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.

IH 3200B WISCONSIN VH4D HYDRAULIC PUMP
IH 3200B WISCONSIN VH4D HYDRAULIC PUMP
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Time Remaining: 3h 46m
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IH 3200B WISCONSIN VH4D HYDRAULIC PUMP MOUNT
IH 3200B WISCONSIN VH4D HYDRAULIC PUMP MOUNT
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Bolens Tube Frame Hydraulic Add On Kit Pump Mounting Bracket 1722473 Gear Lift
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Jacobsen LF3400 LF3800 Hydrostatic transmission drive pump hydraulic diesel
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Hydrostatic  Aux Hydraulic Pump 95 3450 93 2175 Toro 6500 D Fairway Mower 1553
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CASE 220 Tractor Hydraulic Oil Pump Mount
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Toro Hydraulic Pump 105 9770 NEW
Toro Hydraulic Pump 105 9770 NEW
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Transmission Transaxle Hydro Hydraulic Pump on John Deere 185 Top Fan
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John Deere 2500 Diesel Hydraulic Pump
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Bolens Wheel horse Cub Cadet Hein Werner Hydraulic pump oil seal 1722038
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Case Ingersoll Front cut mower 5020V Hydraulic transmission  hydro pump LH
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Case Ingersoll Front cut mower 5020V Hydraulic transmission  hydro pump RH
Case Ingersoll Front cut mower 5020V Hydraulic transmission hydro pump RH
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Cub Cadet hydraulic lift pump
Cub Cadet hydraulic lift pump
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Excel Hustler 340 Hydraulic Gear Pump 4500 4600 4300 4400 Wing Mower
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Bolens Iseki TX1500 G172 Tractor KE75 17hp Diesel Engine Hydraulic Oil Pump Gear
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Kohler Parts Hydraulic Pump Adapter for 18 27HP Command Twi KO Adapter 2475509
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CASE Ingersoll 448 Tractor Hydraulic Oil Pump Oil Tube Hose
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Spring kit 70873 RTN CW HVY HYDRO GEAR HYDRAULIC pump transaxle transmission
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Pump CHARGE 70924 KIT HYDRO GEAR HYDRAULIC OEM transaxle transmission
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Expansion plate 70868L HYDRO GEAR OEM HYDRAULIC pump transaxle
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Housing 70272 62768 AXLE CARRIER HYDRO GEAR HYDRAULIC pump transaxle
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1965 CASE Colt Super H Tractor Hydraulic Oil Pump Mount
1965 CASE Colt Super H Tractor Hydraulic Oil Pump Mount
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1965 CASE Colt Super H Tractor Hydraulic Oil Pump
1965 CASE Colt Super H Tractor Hydraulic Oil Pump
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KUBOTA G5200 G6200 TRANSAXLE AND HYDRAULIC PUMP
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JOHN DEERE HYDRAULIC PUMP LINE METAL HYDRO 7h 17  7h 19
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GEAR HYDRAULIC PUMP Yanmar 3TN84 John Deere 870 955 Engine Takeuchi TB035
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JOHN DEERE HYDRAULIC DRIVE PUMP New in Box PART TCA12335
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lawnmower hydraulic pump HYDRO GEAR PG 1BNQ DB1X XXXX 1 brand new
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SIMPLICITY HYDRAULIC PUMP PULLEY P N 157430
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JOHN DEERE 317 HYDRAULIC PUMP LINE METAL HYDRO
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1972 Case 444 Garden Tractor  9659815 Part  Hydraulic Pump Mount
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Gravely Westchester Hydraulic Pump
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CASE Ingersoll 448 Tractor Hydraulic Oil Pump Mount
CASE Ingersoll 448 Tractor Hydraulic Oil Pump Mount
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CASE Ingersoll 448 Tractor Hydraulic Oil Pump
CASE Ingersoll 448 Tractor Hydraulic Oil Pump
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Hydrostatic Pump Dixie Chopper Silver Eagle White Hydraulics for parts or repa
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Kohler Command Ch18 CH23 CH25 CH 18 23 25 Hydraulic Pump Mount PTO
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Toro Greensmaster 3000 Hydraulic Pump Greens Mower III IV
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Toro Greensmaster III Hydraulic Pump Greens Mower 3000
Toro Greensmaster III Hydraulic Pump Greens Mower 3000
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Case 224 Mower Hydraulic Pump
Case 224 Mower Hydraulic Pump
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Front Hydraulic Pump 2208182 Jacobsen AR 2500 Rotary Mower 1326 250
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Hydrostatic Hydraulic Pump 2208192 178037 M35 Jacobsen Ransomes AR 2500 Mower
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John Deere 717 727 737 757 Hydro Hydraulic Pump JD Part Number D28228
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Hydraulic reel pump for Jacobsen LF128
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Hydraulic wheel pump Jacobsen LF128
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CASE 224 220 222 HYDRAULIC PUMP
CASE 224 220 222 HYDRAULIC PUMP
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Time Remaining: 5d 3h 25m
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Housing 70966 SECOND KIT Hydro Gear hydraulic pump transaxle transmission
Housing 70966 SECOND KIT Hydro Gear hydraulic pump transaxle transmission
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Housing main 71585 RH SPECIAL ORDER HYDRO GEAR hydraulic pump transaxle OEM
Housing main 71585 RH SPECIAL ORDER HYDRO GEAR hydraulic pump transaxle OEM
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Housing 70483 SIDE HYDRO GEAR hydraulic pump transaxle transmission
Housing 70483 SIDE HYDRO GEAR hydraulic pump transaxle transmission
$85.50
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Housing 62590 HYDRAULIC Hydro Gear hydraulic transaxle pump transmission
Housing 62590 HYDRAULIC Hydro Gear hydraulic transaxle pump transmission
$114.00
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Housing kit 2513017 2003065 BDP 10 HYDRO GEAR OEM hydraulic pump transaxle
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Housing kit 71754 HYDRO GEAR hydraulic pump transaxle transmission
Housing kit 71754 HYDRO GEAR hydraulic pump transaxle transmission
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Housing 44863 lower HYDRO GEAR OEM hydraulic pump transaxle transmission
Housing 44863 lower HYDRO GEAR OEM hydraulic pump transaxle transmission
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Main housing 70627 KIT HYDRO GEAR hydraulic pump transaxle transmission OEM
Main housing 70627 KIT HYDRO GEAR hydraulic pump transaxle transmission OEM
$148.99
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Housing main 79627 HYDRO GEAR hydraulic pump transaxle transmission
Housing main 79627 HYDRO GEAR hydraulic pump transaxle transmission
$151.90
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Housing 71717 HYDRO GEAR OEM hydraulic pump transaxle transmission
Housing 71717 HYDRO GEAR OEM hydraulic pump transaxle transmission
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Bradley Cliplift Lawn Mower Jack Lift MJ3000 Hydraulic Foot Pump
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$149.99
Time Remaining: 5d 8h 45m
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John Deere 400 sundstrand hydraulic transmission pump
John Deere 400 sundstrand hydraulic transmission pump
$225.00
Time Remaining: 5d 9h 24m

Jacobsen Cushman Ryan 545370 Manual Hydraulic Pump Kit Oem New in box
Jacobsen Cushman Ryan 545370 Manual Hydraulic Pump Kit Oem New in box
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Time Remaining: 5d 9h 32m
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Brake arm 70391 70330 51514200 LH HYDRO GEAR hydraulic pump transaxle
Brake arm 70391 70330 51514200 LH HYDRO GEAR hydraulic pump transaxle
$10.00
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Brake arm 70392 51514300 HYDRO GEAR kit right hand 2ea hydraulic pump transaxle
Brake arm 70392 51514300 HYDRO GEAR kit right hand 2ea hydraulic pump transaxle
$14.94
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Brake arm 71087 LEFT LH 2EA HYDRO GEAR HYDRAULIC pump transaxle transmission
Brake arm 71087 LEFT LH 2EA HYDRO GEAR HYDRAULIC pump transaxle transmission
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Time Remaining: 5d 10h 21m
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Toro Reelmaster 5100 D Hydraulic Pump Groundsmaster Reel Master
Toro Reelmaster 5100 D Hydraulic Pump Groundsmaster Reel Master
$174.99
Time Remaining: 5d 12h 14m
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Ariens tractor hydraulic pump hydro gear S 14H GT series tractor
Ariens tractor hydraulic pump hydro gear S 14H GT series tractor
$50.00
Time Remaining: 5d 12h 26m
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Case 442 444 Garden Tractor Lovejoy Hydraulic Pump Coupling
Case 442 444 Garden Tractor Lovejoy Hydraulic Pump Coupling
$9.18 (2 Bids)
Time Remaining: 5d 14h 27m

hydraulic pump multi stage gear pump from a john deere reel mower
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$135.00
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John Deere 737 757 647A 657A 667A 717A 727 Dual Hydro Pump Hydraulic DUP10S
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Transmission 918 04463 MTD 19 INCH MOWER HYDRO GEAR HYDRAULIC pump transaxle
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John Deere 318 Tractor Hydraulic Hydro Transmission Rear Axle Oil Tube
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Transmission 01001543 BDR 306L HYDRO GEAR HYDRAULIC OEM pump transaxle
Transmission 01001543 BDR 306L HYDRO GEAR HYDRAULIC OEM pump transaxle
$349.99
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Hydro Gear Hydraulic Pump Zero Turn Lawn Mower 103 2675
Hydro Gear Hydraulic Pump Zero Turn Lawn Mower 103 2675
$435.76
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John Deere F710 F725 Front Mount Hydraulic Power Steering Valve Pump AM119987
John Deere F710 F725 Front Mount Hydraulic Power Steering Valve Pump AM119987
$299.99
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Economy Power King Hydraulic Pump and Bracket
Economy Power King Hydraulic Pump and Bracket
$209.00
Time Remaining: 6d 9h 18m
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Economy Power King Jim Dandy Hydraulic Pump Mounting Plate
Economy Power King Jim Dandy Hydraulic Pump Mounting Plate
$19.00
Time Remaining: 6d 10h 54m

Pump PR 5JQC FY1X X1XX 391462 BDP 16A 302 HYDRO GEAR HYDRAULIC PUMP Zero Turn
Pump PR 5JQC FY1X X1XX 391462 BDP 16A 302 HYDRO GEAR HYDRAULIC PUMP Zero Turn
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Pump BDP 16A 401 HYDRO GEAR HYDRAULIC PUMP Zero Turn Mower Grasshopper 325
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$150.00
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Case 446 Tractor Hydraulic Oil Pump Mount
Case 446 Tractor Hydraulic Oil Pump Mount
$29.99
Time Remaining: 7d 11h 43m
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