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Hydraproducts manufacturers two ranges of Hydraulic power pack that may meet your needs. The Hydraulic mini pack is a modular range with powers up to 5. This is only 86mm wide and is used in tight spaces powers up to W. There is also a group of manufacturers specialising in powerpacks up to bar, these are generally for tool clamping and cutting applications. There are several types of pumps used in a hydraulic power unit, these simply group into, Gear, Piston and Vane and any design variations exist within these groups.
The most commonly found pump has to be the Gear type. With hydraulics used to push, pull, press, cut, rotate, lift etc by using hydraulic actuators the versatility of hydraulics is clear. This is why engineers have been solving problems using hydraulics for centuries.
Principles of hydraulic force were discovered in the 17th Century by Pascal, and further work carried out by Bernoulli in the 18th century who utilised fluid in differing conditions to pump and transfer power.
The first Hydraulic press was patented in by Bramah. It is commonly acknowledged that Hydraulics is a compact form of transmitting and converting power. Hydraulics is a specialist discipline, so why not ensure that you discuss your needs with a supplier that has the right experience. That is experience in your industry, as they will be able to bring an understanding of the challenges that your environment needs.
A decision to repair or replace is often a simple commercial or financial decision. Hydraproducts is able to work with you to gather enough information about the current hydraulic system you have. We can use this to size and cost a replacement for you to decide if repairing is a viable option. 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. See our blog for more detailed information. Standard Hydraulic Unit Hydraulic power units built to order from stock parts. Bespoke Hydraulic System Design of complete turnkey hydraulic systems. With sealed for life products, super high cleanliness levels and a clear brief as to what its life expectancy will be. Having a discussion about Pneumatics versus Hydraulics is like comparing a bicycle to a car, one is cleaner and cheaper the other is more expensive, dirtier but more powerful.
But when the obvious advantages of both are acknowledged they both have their place in machine design. Hydraulics is without doubt able to transmit more power by the use of an incompressible oil. It does however have a higher installation cost and can be dirtier than pneumatics.
Pneumatics will bring clean low energy to factory installations, but the operating costs are times more expensive than the equivalent hydraulic power. When fitting or installing a hydraulic power pack a great deal of preparation can be needed. Secondly, will the power pack operate properly where it is fitted. Site conditions can be everything here, can it be kept dry and cool. Hydraulic power packs always prefer these conditions.
Also can you access the power source properly and can the hydraulic pipework be safely and neatly installed where it is needed. In keeping with all good equipment suppliers a good service manual will tell you how and when the hydraulic equipment should be maintained. Perhaps a discussion about the service conditions will alter the normal recommendations, so these details, as above are key to lifespan of a hydraulic power unit.
In our experience an early service after commissioning is a really good idea for all systems, as many of the hydraulic contaminants are generated during installation, and a good systems flush cannot always be guaranteed. If a service log is kept this is useful and running hours can be often translated into service recommendations for your maintenance team. Prevention is better and cheaper than cure!
So many factors are at play here, that is difficult to give a clear answer. A key list of factors effecting lifespan are Cleanliness, contamination simply leads to wear as particles rub together. Heavy contamination can clog filters and decrease the thermal efficiency of the cooling system in a hydraulic power pack.
Oil type, Grade composition and additives are key here and a vast range of options are available. Oils most suited to your market place will no doubt be available. Great improvements on pump efficiency have been made over the last few decades. So this is not too bad compared to linear actuators, but does come under threat compared to a simple chain and sprocket. Of course to achieve this level a holistic approach must be taken when designing a machine with hydraulic actuation.
Fundamentally does the power pack you have do the job you require? If the answer is YES then, what improvements can be made. Energy efficiency, might be one area we all care about, is it running at its peak efficiency and if not why not. This is something a good hydraulic engineer can check for you, and make recommendations accordingly. One other area might be cleanliness, often if this is improved by introducing better filtration the life of the power unit can be extended.
Have your needs changed and does the system need to be re-designed to accommodate more functions or you simply need things to happen a little faster. If you are in Europe then we are lucky to have some of the best resources for Fluid power training in the world. Technology centres such as the National fluid Power Centre, Worksop and the University of Bath specialise in training engineers in Hydraulics and pneumatics.
Hydraproducts do run training course for customers, your service engineers and technicians can be instructed in the installation and maintenance of our equipment. Run by our experienced team an in-depth understanding of our product is essential to offering customers an overall service package. So always ensure that the manufacturer or importer can provide such evidence, this will give you confidence that the hydraulic power unit has been designed and manufactured to be safe.
There are risk involved with all machinery, but those that pertain specifically to hydraulic machinery are centred around the use and transmission of oil under pressure. Oil escaping under pressure can cause high pressure injection injuries from as low as 7bar. These can be a crippling injury if oil is allowed to break the skin and enter the blood stream.
So what must be done, comprehensive preventative maintenance programmes, as well as appropriate training provisions. These mitigate the risk of hydraulic injuries within your environment. Here are a summary of some of the standards you can expect to be applied by Hydraulic equipment suppliers:- ISO applies to the design, construction and modification of systems and their components, also taking into account the following aspects: assembly, installation, adjustment, uninterrupted system operation, ease and economy of maintenance and cleaning, reliable operation in all intended uses, energy efficiency and environment.
ISO establishes basic elements for symbols. It specifies rules for devising fluid power symbols for use on components and in circuit diagrams. Hydraulics is nothing new, considered as a motive force since the 17th century, but it is still improving as it must, to keep track of todays digital environment. The latest developments are focused around digitization and how hydraulic power packs and components can interface with concepts such as IoT.
Notably in industrial technology the control and monitoring of wholes plant can take place remotely by many users over the internet. Energy efficiency has been are area of great advancement across the hydraulic industry. Other areas such as lower power rating solenoid designs and pump energy optimisation valves all contribute.
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