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.

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1176000 Tandem Hydraulic Pump Fits Duetz DXAB 80 DXAB 86 DXAB 92 DX3 60 DX3 70
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John Deere Hydraulic Pump AXE11707 PG203656 S680 S685 S690 Combine STS Hillmaste
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HYDRAULIC PUMP CASE DAVID BROWN TRACTORS K962635
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FORD 3000 INJECTOR + HYDRAULIC PUMP STARTER ALTERNATOR FILTER ALL ONE PRICE
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Case IH Hydraulic Pump Assembly K919048
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IH Farmall Live Hydraulic Pump Manifold Lines H Super H 300 350 350 Utility
IH Farmall Live Hydraulic Pump Manifold Lines H Super H 300 350 350 Utility
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Vicker Vane Hydraulic Pump Front Mounted Utility Tractor IH Farmall Oliver Ford
Vicker Vane Hydraulic Pump Front Mounted Utility Tractor IH Farmall Oliver Ford
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Massey Ferguson 252569M94 Hydraulic Pump 300 410 510 540 550
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P 192160 Crankshaft Pulley FORD 9N 2N 8N for Front Hydraulic Pump
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Hydraulic Pump Single Stage for Massey Ferguson 2640 TRACTOR 3038732M2
Hydraulic Pump Single Stage for Massey Ferguson 2640 TRACTOR 3038732M2
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3038732M2 Hydraulic Pump Single Stage for Massey Ferguson 3660 TRACTOR
3038732M2 Hydraulic Pump Single Stage for Massey Ferguson 3660 TRACTOR
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3038732M2 Hydraulic Pump Single Stage for Massey Ferguson 3525 TRACTOR
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Tandem Hydraulic Pump for Case 1690 TRACTOR K310386
Tandem Hydraulic Pump for Case 1690 TRACTOR K310386
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Hydraulic Pump Single Stage for Massey Ferguson 2705 TRACTOR 3038732M2
Hydraulic Pump Single Stage for Massey Ferguson 2705 TRACTOR 3038732M2
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Hydraulic Pump for Case SUPER H TRACTOR 128191C91
Hydraulic Pump for Case SUPER H TRACTOR 128191C91
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3038732M2 Hydraulic Pump Single Stage for Massey Ferguson 3545 TRACTOR
3038732M2 Hydraulic Pump Single Stage for Massey Ferguson 3545 TRACTOR
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Hydraulic Pump for White G900 TRACTOR 207130065
Hydraulic Pump for White G900 TRACTOR 207130065
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Tandem Hydraulic Pump for Case 1694 TRACTOR K310386
Tandem Hydraulic Pump for Case 1694 TRACTOR K310386
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Hydraulic Pump for Case 350 TRACTOR 128191C91
Hydraulic Pump for Case 350 TRACTOR 128191C91
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Hydraulic Pump Single Stage for Massey Ferguson 2745 TRACTOR 3038732M2
Hydraulic Pump Single Stage for Massey Ferguson 2745 TRACTOR 3038732M2
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3038732M2 Hydraulic Pump Single Stage for Massey Ferguson 3630 TRACTOR
3038732M2 Hydraulic Pump Single Stage for Massey Ferguson 3630 TRACTOR
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Hydraulic Pump Single Stage for Massey Ferguson 2775 TRACTOR 3038732M2
Hydraulic Pump Single Stage for Massey Ferguson 2775 TRACTOR 3038732M2
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Tandem Hydraulic Pump for Case 1594 TRACTOR K310386
Tandem Hydraulic Pump for Case 1594 TRACTOR K310386
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3038732M2 Hydraulic Pump Single Stage for Massey Ferguson 3650 TRACTOR
3038732M2 Hydraulic Pump Single Stage for Massey Ferguson 3650 TRACTOR
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Hydraulic Pump Single Stage for Massey Ferguson 3680 TRACTOR 3038732M2
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Hydraulic Pump for White JET STAR 3 TRACTOR 207001354
Hydraulic Pump for White JET STAR 3 TRACTOR 207001354
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3038732M2 Hydraulic Pump Single Stage for Massey Ferguson 3655 TRACTOR
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Hydraulic Pump Single Stage for Massey Ferguson 2805 TRACTOR 3038732M2
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1176000 New Deutz Tandem Hydraulic Pump DXAB 80 86 92 DX3 60 70 80 90 DX4 10 ++
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NEW Hydraulic Pump for John Deere Tractor 4000 4020 Others AR94661
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HYDRAULIC PUMP FORD 2310 2600 2610 3600 36105610
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HYDRAULIC PUMP FORD 800086008700900096009700TW
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HYDRAULIC PUMP KIT FORD 8N 9N 2N FERGUSON TO20TO30
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RE28153 John Deere Reman Hydraulic Pump 2155 2250 2355 2450 2555 2650 2755 ++
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HYDRAULIC PUMP FORD NH TRACTORS 8160 8260 8360 TL100 TL70 TL80 TL90 TM115
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MCV HYDRAULIC PUMP IH FARMALL 9 GPM 527397R93
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70933C91 Hydraulic Pump International 330 340 460 504 544 560 606 656 756 766 +
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Drive Coupler Shaft Hydraulic Pump John Deere Tractor Backhoe 600 3020 4000 500
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T15724 John Deere 1010 Hydraulic Pump Drive Gear T14578
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FARMALL H HV M MV MD SUPER SH SHV SM SMV  SMD HYDRAULIC PUMP SEAL 471192
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D8NN600FA Ford New Holland TW10 TW20 Tractor New 16 GPM Hydraulic Pump
D8NN600FA Ford New Holland TW10 TW20 Tractor New 16 GPM Hydraulic Pump
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John Deere Hydraulic Pump AH227024
John Deere Hydraulic Pump AH227024
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Farmtrac Montana 330 HST LG4395 Hydraulic Lift Pump Part 1823351
Farmtrac Montana 330 HST LG4395 Hydraulic Lift Pump Part 1823351
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NEW Hydraulic Pump for Case International Tractor JX90U Others 5179726
NEW Hydraulic Pump for Case International Tractor JX90U Others 5179726
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NEW Hydraulic Pump for Long Tractor 260C 310 310C Others TX11234
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Belarus hydraulic pump fits most 65 100 HP No NSH32A3
Belarus hydraulic pump fits most 65 100 HP No NSH32A3
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MF Hydraulic Pump Repair Kit for 35  65 556601
MF Hydraulic Pump Repair Kit for 35 65 556601
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Massey Ferguson Hydraulic Pump Drive Shaft Assembly 707166M92
Massey Ferguson Hydraulic Pump Drive Shaft Assembly 707166M92
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NEW Hydraulic Pump for Case International Tractor JX80U JX100U
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John Deere Hydraulic Pump Drive Shaft R34359
John Deere Hydraulic Pump Drive Shaft R34359
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15000 35 QTTurbo II Air Hydraulic Pump
15000 35 QTTurbo II Air Hydraulic Pump
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15001 3 Quart Hi Flow Air Driven Hydraulic Pump
15001 3 Quart Hi Flow Air Driven Hydraulic Pump
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15020 5 QTTurbo II Air Hydraulic Pump
15020 5 QTTurbo II Air Hydraulic Pump
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