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What Are Hydraulic Pumps Used For?

While hydraulic pumps are commonly used in heavy construction equipment, manufacturing machinery, and other such systems, they are also a part of everyone’s daily lives in one way or another. Hydraulic gear pumps, piston pumps, and systems can be found in numerous devices which make our lives easier, including:

  • Braking Systems in Vehicles
  • Aeroplanes
  • Theme Park rides
  • Elevators
  • Escalators
  • Auto Repair Lifts
  • Vehicle Jacks
  • Adjustable Height Chairs
  • Filling Station Fuel Pumps
  • Bath lifts
  • Snowploughs
  • Robotics
  • Automated Manufacturing Machines
  • Trains
  • Boats and Ships
  • Tanks and Armoured vehicles
  • Fork Lifts
  • Dump Trucks
  • Cranes
  • Rubbish lorries / Trash Collection Trucks
  • Agricultural Tractors and Implements
  • Excavators
  • Backhoes
  • Mowers
  • Hedge and Verge Cutters
  • Forestry equipment
  • Lorry and truck tippers and cranes

Besides these items, there are many more devices, components, and types of equipment which incorporate the use of hydraulic systems in some form to provide assistance with lifting and steering, as well as hydrostatic transmissions and powerpacks. A hydraulic transmission system, for example, uses hydraulics to produce movement in machinery and industrial vehicles.

Fluid Power

The thing to keep in mind is the type of fluid used with the hydraulic system determines its overall effectiveness and how it can be applied to various devices, equipment, and machinery. Ideally, depending upon the actual application, you want to choose fluids best suited to the application.

Hydraulic Pumps

Another important factor is the equipment used to move this fluid and convert mechanical energy and motion into fluid power. Specialized pumps are employed to generate hydraulic energy. Hydraulic pumps work on positive displacement, or by transferring a metered amount of fluid into the system. The system pressure is that required to move the load to which the flow is directed up to the maximum permitted by whatever the system relief valve setting may be.

The action of a pump on fluid can enable machines to open and close, lift, lower or rotate. In the process, hydraulic pumps and other components experience wear and tear. Aluminium, steel, cast iron, bronze, alloys, synthetic rubbers and advanced plastics are used to minimize wear caused by extreme temperatures and pressures.

The most commonly used pumps include:

• Gear Pumps: With these, one gear, attached to a drive shaft, interlocks with another gear and the two rotate together. A gear pump may be external, with side-by-side gears rotating in opposite directions carrying the fluid round the outside from the low pressure side to the high pressure side, or internal, with one gear inside another, rotating in the same direction.
• Piston Pumps: These are essentially pistons moving inside cylinders. The motion of the piston displaces fluid to move it through the hydraulic system. Piston pumps come in axial and radial forms and may give variable or fixed displacement.
• Vane Pumps: Also configurable for fixed or variable displacement, vane pumps feature sliding vanes around a rotating shaft, which constantly adjust to maintain contact with the inside of an elliptical ring called a cam ring. Fluid trapped between the vanes at the inlet is forced out of the pump at the outlet.

For more information about hydraulic piston pumps, gear pumps, and related pump solutions for your hydraulic systems, equipment, and devices, contact White House Products, Ltd. at +44 (0) 1475 742500 or e-mail: sales@whp.co.uk to speak with one of our hydraulic experts.
 

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