John Deere Hydraulic Pump Shaft 3020 4020 4230 4240 4320 4440 540 540B +
R79152 John Deere Hydraulic Pump Shaft 3020 4020 4230 4240 4320 4440 540 540B +
$74.70
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John Deere Hydraulic Pump Coupling L34569
John Deere Hydraulic Pump Coupling L34569
$15.00
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John Deere Hydraulic Pump Coupling L34432
John Deere Hydraulic Pump Coupling L34432
$16.00
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E0NN600AC Hydraulic Economy Pump Fits Ford NH 5100 5110 5600 5610 5900 6600
E0NN600AC Hydraulic Economy Pump Fits Ford NH 5100 5110 5600 5610 5900 6600
$745.08
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E1NN600AA Hydraulic Mounts on Engine Pump Fits Ford NH 3500 3550 4400 4500
E1NN600AA Hydraulic Mounts on Engine Pump Fits Ford NH 3500 3550 4400 4500
$670.65
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E1NN600AA Hydraulic Economy Pump Fits Ford NH 8210
E1NN600AA Hydraulic Economy Pump Fits Ford NH 8210
$670.65
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E2NN600AB Hydraulic Pump Fits Ford NH 340A 340B 345C 345D 445 445A 445C 445D 450
E2NN600AB Hydraulic Pump Fits Ford NH 340A 340B 345C 345D 445 445A 445C 445D 450
$528.60
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1076957M91 Hydraulic Lift Pump Fits Massey Ferguson Tractor 231 240P
1076957M91 Hydraulic Lift Pump Fits Massey Ferguson Tractor 231 240P
$1,097.22
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1081639M91 Hydraulic Pump Fits Massey Ferguson 135 150 165 175 178 35 35X 50 65
1081639M91 Hydraulic Pump Fits Massey Ferguson 135 150 165 175 178 35 35X 50 65
$743.65
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Massey Ferguson 65 Hydraulic Pump
Massey Ferguson 65 Hydraulic Pump
$80.00
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1346425C1 Pump Hydraulic w Gear Pump Reman Fits Case IH 1896 2090 2094 2096 2290
1346425C1 Pump Hydraulic w Gear Pump Reman Fits Case IH 1896 2090 2094 2096 2290
$2,040.26
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142867C92 Hydraulic Piston Pump Fits Case IH 5088 5288 5488
142867C92 Hydraulic Piston Pump Fits Case IH 5088 5288 5488
$2,193.39
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1543241C1 Hydraulic Pump Fits Case IH Tractor Models 2470 2670
1543241C1 Hydraulic Pump Fits Case IH Tractor Models 2470 2670
$2,512.93
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1543242C1 Hydraulic Pump Fits Case IH Tractor 2870 Replaces A150825
1543242C1 Hydraulic Pump Fits Case IH Tractor 2870 Replaces A150825
$2,380.49
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New Concentric Rockford 2107727 1212 Gear Pump Hydraulic F30W 8E50B2 G1A10R
New Concentric Rockford 2107727 1212 Gear Pump Hydraulic F30W 8E50B2 G1A10R
$245.00
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MF Hydraulic Pump Piston Ring 892604m1
MF Hydraulic Pump Piston Ring 892604m1
$2.29
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303141764 R Re Mfg Hydraulic Pump Closed Center Fits White 170 1755 1855 1870
303141764 R Re Mfg Hydraulic Pump Closed Center Fits White 170 1755 1855 1870
$1,722.65
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303148831 R Re Mfg Hydraulic Pump Closed Center Fits White 100 125 145 160 170
303148831 R Re Mfg Hydraulic Pump Closed Center Fits White 100 125 145 160 170
$1,768.15
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638037 Hydraulic Pump Ford New Holland Combine TR75 TR85
638037 Hydraulic Pump Ford New Holland Combine TR75 TR85
$1,401.07
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70248735 Hydraulic Pump Triple Stage Fits Allis Chalmers Tractor 190 190XT
70248735 Hydraulic Pump Triple Stage Fits Allis Chalmers Tractor 190 190XT
$1,956.29
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70248736 Hydraulic Pump Dual Stange Fits Allis Chalmers Tractor Model 190 190XT
70248736 Hydraulic Pump Dual Stange Fits Allis Chalmers Tractor Model 190 190XT
$2,221.85
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70249469 Pump Hydraulic Dual Fits Allis Chalmers 180 185
70249469 Pump Hydraulic Dual Fits Allis Chalmers 180 185
$1,229.22
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70249828 Hydraulic Pump Fits Allis Chalmers Tractors 170 175
70249828 Hydraulic Pump Fits Allis Chalmers Tractors 170 175
$2,060.90
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70256067 Hydraulic Pump Fits Allis Chalmers Tractors 170 175
70256067 Hydraulic Pump Fits Allis Chalmers Tractors 170 175
$2,060.90
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70257005 Hydraulic Pump Dual Fits Allis Chalmers Tractor 190 190XT 200 210 220
70257005 Hydraulic Pump Dual Fits Allis Chalmers Tractor 190 190XT 200 210 220
$1,749.31
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70257213 Hydraulic Pump Single Fits Allis Chalmers 190 190XT 200
70257213 Hydraulic Pump Single Fits Allis Chalmers 190 190XT 200
$1,388.88
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70269937 Hydraulic PumpSingle Allis Chalmers 7000
70269937 Hydraulic PumpSingle Allis Chalmers 7000
$1,559.24
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72074620 Hydraulic Pump Fits Allis Chalmers Tractor 6040
72074620 Hydraulic Pump Fits Allis Chalmers Tractor 6040
$1,054.99
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79016058 Hydraulic Pump Fits Allis Chalmers 7000 Replaces 70269936
79016058 Hydraulic Pump Fits Allis Chalmers 7000 Replaces 70269936
$1,749.31
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NCA966E New Ford New Holland Tractor Hydraulic Pump Shaft NAA 2000 4000 +
NCA966E New Ford New Holland Tractor Hydraulic Pump Shaft NAA 2000 4000 +
$50.11
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K200465 New Case IH Tractor Hydraulic Pump Drive Coupler w o A C 1594 1690
K200465 New Case IH Tractor Hydraulic Pump Drive Coupler w o A C 1594 1690
$96.12
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F0NN600BB Hydraulic Pump Tandem Gear Fits Ford New Holland 5640 6640 7740 7840
F0NN600BB Hydraulic Pump Tandem Gear Fits Ford New Holland 5640 6640 7740 7840
$903.13
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AR103033 HYDRAULIC PUMP 8 PISTON NEW AFTERMARKET 1 year waranty
AR103033 HYDRAULIC PUMP 8 PISTON NEW AFTERMARKET 1 year waranty
$988.00
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IHC Farmall 460 560 706 806 826 856 HYDRAULIC PUMP
IHC Farmall 460 560 706 806 826 856 HYDRAULIC PUMP
$346.99
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7620 110 Eaton Hydrostatic Hydraulic Piston Pump Repair
7620 110 Eaton Hydrostatic Hydraulic Piston Pump Repair
$4,500.00
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7620 012 Eaton Hydrostatic Hydraulic Piston Pump Repair
7620 012 Eaton Hydrostatic Hydraulic Piston Pump Repair
$5,600.00
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7620 014 Eaton Hydrostatic Hydraulic Piston Pump Repair
7620 014 Eaton Hydrostatic Hydraulic Piston Pump Repair
$4,500.00
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7620 016 Eaton Hydrostatic Hydraulic Piston Pump Repair
7620 016 Eaton Hydrostatic Hydraulic Piston Pump Repair
$5,600.00
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New Massey Ferguson Hydraulic Pump 519343m93
New Massey Ferguson Hydraulic Pump 519343m93
$450.00
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Deutz Hydraulic Pump Assembly 1176000 1 Year Warranty
Deutz Hydraulic Pump Assembly 1176000 1 Year Warranty
$600.00
Time Remaining: 17h 55m

Mitsubishi forklift hydraulic pump drive shaft AF17B11621
Mitsubishi forklift hydraulic pump drive shaft AF17B11621
$219.00
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International 404 hydraulic pump might fit others used
International 404 hydraulic pump might fit others used
$375.00
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MF  Ford Hydraulic Pump Repair Kit
MF Ford Hydraulic Pump Repair Kit
$109.50
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RE29107 New John Deere Hydraulic Pump Overhaul Repair Kit 2510 3010 40
RE29107 New John Deere Hydraulic Pump Overhaul Repair Kit 2510 3010 40
$50.00
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FORD 9N 2N 8N LOADER HYDRAULIC 6 SPLINE PUMP DRIVE SHAFT 194354
FORD 9N 2N 8N LOADER HYDRAULIC 6 SPLINE PUMP DRIVE SHAFT 194354
$25.95
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120114C91 IH Case IH International Hydraulic Power Steering Pump New 12 GPM
120114C91 IH Case IH International Hydraulic Power Steering Pump New 12 GPM
$180.00
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International 350 Tractor Original Distributor and Hydraulic Pump
International 350 Tractor Original Distributor and Hydraulic Pump
$100.00
Time Remaining: 23h 1m