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.

Belarus Tractor Hydraulic Power Steering Pump
Belarus Tractor Hydraulic Power Steering Pump
$160.00
Time Remaining: 33m

MF Hydraulic Pump Single Stage 2640 2675 2745 3650 3680 3038732M2
MF Hydraulic Pump Single Stage 2640 2675 2745 3650 3680 3038732M2
$725.00
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Ford Loader Hydraulic Pump Kit Fits 701 702 703 14GPM Pump W Bracket
Ford Loader Hydraulic Pump Kit Fits 701 702 703 14GPM Pump W Bracket
$465.00
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70270905 Hydraulic Pump Fits Allis Chalmers 6060 6070 6080
70270905 Hydraulic Pump Fits Allis Chalmers 6060 6070 6080
$1,173.21
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Hydraulic Pump International Cub 544017R91
Hydraulic Pump International Cub 544017R91
$249.00
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Hydraulic Pump Shaft New John Deere R79156
Hydraulic Pump Shaft New John Deere R79156
$89.46
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Hydraulic Pump Shaft New John Deere R79154
Hydraulic Pump Shaft New John Deere R79154
$91.45
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Hydraulic Pump New John Deere KP0588CSSS
Hydraulic Pump New John Deere KP0588CSSS
$475.00
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Hydraulic Pump John Deere 500 510 700 710D AL16963
Hydraulic Pump John Deere 500 510 700 710D AL16963
$550.00
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Hydraulic Pump New Allis Chalmers K962635
Hydraulic Pump New Allis Chalmers K962635
$372.44
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Hydraulic Pump New Fiat 5129481
Hydraulic Pump New Fiat 5129481
$110.69
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Hydraulic Pump Shaft New John Deere R79152
Hydraulic Pump Shaft New John Deere R79152
$115.53
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Hydraulic Pump Coupling
Hydraulic Pump Coupling
$100.00
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Hydraulic Pump Ford 3230 3420 3930 4130 4630 4830 5030 83987329
Hydraulic Pump Ford 3230 3420 3930 4130 4630 4830 5030 83987329
$526.68
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Hydraulic Pump Repair Kit Ford 2N 8N 9N 1101 5000
Hydraulic Pump Repair Kit Ford 2N 8N 9N 1101 5000
$109.00
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Hydraulic Pump Ford 5100 5200 7000 7100 7200 81826808
Hydraulic Pump Ford 5100 5200 7000 7100 7200 81826808
$579.48
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Hydraulic Pump Adapter Plate
Hydraulic Pump Adapter Plate
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Hydraulic Pump New Bolens Iseki Mitsubishi 187 4050
Hydraulic Pump New Bolens Iseki Mitsubishi 187 4050
$390.00
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Hydraulic Pump Drive Shaft Coupler New John Deere T22914
Hydraulic Pump Drive Shaft Coupler New John Deere T22914
$51.36
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Hydraulic Pump John Deere 900 AM875239
Hydraulic Pump John Deere 900 AM875239
$371.63
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Hydraulic Pump Kubota L1802 L2002 L2402 L275 38180 36100
Hydraulic Pump Kubota L1802 L2002 L2402 L275 38180 36100
$455.88
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Piston Type Hydraulic Pump New Ford NCA600F
Piston Type Hydraulic Pump New Ford NCA600F
$785.07
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Hydraulic Pump Ford 2N 9N 9N605A
Hydraulic Pump Ford 2N 9N 9N605A
$750.00
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Hydraulic Pump Oliver 77 88 770 880 Super 77 Super 88 1KSB2043B
Hydraulic Pump Oliver 77 88 770 880 Super 77 Super 88 1KSB2043B
$750.00
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Remanufactured Hydraulic Pump PTO
Remanufactured Hydraulic Pump PTO
$900.00
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Case IH Tractor Hydraulic Pump 120114C91 1086 1486 1568 1586 3088 3688 786 886
Case IH Tractor Hydraulic Pump 120114C91 1086 1486 1568 1586 3088 3688 786 886
$285.00
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Agco 051322S1 Hydraulic Pump Flange
Agco 051322S1 Hydraulic Pump Flange
$19.99
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Hydraulic Pump Case David Brown Tractors K916535
Hydraulic Pump Case David Brown Tractors K916535
$533.45
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R34362 New John Deere JD Hydraulic Pump Drive Coupler Half 1830 2130 2840 3020 +
R34362 New John Deere JD Hydraulic Pump Drive Coupler Half 1830 2130 2840 3020 +
$14.21
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Rebuilt New Gen John Deere 20 series Hydraulic Pump
Rebuilt New Gen John Deere 20 series Hydraulic Pump
$945.00
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Massey Ferguson 1250 Hydraulic Pump PN 3702112M91
Massey Ferguson 1250 Hydraulic Pump PN 3702112M91
$500.00
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John Deere 620 630 Hydraulic Pump F2732R
John Deere 620 630 Hydraulic Pump F2732R
$144.00
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HYDRAULIC PUMP For FORD 1210 used
HYDRAULIC PUMP For FORD 1210 used
$600.00
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K919048 New David Brown Tractor Hydraulic Pump 1200 1210 1212 Selectamatic
K919048 New David Brown Tractor Hydraulic Pump 1200 1210 1212 Selectamatic
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5179726 New Ford New Holland Hydraulic Pump 4835 5635 6635 7635 8160 8260 +
5179726 New Ford New Holland Hydraulic Pump 4835 5635 6635 7635 8160 8260 +
$131.01
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RE29103 New John Deere Hydraulic Pump Seal Kit 2520 3010 4000 4010 4020 4040 +
RE29103 New John Deere Hydraulic Pump Seal Kit 2520 3010 4000 4010 4020 4040 +
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Bearing Race Hydraulic Pump John Deere Tractor Backhoe Loader1640 1830 1840 2030
Bearing Race Hydraulic Pump John Deere Tractor Backhoe Loader1640 1830 1840 2030
$76.95
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AR47580 New John Deere Hydraulic Pump 4010 4020 4030 4040 4240 4430 4520 ++
AR47580 New John Deere Hydraulic Pump 4010 4020 4030 4040 4240 4430 4520 ++
$1,295.00
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Selective Control Valve Kit Hydraulic Pump John Deere Tractor 1040 1140 1520
Selective Control Valve Kit Hydraulic Pump John Deere Tractor 1040 1140 1520
$265.15
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MASSEY FERGUSON 135 150 165 175 180 HYDRAULIC PUMP PISTON 1860038m1 585
MASSEY FERGUSON 135 150 165 175 180 HYDRAULIC PUMP PISTON 1860038m1 585
$18.00
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AR101288 New John Deere Tractor Hydraulic Pump 310B 410 500C 640 670 740 740A
AR101288 New John Deere Tractor Hydraulic Pump 310B 410 500C 640 670 740 740A
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Case 1949302C1 Hydraulic Pump 13GPM 2250 PSI s22 4
Case 1949302C1 Hydraulic Pump 13GPM 2250 PSI s22 4
$212.49
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Selective Control Valve Kit Hydraulic Pump Breakaway Coupler Overhaul John Deere
Selective Control Valve Kit Hydraulic Pump Breakaway Coupler Overhaul John Deere
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5129478 New Ford Hydraulic P S Pump 580 640 680 780 4230 4430 TN55 TN65 TN70 +
5129478 New Ford Hydraulic P S Pump 580 640 680 780 4230 4430 TN55 TN65 TN70 +
$128.98
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Hydraulic Pump for Case 1246 TRACTOR 3146446R93
Hydraulic Pump for Case 1246 TRACTOR 3146446R93
$566.99
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Hydraulic Pump for Case 523 TRACTOR 3146446R93
Hydraulic Pump for Case 523 TRACTOR 3146446R93
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Hydraulic Pump for Case 654 TRACTOR 3146446R93
Hydraulic Pump for Case 654 TRACTOR 3146446R93
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Hydraulic Pump for Case 724 TRACTOR 3146446R93
Hydraulic Pump for Case 724 TRACTOR 3146446R93
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Hydraulic Pump for Case 624 TRACTOR 3146446R93
Hydraulic Pump for Case 624 TRACTOR 3146446R93
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Hydraulic Pump for Case 1046 TRACTOR 3146446R93
Hydraulic Pump for Case 1046 TRACTOR 3146446R93
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Hydraulic Pump for Case 824 TRACTOR 3146446R93
Hydraulic Pump for Case 824 TRACTOR 3146446R93
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9N622 New Ford Tractor 2N 8N 9N Hydraulic Pump Chambers Left
9N622 New Ford Tractor 2N 8N 9N Hydraulic Pump Chambers Left
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85700189 Ford Backhoe 340 A 340B 445 A 450 540A 540B Hydraulic Pump E7NN600CA +
85700189 Ford Backhoe 340 A 340B 445 A 450 540A 540B Hydraulic Pump E7NN600CA +
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120114C91 Case International Harvester Hydraulic Pump 1086 1486 1586 3088 +
120114C91 Case International Harvester Hydraulic Pump 1086 1486 1586 3088 +
$239.94
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5129486 Ford New Holland Hydraulic Pump 8160 8260 8360 TL100 TL70 TL80 TL90 TN65
5129486 Ford New Holland Hydraulic Pump 8160 8260 8360 TL100 TL70 TL80 TL90 TN65
$142.75
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TX11234 Long Tractor Hydraulic Pump 260C 310 310C 360 350 445 460 610 510 560 +
TX11234 Long Tractor Hydraulic Pump 260C 310 310C 360 350 445 460 610 510 560 +
$121.29
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C5NN851A Ford New Holland Tractor Hydraulic Pump Shaft Seal 1800 Series 2000 +
C5NN851A Ford New Holland Tractor Hydraulic Pump Shaft Seal 1800 Series 2000 +
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Hydraulic Pump Hub and Pin For Ford Equipment 112191
Hydraulic Pump Hub and Pin For Ford Equipment 112191
$50.00
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HYDRAULIC LIFT PUMP Massey Ferguson 35 50 65 202 231 253 302 TO35 FE35 F40 MH50
HYDRAULIC LIFT PUMP Massey Ferguson 35 50 65 202 231 253 302 TO35 FE35 F40 MH50
$424.00
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Case OEM 1949292C1 Hydraulic Pump s22 3
Case OEM 1949292C1 Hydraulic Pump s22 3
$318.75
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5129486 FORD Tractor Hydraulic Pump 5169039 5179728 4635 4835 8160 8260 TL80
5129486 FORD Tractor Hydraulic Pump 5169039 5179728 4635 4835 8160 8260 TL80
$179.99
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Hydraulic Pump Shaft John Deere Tractor 1640 2040 2040S 2140 3010 3020 4000 4010
Hydraulic Pump Shaft John Deere Tractor 1640 2040 2040S 2140 3010 3020 4000 4010
$112.55
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John Deere Hydraulic Pump Assembly AR103033 or AR103036
John Deere Hydraulic Pump Assembly AR103033 or AR103036
$900.00
Time Remaining: 21h 18m

Deutz Hydraulic Pump Assembly 1176000 1 Year Warranty
Deutz Hydraulic Pump Assembly 1176000 1 Year Warranty
$600.00
Time Remaining: 21h 18m

L78 13 HYDRAULIC PUMP DRIVE SHAFT FLANGE COUPLER 7 8 13 SPLINE 352 for FORD
L78 13 HYDRAULIC PUMP DRIVE SHAFT FLANGE COUPLER 7 8 13 SPLINE 352 for FORD
$30.50
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Ford Tractor Hydraulic Pump Repair Kit CCPN600AB
Ford Tractor Hydraulic Pump Repair Kit CCPN600AB
$45.00
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MASSEY FERGUSON INDUSTRIAL 20C 30B 30D HYDRAULIC PUMP DRIVE SHAFT 729563M91
MASSEY FERGUSON INDUSTRIAL 20C 30B 30D HYDRAULIC PUMP DRIVE SHAFT 729563M91
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MASSEY FERGUSON 35 50 65 135 235 245 202 HYDRAULIC PUMP DRIVE ADAPTER 704812M93
MASSEY FERGUSON 35 50 65 135 235 245 202 HYDRAULIC PUMP DRIVE ADAPTER 704812M93
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New Hydraulic Pump 1663627M92 Fits 30 165 175 180 235 240 245 250 1080 1085
New Hydraulic Pump 1663627M92 Fits 30 165 175 180 235 240 245 250 1080 1085
$299.99
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OLIVER WHITE 1655 2 70 HYDRAULIC TRANS LUBE PUMP DRIVE PINION 30 3055108 NOS
OLIVER WHITE 1655 2 70 HYDRAULIC TRANS LUBE PUMP DRIVE PINION 30 3055108 NOS
$19.99
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Vintage allis chalmers B C tractor hydraulic pump handle part AC hyd pump handle
Vintage allis chalmers B C tractor hydraulic pump handle part AC hyd pump handle
$5.99
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Ford Tractor 8N Hydraulic Pump Parts
Ford Tractor 8N Hydraulic Pump Parts
$6.00
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Hydraulic Pump Long TX11234 260C 310 310C 310DT 350 360 360C Aftermarket
Hydraulic Pump Long TX11234 260C 310 310C 310DT 350 360 360C Aftermarket
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New MASSEY FERGUSON135 Hydraulic Pump Lever Part  897516M91
New MASSEY FERGUSON135 Hydraulic Pump Lever Part 897516M91
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ESL12750 New Farmtrac Tractor Hydraulic Pump 80 675 8075
ESL12750 New Farmtrac Tractor Hydraulic Pump 80 675 8075
$749.73
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VAC CASE HYDRAULIC PUMP
VAC CASE HYDRAULIC PUMP
$150.00
Time Remaining: 1d 12h 45m