What Components Make Up Hydraulic Power Units or HPUs?

The primary driving unit of the hydraulic system happens to be the HPU or the hydraulic power unit. This mechanism comprises of a motor, reservoir and one Hydraulic Pump. These HPUs are able to generate huge amount of power for driving all types of hydraulic ram. It follows the physics’ Pascal’s law as the operational mode just like any other power unit. They tend to draw the power from pressure ratios and areas.

Various applications to consider:

It is true that hydraulic power unit or HPU comprises of a wider range of applications. It is mandatory to learn those areas where HPU is used to help understand its importance in the industrial belt.

Product Usage Areas
Hydraulic power unit or HPU
  • Machine tools
  • Meat processing machines
  • Rolling mill machinery
  • Paper mill machinery
  • Marine equipment
  • Clean up equipment designed for oil spillage
  • Military or government equipment
  • Production and theatrical equipment
  • Industrial process
  • Construction equipment
  • Automation and oil fields
  • Agricultural equipment and aerospace testing products
  • Material handling and subsea equipment

These kinds of applications are in great need of systematic or heavy lifting to match the power of HPU. Such units are widely used on a daily basis and they are mostly found out on the constructional sites in some machines like bulldozers, excavators and skid steers. Each machine is known to perform the task, which is reliant upon power produced by that of the hydraulic power units. The fishing industry is also quite relying on HPU for lifting heavy nets and even pots. You can even see the use of hydraulic machine at local mechanic’s garage. These mechanisms are used for lifting cars and taking proper look beneath them or just walk around below the vehicles.

Components making up the HPU:

Some of the complex versions of the hydraulic systems comprise of multiple components. Some of them are related to the function of circuits like directional valves, manifolds and pressure valves. Then you have other components, which are in need of fluid monitoring and conditioning. Some of the added components are used for monitoring and fluid conditioning.

  • Heat exchangers, filters and pressure gauges are some of the components, widely used for ensuring safety and reliability in terms of power unit operation.
  • Mainly because of the ease of use and high convenience, most of the components are mounted on top of the reservoir. These components command much of the real estate and the reservoirs are made oversized for accommodating the same.

The steps alongside the components:

The first step in power unit creation has to be proficient use of hydraulic schematic. Hand-drawn one helps the users to choose actuators along with the primary components. However, a detailed drawing will help you with visualization of the present component layout. It is vital for the circuit drawing to be modified for including every possible component that otherwise exist on power unit. It will help the technicians to not just understand ways to install and plumb components, but will further help them with future repairs and troubleshooting.

Help from the experienced designers:

Some of the experienced hydraulic designers will know what the power unit is actually in need of. But checking out the circuits will help them to catch up with spot gaps where the obvious components must be drawn, and later added to bill. Ball valves, test points, driver couplers and bell housings are some of the important components to be included in the list. When the schematic is done, BOM or Bill Of Materials is subject to be created.

The real deal:

The major component set of the HPU got to be motor or pump assembly. It comprises of motor of proper power capacity, chosen pump, drive coupler set and the pump motor mount. Mostly called bellhousing, the motor mount helps in fixing C Face electric motor to pump. It will further provide gap for installing the couplers.

The coupler then slides on motor shaft and the mate slides on pump shaft. After that, a synthetic rubber is used in between them before couplers get to be pushed together and fixed in their allocated places with set screws. Remember to select coupler set for proper horsepower and even for the potential pressure spike.

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