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Our hydraulic power units are used in a variety of different situations. Sometimes they are required to be operated in potentially explosive atmospheres.
At the heart of every hydraulic system is a power unit. It needs to be reliable and be capable of performing the job at hand. We design each of our power packs to be cost effective, reliable solutions. They are application-specific to complement our cylinders.
Most of our hydraulic power pack units are built from stainless steel, steel or aluminium and can hold a volume of no more than 2000 litres. Whatever the load is that you need to handle, we can provide you with the right unit.
In addition to our power packs, we can supply items such as extra oil trays that can collect to protect the environment, noise-reduction casings and canopies that are weatherproof.
Contact us and let us know of the specifications required on your power pack, and we can support you in meeting your requirements.
Depending on what your load is and where your equipment is located, we can even equip our power units with an integrated cooling system complete with water, oil or heat exchanges.
Our valve blocks are known for being extremely accurate and therefore enabling a fast precision finish even when a volume flow rate of 750 litres per minute is in use.
With every system that we supply, we provide system-specific data sheets and fully comprehensive documentation. Whether it’s an ATEX certified unit or not we can provide you with certification and inspections as required.
Whatever you are looking for in terms of a hydraulic power unit, know that our range are designed by our engineers to provide you with a smart solution to your needs. Contact us today to discuss your requirements.
In this article we want to explain the ins and outs of hydraulic powerpacks. A vital piece of equipment that is used with so many machines we see every day.
In a nutshell, hydraulic powerpacks are self contained units that are used instead of a built in power supply for hydraulic machinery. Hydraulic power uses fluid to transmit power from one location to another in order to run a machine. It really is as simple as that.
So what do they look like?
In order to recognise and better understand hydraulic powerpacks, it is a good idea to get to know the key components. Hydraulic powerpacks come in many different shapes and sizes, some are very large and stationary whereas others are much smaller and more compact. In fact, some hydraulic powerpacks are so compact that they can easily be transported in a small van or even an estate car.
The only real way to identify hydraulic powerpacks is through its main components. No matter the size of the unit, all power packs will have the following; a hydraulic reservoir, regulators, a pump, motor, pressure supply lines and relief lines.
What do these components do?
It may be obvious to some but in this post we wanted to explain every component as simply as possible. So here goes.
First up is the hydraulic reservoir which quite simply holds the fluid. Reservoirs will come in different sizes.
Then we have the regulators. Regulators are vital as they control and maintain the amount of pressure that the hydraulic powerpack delivers.
Thirdly we have the pressure supply lines and relief lines. The supply line simply supplies fluid under pressure to the pump and the relief lines relieve pressure between the pump and the valves. The relief lines also control the direction of flow through the system.
Finally we have the pump and a motor. We will begin with the simpler component of the two, the motor. The motor is simply there to power the pump. Easy as that. Now the pump generally performs two actions. Firstly, it operates as a vacuum at the pump inlet and through atmospheric pressure forces fluid from the reservoir into the inlet line and then to the pump. It then delivers the fluid to the pump outlet and pumps it into the hydraulic system. We did warn you that the second part would be slightly more confusing.
So what is the function of hydraulic powerpacks?
Hydraulic powerpacks deliver power through a control valve which in turn runs the machine it is connected to. Hydraulic powerpacks come with a variety of valve connections. This means that you can power a variety of machines by using the appropriate valves.
Hydraulic powerpacks are relied upon by a range of different machines that use hydraulic power to do its work. If a machine is required to carry out heavy or systematic lifting then its likely it would need help from a hydraulic powerpack.
To make it easier for you to understand, we have included a list of trades that regularly rely on our powerpacks. On a building site you will see machines like bulldozers and excavators, which both need hydraulic powerpacks. But, it is not just on building sites that you will find these types of machines. Fishermen and mechanics both need hydraulic powerpacks too. If we did not have them then how would fishermen lift their nets or how would mechanics lift our cars?
When picking a hydraulic powerpack there are a variety of pumps and options to pick from and it is important to pick the right pack to meet your machines needs. It is also important to consider a pack that will help maximise productivity and minimise cost.
Many people will overlook the necessity of hydraulic powerpacks, but they really are vital to ensuring our society runs efficiently.
Do you need to maintain hydraulic powerpacks?
Yes you do and this is hugely important! Hydraulic powerpacks require regular maintenance to ensure they are working properly and safely and to help extend their life. Maintaining hydraulic powerpacks is relatively simple and includes checking the tubing, this can be for any noticeable problems such as dents or cracks. It is also vital to regularly change the hydraulic fluid and look at the reservoir to check for any corrosion or rust.
What hydraulic powerpacks do we provide?
Generally we provide four different types of hydraulic powerpacks. You can pick from a standard powerpack, a mini powerpack, a micro powerpack or a bespoke powerpack.
The standard hydraulic powerpack uses a standard range of modular components and is ideal for the most demanding industrial applications. The mini powerpack is ideal for applications requiring up to 5.5kW. The micro hydraulic powerpacks were originally produced for mobility applications, so are great for when space is limited. Finally, if none of these seem to fit your needs then we offer bespoke hydraulic powerpacks ensuring your application gets the hydraulic powerpack it requires.
Finally, who is the genius behind hydraulic powerpacks?
The man behind hydraulics was Laissez Pascal. A French mathematician, physicist and religious philosopher who lived in the mid seventeenth century. Pascal made observations about fluid and pressure which led to Pascal’s law. Pascal's law states that when there is an increase in pressure at any point in a confined fluid, there is an equal increase at every other point in the container. Hydraulic powerpacks have been designed based on Pascal's law of physics, drawing their power from ratios of area and pressure.
So, interested in our Power Packs? Come on over to the main website and see what we can do for your Hydraulic Power Pack Needs .
As designers and manufacturers of the highest quality hydraulic parts we are very proud of our mini hydraulic power packs, which can be driven from 12 or 24-volt direct current (DC) supplies. Our OEM customers rely on our consistency and quality to build functional and reliable equipment, including tail lifts, tipper trucks and trailers. Typically, our 3kW output motor, which relies on a 24v DC supply, is used to raise and lower the ramps of trailers used to transport heavy equipment. The nature of the equipment using the ramp, means that the ramp itself must be sturdy in construction and therefore, quite heavy to lift. The 3kW mini power pack does this with ease, and is fan cooled to guard against overheating.
For more lightweight applications, such as tailgate lifts on commercial passenger vehicles, a smaller output is needed. For these uses a 12v mini hydraulic power pack is used, as the 12v motor can be wired into standard vehicle electrical circuits for tailgate lift functions. The 12v model is available with a 500W or 800W output, so the choice depends on the amount of power that is needed to drive the hydraulic pump in the system.
We manufacture our products to be compatible with all major brands of pumps and valves, so they can be used in any system where a new component is needed, or the system needs to be upgraded to handle a larger capacity. Our valves and other components we manufacture, are also designed to be used in a wide variety of systems, and with a global distribution network we can serve your DC hydraulic motor needs wherever you are.
Our mini hydraulic power packs may be small (around 16 inches long) but they are capable of packing a mighty punch; the model with most capacity is the 3kW, 24v model, but the 12v and 24v models have outputs between 0.5kW and 2kW. This is a wide range of strengths, allowing our customers to use the most efficient and appropriate motor for their needs. This range also means systems can be designed with the lowest possible power consumption across all parts, but with the most efficient hydraulic output of that power. System designers do not have to compromise on power because the ideal output size is not available. We do make bespoke components, so even if we don't have the exact off-the-shelf DC power pack you need, we can still make it happen for you.
Our micro hydraulic power packs are also a great option for when one of our mini power packs are too large for the space available. They are only 89mm square and can be discreetly installed in the moving arm of a security barrier or automatic gate system. The 0.5kW mini motor with 12v DC supply is often used for step lifts and other applications where the load to be moved is not too heavy, so step lifts and passenger lifts on small vans or taxis that will not be taking huge equipment, can be driven by one of these smaller motors. Running on a 12v DC supply means that the tail lift system can be seamlessly integrated into the electrical systems of the vehicle, and operated from the standard dashboard. The driver can raise or lower the lift from the comfort of the driver’s seat and not worry about having to use separate controls for this action.
If you are reading this as an OEM then please do not hesitate to get in touch with us. If we haven't got your ideal component listed on our website, then we will be delighted to create a bespoke product that answers your problems, all manufactured on site in the UK. Call us today on 01452 523352
Hydraulics has been around for a very long time. But are you aware of how far it has actually come? You wouldn’t be alone if you responded with no. It is a very technical subject that can be quite difficult to understand, but in this article we want to tell you the story of hydraulics! We want to share with you who discovered hydraulics, what it was originally used for and how hydraulic power got to where it is today.
So why don’t we start at the beginning! Where does the word hydraulic come from?
The word hydraulic originates from the Greek word ‘Hydros’ which means water. Why water? Well, this is because water was the first liquid to be used in the hydraulic system. Today, hydraulics includes the physical behaviour of all liquids, not just water.
As you are aware we love hydraulic power, we wouldn’t do what we do if we didn’t. But, today we wanted to write an article on some of our favourite machines that are powered by hydraulic powerpacks. We have told you before that the world is a better place because of hydraulic powerpacks, and today we are going to prove it.
Firstly we have chosen to look at how hydraulic powerpacks help the everyday mechanic.
In the UK, there are as many as 36 million cars registered on the roads. At many points during a cars life, they will need to visit a garage. Hydraulic lifts are vital for mechanics to see and get under your car and our hydraulic powerpacks can easily connect to your mechanics lift, providing all the power it needs to lift up your car. This in turn not only makes a mechanics job much easier, but it also means your car has been thoroughly checked over. Thanks to hydraulic power your car will spend a minimal amount of time out of action.
Hydraulic power packs, such as the ones supplied by Hydraproducts, are a vital part of the construction industry. With a huge push on new home building across the country, it is a daily occurrence to see heavy plant equipment moving earth and preparing groundworks for construction. All of these ‘earth moving’ machines use hydraulic power to effect motion in the moving parts, with hydraulic rams serving as the muscles of the machine to raise and lower a digging arm, or to move large pipes into place for infrastructure development.
Hydraulic power packs allow the machinery to generate more power in the moving parts than if just the engine power alone was directly driving the hydraulics, so they mean a smaller excavator can move as much as a larger one without the need for that extra space. On new build sites, there is a lot of space to start with, so there is no issue with the largest machinery manoeuvring around the site. When houses start to go up and roads are installed, there is less machinery space and it makes sense to use a smaller version of a particular machine that has the same power capabilities.
A hydraulic power pack can also reduce the amount of fuel used to drive the hydraulic components, as most heavy earth moving equipment has a range of modes that can be selected to give the right amount of power while remaining economical. Digging out large amounts of earth will use a lot of power, and this can be increased above the machinery capacity by using a hydraulic power pack. Fine grading of embankments, or excavating over mains power, gas or sewage pipes requires a fine degree of control that is best achieved at a lower power. Hydraulic power packs can help to control this when used in combination with the modes available on the machinery itself. The effect is a reduction in fuel used to generate the hydraulic power and a considerable cost saving over the lifespan of a project.
Because the earth moving equipment uses hydraulics there is no need to employ a separate engineer to maintain and repair the hydraulic power packs as they use the same technology, so there is no extra cost in maintenance terms, just the cost of the power pack. When considering this investment, it is important to understand that the better control leads to improved productivity and workforce morale, as well as a lower outlay on fuel.
Hydraulic power packs are not confined to use in the preparatory stages of a large building project, however, they are also used to work cranes, that lift roof struts into place; in forklifts, that move materials around the site and even in concrete pumping machines, that are used to lay floors and external hard standing surfaces. Hydraproducts are very happy to work with equipment manufacturers to find or design the perfect hydraulic power pack for the construction industry.
Hydraulic power units are used for a broad range of applications from operating control valves in the outback of Australia to raising parking barriers in Siberia. To match this range of applications there are an equally large range of hydraulic systems and products.
Whether you are designing, specifying, manufacturing or purchasing a hydraulic power pack there are several pointers that will narrow down this range.
Firstly an assessment of the power that will be required. This does often require the use of appropriate hydraulic and mechanical design tools. Some useful tools can be found here http://www.hydraproducts.co.uk/hydraulic-calculators.aspx. When the power (kW) level is known this leads to second stage of deciding upon what power source might be available.
Power sources are typically electrical, combustion engines or mechanical drive. Electrical sources will divide into AC and DC, this will depend greatly on the application and location. Where electrical sources are not possible, such as trailers, petrol, diesel or gas combustion engines can form the centre of a hydraulic power pack. Common for vehicle based hydraulic systems a DC, or battery will give the motive power source.
Each of the power sources will have their practical and economic limits.
Typically DC Power available on the majority of vehicles is a maximum of 3kW. A small commercial vehicle or van would be 12VDC and a maximum battery power of 2kW. Whereas a larger heavy goods vehicle could have a 4kW 24VDC system. Forklifts and other goods handling equipment will often be 48 or 72VDC.
AC electrical power can generally be spilt into two camps, 1 phase and 3 phase. For domestic/office applications 220-240V 1phase will be available up to a limit of 2.2kW. Site work will often be operated at 110V 1 phase and this will be limited to 1.5kW. 3 phase power covers a much larger range from 0.09kW to over 100kW, and this will be common in all industrial applications.
Combustion engines cover a wide range, with small single cylinder petrol engines starting at 4HP and diesel engines starting slightly higher than this at 6HP up to over 100HP.
This chart summarises the maximum power source ranges:-
AC 1 PHASE
AC 3 PHASE
This chart is based on products that can be built economically, and not what is physically possible.
The next question to ask yourself might be what is the operating duty of the powerpack will have to work within. This is important when selecting which type of powerpack as for example it may not be possible to specific features such as tank size or motor type that will ensure they can run continuously. If we simply divide these into S1 (running 100% of a day) and S2 (running for a short operating time).
This chart will allow some division of our product range based on operating duty:-
Hydraulic Power Pack
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