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.

Hard to find CASE TRACTOR 222 224 226 444 446 HYDRAULIC PUMP Luvjoy Style
Hard to find CASE TRACTOR 222 224 226 444 446 HYDRAULIC PUMP Luvjoy Style
$40.00 (8 Bids)
Time Remaining: 13h 23m

Kohler Command Ch18 CH23 CH25 CH 18 23 25 Hydraulic Pump Mount PTO
Kohler Command Ch18 CH23 CH25 CH 18 23 25 Hydraulic Pump Mount PTO
$75.00
Time Remaining: 21h 32m
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INGERSOLL 4120 HYDRAULIC POWER STEERING PUMP 4118 4116 4118D
INGERSOLL 4120 HYDRAULIC POWER STEERING PUMP 4118 4116 4118D
$429.99
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John Deere 717 727 737 757 Hydro Hydraulic Pump JD Part Number D28228
John Deere 717 727 737 757 Hydro Hydraulic Pump JD Part Number D28228
$432.00
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Pump PG 1DQP DY1X XXXX BDP 10A 101 D28227 00D28227 Hydro Gear hydraulic transaxl
Pump PG 1DQP DY1X XXXX BDP 10A 101 D28227 00D28227 Hydro Gear hydraulic transaxl
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Transmission ZC DMBB 4DDC 2PPX EZT 71650 918 04431 Hydro Gear OEM
Transmission ZC DMBB 4DDC 2PPX EZT 71650 918 04431 Hydro Gear OEM
$579.76
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CASE 224 220 222 HYDRAULIC PUMP
CASE 224 220 222 HYDRAULIC PUMP
$88.00
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TORO GROUNDSMASTER 3000D 3000 82 contour deck hydraulic pump 98 5156 FREE SHIP
TORO GROUNDSMASTER 3000D 3000 82 contour deck hydraulic pump 98 5156 FREE SHIP
$299.99
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Bradley Cliplift Lawn Mower Jack Lift MJ3000 Hydraulic Foot Pump
Bradley Cliplift Lawn Mower Jack Lift MJ3000 Hydraulic Foot Pump
$159.99
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Housing 70272 62768 AXLE CARRIER HYDRO GEAR HYDRAULIC pump transaxle
Housing 70272 62768 AXLE CARRIER HYDRO GEAR HYDRAULIC pump transaxle
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Expansion plate 70868L HYDRO GEAR OEM HYDRAULIC pump transaxle
Expansion plate 70868L HYDRO GEAR OEM HYDRAULIC pump transaxle
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Pump PL BGQV DY1X XXXX BDP 10L 119 BDP 10L 119P 38345 HYDRO GEAR HYDRAULIC trans
Pump PL BGQV DY1X XXXX BDP 10L 119 BDP 10L 119P 38345 HYDRO GEAR HYDRAULIC trans
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Pump PR 1MCC EY1X XXXX 786368 BDP 16A 16CC HYDRO GEAR HYDRAULIC OEM transaxle
Pump PR 1MCC EY1X XXXX 786368 BDP 16A 16CC HYDRO GEAR HYDRAULIC OEM transaxle
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Pump PR 1HBC EY1X XXXX BDP 16A 410 482695 HYDROGEAR HYDRAULIC transaxle
Pump PR 1HBC EY1X XXXX BDP 16A 410 482695 HYDROGEAR HYDRAULIC transaxle
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Axle 72181 HYDRO GEAR HYDRAULIC KIT FOR transmission pump transaxle
Axle 72181 HYDRO GEAR HYDRAULIC KIT FOR transmission pump transaxle
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Plug 9005110 7500 straight thread 3 4 16 2ea Hydro Gear hydraulic pump transaxle
Plug 9005110 7500 straight thread 3 4 16 2ea Hydro Gear hydraulic pump transaxle
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Filter head 50207 HYDRO GEAR HYDRAULIC OEM pump transaxle transmission
Filter head 50207 HYDRO GEAR HYDRAULIC OEM pump transaxle transmission
$16.07
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Pump PG 1JPC DY1X XXXX BDP 10A 364 BDP 10A 366 HYDRO GEAR HYDRAULIC transaxle
Pump PG 1JPC DY1X XXXX BDP 10A 364 BDP 10A 366 HYDRO GEAR HYDRAULIC transaxle
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Pump PG 1KRA DY1X XXXX BDP 10A 324 TCA14668 HYDRO GEAR HYDRAULIC transaxle
Pump PG 1KRA DY1X XXXX BDP 10A 324 TCA14668 HYDRO GEAR HYDRAULIC transaxle
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Transmission 70864L LH CENTER SECTION HYDRO GEAR HYDRAULIC pump transaxle
Transmission 70864L LH CENTER SECTION HYDRO GEAR HYDRAULIC pump transaxle
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Pump PG 1GRQ D11X XXXX 00203849 HYDRO GEAR HYDRAULIC transaxle transmission
Pump PG 1GRQ D11X XXXX 00203849 HYDRO GEAR HYDRAULIC transaxle transmission
$496.22
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Pump PG 1GNP DY1X XXXX BDP 10A 414 103 1942 21545200 Hydro Gear Hydraulic
Pump PG 1GNP DY1X XXXX BDP 10A 414 103 1942 21545200 Hydro Gear Hydraulic
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Transaxle ZC AUBB 3D5A 2WPX ZC AUBB 3D5A 2DPX HYDRO GEAR HYDRAULIC OEM pump
Transaxle ZC AUBB 3D5A 2WPX ZC AUBB 3D5A 2DPX HYDRO GEAR HYDRAULIC OEM pump
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Transaxle 2510049 BDU 21 L A center section HYDRO GEAR hydraulic pump
Transaxle 2510049 BDU 21 L A center section HYDRO GEAR hydraulic pump
$335.80
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Transaxle 70250 50704 70214 70201 CENTER SECTION HYDRO GEAR HYDRAULIC pump
Transaxle 70250 50704 70214 70201 CENTER SECTION HYDRO GEAR HYDRAULIC pump
$157.54
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Housing 62590 HYDRAULIC Hydro Gear hydraulic transaxle pump transmission
Housing 62590 HYDRAULIC Hydro Gear hydraulic transaxle pump transmission
$94.98
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Pump PG 3GQC NY1X XXXX BDP 10A 416 394160 BDP 10A 415 HYDRO GEAR HYDRAULIC tran
Pump PG 3GQC NY1X XXXX BDP 10A 416 394160 BDP 10A 415 HYDRO GEAR HYDRAULIC tran
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Transmission 71565 CENTER SECTION HYDRO GEAR hydraulic pump  transaxles
Transmission 71565 CENTER SECTION HYDRO GEAR hydraulic pump transaxles
$237.13
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Pump BDP 10L 990 HYDRO GEAR OEM hydraulic transaxle transmission
Pump BDP 10L 990 HYDRO GEAR OEM hydraulic transaxle transmission
$476.49
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Transmission 70667 CENTER SECTION HYDRO GEAR HYDRAULIC pump transaxle NLA
Transmission 70667 CENTER SECTION HYDRO GEAR HYDRAULIC pump transaxle NLA
$204.69
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Pump PG 4DCC DZ1X XXXX BDP 10A 103 HYDRO GEAR HYDRAULIC transaxle
Pump PG 4DCC DZ1X XXXX BDP 10A 103 HYDRO GEAR HYDRAULIC transaxle
$510.16
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Center section 70684 transmission transaxle pump HYDRO GEAR HYDRAULIC OEM
Center section 70684 transmission transaxle pump HYDRO GEAR HYDRAULIC OEM
$199.76
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Transmission ZC AUBB 2K7B 1WPX HYDRO GEAR OEM ZT2200 HYDRAULIC pump transaxle
Transmission ZC AUBB 2K7B 1WPX HYDRO GEAR OEM ZT2200 HYDRAULIC pump transaxle
$552.54
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Transmission ZC AHBB 3D8B 2DPX ZT2200 HYDRO GEAR HYDRAULIC pump transaxle
Transmission ZC AHBB 3D8B 2DPX ZT2200 HYDRO GEAR HYDRAULIC pump transaxle
$550.24
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Bearing needle 44099 210 1000 HYDRO GEAR HYDRAULIC pump transaxle transmission
Bearing needle 44099 210 1000 HYDRO GEAR HYDRAULIC pump transaxle transmission
$13.61
Time Remaining: 2d 15h 24m
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Pump PG 3KCC NV1B XXXX 5023373 HYDRO GEAR HYDRAULIC transaxle
Pump PG 3KCC NV1B XXXX 5023373 HYDRO GEAR HYDRAULIC transaxle
$532.86
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Pump PE 1HQQ DP1X XXXX 31490027 119 0176 Hydro Gear hydraulic transaxle
Pump PE 1HQQ DP1X XXXX 31490027 119 0176 Hydro Gear hydraulic transaxle
$485.32
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Pump PG 1GAB DY1X XXXX 02964400 BDP 10A 427 103 2675 Hydro Gear hydraulic
Pump PG 1GAB DY1X XXXX 02964400 BDP 10A 427 103 2675 Hydro Gear hydraulic
$522.37
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Pump PG 1GQQ DY1X XXXX BDP 10A 437 109 4988 391457 HYDRO GEAR HYDRAULIC
Pump PG 1GQQ DY1X XXXX BDP 10A 437 109 4988 391457 HYDRO GEAR HYDRAULIC
$476.50
Time Remaining: 2d 15h 24m
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Hub kit 72073 21543888 HYDRO GEAR hydraulic pump transmission transaxle
Hub kit 72073 21543888 HYDRO GEAR hydraulic pump transmission transaxle
$56.00
Time Remaining: 2d 15h 24m
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Housing main 79627 HYDRO GEAR hydraulic pump transaxle transmission
Housing main 79627 HYDRO GEAR hydraulic pump transaxle transmission
$117.87
Time Remaining: 2d 15h 24m
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Transmission BDU 10S 115 HYDRO GEAR HYDRAULIC pump transaxle
Transmission BDU 10S 115 HYDRO GEAR HYDRAULIC pump transaxle
$650.72
Time Remaining: 2d 15h 24m
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Pump PG 1JQN DY1X XXXX 4112782 BDP 10A 309 HYDRO GEAR HYDRAULIC OEM transaxle
Pump PG 1JQN DY1X XXXX 4112782 BDP 10A 309 HYDRO GEAR HYDRAULIC OEM transaxle
$470.59
Time Remaining: 2d 15h 24m
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Pump PG 1GCC DY1X XXXX BDP 10A 419 482644 13 695 Hydro Gear hydraulic transaxle
Pump PG 1GCC DY1X XXXX BDP 10A 419 482644 13 695 Hydro Gear hydraulic transaxle
$522.37
Time Remaining: 2d 15h 24m
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Transmission 71561 CENTER SECTION HYDRO GEAR HYDRAULIC pump transaxle
Transmission 71561 CENTER SECTION HYDRO GEAR HYDRAULIC pump transaxle
$211.02
Time Remaining: 2d 15h 24m
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Ball bearing 44121 2EA 75X40X12 SEALED HYDRO GEAR hydraulic transaxle pump
Ball bearing 44121 2EA 75X40X12 SEALED HYDRO GEAR hydraulic transaxle pump
$35.11
Time Remaining: 2d 15h 24m
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Pump PW JKBA GY1C XXXX 109 7543 21CC Hydro Gear transaxle transmission
Pump PW JKBA GY1C XXXX 109 7543 21CC Hydro Gear transaxle transmission
$519.59
Time Remaining: 2d 15h 24m
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Transmission 72235 CENTER SECTION HYDRO GEAR HYDRAULIC PUMP transaxle
Transmission 72235 CENTER SECTION HYDRO GEAR HYDRAULIC PUMP transaxle
$131.91
Time Remaining: 2d 15h 24m
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Pump PG 1JQQ DY1X XXXX BDP 10A 319 BDP 10A 305 109 4987 HYDRO GEAR HYDRAULIC
Pump PG 1JQQ DY1X XXXX BDP 10A 319 BDP 10A 305 109 4987 HYDRO GEAR HYDRAULIC
$476.50
Time Remaining: 2d 15h 24m
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Coupling 44084 HYDRO GEAR OEM HALF 4EACH hydraulic pump transaxle transmission
Coupling 44084 HYDRO GEAR OEM HALF 4EACH hydraulic pump transaxle transmission
$23.61
Time Remaining: 2d 15h 24m
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Pump PG 1HCC DL1X XXXX 110649 HYDRO GEAR HYDRAULIC transaxle
Pump PG 1HCC DL1X XXXX 110649 HYDRO GEAR HYDRAULIC transaxle
$460.77
Time Remaining: 2d 15h 24m
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Pump PL BAQP DY1X XXXX D28040 11025746 11025783 BDP 10L 300P HYDROGEAR HYDRAULIC
Pump PL BAQP DY1X XXXX D28040 11025746 11025783 BDP 10L 300P HYDROGEAR HYDRAULIC
$535.48
Time Remaining: 2d 15h 24m
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Pump PR 2JBC GY1E XXXX 483100 BDP 16A 16CC HYDRO GEAR HYDRAULIC transaxle
Pump PR 2JBC GY1E XXXX 483100 BDP 16A 16CC HYDRO GEAR HYDRAULIC transaxle
$542.03
Time Remaining: 2d 15h 24m
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Transmission BDU 10L 210 160 1030 HYDRO GEAR OEM Hydraulic pump transaxle
Transmission BDU 10L 210 160 1030 HYDRO GEAR OEM Hydraulic pump transaxle
$630.54
Time Remaining: 2d 15h 24m
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Transmission ZC APBB 3D7B 1TPXZC APBB 3D7B 1GPX hydraulic transaxle pump
Transmission ZC APBB 3D7B 1TPXZC APBB 3D7B 1GPX hydraulic transaxle pump
$570.07
Time Remaining: 2d 15h 24m
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Pump PG DACC DY1X XXXX 65071 BDP 10A 207 PG DACC D HYDRO GEAR 10CC VARIABLE OEM
Pump PG DACC DY1X XXXX 65071 BDP 10A 207 PG DACC D HYDRO GEAR 10CC VARIABLE OEM
$476.50
Time Remaining: 2d 15h 24m
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Block cylinder 70723 7 PISTON HYDRO GEAR hydraulic pump transaxle transmission
Block cylinder 70723 7 PISTON HYDRO GEAR hydraulic pump transaxle transmission
$86.99
Time Remaining: 2d 15h 24m
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Bearing kit 71551 HYDRO GEAR OEM HYDRAULIC pump transaxle transmission
Bearing kit 71551 HYDRO GEAR OEM HYDRAULIC pump transaxle transmission
$66.05
Time Remaining: 2d 15h 24m
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Seal kit 71410 21543999 HYDRO GEAR hydraulic pump transaxle transmission
Seal kit 71410 21543999 HYDRO GEAR hydraulic pump transaxle transmission
$49.11
Time Remaining: 2d 15h 24m
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Housing 2513020 BDU 10 KIT HYDRO GEAR FOR hydraulic pump transaxle transmission
Housing 2513020 BDU 10 KIT HYDRO GEAR FOR hydraulic pump transaxle transmission
$83.10
Time Remaining: 2d 15h 24m
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Shaft 70620 PUMP HYDRO GEAR OEM 15MM KEYED HYDRAULIC transmission transaxle
Shaft 70620 PUMP HYDRO GEAR OEM 15MM KEYED HYDRAULIC transmission transaxle
$144.90
Time Remaining: 2d 15h 24m
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Pump PE 1KCC DY1X XXXX 10CC Hydro Gear hydraulic OEM transaxle transmission
Pump PE 1KCC DY1X XXXX 10CC Hydro Gear hydraulic OEM transaxle transmission
$505.39
Time Remaining: 2d 15h 24m
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Center Section 71529 WITH FILTER HYDRO GEAR OEM HYDRAULIC pump transaxle
Center Section 71529 WITH FILTER HYDRO GEAR OEM HYDRAULIC pump transaxle
$149.13
Time Remaining: 2d 15h 24m
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Fan kit 72137 HYDRO GEAR OEM PULLEY STYLE hydraulic pump transaxle transmission
Fan kit 72137 HYDRO GEAR OEM PULLEY STYLE hydraulic pump transaxle transmission
$35.32
Time Remaining: 2d 15h 24m
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Pump PE 1KQQ DN1X XXXX PE1KQQ 31490026 Hydro Gear hydraulic tranaxle transmissio
Pump PE 1KQQ DN1X XXXX PE1KQQ 31490026 Hydro Gear hydraulic tranaxle transmissio
$490.26
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Pump PL AAQQ DY1X XXXX BDP 10L 134 990765015 HYDRO GEAR HYDRAULIC transaxle
Pump PL AAQQ DY1X XXXX BDP 10L 134 990765015 HYDRO GEAR HYDRAULIC transaxle
$515.83
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Filter 71497 Hydro Gear hydraulic pump transmission transaxle OEM
Filter 71497 Hydro Gear hydraulic pump transmission transaxle OEM
$18.78
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Shaft 70580 PUMP HYDRO GEAR OEM HYDRAULIC pump transmission transaxle
Shaft 70580 PUMP HYDRO GEAR OEM HYDRAULIC pump transmission transaxle
$146.00
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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
$205.23
Time Remaining: 2d 15h 24m
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Center section 71563 LH HYDRO GEAR OEM HYDRAULIC pump transaxle transmission NLA
Center section 71563 LH HYDRO GEAR OEM HYDRAULIC pump transaxle transmission NLA
$212.07
Time Remaining: 2d 15h 24m
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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
$8.61
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Housing kit 2513017 2003065 BDP 10 HYDRO GEAR OEM hydraulic pump transaxle
Housing kit 2513017 2003065 BDP 10 HYDRO GEAR OEM hydraulic pump transaxle
$83.31
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Housing kit 71754 HYDRO GEAR hydraulic pump transaxle transmission
Housing kit 71754 HYDRO GEAR hydraulic pump transaxle transmission
$100.96
Time Remaining: 2d 15h 24m
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Transmission 171613 IHT 322 0510 HYDRO GEAR HYDRAULIC pump transaxle
Transmission 171613 IHT 322 0510 HYDRO GEAR HYDRAULIC pump transaxle
$579.76
Time Remaining: 2d 15h 24m
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Transmission BDU 10L 120 HYDRO GEAR Hydraulic Pumps  Transaxles
Transmission BDU 10L 120 HYDRO GEAR Hydraulic Pumps Transaxles
$581.06
Time Remaining: 2d 15h 24m
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Pump PK 3KPP FA1C XXXX 31490030 REV Hydro Gear hydraulic transaxle transmissio
Pump PK 3KPP FA1C XXXX 31490030 REV Hydro Gear hydraulic transaxle transmissio
$552.29
Time Remaining: 2d 15h 24m
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