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.

Aux Front Reel Hydraulic Pump AMT1951 John Deere 2500 Greens Mower 2500A 2500B
Aux Front Reel Hydraulic Pump AMT1951 John Deere 2500 Greens Mower 2500A 2500B
$175.00
Time Remaining: 8h 59m
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Hydrostatic Hydraulic Pump AMT2471 John Deere 2500 Greens Mower 2500A 2243
Hydrostatic Hydraulic Pump AMT2471 John Deere 2500 Greens Mower 2500A 2243
$175.00
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1965 CASE Colt Super H Tractor Hydraulic Oil Pump Mount
1965 CASE Colt Super H Tractor Hydraulic Oil Pump Mount
$21.49
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Hydrostatic Hydraulic Pump 889734 Ransomes GreensPlex 160 Mower 160D
Hydrostatic Hydraulic Pump 889734 Ransomes GreensPlex 160 Mower 160D
$350.00
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Auxiliary Hydraulic Reel Pump 893334 Ransomes GreensPlex 160 Mower 160D
Auxiliary Hydraulic Reel Pump 893334 Ransomes GreensPlex 160 Mower 160D
$350.00
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JOHN DEERE HYDRAULIC PUMP LINE METAL HYDRO 7h 17  7h 19
JOHN DEERE HYDRAULIC PUMP LINE METAL HYDRO 7h 17 7h 19
$50.00
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Excel Hustler 340 Hydraulic Gear Pump 4500 4600 4300 4400 Wing Mower
Excel Hustler 340 Hydraulic Gear Pump 4500 4600 4300 4400 Wing Mower
$199.99
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Pump PR 1JBC EY1X XXXX BDP 16A 307 48296 HYDRO GEAR HYDRAULIC transaxle
Pump PR 1JBC EY1X XXXX BDP 16A 307 48296 HYDRO GEAR HYDRAULIC transaxle
$483.03
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lawnmower hydraulic pump HYDRO GEAR PG 1BNQ DB1X XXXX 1 brand new
lawnmower hydraulic pump HYDRO GEAR PG 1BNQ DB1X XXXX 1 brand new
$210.00
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JOHN DEERE 317 HYDRAULIC PUMP LINE METAL HYDRO
JOHN DEERE 317 HYDRAULIC PUMP LINE METAL HYDRO
$24.99
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Housing 71717 HYDRO GEAR OEM hydraulic pump transaxle transmission
Housing 71717 HYDRO GEAR OEM hydraulic pump transaxle transmission
$70.58
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CASE Ingersoll 448 Tractor Hydraulic Oil Pump Mount
CASE Ingersoll 448 Tractor Hydraulic Oil Pump Mount
$25.79
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Breather kit 71510 Hydro Gear hydraulic pump transaxle transmission
Breather kit 71510 Hydro Gear hydraulic pump transaxle transmission
$23.89
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TRUNNION ARM 2003005 BD 10 IHT 10CC HYDRO GEAR hydraulic pumps  transaxles
TRUNNION ARM 2003005 BD 10 IHT 10CC HYDRO GEAR hydraulic pumps transaxles
$45.00
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End cap 2513016 HG 2513016 BDP 10 KIT HYDRO GEAR HYDRAULIC pump transaxle
End cap 2513016 HG 2513016 BDP 10 KIT HYDRO GEAR HYDRAULIC pump transaxle
$339.00
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Manifold 51074 auxillary Hydro Gear Hydraulic pump transaxle transmission OEM
Manifold 51074 auxillary Hydro Gear Hydraulic pump transaxle transmission OEM
$59.98
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Swash plate 2513015 HYDRO GEAR OEM 10CC hydraulic pump transaxle transmission
Swash plate 2513015 HYDRO GEAR OEM 10CC hydraulic pump transaxle transmission
$60.00
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Block kit 72228 7 PISTON 8CC HYDRO GEAR HYDRAULIC OEM transaxle pump transmissio
Block kit 72228 7 PISTON 8CC HYDRO GEAR HYDRAULIC OEM transaxle pump transmissio
$33.90
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Gear 50420 spur 60T spline ID HYDRO GEAR hydraulic pump transaxle transmission
Gear 50420 spur 60T spline ID HYDRO GEAR hydraulic pump transaxle transmission
$39.29
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RTN std med 71034 HYDRO GEAR hydraulic pump transaxle transmission
RTN std med 71034 HYDRO GEAR hydraulic pump transaxle transmission
$33.16
Time Remaining: 2d 12h 46m
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Axle shaft kit 71570 HYDRO GEAR hydraulic pump transmission transaxle
Axle shaft kit 71570 HYDRO GEAR hydraulic pump transmission transaxle
$78.34
Time Remaining: 2d 12h 46m
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Brake arm 71069 71070 HYDRO GEAR left and right hydraulic pump transaxle
Brake arm 71069 71070 HYDRO GEAR left and right hydraulic pump transaxle
$38.89
Time Remaining: 2d 12h 46m
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BALL BEARING 50740 2EA HYDRO GEAR HYDRAULIC pump transaxle transmission
BALL BEARING 50740 2EA HYDRO GEAR HYDRAULIC pump transaxle transmission
$29.89
Time Remaining: 2d 12h 46m
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End cap 72169 TOP CASE DRNPR HYDRO GEAR HYDRAULIC transaxle pump transmission
End cap 72169 TOP CASE DRNPR HYDRO GEAR HYDRAULIC transaxle pump transmission
$190.00
Time Remaining: 2d 12h 46m
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Breather assembly 50042 HYDRO GEAR HYDRAULIC OEM pump transaxle transmission
Breather assembly 50042 HYDRO GEAR HYDRAULIC OEM pump transaxle transmission
$39.29
Time Remaining: 2d 12h 46m
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Block cylinder 71579 16CC HYDRO GEAR hydraulic pump transaxle transmission
Block cylinder 71579 16CC HYDRO GEAR hydraulic pump transaxle transmission
$72.29
Time Remaining: 2d 12h 46m
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Bypass actuater 2003555 HYDRO GEAR HYDRAULIC pump transaxle transmission
Bypass actuater 2003555 HYDRO GEAR HYDRAULIC pump transaxle transmission
$23.00
Time Remaining: 2d 12h 46m
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End cover 50891RM 1ZT RAW M HYDRO GEAR HYDRAULIC OEM pump transaxle transmission
End cover 50891RM 1ZT RAW M HYDRO GEAR HYDRAULIC OEM pump transaxle transmission
$34.16
Time Remaining: 2d 12h 46m
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Auxillary pump BPD 10 70505 SPECIAL ORDER HYDRO GEAR HYDRAULIC transaxle
Auxillary pump BPD 10 70505 SPECIAL ORDER HYDRO GEAR HYDRAULIC transaxle
$199.00
Time Remaining: 2d 12h 46m
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PULLEY 50066 210 3000 HYDRO GEAR hydraulic pump transaxle transmission
PULLEY 50066 210 3000 HYDRO GEAR hydraulic pump transaxle transmission
$30.00
Time Remaining: 2d 12h 46m
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Filter 70380 manifold HYDRO GEAR HYDRAULIC pump transaxle transmission
Filter 70380 manifold HYDRO GEAR HYDRAULIC pump transaxle transmission
$50.00
Time Remaining: 2d 12h 46m
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Block cylinder 2510014 BDU 21P HYDRO GEAR HYDRAULIC pump transaxle transmission
Block cylinder 2510014 BDU 21P HYDRO GEAR HYDRAULIC pump transaxle transmission
$112.00
Time Remaining: 2d 12h 46m
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Bypass valve 2513030 2EA HYDRO GEAR hydraulic pump transaxle transmission
Bypass valve 2513030 2EA HYDRO GEAR hydraulic pump transaxle transmission
$50.00
Time Remaining: 2d 12h 46m
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Control arm 70899 HYDRO GEAR hydraulic pump transaxle transmission
Control arm 70899 HYDRO GEAR hydraulic pump transaxle transmission
$29.69
Time Remaining: 2d 12h 46m
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Charge relief 70403 KIT 2 EA HYDRO GEAR OEM hydraulic pump transaxle
Charge relief 70403 KIT 2 EA HYDRO GEAR OEM hydraulic pump transaxle
$18.00
Time Remaining: 2d 12h 46m
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Cylinder block 72158 16CC PR S HYDRO GEAR hydraulic pump transaxle transmission
Cylinder block 72158 16CC PR S HYDRO GEAR hydraulic pump transaxle transmission
$70.29
Time Remaining: 2d 12h 46m
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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
$10.00
Time Remaining: 2d 12h 46m
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Housing 71256 HYDRO GEAR hydraulic pump transmission transaxle OEM
Housing 71256 HYDRO GEAR hydraulic pump transmission transaxle OEM
$82.39
Time Remaining: 2d 12h 46m
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Valve check 2510027 KIT HYDRO GEAR Hydraulic pump transaxle transmission
Valve check 2510027 KIT HYDRO GEAR Hydraulic pump transaxle transmission
$26.88
Time Remaining: 2d 12h 46m
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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: 2d 17h 24m
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Toro Greensmaster III Hydraulic Pump Greens Mower 3000
Toro Greensmaster III Hydraulic Pump Greens Mower 3000
$174.99
Time Remaining: 2d 18h 2m
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INGERSOLL 4120 HYDRAULIC POWER STEERING PUMP 4118 4116 4118D
INGERSOLL 4120 HYDRAULIC POWER STEERING PUMP 4118 4116 4118D
$429.99
Time Remaining: 2d 21h 18m
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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
$445.00
Time Remaining: 3d 6h 46m
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CASE 224 220 222 HYDRAULIC PUMP
CASE 224 220 222 HYDRAULIC PUMP
$88.00
Time Remaining: 3d 9h 3m
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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
Time Remaining: 3d 12h 23m
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Bradley Cliplift Lawn Mower Jack Lift MJ3000 Hydraulic Foot Pump
Bradley Cliplift Lawn Mower Jack Lift MJ3000 Hydraulic Foot Pump
$149.99
Time Remaining: 3d 14h 46m
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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: 3d 17h 52m
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Transmission 618 0389A 310 0510 Hydro Gear hydraulic pump transaxle
Transmission 618 0389A 310 0510 Hydro Gear hydraulic pump transaxle
$547.67
Time Remaining: 3d 19h 48m
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Transmission ZC DMBB 4DDC 2PPX EZT 71650 IHT Hydraulic Hydro Gear transaxle pu
Transmission ZC DMBB 4DDC 2PPX EZT 71650 IHT Hydraulic Hydro Gear transaxle pu
$537.00
Time Remaining: 3d 19h 52m
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Pump PG 1GCA DY1X XXXX BDP 10A 445 Hydro Gear hydraulic transaxle transmission
Pump PG 1GCA DY1X XXXX BDP 10A 445 Hydro Gear hydraulic transaxle transmission
$472.72
Time Remaining: 3d 19h 52m
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Transmission 166768 TRANSAXLE 314 0510 IHT Hydraulic pump Hydro Gear OEM
Transmission 166768 TRANSAXLE 314 0510 IHT Hydraulic pump Hydro Gear OEM
$563.92
Time Remaining: 3d 19h 52m
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FlowTest kit 70661 36INCH HYDRO GEAR HYDRAULIC BDP pump transaxle transmission
FlowTest kit 70661 36INCH HYDRO GEAR HYDRAULIC BDP pump transaxle transmission
$693.24
Time Remaining: 3d 19h 52m
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Pump PW 1LQC EY1X XXXX 21CC BDP 21L 408 VARIABLE HYDRO GEAR HYDRAULIC transaxle
Pump PW 1LQC EY1X XXXX 21CC BDP 21L 408 VARIABLE HYDRO GEAR HYDRAULIC transaxle
$466.02
Time Remaining: 3d 19h 52m
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Lip seal 70541 Hydro Gear 4EA hydraulic pump transaxle transmission
Lip seal 70541 Hydro Gear 4EA hydraulic pump transaxle transmission
$33.18
Time Remaining: 3d 21h 18m
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Lip seal 51280 3EA 25X52X7 Hydro Gear hydraulic pump transaxle transmission
Lip seal 51280 3EA 25X52X7 Hydro Gear hydraulic pump transaxle transmission
$21.18
Time Remaining: 3d 21h 18m
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Lip seal 51140 4EA 18X32X7 Hydro Gear hydraulic pump transaxle transmission
Lip seal 51140 4EA 18X32X7 Hydro Gear hydraulic pump transaxle transmission
$24.00
Time Remaining: 3d 21h 18m
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O ring 52250 21544005 SEAL 10EA Hydro Gear hydraulic pump transaxle transmission
O ring 52250 21544005 SEAL 10EA Hydro Gear hydraulic pump transaxle transmission
$17.83
Time Remaining: 3d 21h 18m
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Lip seal 53699 4 EA TC4 10 X 206 Hydro Gear hydraulic pump transaxle
Lip seal 53699 4 EA TC4 10 X 206 Hydro Gear hydraulic pump transaxle
$33.08
Time Remaining: 3d 21h 18m
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Seal kit 70626 2 HYDRO GEAR HGM P SERIES HYDRAULIC pump transaxle transmission
Seal kit 70626 2 HYDRO GEAR HGM P SERIES HYDRAULIC pump transaxle transmission
$81.47
Time Remaining: 3d 21h 18m
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Gasket 2003067 2EA HYDRO GEAR HOUSING HYDRAULIC pump transaxle transmission
Gasket 2003067 2EA HYDRO GEAR HOUSING HYDRAULIC pump transaxle transmission
$18.18
Time Remaining: 3d 21h 23m
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O ring 54022 5EA Housing round Hydro Gear hydraulic pump transaxle
O ring 54022 5EA Housing round Hydro Gear hydraulic pump transaxle
$30.00
Time Remaining: 3d 21h 23m
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Seal kit 71554 HYDRO GEAR OEM HYDRAULIC pump transaxle transmission
Seal kit 71554 HYDRO GEAR OEM HYDRAULIC pump transaxle transmission
$21.72
Time Remaining: 3d 21h 23m
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O ring kit 70110 08608300 Hydro Gear 2EA hydraulic pump transaxle transmission
O ring kit 70110 08608300 Hydro Gear 2EA hydraulic pump transaxle transmission
$38.18
Time Remaining: 3d 21h 23m
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O ring seal 9004101 1340 BDP 10EA Hydro Gear hydraulic pump transaxle
O ring seal 9004101 1340 BDP 10EA Hydro Gear hydraulic pump transaxle
$19.18
Time Remaining: 3d 21h 23m
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Seal 70531 OVERHAUL KIT HYDRO GEAR HYDRAULIC pump transaxle transmission
Seal 70531 OVERHAUL KIT HYDRO GEAR HYDRAULIC pump transaxle transmission
$43.00
Time Remaining: 3d 21h 23m
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Lip seal 53901 45076 4ea HYDRO GEAR hydraulic pump transaxle transmission
Lip seal 53901 45076 4ea HYDRO GEAR hydraulic pump transaxle transmission
$32.18
Time Remaining: 3d 21h 23m
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Seal kit 2513043 2EA HYDRO GEAR OEM BDP 10L hydraulic pump transaxle
Seal kit 2513043 2EA HYDRO GEAR OEM BDP 10L hydraulic pump transaxle
$21.18
Time Remaining: 3d 21h 23m
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Seal kit 71410 21543999 HYDRO GEAR hydraulic pump transaxle transmission
Seal kit 71410 21543999 HYDRO GEAR hydraulic pump transaxle transmission
$40.00
Time Remaining: 3d 21h 23m
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Overhaul seal 70740 00181065 Hydro Gear BDP 16A hydraulic pump transaxle
Overhaul seal 70740 00181065 Hydro Gear BDP 16A hydraulic pump transaxle
$39.89
Time Remaining: 3d 21h 23m
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Gerotor seal 72291 HYDRO GEAR HYDRAULIC PUMP transaxle transmiission
Gerotor seal 72291 HYDRO GEAR HYDRAULIC PUMP transaxle transmiission
$18.18
Time Remaining: 3d 21h 23m
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Lip seal 45074 10X25X7 4EA HYDRO GEAR HYDRAULIC pump transaxle transmission OEM
Lip seal 45074 10X25X7 4EA HYDRO GEAR HYDRAULIC pump transaxle transmission OEM
$14.18
Time Remaining: 3d 21h 23m
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Seal kit 70602 2 HYDRO GEAR HYDRAULIC pump transaxle transmission
Seal kit 70602 2 HYDRO GEAR HYDRAULIC pump transaxle transmission
$99.99
Time Remaining: 3d 21h 23m
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Lip seal 50941 21543772 4EA Hydro Gear hydraulic pump transaxle transmission
Lip seal 50941 21543772 4EA Hydro Gear hydraulic pump transaxle transmission
$23.18
Time Remaining: 3d 21h 23m
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Seal kit 71976 ZT 3400 HYDRO GEAR HYDRAULIC pump transaxle transmission
Seal kit 71976 ZT 3400 HYDRO GEAR HYDRAULIC pump transaxle transmission
$39.99
Time Remaining: 3d 21h 23m
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Gasket 50223 HOUSING 1EA HYDRO GEAR hydraulic pump transaxle NLA
Gasket 50223 HOUSING 1EA HYDRO GEAR hydraulic pump transaxle NLA
$22.28
Time Remaining: 3d 21h 23m
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Seal overhaul 2513013 HYDRO GEAR OEM BDU 10 hydraulic pump transaxle
Seal overhaul 2513013 HYDRO GEAR OEM BDU 10 hydraulic pump transaxle
$18.00
Time Remaining: 3d 21h 23m
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