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 5610S 5640 6610S 6640 7740 7840 8240 F0NN600BB
Ford New Holland Hydraulic Pump 5610S 5640 6610S 6640 7740 7840 8240 F0NN600BB
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70933 NEW MAIN HITCH HYDRAULIC PUMP 1949296C1 70933C91 70931C91 FOR 1466 3688 +
70933 NEW MAIN HITCH HYDRAULIC PUMP 1949296C1 70933C91 70931C91 FOR 1466 3688 +
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70270905 Allis Chalmers Pump Hydraulic 6060 6070 6080
70270905 Allis Chalmers Pump Hydraulic 6060 6070 6080
$998.00
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704997M92 New Massey Ferguson Hydraulic Pump Drive Shaft 135 35 20 202 203 204 +
704997M92 New Massey Ferguson Hydraulic Pump Drive Shaft 135 35 20 202 203 204 +
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5179726 New Holland Hydraulic Pump 5635 7635 8160 8260 8360 TL70 TL80 TL90 TL100
5179726 New Holland Hydraulic Pump 5635 7635 8160 8260 8360 TL70 TL80 TL90 TL100
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Reman Hydraulic Pump 1949294C1 New
Reman Hydraulic Pump 1949294C1 New
$1,120.00
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POWER STEERING HYDRAULIC PUMP CW Massey Ferguson MF 184 4 274 4 294 4 18L min
POWER STEERING HYDRAULIC PUMP CW Massey Ferguson MF 184 4 274 4 294 4 18L min
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POWER STEERING HYDRAULIC PUMP CW White Oliver 1355 1365 1370 2 60 18L min NEW
POWER STEERING HYDRAULIC PUMP CW White Oliver 1355 1365 1370 2 60 18L min NEW
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Universal Tractor Main Hydraulic Pump A42 L PRD2217S
Universal Tractor Main Hydraulic Pump A42 L PRD2217S
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David Brown K962635 Main Hydraulic Pump 880 990 1190
David Brown K962635 Main Hydraulic Pump 880 990 1190
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K962635 Hydraulic Pump Case David Brown Tractors 770 1190 1194 1290 1294
K962635 Hydraulic Pump Case David Brown Tractors 770 1190 1194 1290 1294
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AR98993 John Deere Hydraulic Pump Seal Kit 1020 1640 1750 2120 3120 RE228042
AR98993 John Deere Hydraulic Pump Seal Kit 1020 1640 1750 2120 3120 RE228042
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NEW Hydraulic Pump for Ford New Holland Tractor 5610 5610S 5900 6610 6610O
NEW Hydraulic Pump for Ford New Holland Tractor 5610 5610S 5900 6610 6610O
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NEW Hydraulic Pump for Ford New Holland Tractor 3900 Others 83936586
NEW Hydraulic Pump for Ford New Holland Tractor 3900 Others 83936586
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NEW Hydraulic Pump for Ford New Holland Tractor 5000 Others D0NN600G
NEW Hydraulic Pump for Ford New Holland Tractor 5000 Others D0NN600G
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Ferguson Ford Hydraulic Pump Repair Kit TE20 TEA20 TEF20 TO20TO30 2N 8N 9N
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David Brown 990 Hydraulic Pump
David Brown 990 Hydraulic Pump
$75.00
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1680061V91 Massey Ferguson Hydraulic Pump Valve 235 245 255 265 275 282 285 +
1680061V91 Massey Ferguson Hydraulic Pump Valve 235 245 255 265 275 282 285 +
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5023EA 5023EB IH FARMALL H BELLY PUMP CONTROL ARM LEVER HYDRAULICS
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John Deere Hydraulic Pump Parts Kit AR98993 NSN 4320 00 008 1738 NEW B2614
John Deere Hydraulic Pump Parts Kit AR98993 NSN 4320 00 008 1738 NEW B2614
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81826808 New Ford Hydraulic Pump 5000 5100 5200 7000 7200 w Dual Power D2NN600B
81826808 New Ford Hydraulic Pump 5000 5100 5200 7000 7200 w Dual Power D2NN600B
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FORD 9N 2N 8N FERGUSON TO20 TO30 HYDRAULIC PUMP VALVE CHAMBER REPAIR KIT VCK01
FORD 9N 2N 8N FERGUSON TO20 TO30 HYDRAULIC PUMP VALVE CHAMBER REPAIR KIT VCK01
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NEW Hydraulic Pump for Ford New Holland Tractor 5640 6610S 6640 6640O 6810S
NEW Hydraulic Pump for Ford New Holland Tractor 5640 6610S 6640 6640O 6810S
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3 4 Hydraulic Pump Drive Flange 112104
3 4 Hydraulic Pump Drive Flange 112104
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John Deere Hydraulic Pump Seal Kit AR98993
John Deere Hydraulic Pump Seal Kit AR98993
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Allis Chalmers Hydraulic Pump Assembly 72098141 Fits 5020 5030
Allis Chalmers Hydraulic Pump Assembly 72098141 Fits 5020 5030
$365.00
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Hydraulic Pump Drive Hub
Hydraulic Pump Drive Hub
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Hydraulic Pump Drive Shaft  Ford 2N 8N 9N 190760
Hydraulic Pump Drive Shaft Ford 2N 8N 9N 190760
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405181 NEW MCV HYDRAULIC PUMP DRIVE GEAR 405181R1 FOR 756 766 786 826 856 886 +
405181 NEW MCV HYDRAULIC PUMP DRIVE GEAR 405181R1 FOR 756 766 786 826 856 886 +
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Gear Hydraulic Pump Drive for Case 706 TRACTOR 382332R1
Gear Hydraulic Pump Drive for Case 706 TRACTOR 382332R1
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L827 10X LB New Ford Front Loader Hydraulic Pump 2N 600 700 900 Massey Ferguson
L827 10X LB New Ford Front Loader Hydraulic Pump 2N 600 700 900 Massey Ferguson
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Ford Hydraulic Pump Safety Valve E1ADDN984
Ford Hydraulic Pump Safety Valve E1ADDN984
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NEW Hydraulic Pump for John Deere Tractor AR103033
NEW Hydraulic Pump for John Deere Tractor AR103033
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R79154 New John Deere Tractor Hydraulic Pump Shaft 4000 4020 4040 4230 4240 +
R79154 New John Deere Tractor Hydraulic Pump Shaft 4000 4020 4040 4230 4240 +
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Hydraulic Pump for John Deere Tractors
Hydraulic Pump for John Deere Tractors
$850.00
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FORD HYDRAULIC PUMP DRIVE GEAR 83910769 D6NN866B C7NN866B TW10 TW15 TW20 8000
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1176451 New Deutz Tractor Tandem Hydraulic Pump 7110 7120 DX90 DX630 DX650 ++
1176451 New Deutz Tractor Tandem Hydraulic Pump 7110 7120 DX90 DX630 DX650 ++
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HYDRAULIC LIFT PUMP ASSEMBLY MASSEY FERGUSON TRACTOR 135 150 165 175 185 235 245
HYDRAULIC LIFT PUMP ASSEMBLY MASSEY FERGUSON TRACTOR 135 150 165 175 185 235 245
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HYDRAULIC LIFT PUMP MASSEY FERGUSON TRACTOR TO35 35 50 65 231 253 204 205 NEW
HYDRAULIC LIFT PUMP MASSEY FERGUSON TRACTOR TO35 35 50 65 231 253 204 205 NEW
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TX17203 New Long Tractor Hydraulic Pump TK76 JX55 85 85M 100 90 110 90 466 566 +
TX17203 New Long Tractor Hydraulic Pump TK76 JX55 85 85M 100 90 110 90 466 566 +
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Hydraulic Pump Ford 6610 7610 83996272 550131600E1NN600AB83996272E1NN600AB
Hydraulic Pump Ford 6610 7610 83996272 550131600E1NN600AB83996272E1NN600AB
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John Deere Tandem Hydraulic Pump AR55346
John Deere Tandem Hydraulic Pump AR55346
$499.00
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Ford Hydraulic Pump Assembly DONN600F 1 Year Warranty
Ford Hydraulic Pump Assembly DONN600F 1 Year Warranty
$445.00
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New MF Hydraulic Lift Pump 184473m93 1 Year Warranty
New MF Hydraulic Lift Pump 184473m93 1 Year Warranty
$395.00
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W248085B rear housing for White Planter Hydraulic Pump
W248085B rear housing for White Planter Hydraulic Pump
$128.00
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W248421B internal pump for White Planter Hydraulic Pump assembly
W248421B internal pump for White Planter Hydraulic Pump assembly
$395.00
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W248084B front housing for White Planter Hydraulic Pump
W248084B front housing for White Planter Hydraulic Pump
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W248420B relief valve for internal pump on White Planter Hydraulic Pump
W248420B relief valve for internal pump on White Planter Hydraulic Pump
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Hydraulic Pump O Ring Seal Kit John Deere Tractor 1020 1030 1040 1120
Hydraulic Pump O Ring Seal Kit John Deere Tractor 1020 1030 1040 1120
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Drive Coupler Shaft Hydraulic Pump John Deere Tractor Backhoe 1020 1030 1120 401
Drive Coupler Shaft Hydraulic Pump John Deere Tractor Backhoe 1020 1030 1120 401
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Hydraulic Pump John Deere Tractor 1020 1030 1120 1130 1520 1530 1630 1640 1830
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Drive Coupler Shaft Hydraulic Pump John Deere Tractor 1640 2140 2155 2350 2355
Drive Coupler Shaft Hydraulic Pump John Deere Tractor 1640 2140 2155 2350 2355
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Hydraulic Pump Shaft John Deere Tractor 4000 4020 4040 4230 4240 4320 4430 4440
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$114.95
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Hydraulic Pump Repair Kit
Hydraulic Pump Repair Kit
$8.00
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P 704330R95 Hydraulic Pump IH Farmall B275 B414 424 354 364 384 2424 and more
P 704330R95 Hydraulic Pump IH Farmall B275 B414 424 354 364 384 2424 and more
$271.50
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New Massey Ferguson Hydraulic Pump 1684582m92
New Massey Ferguson Hydraulic Pump 1684582m92
$646.80
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1081639M91 Massey Ferguson HYDRAULIC PUMP 35 65 135 150 165 175 178 513592M91
1081639M91 Massey Ferguson HYDRAULIC PUMP 35 65 135 150 165 175 178 513592M91
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NEW Hydraulic Pump Strainer for Massey Ferguson Tractor 282 283 UK 285
NEW Hydraulic Pump Strainer for Massey Ferguson Tractor 282 283 UK 285
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MASSEY FERGUSON HYDRAULIC PUMP NEEDLE BEARING1000251M1
MASSEY FERGUSON HYDRAULIC PUMP NEEDLE BEARING1000251M1
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R34359 John Deere Hydraulic Pump Drive Coupler 3020 +
R34359 John Deere Hydraulic Pump Drive Coupler 3020 +
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Hydraulic Pump IH FARMALL Allis John Deere Ford Case
Hydraulic Pump IH FARMALL Allis John Deere Ford Case
$200.00
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Ford TLB HYD pump A D8NN600AA Hydraulic pump for 445540545A 550 555 4500
Ford TLB HYD pump A D8NN600AA Hydraulic pump for 445540545A 550 555 4500
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KAMA JINMA CHINESE TRACTOR HYDRAULIC POWER STEERING PUMP HLCB D06 R
KAMA JINMA CHINESE TRACTOR HYDRAULIC POWER STEERING PUMP HLCB D06 R
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NEW Hydraulic Lift Pump Massey Ferguson Tractor 35 50 65 TO35 253
NEW Hydraulic Lift Pump Massey Ferguson Tractor 35 50 65 TO35 253
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NEW Hydraulic Pump Massey Ferguson Tractor 362 365 Others 3701159M91
NEW Hydraulic Pump Massey Ferguson Tractor 362 365 Others 3701159M91
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NEW Hydraulic pump filter for Massey Ferguson Tractor 3771122M92 3700504M91
NEW Hydraulic pump filter for Massey Ferguson Tractor 3771122M92 3700504M91
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3614362M93 New Massey Ferguson Hydraulic Pump 360 362 365 375 390 390T 393 396 +
3614362M93 New Massey Ferguson Hydraulic Pump 360 362 365 375 390 390T 393 396 +
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Minneapolis Moline Hydraulic Pump M5 M602 M670 5 Star Jet Star 3
Minneapolis Moline Hydraulic Pump M5 M602 M670 5 Star Jet Star 3
$75.00 (1 Bid)
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1687042M91 Massey Ferguson 135150165175175UK Hydraulic Pump Filter Strainer
1687042M91 Massey Ferguson 135150165175175UK Hydraulic Pump Filter Strainer
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NEW Hydraulic Pump Valve for Massey Ferguson Tractor 30 40 Others 1680061V91
NEW Hydraulic Pump Valve for Massey Ferguson Tractor 30 40 Others 1680061V91
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NEW Hydraulic Pump for Massey Ferguson 886821M94 12 Spline Shaft
NEW Hydraulic Pump for Massey Ferguson 886821M94 12 Spline Shaft
$225.30
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C5NN851A Ford NH NAA60070080090020004000 Hydraulic Pump Shaft Oil Seal
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NEW Hydraulic Lift Pump for Massey Ferguson Tractor 135 Others 1684582M92
NEW Hydraulic Lift Pump for Massey Ferguson Tractor 135 Others 1684582M92
$429.66
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MASSEY FERGUSON TO35 MF35 MF50 65 135 165 HYDRAULIC PUMP PISTON 190799M1 584
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NEW Hydraulic Pump for John Deere Tractor 1020 1040 1120 1130 1140 1350 1520
NEW Hydraulic Pump for John Deere Tractor 1020 1040 1120 1130 1140 1350 1520
$650.00
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NEW Hydraulic Pump for John Deere Tractor 4755 4760 4850 4955 4960 8430
NEW Hydraulic Pump for John Deere Tractor 4755 4760 4850 4955 4960 8430
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