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.

John deere 7775 Hydraulic Front piston pump
John deere 7775 Hydraulic Front piston pump
$875.00
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3281125M91 Massey Ferguson Hydraulic Pump 205 205 4 ++
3281125M91 Massey Ferguson Hydraulic Pump 205 205 4 ++
$276.47
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NEW Hydraulic Pump for Ford New Holland 8160 8260 8360 TL70 TL80TL90 TL100
NEW Hydraulic Pump for Ford New Holland 8160 8260 8360 TL70 TL80TL90 TL100
$161.47
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NEW Hydraulic Pump for Ford New Holland TN70DA TN70F TN70S TN70SA TN75TN75A
NEW Hydraulic Pump for Ford New Holland TN70DA TN70F TN70S TN70SA TN75TN75A
$161.47
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WHITE OLIVER MPL MOLINE TRACTOR HYDRAULIC PUMP JET STAR 3 JET STAR 4 A 207001354
WHITE OLIVER MPL MOLINE TRACTOR HYDRAULIC PUMP JET STAR 3 JET STAR 4 A 207001354
$899.00
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NEW Hydraulic Pump for Ford New Holland TN85FA TN90F TN95F TN95FATN75FA
NEW Hydraulic Pump for Ford New Holland TN85FA TN90F TN95F TN95FATN75FA
$161.47
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WHITE OLIVER MPL MOLINE TRACTOR HYDRAULIC PUMP SUPER 55 550 A 72163355
WHITE OLIVER MPL MOLINE TRACTOR HYDRAULIC PUMP SUPER 55 550 A 72163355
$1,259.00
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FIAT WHITE TRACTOR HYDRAULIC PUMP TK85 1180 3010S 566 980 700 TK76 A 5129488
FIAT WHITE TRACTOR HYDRAULIC PUMP TK85 1180 3010S 566 980 700 TK76 A 5129488
$255.00
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HYDRAULIC PUMP JOHN DEERE 4000 4020 4040 4230 4240 4320 4430 4440 4520
HYDRAULIC PUMP JOHN DEERE 4000 4020 4040 4230 4240 4320 4430 4440 4520
$957.60
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FIAT WHITE TRACTOR HYDRAULIC PUMP TK76 1180 1370 566 3830 7530 1370 A 5129483
FIAT WHITE TRACTOR HYDRAULIC PUMP TK76 1180 1370 566 3830 7530 1370 A 5129483
$195.00
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WHITE OLIVER MPL MOLINE TRACTOR HYDRAULIC PUMP 1365 1370 A 5121276
WHITE OLIVER MPL MOLINE TRACTOR HYDRAULIC PUMP 1365 1370 A 5121276
$139.00
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WHITE TRACTOR MAIN HYDRAULIC GEAR PUMP 1600 1650 1750 1800 1850 1950 A 303062449
WHITE TRACTOR MAIN HYDRAULIC GEAR PUMP 1600 1650 1750 1800 1850 1950 A 303062449
$675.00
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FORD NAA 600 800 601 801 2000 4000 HYDRAULIC HYD PUMP NEEDLE BEARING NCA881A
FORD NAA 600 800 601 801 2000 4000 HYDRAULIC HYD PUMP NEEDLE BEARING NCA881A
$10.99
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3600 ford tractor diesel hydraulic pump 2600 2610 3610 2310 made in England
3600 ford tractor diesel hydraulic pump 2600 2610 3610 2310 made in England
$315.00
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CASE IH TRACTOR HYDRAULIC PUMP 2300A 2424 2444 B275 354 364 424 444 A 704330R95
CASE IH TRACTOR HYDRAULIC PUMP 2300A 2424 2444 B275 354 364 424 444 A 704330R95
$275.00
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Hydraulic Pump John Deere Tractor 4000 4020 4040 4230 4240 4320 4430 4440 4520
Hydraulic Pump John Deere Tractor 4000 4020 4040 4230 4240 4320 4430 4440 4520
$1,542.55
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CASE IH TRACTOR HYDRAULIC PUMP C SUPER AV 100 130 140 200 230 A 384506R94
CASE IH TRACTOR HYDRAULIC PUMP C SUPER AV 100 130 140 200 230 A 384506R94
$589.00
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CASE IH TRACTOR HYDRAULIC PUMP CUB 154 LO BOY CUB 184 CUB 185 LO BOY A 544017R91
CASE IH TRACTOR HYDRAULIC PUMP CUB 154 LO BOY CUB 184 CUB 185 LO BOY A 544017R91
$250.00
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CASE IH TRACTOR HYDRAULIC GEAR PUMP 248 380B C50 2400 258 385 4230 A 93835C92
CASE IH TRACTOR HYDRAULIC GEAR PUMP 248 380B C50 2400 258 385 4230 A 93835C92
$480.00
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Hydraulic Pump Shaft John Deere Tractor 1640 1830 1840 2030 2040 2040S 2130 2140
Hydraulic Pump Shaft John Deere Tractor 1640 1830 1840 2030 2040 2040S 2130 2140
$115.95
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CASE IH TRACTOR HYDRAULIC PUMP 480C 580C 580F A D53690
CASE IH TRACTOR HYDRAULIC PUMP 480C 580C 580F A D53690
$399.00
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CASE IH TRACTOR HYDRAULIC PUMP 433 533 633 644 743 745 833 844S A 3147535R93
CASE IH TRACTOR HYDRAULIC PUMP 433 533 633 644 743 745 833 844S A 3147535R93
$630.00
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CASE IH TRACTOR HYDRAULIC PUMP 18GPM 2400 2500 454 574 A 544708R92
CASE IH TRACTOR HYDRAULIC PUMP 18GPM 2400 2500 454 574 A 544708R92
$899.00
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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
$125.00
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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
$128.00
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CASE IH TRACTOR HYDRAULIC PUMP 9 GPM 1026 1256 1468 1566 766 826 A 527397R93
CASE IH TRACTOR HYDRAULIC PUMP 9 GPM 1026 1256 1468 1566 766 826 A 527397R93
$370.00
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John Deere hydraulic pump fits motor size 4045 and 6068
John Deere hydraulic pump fits motor size 4045 and 6068
$500.00
Time Remaining: 5h 13m

NEW Hydraulic Pump part no AR94661 fits John Deere 4020 4440 and lots more
NEW Hydraulic Pump part no AR94661 fits John Deere 4020 4440 and lots more
$974.95
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Hydraulic Pump Kit Valve Sleeve John Deere Tractor 1830 2030 2130 2350 2440 2510
Hydraulic Pump Kit Valve Sleeve John Deere Tractor 1830 2030 2130 2350 2440 2510
$41.67
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MASSEY FERGUSON 50 NEW HYDRAULIC PUMP OUTLET VALVES 180 930M1
MASSEY FERGUSON 50 NEW HYDRAULIC PUMP OUTLET VALVES 180 930M1
$14.95
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81802077 Ford New Holland 2910 3930 250C 340A Hydraulic Pump Drive Gear C5NN866B
81802077 Ford New Holland 2910 3930 250C 340A Hydraulic Pump Drive Gear C5NN866B
$118.00
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CASE IH TRACTOR HYDRAULIC PUMP 12 GPM MCV 1086 1586 3688 786 986 A 120114C91
CASE IH TRACTOR HYDRAULIC PUMP 12 GPM MCV 1086 1586 3688 786 986 A 120114C91
$420.00
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CASE IH TRACTOR HYDRAULIC PUMP 12 GPM MCV ECON 1086 3688 786 986 A 120114C91 E
CASE IH TRACTOR HYDRAULIC PUMP 12 GPM MCV ECON 1086 3688 786 986 A 120114C91 E
$260.00
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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 +
$65.00
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Ford 9N Hydraulic Pump Relief Valve  Spring Nice Shape Vintage Original
Ford 9N Hydraulic Pump Relief Valve Spring Nice Shape Vintage Original
$20.00
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CASE IH NEW DUAL HYDRAULIC PUMP 3063911R93 384 w POWER STEERING
CASE IH NEW DUAL HYDRAULIC PUMP 3063911R93 384 w POWER STEERING
$679.98
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Ford 2N 8N 9N Hydraulic Pump Repair Kit
Ford 2N 8N 9N Hydraulic Pump Repair Kit
$112.95
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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
$695.56
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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
$437.28
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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 +
$350.00
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IH International Farmall H SN 267057 and Below Hydraulic Pump Cover 5018EC
IH International Farmall H SN 267057 and Below Hydraulic Pump Cover 5018EC
$29.99
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IH International Farmall H SN 267057 Below Hydraulic Pump Backplate with Pin
IH International Farmall H SN 267057 Below Hydraulic Pump Backplate with Pin
$34.99
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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
$29.99
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FORD 5000 HYDRAULIC PUMP END PLATE
FORD 5000 HYDRAULIC PUMP END PLATE
$9.99
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FORD 5000 HYDRAULIC PUMP COVER PLATE D0NNN610A PART  FOR REFERENCE ONLY
FORD 5000 HYDRAULIC PUMP COVER PLATE D0NNN610A PART FOR REFERENCE ONLY
$12.99
Time Remaining: 22h 40m

70270905 Allis Chalmers Pump Hydraulic 6060 6070 6080
70270905 Allis Chalmers Pump Hydraulic 6060 6070 6080
$850.00
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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 +
$113.99
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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
$160.62
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CASE IH TRACTOR HYDRAULIC PUMP SUPER H 300 350 GAS ONLY A 128191C91
CASE IH TRACTOR HYDRAULIC PUMP SUPER H 300 350 GAS ONLY A 128191C91
$879.00
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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
$259.95
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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
$259.95
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CASE IH TRACTOR HYDRAULIC PUMP M SUPER MTA W9 400 450 GAS ONLY A 128190C91
CASE IH TRACTOR HYDRAULIC PUMP M SUPER MTA W9 400 450 GAS ONLY A 128190C91
$889.00
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Universal Tractor Main Hydraulic Pump A42 L PRD2217S
Universal Tractor Main Hydraulic Pump A42 L PRD2217S
$285.00
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CASE IH TRACTOR HYDRAULIC PUMP 440 840 523 644 724 743 844S 845 940 A 3145248R93
CASE IH TRACTOR HYDRAULIC PUMP 440 840 523 644 724 743 844S 845 940 A 3145248R93
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David Brown K962635 Main Hydraulic Pump 880 990 1190
David Brown K962635 Main Hydraulic Pump 880 990 1190
$428.00
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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
$360.24
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CASE IH TRACTOR HYDRAULIC PUMP A 3146446R93
CASE IH TRACTOR HYDRAULIC PUMP A 3146446R93
$599.00
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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
$414.26
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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
$460.46
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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
$429.66
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Ferguson Ford Hydraulic Pump Repair Kit TE20 TEA20 TEF20 TO20TO30 2N 8N 9N
Ferguson Ford Hydraulic Pump Repair Kit TE20 TEA20 TEF20 TO20TO30 2N 8N 9N
$485.00
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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 +
$135.44
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5023EA 5023EB IH FARMALL H BELLY PUMP CONTROL ARM LEVER HYDRAULICS
5023EA 5023EB IH FARMALL H BELLY PUMP CONTROL ARM LEVER HYDRAULICS
$35.00
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hydraulic pump
hydraulic pump
$50.00
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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
$537.46
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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
$311.88
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K919048 David Brown NEW Hydraulic Pump 1200 Selectamatic Tractor 1210 1212
K919048 David Brown NEW Hydraulic Pump 1200 Selectamatic Tractor 1210 1212
$169.00
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NEW Hydraulic Pump for John Deere Tractor AR103033
NEW Hydraulic Pump for John Deere Tractor AR103033
$889.95
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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 +
$93.99
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FORD HYDRAULIC PUMP DRIVE GEAR 83910769 D6NN866B C7NN866B TW10 TW15 TW20 8000
FORD HYDRAULIC PUMP DRIVE GEAR 83910769 D6NN866B C7NN866B TW10 TW15 TW20 8000
$208.50
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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 ++
$792.48
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FARMALL H M TRACTOR DIPSTICK FOR HYDRAULIC BELLY PUMP
FARMALL H M TRACTOR DIPSTICK FOR HYDRAULIC BELLY PUMP
$40.00
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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
$419.98
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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
$419.95
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