✖

Home

Stock Categories

Technical Articles

Danfoss Shut-off valves

Rexroth Solenoid directional valve

Rexroth PRESSURE RELIEF VALVE

Home>Products>Yuken Piston pump>Yuken A90-L-R-01-B-S-60 Piston pump

Yuken A90-L-R-01-B-S-60 MODELS

Need a CAD or 3D Model?

Contact Now WhatsApp Be Our Agent

Yuken A90-L-R-01-B-S-60 Piston pump

Name: Yuken A90-L-R-01-B-S-60 Piston pump
Brand: Yuken
SKU: A90-L-R-01-B-S-60
Rating: 4.9 (5 reviews)

Yuken A90-L-R-01-B-S-60 SPECIFICATIONS

Offer High 1 Piece Solid Housing Configuration Quality Brand Yuken A90-L-R-01-B-S-60 Piston pump .Contact Us Online INS-IP-212L Insert Part Number to Get Best UKL Hydraulic Components Co., Ltd. Quote.
Brand Name:Yuken
Model Number:
A90-L-R-01-B-S-60
Weight:118.0 LB
Minor Diameter:Flange Mount
Minor Diameter [Min:Right Hand (CW)
Mounting Flange:4535VQ60A25-1CC20
Shaft Key:4
Cover End Pressure [Max:Flange
GPM @ 1,800 rpm, Cover End:5/16 in
Controlled Flow Rate:Standard Pilot

UKL Hydraulic Components Co., Ltd.

UKL Hydraulic Components Co., Ltd.China

UKL Hydraulic Components Co., Ltd.2020-07-10 09:46:19
Welcome to my shop! Glad to serve you! Please send your question!

Interested In: Price Inspection Certificate Product Specifications Company Profile

Yuken A90-L-R-01-B-S-60 Piston pump Products and services

Shaft Seal Type:1.25 in
Major Diameter [Max:Straight w/ Key
Pilot Type:4535VQ
Pump Series:1 15/16 in
Displacement Cover End (cu in/revolution):Double
Relief Valve Setting:Buna-N
Shaft End Pressure [Max:2200
Major Diameter [Min:N/A
Shaft End Flow @ RPM:SAE C, 2 Bolt
Port Orientation - Shaft End:Single Shaft Seal
Port Type:N/A
Integral Valve Configuration:2200
Displacement Shaft End (cu in/revolution):11.8
Spline Description:N/A
Mounting:25 gal/min @ 1200 rpm, 37.5 gal/min @ 1800 rpm
Port Orientation - Cover End:N/A
Shaft End RPM [Max:N/A
Max. RPM [Max:N/A
Manufacturer Part No.:N/A
Model No.:N/A
Pressure Port Size, Cover End:60 gal/min @ 1200 rpm, 90 gal/min @ 1800 rpm
Rotation:4535VQ60A25-1CC20
Shaft Type:3000
Port Size:2500
Cover End Flow @ RPM:37.5
Pressure Port Size, Shaft End:90
Shaft Dia.:w/o Integral Valves
Seal Material:Outlet Inline w/Inlet
GPM @ 1,800 rpm, Shaft End:Outlet Inline w/Inlet
Cover End RPM [Max:1 1/4 in Flange
Minor Diameter [Max:1 1/2 in Flange
Shaft Length:5

Yuken A90-L-R-01-B-S-60 Yuken A90-L-R-01-B-S-60 Piston pump‎ Specifications ‎

Yuken A145-F-R-04-H-A-S-A-60366 Piston pump	Shaft Key:118.0 LB; Weight:Flange Mount; Mounting Flange:Right Hand (CW); Minor Diameter [Max:4535VQ60A25-1CC20; Manufacturer Part No.:4; Minor Diameter [Min:Flange; Model No.:5/16 in; Displacement Shaft End (cu in/revolution):Standard Pilot; Major Diameter [Max:1.25 in; Pressure Port Size, Cover End:Straight w/ Key; Pump Series:4535VQ; Shaft Length:1 15/16 in; Configuration:Double; Seal Material:Buna-N; Max. RPM [Max:2200; Minor Diameter:N/A; Mounting Flange:SAE C, 2 Bolt; Shaft Seal Type:Single Shaft Seal; Spline Description:N/A; Cover End RPM [Max:2200; Shaft End RPM [Max:2200; Controlled Flow Rate:N/A; Cover End Flow @ RPM:25 gal/min @ 1200 rpm, 37.5 gal/min @ 1800 rpm; Major Diameter [Max:N/A; Major Diameter [Min:N/A; Minor Diameter [Max:N/A; Minor Diameter [Min:N/A; Relief Valve Setting:N/A; Shaft End Flow @ RPM:60 gal/min @ 1200 rpm, 90 gal/min @ 1800 rpm; Manufacturer Part No.:4535VQ60A25-1CC20; Cover End Pressure [Max:3000; Shaft End Pressure [Max:2500; GPM @ 1,800 rpm, Cover End:37.5; GPM @ 1,800 rpm, Shaft End:90; Integral Valve Configuration:w/o Integral Valves; Port Orientation - Cover End:Outlet Inline w/Inlet; Port Orientation - Shaft End:Outlet Inline w/Inlet; Pressure Port Size, Cover End:1 1/4 in Flange; Pressure Port Size, Shaft End:1 1/2 in Flange; Displacement Cover End (cu in/revolution):5; Displacement Shaft End (cu in/revolution):11.8;
Yuken A100-FR04HS-10 Piston pump	Shaft End Flow @ RPM:118.0 LB; Shaft Type:Flange Mount; Rotation:Right Hand (CW); Port Orientation - Shaft End:4535VQ60A25-1CC20; Manufacturer Part No.:4; Shaft Key:Flange; Minor Diameter:5/16 in; Shaft End Pressure [Max:Standard Pilot; Minor Diameter [Min:1.25 in; Pilot Type:Straight w/ Key; Pump Series:4535VQ; Shaft Length:1 15/16 in; Configuration:Double; Seal Material:Buna-N; Max. RPM [Max:2200; Minor Diameter:N/A; Mounting Flange:SAE C, 2 Bolt; Shaft Seal Type:Single Shaft Seal; Spline Description:N/A; Cover End RPM [Max:2200; Shaft End RPM [Max:2200; Controlled Flow Rate:N/A; Cover End Flow @ RPM:25 gal/min @ 1200 rpm, 37.5 gal/min @ 1800 rpm; Major Diameter [Max:N/A; Major Diameter [Min:N/A; Minor Diameter [Max:N/A; Minor Diameter [Min:N/A; Relief Valve Setting:N/A; Shaft End Flow @ RPM:60 gal/min @ 1200 rpm, 90 gal/min @ 1800 rpm; Manufacturer Part No.:4535VQ60A25-1CC20; Cover End Pressure [Max:3000; Shaft End Pressure [Max:2500; GPM @ 1,800 rpm, Cover End:37.5; GPM @ 1,800 rpm, Shaft End:90; Integral Valve Configuration:w/o Integral Valves; Port Orientation - Cover End:Outlet Inline w/Inlet; Port Orientation - Shaft End:Outlet Inline w/Inlet; Pressure Port Size, Cover End:1 1/4 in Flange; Pressure Port Size, Shaft End:1 1/2 in Flange; Displacement Cover End (cu in/revolution):5; Displacement Shaft End (cu in/revolution):11.8;
Yuken A145-L-R-04-H-A-S-A-60366 Piston pump	Displacement Cover End (cu in/revolution):118.0 LB; Pressure Port Size, Cover End:Flange Mount; Pilot Type:Right Hand (CW); Shaft Seal Type:4535VQ60A25-1CC20; Relief Valve Setting:4; Port Type:Flange; Manufacturer Part No.:5/16 in; Cover End RPM [Max:Standard Pilot; Shaft Type:1.25 in; Pump Series:Straight w/ Key; Pump Series:4535VQ; Shaft Length:1 15/16 in; Configuration:Double; Seal Material:Buna-N; Max. RPM [Max:2200; Minor Diameter:N/A; Mounting Flange:SAE C, 2 Bolt; Shaft Seal Type:Single Shaft Seal; Spline Description:N/A; Cover End RPM [Max:2200; Shaft End RPM [Max:2200; Controlled Flow Rate:N/A; Cover End Flow @ RPM:25 gal/min @ 1200 rpm, 37.5 gal/min @ 1800 rpm; Major Diameter [Max:N/A; Major Diameter [Min:N/A; Minor Diameter [Max:N/A; Minor Diameter [Min:N/A; Relief Valve Setting:N/A; Shaft End Flow @ RPM:60 gal/min @ 1200 rpm, 90 gal/min @ 1800 rpm; Manufacturer Part No.:4535VQ60A25-1CC20; Cover End Pressure [Max:3000; Shaft End Pressure [Max:2500; GPM @ 1,800 rpm, Cover End:37.5; GPM @ 1,800 rpm, Shaft End:90; Integral Valve Configuration:w/o Integral Valves; Port Orientation - Cover End:Outlet Inline w/Inlet; Port Orientation - Shaft End:Outlet Inline w/Inlet; Pressure Port Size, Cover End:1 1/4 in Flange; Pressure Port Size, Shaft End:1 1/2 in Flange; Displacement Cover End (cu in/revolution):5; Displacement Shaft End (cu in/revolution):11.8;
Yuken A100-F-R-04-H-K-A-3266 Piston pump	GPM @ 1,800 rpm, Cover End:118.0 LB; Spline Description:Flange Mount; Mounting:Right Hand (CW); Model No.:4535VQ60A25-1CC20; Minor Diameter:4; Manufacturer Part No.:Flange; Cover End Flow @ RPM:5/16 in; Minor Diameter [Max:Standard Pilot; Cover End Pressure [Max:1.25 in; Major Diameter [Max:Straight w/ Key; Pump Series:4535VQ; Shaft Length:1 15/16 in; Configuration:Double; Seal Material:Buna-N; Max. RPM [Max:2200; Minor Diameter:N/A; Mounting Flange:SAE C, 2 Bolt; Shaft Seal Type:Single Shaft Seal; Spline Description:N/A; Cover End RPM [Max:2200; Shaft End RPM [Max:2200; Controlled Flow Rate:N/A; Cover End Flow @ RPM:25 gal/min @ 1200 rpm, 37.5 gal/min @ 1800 rpm; Major Diameter [Max:N/A; Major Diameter [Min:N/A; Minor Diameter [Max:N/A; Minor Diameter [Min:N/A; Relief Valve Setting:N/A; Shaft End Flow @ RPM:60 gal/min @ 1200 rpm, 90 gal/min @ 1800 rpm; Manufacturer Part No.:4535VQ60A25-1CC20; Cover End Pressure [Max:3000; Shaft End Pressure [Max:2500; GPM @ 1,800 rpm, Cover End:37.5; GPM @ 1,800 rpm, Shaft End:90; Integral Valve Configuration:w/o Integral Valves; Port Orientation - Cover End:Outlet Inline w/Inlet; Port Orientation - Shaft End:Outlet Inline w/Inlet; Pressure Port Size, Cover End:1 1/4 in Flange; Pressure Port Size, Shaft End:1 1/2 in Flange; Displacement Cover End (cu in/revolution):5; Displacement Shaft End (cu in/revolution):11.8;
Yuken A56-L-R-04-H-K-A-3266 Piston pump	Cover End RPM [Max:118.0 LB; Minor Diameter [Min:Flange Mount; Shaft Length:Right Hand (CW); Seal Material:4535VQ60A25-1CC20; Manufacturer Part No.:4; Minor Diameter:Flange; Major Diameter [Max:5/16 in; Shaft Seal Type:Standard Pilot; Shaft End Flow @ RPM:1.25 in; Pump Series:Straight w/ Key; Pump Series:4535VQ; Shaft Length:1 15/16 in; Configuration:Double; Seal Material:Buna-N; Max. RPM [Max:2200; Minor Diameter:N/A; Mounting Flange:SAE C, 2 Bolt; Shaft Seal Type:Single Shaft Seal; Spline Description:N/A; Cover End RPM [Max:2200; Shaft End RPM [Max:2200; Controlled Flow Rate:N/A; Cover End Flow @ RPM:25 gal/min @ 1200 rpm, 37.5 gal/min @ 1800 rpm; Major Diameter [Max:N/A; Major Diameter [Min:N/A; Minor Diameter [Max:N/A; Minor Diameter [Min:N/A; Relief Valve Setting:N/A; Shaft End Flow @ RPM:60 gal/min @ 1200 rpm, 90 gal/min @ 1800 rpm; Manufacturer Part No.:4535VQ60A25-1CC20; Cover End Pressure [Max:3000; Shaft End Pressure [Max:2500; GPM @ 1,800 rpm, Cover End:37.5; GPM @ 1,800 rpm, Shaft End:90; Integral Valve Configuration:w/o Integral Valves; Port Orientation - Cover End:Outlet Inline w/Inlet; Port Orientation - Shaft End:Outlet Inline w/Inlet; Pressure Port Size, Cover End:1 1/4 in Flange; Pressure Port Size, Shaft End:1 1/2 in Flange; Displacement Cover End (cu in/revolution):5; Displacement Shaft End (cu in/revolution):11.8;
Yuken A56-L-R-04-C-K-A-3266 Piston pump	Cover End RPM [Max:118.0 LB; Major Diameter [Min:Flange Mount; Cover End Pressure [Max:Right Hand (CW); GPM @ 1,800 rpm, Shaft End:4535VQ60A25-1CC20; GPM @ 1,800 rpm, Cover End:4; Relief Valve Setting:Flange; Weight:5/16 in; Pressure Port Size, Shaft End:Standard Pilot; Pilot Type:1.25 in; Displacement Cover End (cu in/revolution):Straight w/ Key; Pump Series:4535VQ; Shaft Length:1 15/16 in; Configuration:Double; Seal Material:Buna-N; Max. RPM [Max:2200; Minor Diameter:N/A; Mounting Flange:SAE C, 2 Bolt; Shaft Seal Type:Single Shaft Seal; Spline Description:N/A; Cover End RPM [Max:2200; Shaft End RPM [Max:2200; Controlled Flow Rate:N/A; Cover End Flow @ RPM:25 gal/min @ 1200 rpm, 37.5 gal/min @ 1800 rpm; Major Diameter [Max:N/A; Major Diameter [Min:N/A; Minor Diameter [Max:N/A; Minor Diameter [Min:N/A; Relief Valve Setting:N/A; Shaft End Flow @ RPM:60 gal/min @ 1200 rpm, 90 gal/min @ 1800 rpm; Manufacturer Part No.:4535VQ60A25-1CC20; Cover End Pressure [Max:3000; Shaft End Pressure [Max:2500; GPM @ 1,800 rpm, Cover End:37.5; GPM @ 1,800 rpm, Shaft End:90; Integral Valve Configuration:w/o Integral Valves; Port Orientation - Cover End:Outlet Inline w/Inlet; Port Orientation - Shaft End:Outlet Inline w/Inlet; Pressure Port Size, Cover End:1 1/4 in Flange; Pressure Port Size, Shaft End:1 1/2 in Flange; Displacement Cover End (cu in/revolution):5; Displacement Shaft End (cu in/revolution):11.8;
Yuken A145-FR04HS-60 Piston pump	Major Diameter [Max:118.0 LB; Relief Valve Setting:Flange Mount; Port Orientation - Shaft End:Right Hand (CW); Cover End Flow @ RPM:4535VQ60A25-1CC20; Max. RPM [Max:4; Displacement Cover End (cu in/revolution):Flange; Rotation:5/16 in; GPM @ 1,800 rpm, Shaft End:Standard Pilot; Pilot Type:1.25 in; Pressure Port Size, Cover End:Straight w/ Key; Pump Series:4535VQ; Shaft Length:1 15/16 in; Configuration:Double; Seal Material:Buna-N; Max. RPM [Max:2200; Minor Diameter:N/A; Mounting Flange:SAE C, 2 Bolt; Shaft Seal Type:Single Shaft Seal; Spline Description:N/A; Cover End RPM [Max:2200; Shaft End RPM [Max:2200; Controlled Flow Rate:N/A; Cover End Flow @ RPM:25 gal/min @ 1200 rpm, 37.5 gal/min @ 1800 rpm; Major Diameter [Max:N/A; Major Diameter [Min:N/A; Minor Diameter [Max:N/A; Minor Diameter [Min:N/A; Relief Valve Setting:N/A; Shaft End Flow @ RPM:60 gal/min @ 1200 rpm, 90 gal/min @ 1800 rpm; Manufacturer Part No.:4535VQ60A25-1CC20; Cover End Pressure [Max:3000; Shaft End Pressure [Max:2500; GPM @ 1,800 rpm, Cover End:37.5; GPM @ 1,800 rpm, Shaft End:90; Integral Valve Configuration:w/o Integral Valves; Port Orientation - Cover End:Outlet Inline w/Inlet; Port Orientation - Shaft End:Outlet Inline w/Inlet; Pressure Port Size, Cover End:1 1/4 in Flange; Pressure Port Size, Shaft End:1 1/2 in Flange; Displacement Cover End (cu in/revolution):5; Displacement Shaft End (cu in/revolution):11.8;
Yuken A100-F-R-04-B-K-A-3266 Piston pump	Displacement Shaft End (cu in/revolution):118.0 LB; Shaft Length:Flange Mount; Minor Diameter [Min:Right Hand (CW); Shaft Key:4535VQ60A25-1CC20; GPM @ 1,800 rpm, Cover End:4; Shaft Type:Flange; Relief Valve Setting:5/16 in; Weight:Standard Pilot; Port Type:1.25 in; Minor Diameter [Max:Straight w/ Key; Pump Series:4535VQ; Shaft Length:1 15/16 in; Configuration:Double; Seal Material:Buna-N; Max. RPM [Max:2200; Minor Diameter:N/A; Mounting Flange:SAE C, 2 Bolt; Shaft Seal Type:Single Shaft Seal; Spline Description:N/A; Cover End RPM [Max:2200; Shaft End RPM [Max:2200; Controlled Flow Rate:N/A; Cover End Flow @ RPM:25 gal/min @ 1200 rpm, 37.5 gal/min @ 1800 rpm; Major Diameter [Max:N/A; Major Diameter [Min:N/A; Minor Diameter [Max:N/A; Minor Diameter [Min:N/A; Relief Valve Setting:N/A; Shaft End Flow @ RPM:60 gal/min @ 1200 rpm, 90 gal/min @ 1800 rpm; Manufacturer Part No.:4535VQ60A25-1CC20; Cover End Pressure [Max:3000; Shaft End Pressure [Max:2500; GPM @ 1,800 rpm, Cover End:37.5; GPM @ 1,800 rpm, Shaft End:90; Integral Valve Configuration:w/o Integral Valves; Port Orientation - Cover End:Outlet Inline w/Inlet; Port Orientation - Shaft End:Outlet Inline w/Inlet; Pressure Port Size, Cover End:1 1/4 in Flange; Pressure Port Size, Shaft End:1 1/2 in Flange; Displacement Cover End (cu in/revolution):5; Displacement Shaft End (cu in/revolution):11.8;
Yuken A56-L-R-04-B-K-A-3266 Piston pump	Shaft End Flow @ RPM:118.0 LB; Weight:Flange Mount; Pressure Port Size, Shaft End:Right Hand (CW); Shaft End Pressure [Max:4535VQ60A25-1CC20; Model No.:4; Displacement Cover End (cu in/revolution):Flange; Integral Valve Configuration:5/16 in; Mounting Flange:Standard Pilot; Minor Diameter [Max:1.25 in; Port Orientation - Shaft End:Straight w/ Key; Pump Series:4535VQ; Shaft Length:1 15/16 in; Configuration:Double; Seal Material:Buna-N; Max. RPM [Max:2200; Minor Diameter:N/A; Mounting Flange:SAE C, 2 Bolt; Shaft Seal Type:Single Shaft Seal; Spline Description:N/A; Cover End RPM [Max:2200; Shaft End RPM [Max:2200; Controlled Flow Rate:N/A; Cover End Flow @ RPM:25 gal/min @ 1200 rpm, 37.5 gal/min @ 1800 rpm; Major Diameter [Max:N/A; Major Diameter [Min:N/A; Minor Diameter [Max:N/A; Minor Diameter [Min:N/A; Relief Valve Setting:N/A; Shaft End Flow @ RPM:60 gal/min @ 1200 rpm, 90 gal/min @ 1800 rpm; Manufacturer Part No.:4535VQ60A25-1CC20; Cover End Pressure [Max:3000; Shaft End Pressure [Max:2500; GPM @ 1,800 rpm, Cover End:37.5; GPM @ 1,800 rpm, Shaft End:90; Integral Valve Configuration:w/o Integral Valves; Port Orientation - Cover End:Outlet Inline w/Inlet; Port Orientation - Shaft End:Outlet Inline w/Inlet; Pressure Port Size, Cover End:1 1/4 in Flange; Pressure Port Size, Shaft End:1 1/2 in Flange; Displacement Cover End (cu in/revolution):5; Displacement Shaft End (cu in/revolution):11.8;
Yuken A100-F-R-04-C-K-A-3266 Piston pump	Minor Diameter:118.0 LB; Rotation:Flange Mount; Minor Diameter [Min:Right Hand (CW); Pressure Port Size, Cover End:4535VQ60A25-1CC20; Pressure Port Size, Shaft End:4; Cover End RPM [Max:Flange; Cover End Flow @ RPM:5/16 in; Mounting:Standard Pilot; Max. RPM [Max:1.25 in; Manufacturer Part No.:Straight w/ Key; Pump Series:4535VQ; Shaft Length:1 15/16 in; Configuration:Double; Seal Material:Buna-N; Max. RPM [Max:2200; Minor Diameter:N/A; Mounting Flange:SAE C, 2 Bolt; Shaft Seal Type:Single Shaft Seal; Spline Description:N/A; Cover End RPM [Max:2200; Shaft End RPM [Max:2200; Controlled Flow Rate:N/A; Cover End Flow @ RPM:25 gal/min @ 1200 rpm, 37.5 gal/min @ 1800 rpm; Major Diameter [Max:N/A; Major Diameter [Min:N/A; Minor Diameter [Max:N/A; Minor Diameter [Min:N/A; Relief Valve Setting:N/A; Shaft End Flow @ RPM:60 gal/min @ 1200 rpm, 90 gal/min @ 1800 rpm; Manufacturer Part No.:4535VQ60A25-1CC20; Cover End Pressure [Max:3000; Shaft End Pressure [Max:2500; GPM @ 1,800 rpm, Cover End:37.5; GPM @ 1,800 rpm, Shaft End:90; Integral Valve Configuration:w/o Integral Valves; Port Orientation - Cover End:Outlet Inline w/Inlet; Port Orientation - Shaft End:Outlet Inline w/Inlet; Pressure Port Size, Cover End:1 1/4 in Flange; Pressure Port Size, Shaft End:1 1/2 in Flange; Displacement Cover End (cu in/revolution):5; Displacement Shaft End (cu in/revolution):11.8;

“AR” Series Variable Displacement Piston Pumps - Yuken by

Based on Yuken technology and engineering, the "A" series pump has a reputation for its quiet operation and high efficiency. Compact and Lightweight; A compact

Yuken piston pumps A series, AR series, A3H series, ARL1

Yuken AR series Variable Displacement Piston Pumps. Single Pump, Pressure Compensator Type. A compact aluminum body design for a high ratio of power-to-

“A” Series Variable Displacement Piston Pumps - Yuken by

“A” Series Variable Displacement Piston Pumps. A variety of control methods are supported; Ten types of unique control methods are available which integrate

Product Categories Piston Pumps - Yuken by ALA Industries

Yuken offers low noise/high efficiency, swash plate type variable displacement piston pumps. These pumps have been developed by Yuken's leading hydraulic

Variable Displacement Piston Pumps - A Series | Yuken

Yuken offers low noise/high efficiency, swash plate type variable piston pumps, these have been developed by Yuken's leading hydraulic engineers and provide

Yuken A90-L-R-01-B-S-60 Piston pump Video

Contact Us

UKL Hydraulic Components Co., Ltd.: AddressVia Giotto, 6, 10080 San Benigno Cavanese, Torino, Italy

Send Now

Yuken A90-L-R-01-B-S-60 Technical Articles

Can you use a hydraulic pump as a motor?

Hydraulic pump in place of a hydraulic motor? | My TractorOct 13, 2011 — However, most hydraulic pumps cannot be used as hydraulic motors because they cannot be backdriven. Also, a hydraulic motor is usually designed for the working pressure at...

How do I check the hydraulic pressure on my excavator?

What to Check if Your Hydraulic System is not Working | MACDec 16, 2019 — The schematics provide valuable information about flow and pressure in the system. Common Problems. There are certain problems commonly Mobile hydraulics...

How does a hydraulic pump work?

Hydraulic Pumps | Parts and Components | DTA HydraulicsWhat is a Hydraulic Pump and Why do You Need It? You can use hydraulic machines - equipped with a pump - to do different types of work such as lift, lower, Hydraulic Pumps | HowStuffWorks...