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.

CCPN600B Hydraulic Pump Repair Kit
CCPN600B Hydraulic Pump Repair Kit
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ALLIS CHALMERS DUAL HYDRAULIC PUMP 79016058 70269936
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Massey Ferguson Hydraulic Pump Repair Kit W Valve Chambers 135 165175 178
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ALLIS CHALMERS HYDRAULIC PUMP 70248735 190 GAS 190XT DIESEL
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ALLIS CHALMERS HYDRAULIC PUMP TRIPLE 70249437 180 185
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Massey Ferguson Hydraulic Pump Repair Kit 1810858M91 35 35 X 65 765 TO35
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Exmark Mower Hydrostatic Drive Pump Hydraulic System Oil Filter Mount
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FORD Main Hydraulic Pump A42 L 5179714
FORD Main Hydraulic Pump A42 L 5179714
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White Oliver Replacement Hydraulic Pump 2 70 1600 1650 1750 1800 1850 1950
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OLIVER 1250 HYDRAULIC PUMP 670668a
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FORD 5000 HYDRAULIC PUMP COVER PLATE D0NNN610A PART  FOR REFERENCE ONLY
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WHITE Main Hydraulic Pump A42 L 909916 1930226
WHITE Main Hydraulic Pump A42 L 909916 1930226
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PTO Tractor Hydraulic Pump 540 RPM 6 Spline 72 GPM Sold By SPLITez
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FIAT Tractor Hydraulic Pump 5179728 8282886 5169039
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FORD Tractor Hydraulic Pump 5129486 5179728 8282886 TL70 4635 4835
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New Gleaner Combine Hydraulic Pump Belt 71194117
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MASSEY FERGUSON HYDRAULIC PUMP 1684582M92 135 150 165 175 20 235 30 40 180
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JOHN DEERE 4020 3020 4010 3010 HYDRAULIC PUMP STROKE CONTROL VALVE R32442R
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JOHN DEERE 4020 3020 4010 3010 HYDRAULIC PUMP SHAFT
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AR94661 New John Deere Hydraulic Pump Assembly 4000 4020 4320 + 1 Year Warranty
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T22915 New John Deere Hydraulic Pump Drive Shaft 2030 2440 2630 2640 300B 302A +
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3072695R91 New International Tractor 424 444 Hydraulic Pump with Power Steering
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70250353 Slip Gear Hydraulic Pump Fits Allis Chalmers 190190XT190XT III
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ORING KIT FOR MASSEY FERGUSON HYDRAULIC PUMP
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MASSEY FERGUSON 50C 50D 7 8 X 13 spline HYDRAULIC PUMP DRIVE SHAFT 729566M91
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David Brown Hydraulic Pump Shaft 4 3 4 long K200464
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Allis Chalmers 5040 Hydraulic Pump
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TX11234 HYDRAULIC PUMP FOR ALL LONG OLD SYLE TRACTORS
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SEAL KIT FOR HYDRAULIC PUMP FOR LONG TRACTOR
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New Massey Ferguson Hydraulic Pump 1684582m92 886683m92 Fits 135 150 165 175 180
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Massey Ferguson Hydraulic Pump Chamber 184471m1
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New Tandem Hydraulic Pump for David Brown A310386
New Tandem Hydraulic Pump for David Brown A310386
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Original Ford 3610 Diesel Tractor External Hydraulic Pump E1NN600AA
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John Deere 720 730 Diesel Hydraulic Pump Idler gear and bearings
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NEW Hydraulic pump valve for Massey Ferguson Tractor 20 897507V92 897507M94
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82023350 Pump Auxillary Hydraulic Fits Ford New HollandLB115TS100TS110TS115
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R37951 New Case International Crawler Hydraulic Pump 850B 850C 850D USA Made
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NEW Hydraulic Pump for Ford New Holland 8160 8260 8360 TL70 TL80TL90 TL100
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