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.

Allis Chalmers Repair Kit Hydraulic Pump 170 175 185
Allis Chalmers Repair Kit Hydraulic Pump 170 175 185
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Rebuilt John Deere 2520 3020 4020 Hydraulic Pump
Rebuilt John Deere 2520 3020 4020 Hydraulic Pump
$1,050.00
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Oliver 1755 1855 1955 2255 Hydraulic Pump Shield Cover
Oliver 1755 1855 1955 2255 Hydraulic Pump Shield Cover
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NEW HYDRAULIC PUMP CASE INTERNATIONAL 354 384 424 2424
NEW HYDRAULIC PUMP CASE INTERNATIONAL 354 384 424 2424
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Vintage farmall H tractor hydraulic pump coupler drive part IH belly pump drive
Vintage farmall H tractor hydraulic pump coupler drive part IH belly pump drive
$8.00
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Massey Ferguson Hydraulic Pump 184473M93 35 50 650 202 203 204 205 231
Massey Ferguson Hydraulic Pump 184473M93 35 50 650 202 203 204 205 231
$385.00
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3281125M91 Massey Ferguson Tractor Hydraulic Pump 205 205 4 Hinomoto E14 E16 E18
3281125M91 Massey Ferguson Tractor Hydraulic Pump 205 205 4 Hinomoto E14 E16 E18
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Massey Ferguson Hydraulic Pump Assembly 3614362M93
Massey Ferguson Hydraulic Pump Assembly 3614362M93
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Oliver White Hydraulic Pump Assembly 5121276
Oliver White Hydraulic Pump Assembly 5121276
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Case IH Hydraulic Pump Assembly 5179726
Case IH Hydraulic Pump Assembly 5179726
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CCPN600A Ford New Holland Hydraulic Pump Repair Kit NAA 600 800 601 801 2000 +
CCPN600A Ford New Holland Hydraulic Pump Repair Kit NAA 600 800 601 801 2000 +
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5121276 White Oliver Mpl Moline Hydraulic Pump 1365
5121276 White Oliver Mpl Moline Hydraulic Pump 1365
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Allis Chalmers Hydraulic Pump Assembly 70270905
Allis Chalmers Hydraulic Pump Assembly 70270905
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734628M1 New Massey Ferguson Hydraulic Pump Drive Pulley 135 150 230 235 TO35 +
734628M1 New Massey Ferguson Hydraulic Pump Drive Pulley 135 150 230 235 TO35 +
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New Gleaner Combine Hydraulic Pump w Power Steering Belt 71131774
New Gleaner Combine Hydraulic Pump w Power Steering Belt 71131774
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Hydraulic Pump Kit 8N 9N 2N ford HPOK1
Hydraulic Pump Kit 8N 9N 2N ford HPOK1
$110.00
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New Gleaner Combine Hydraulic Pump w o Power Steering Belt 71142239
New Gleaner Combine Hydraulic Pump w o Power Steering Belt 71142239
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Ford 3000 hydraulic pump
Ford 3000 hydraulic pump
$275.00
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FORD TRACTOR HYDRAULIC PUMP DRIVE SHAFT 292222 used on loader model 730
FORD TRACTOR HYDRAULIC PUMP DRIVE SHAFT 292222 used on loader model 730
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70263552 Hydraulic Pump Fits Allis Chalmers 6060 6080
70263552 Hydraulic Pump Fits Allis Chalmers 6060 6080
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OEM Hydraulic Pump for Ford New Holland Equipment E7NN600AA
OEM Hydraulic Pump for Ford New Holland Equipment E7NN600AA
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New Gleaner Combine Hydraulic Pump w Power Steering Belt 71146713
New Gleaner Combine Hydraulic Pump w Power Steering Belt 71146713
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Hydraulic Pump fits various Ford New Holland Loader 250C 260C 345C 345D 655 655A
Hydraulic Pump fits various Ford New Holland Loader 250C 260C 345C 345D 655 655A
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Massey Ferguson Auxiliary Hydraulic Pump 175 165 135 180 230 240 245 275 690 +
Massey Ferguson Auxiliary Hydraulic Pump 175 165 135 180 230 240 245 275 690 +
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Ford 900 SOS hydraulic pump
Ford 900 SOS hydraulic pump
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9N621 New Ford Tractor 2N 8N 9N Hydraulic Pump Chambers Right
9N621 New Ford Tractor 2N 8N 9N Hydraulic Pump Chambers Right
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2750128M91 New Massey Ferguson Front Mount Hydraulic Pump 30 32 40 54 212 225 ++
2750128M91 New Massey Ferguson Front Mount Hydraulic Pump 30 32 40 54 212 225 ++
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24D002 HYDRAULIC PUMP REPAIR KIT Fits Allis Chalmers 170 175 180 185
24D002 HYDRAULIC PUMP REPAIR KIT Fits Allis Chalmers 170 175 180 185
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Case IH Hydraulic Pump Assembly 128191C91
Case IH Hydraulic Pump Assembly 128191C91
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Allis Chalmers Hydraulic Pump Assembly 70257005
Allis Chalmers Hydraulic Pump Assembly 70257005
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R39319 John Deere Hydraulic Pump Cam Shaft 1020 1030 1040 1120 1130 1140 1350 +
R39319 John Deere Hydraulic Pump Cam Shaft 1020 1030 1040 1120 1130 1140 1350 +
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D5NN600C E Hydraulic Economy Pump Fits Ford NH 9700
D5NN600C E Hydraulic Economy Pump Fits Ford NH 9700
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CCPN600A New Ford Hydraulic Pump Repair Kit 500 600 700 800 900 2000 4000 NAA +
CCPN600A New Ford Hydraulic Pump Repair Kit 500 600 700 800 900 2000 4000 NAA +
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Hanix Diesel Kiki Bosch Hydraulic Pump for Tractor
Hanix Diesel Kiki Bosch Hydraulic Pump for Tractor
$690.00
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Hanix Xexel Hydraulic Pump for Tractor
Hanix Xexel Hydraulic Pump for Tractor
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Ford New Holland Hydraulic Pump 2310 2600 2610 3600 3610 5610 6610 7610 7710 +
Ford New Holland Hydraulic Pump 2310 2600 2610 3600 3610 5610 6610 7610 7710 +
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New Gleaner Combine Hydraulic Pump Belt 71146714
New Gleaner Combine Hydraulic Pump Belt 71146714
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New Gleaner Combine Hydraulic Pump w o Power Steering Belt 71152615
New Gleaner Combine Hydraulic Pump w o Power Steering Belt 71152615
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New Gleaner Combine Hydraulic Pump Belt 71300400
New Gleaner Combine Hydraulic Pump Belt 71300400
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Long Tractor New Hydraulic Pump 260C 310 310C 350 360 360C 445 460 510 560 610 +
Long Tractor New Hydraulic Pump 260C 310 310C 350 360 360C 445 460 510 560 610 +
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New MF Hydraulic Front Pump 2750128m91 1075358M1
New MF Hydraulic Front Pump 2750128m91 1075358M1
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john deere hydraulic pump danfoss AMT1165
john deere hydraulic pump danfoss AMT1165
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FORD 2600 3600 3610 5610 7610 7710 TRACTOR ENGINE HYDRAULIC PUMP E1NN600AA
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New 1672251M92 Massey Ferguson Hydraulic Lift Pump 165 175 230 250 265 670 699 +
New 1672251M92 Massey Ferguson Hydraulic Lift Pump 165 175 230 250 265 670 699 +
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A 1176452 Hydraulic Pump for various Allis Chalmers 6240 6250 6260 Deutz Tractor
A 1176452 Hydraulic Pump for various Allis Chalmers 6240 6250 6260 Deutz Tractor
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Ford Diesel Tractor 801  HYDRAULIC LOADER PUMP
Ford Diesel Tractor 801 HYDRAULIC LOADER PUMP
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FORD TRACTOR 730 735 LOADER HYDRAULIC PUMP DRIVE SHAFT 291951
FORD TRACTOR 730 735 LOADER HYDRAULIC PUMP DRIVE SHAFT 291951
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FORD HYDRAULIC PUMP VALVE CHAMBER WITH VALVES R H 9N621 2N 8N 9N
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FORD HYDRAULIC PUMP VALVE CHAMBER 9N622 WITH VALVES L H 2N 8N 9N
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HYDRAULIC PUMP GASKET FOR FORD TRACTOR
HYDRAULIC PUMP GASKET FOR FORD TRACTOR
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FERGUSON FORD HYDRAULIC PUMP REBUILD KIT 886404M2 HPOK1 2N 8N 9N TE20 TEA20 TO30
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Bare co Hydraulic pumpB12253539857M91
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Hydraulic Pump Chamber Repair Kit for Massey Ferguson TE20 TO20
Hydraulic Pump Chamber Repair Kit for Massey Ferguson TE20 TO20
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9N621KIT Hydraulic Pump Chamber Repair Kit for Ford 9N 2N 8N Tractors
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Hy Capacity HM180925 Hydraulic Pump Rear Camblock
Hy Capacity HM180925 Hydraulic Pump Rear Camblock
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MASSEY FERGUSON FIAT HYDRAULIC POWER STEERING PUMP A18X 1825210M91 3539858M91
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Kubota L3010 Hydraulic Pump PN TA220 36400
Kubota L3010 Hydraulic Pump PN TA220 36400
$595.00
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NEW Hydraulic Pump Strainer for Massey Ferguson Tractor 30 30B 30D 30E 35 360
NEW Hydraulic Pump Strainer for Massey Ferguson Tractor 30 30B 30D 30E 35 360
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NEW Hydraulic Pump Massey Ferguson Tractor 50E
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NEW Hydraulic Pump for Massey Ferguson Tractor 251XE 253 255 263 265 270
NEW Hydraulic Pump for Massey Ferguson Tractor 251XE 253 255 263 265 270
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NEW Hydraulic Lift Pump for Massey Ferguson Tractor 235 245 30 40
NEW Hydraulic Lift Pump for Massey Ferguson Tractor 235 245 30 40
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NEW Hydraulic Pump Massey Ferguson Tractor 375 390 390T 393 394S 396 398 399
NEW Hydraulic Pump Massey Ferguson Tractor 375 390 390T 393 394S 396 398 399
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Oliver 1355 1365 White 1370 2 60 Hesston 640 HI VOLUME FLOW Hydraulic Pump NEW
Oliver 1355 1365 White 1370 2 60 Hesston 640 HI VOLUME FLOW Hydraulic Pump NEW
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NEW Hydraulic Pump for Massey Ferguson Tractor 178 UK 180 20E 235 245
NEW Hydraulic Pump for Massey Ferguson Tractor 178 UK 180 20E 235 245
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NEW Hydraulic Pump Strainer for Massey Ferguson Tractor 271XE 275 281X 281XE
NEW Hydraulic Pump Strainer for Massey Ferguson Tractor 271XE 275 281X 281XE
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NEW Hydraulic Lift Pump for Massey Ferguson Tractor 178 UK 180 20 2135
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Ford Hydraulic Pump PTO Shaft Bushing 8N 9N 2N
Ford Hydraulic Pump PTO Shaft Bushing 8N 9N 2N
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John Deere Hydraulic Pump
John Deere Hydraulic Pump
$363.64
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NEW Hydraulic Pump for Massey Ferguson Tractor 1080 1085 165 175 175 UK
NEW Hydraulic Pump for Massey Ferguson Tractor 1080 1085 165 175 175 UK
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NEW Hydraulic Pump Strainer for Massey Ferguson Tractor 255 261 263 265 271X
NEW Hydraulic Pump Strainer for Massey Ferguson Tractor 255 261 263 265 271X
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NEW Hydraulic Lift Pump for Massey Ferguson Tractor 150 165 175 175
NEW Hydraulic Lift Pump for Massey Ferguson Tractor 150 165 175 175
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NEW Hydraulic Lift Pump for Massey Ferguson Tractor 283 BRAZIL
NEW Hydraulic Lift Pump for Massey Ferguson Tractor 283 BRAZIL
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NEW Hydraulic Pump Strainer for Massey Ferguson Tractor 240P 245 251XE 253
NEW Hydraulic Pump Strainer for Massey Ferguson Tractor 240P 245 251XE 253
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NEW Hydraulic Pump Strainer for Massey Ferguson Tractor 283 BRAZIL
NEW Hydraulic Pump Strainer for Massey Ferguson Tractor 283 BRAZIL
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D8NN600FA Hydraulic Mounts in Transmission Housing Pump Fits Ford NH TW10 TW15
D8NN600FA Hydraulic Mounts in Transmission Housing Pump Fits Ford NH TW10 TW15
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D8NN600KB E Hydraulic Economy Pump Fits Ford NH 7700
D8NN600KB E Hydraulic Economy Pump Fits Ford NH 7700
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