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An eco-friendly approach to hydraulics Agricultural engineering is one of the most innovative areas of machine and utility vehicle construction, as was clearly demonstrated at the Agritechnica in Hanover, Europe’s biggest trade fair for the agricultural industry. Here too, total costs of ownership and lifecycle management are becoming increasingly important. To put it simply: we are witnessing a trend where economics go hand in hand with the eco-friendly approach of this sector. Accordingly, it makes sense for machine manufacturers to turn their attention to hydraulic filtration systems too, in order to guarantee maximum availability for their customers in the agricultural industry. Details >> |
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50 years of O+P: The history of fluid filtration As already described in the previous articles of this series, hydraulic systems have undergone major changes during the course of their history. The same of course applies to fluid filtration. Details >> |
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Product refinement brings multiple advantages Suction-return flow filters have been popular with designers of mobile hydraulic systems for many years. Here, an expert takes a practical look at the possible applications of these filters, the potential problems associated with them and how they can be avoided in the first place by careful design. Details >> |
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Oil filtration Building machines are technically complex systems whose components have to meet exacting standards. Installing quality high-tech components makes the machine expensive. At the same time, economy is a deciding factor when purchasing building machinery. The acquisition costs have to be balanced against the ongoing running costs and expected lifetime. Possible machine failures are of course hard to budget for in advance, yet they are often responsible for driving up running costs. Hydraulic systems have a key role to play here: nearly all building machines have hydraulic systems of varying degrees of complexity, and damage to the hydraulic system can be a costly affair. Details >> |
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A breath of fresh air for filtration technology The leading international trade fair for wind energy, Husumwind, has recently demonstrated once again that this sector is being buoyed up by a demand for ever bigger and better plants. But the susceptibility of this technology to faults has so far prevented it from really taking off. So now an alternative filter concept has been devised to render it more fail-safe, thereby significantly reducing operating costs. These were the opening words of an interesting article on the special range of hydraulic filter equipment made by RT-Filtertechnik GmbH for the wind power sector which appeared in the magazine Konstruktion + Engineering (November 2003 issue). Details >> |
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Hydraulic filtration in construction machines Details >> |
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The ergonomics of the suction-return-flow filter Suction-return-flow filters are playing an increasingly important role in mobile hydraulic systems. No longer a technical curiosity, they are now installed as standard in mobile machinery. Consequently, more attention is being paid to the issue of easy maintenance and handling. In the following article, we have summarised some of the ergonomic advantages of the suction-return-flow filter. Details >> |
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Improved efficiency thanks to intelligent filter systems Detailed solutions for hydraulic systems such as filtration are seldom discussed on these pages. At the forthcoming BAUMA, RT-Filtertechnik GmbH will be offering an insight into this branch of technology, which has been gaining importance for some time now. This growing interest has prompted the company to attend the show again armed with the latest know-how. Details >> |
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Can oil maintenance save costs? In nearly all machines requiring a lot of power – from construction machinery to machine tools to special-purpose vehicles – a vital role is played by hydraulics. The maintenance and repair of this equipment is re-garded as cost-intensive, however, as the components are dear and troubleshooting can often be time-consuming due to lack of expertise or inadequate measuring apparatus. This article demonstrates by way of some examples how costs can be reduced by optimising the hydraulic fluid in relation to the machine components. Details >> |
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Cutting-edge technology plus For all their popularity among designers of mobile hydraulic systems, it would be a mistake to regard suction-return-flow filters as a cure-all. In this article, an expert describes the possible problems from a practical point of view and explains how they can be avoided in the first place through shrewd design. Details >> |
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Playing safe The word nowadays is that filtration is important for the efficiency of hydraulic systems. While the consumer may see it a necessary evil, for engineers it is an integral com- ponent of the system. Although the available solutions for keeping hydraulic fluids clean are growing increa- singly sophisticated, it is sometimes the case that “less is more“. Details >> |
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What is new in the field of magnetic filtration? The catchword of the year 1999 in the filter industry is undoubtedly "ISO MTD". Now that the long since discontinued production of ACFTD - also known as Arizona dust - has finally been replaced by the ISO MTD test dust, the relevant standards for evaluating filter performance have now also been drafted. These are known as ISO 4406:xxxx, whereby "xxxx" stands for the anticipated introduction date. This is a further sign that the industry is currently in a process of transition. Details >> |
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Tips for a well-designed suction filter Suction filters are important for guaranteeing trouble-free operation in many types of machines, e.g. portable concrete pumps. The following tips are designed to help you avoid problems in your suction filtration system and prevent cavitation damage to your pump. Details >> |
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Grasping the nettle Today’s hydraulic systems would be unthinkable without modern filtration techniques. Nevertheless, there are some aspects of filtration technology which remain open to discussion. In this article, RT-Filtertechnik tackles one such controversial topic: that of suction filtration and its possible applications. Details >> |
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Filter selection The purpose of filtration is to make sure that the hydraulic fluid conforms to the purity class required for the components in question. Details >> |
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The importance of filters The constantly increasing demands placed on hydraulic systems in terms of reliability, availability and economic efficiency has led to increasingly high standards with regard to the quality of hydraulic fluids. Contamination with solid impurities is a major problem in hydraulic systems. Details >> |
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How ´fine´ should the filtration process be? The most common cause of failure in hydraulic components is the presence of solid impurities. This problem is primarily due to the penetration of particles from outside and, to a lesser extent, the generation of abraded matter within the system. So far, relatively little is known about the wearing processes within hydraulic systems and, for this reason, users rightly expect the filter manufacturer to guarantee the right ´economic´ oil purity class for the system in question. Details >> |
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Permanent magnets in action The task of filtering out and separating ferromagnetic particles has occupied engineers intensively since the 30s. The man behind the technological know-how of RT-Filtertechnik, the world-famous Prof. Dr. Hans Thoma, already began work on magnetic filtration before the second world war. Details >> |
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