Hydraulic pumps are an integral part to making the machinery work. A hydraulic pump converts mechanical energy from the pump mover when the hydraulic operates into hydraulic energy. The hydraulic energy is made up of both pressure and flow to make the actuators perform properly. The hydraulic pump operates in two ways to perform: firstly, atmospheric pressure pushes on fluid from the reservoir to the pump from the inlet line. Secondly, the liquid is delivered to the pump outlet and is forced into the hydraulic system.

Pump Classification

All pumps are categorized as either positive-displacement or non-positive displacement. However, hydraulic system pumps are usually positive-displacement. Here’s what differentiates the two:

  • Non-Positive Displacement: Produces a flow that’s continuous, but does not provide a seal that’s positive against slippage. The output is considerably different based on the pressure.
  • Positive-Displacement: Slippage is minimal compared to the volumetric output flow of the pump. It delivers an equal amount of liquid in every cycle of the pumping rotation element. It can either be fixed or changeable displacement.

Types Of Hydraulic Pumps

External Gear Hydraulic Pumps

This type of pump can be either in mobile systems or industrial as lubricating pumps. They can also be used as fluid power transfer systems or oil pumps in an engine. One wheel is connected with the drive while another will rotate in the opposing direction to interlink the external gear pump’s teeth. Then, a bearing block is positioned to help the wheels for clearance during the interlock. A lobe pump is an example of an external gear pump, which operates the two lobes by drive outside the chamber.

Internal Gear Pumps

Internal gear pumps are able to take heavy fluids such as asphalt, adhesives and chocolate. They are often used in machines, presses, fork-lifts and plastics. Internal gear pumps are able to handle temperature changes and can operate for short periods, are reliable and easy to maintain.

Hydraulic Screw Pumps

This type of pump has three worm gears inside it and has an axial flow that moves towards the rotor of the unit. The fluid flows in a straight direction and the operating noise is very soft, making it a popular choice in theatres, operas and other entertainment spaces.

Hydraulic Ring Pumps

Hydraulic power steering systems use ring pumps as a pressure lubrication system. The rotor in the pump is situated inside of a high-pressure pump, also known as a radial piston pump.

Go Hydraulics offers hydraulic pump repair to get it working in your machine. With over 30 years of experience, we know exactly what is needed to restore your hydraulic pump. Our team of professionals have experience repairing hydraulic components in industries such as manufacturing, automotive and agriculture. We can supply you with a new hydraulic pump or repair the one you have to get your machine back up and running.

For any leaks, strange noises, or other issues with your hydraulic pump, we can help with all of your hydraulic services. Leave us a message online regarding the repair service you want or give us a call today!