Manufacturers Want to Increase Performance of Hydraulic Hoses

At high temperatures, pressures, friction and sharp bends to put each hydraulic circuit. The failure of a hose may require the operator, however, be costly and it is also not without its dangers. In the development departments of manufacturers these issues are therefore high on the agenda. Christian Künstel, Program Manager Eaton Hydraulics says for example: ". The main technological drivers are focusing on safety with simultaneous loss prevention and increasing the life of hydraulic components to avoid downtime" Key factors of hydraulic development in general, have an impact on the hose production, were the ergonomics in the assembly, greater efficiency in the hydraulic system and the environmental friendliness of products. Similarly, also sees Tanja Breunung-Bockenheimer, Head of development oil and hydraulic systems at ContiTech Fluid Systems Mobile. She explains, besides increasing quality demands the tube producers were also confronted with higher purity requirements: "So potent Spülstände are for example in fuel lines, where even the smallest residues could damage the micro-valves in the fuel system, in demand. In addition, customers have increasingly high requirements for pressure and temperature resistance. " This is confirmed by a demand from Parker Hannifin. Reason is that mobile devices, such as are used in particular in agriculture and construction, and more compact and complex are. Of course, the higher pressure must not be at the expense of safety, which is why the maximum allowable working pressure ideally only while maintaining the 4: 1 may rise-Berstfaktors. There are also legal aspects. Künstel explains: "New DIN specifications such as DIN EN45545 relate for example, to improve safety in tension applications, creating new inner-and outer layer materials are used. Reducing the inner diameter tolerance under the revised specifications DIN EN 853, 854, 856 and 857 also has a significant impact on the market for hydraulic hoses as standard ISO18752 for division of hydraulic hoses to pressure ratings, temperature and long life. "Among other things, will thereby adapting the production process to comply with the limited tolerance range necessary, the Eaton employees continues.