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Semperit Hydraulics' new generation spiral hose is distinguished by its outstanding resistance to various hydraulic oils, flexibility and durability in service. One of the key innovations has been the new Semperit NBR inner liner of these hydraulic hoses that makes them leakage-proof. It withstands heavy-duty mechanical stress and is chemically resistant to many oils that run through it. It significantly reduces the possible shortcomings of standard NBR inner liners like crimping behaviour and insufficient cold flexibility. <p></p><p> <span style="font-weight: bold;">Resistant and flexible </span><br />A hose inner liner being especially resistant to chemicals is becoming more important as modern hydraulic systems increasingly use bio oils for environmental protection. The oils have to meet higher demands in terms of lubrication properties and temperature resistance. To this end, producers use additives that may chemically damage the inner liner and eventually cause leakage. Therefore, the inner liners have to be ever more resistant to chemicals and have to perform under enormous pressure that may top at 1,000 bar, i.e. 1,000 kg per sq cm.</p><p>Besides high resistance, flexibility is crucial for an easy installation with little force in the tightest space. Semperit has achieved this with a truly innovative hose design and optimised production processes.</p><p>The new Flexline 5000 is a high flexible multi-spiral compact hydraulic hose with a significantly reduced bend radius (compared to SAE R13) and bending force and meets ISO 18752-CC. Its reinforcement is provided by four spiral layers for DN 10ûDN 32 and six spiral layers for DN 38-DN 51 of high tensile steel wire, withstanding a working pressure of =350 bar. The Flexline 5000 has a temperature range of medium -40°C- +120°C and provides an improved oil resistance due to the innovative NBR inner layer and provides an optimised cover thickness for no-skive crimping.</p><p><span style="font-weight: bold;">Successful tough tests </span><br />Semperflex' engineers have not only run their new spiral hoses through numerous sets of lab tests with well-known hose fitting manufacturers but also put them through rigorous long-term field tests in collaboration with select customers. This included applications with substantial pressure peaks, tightest bending radius, extreme flow rates, and mechanical stress from torsion twists to several tons of weight per lifting action. &quot;In our new spiral hose generation we have achieved new levels of service life and durability that we have also already proven in field tests under the toughest conditions,&quot; concludes <span style="font-weight: bold;">Philipp Winter, Head of Commercial at Semperflex Hydraulics.</span> </p><p> (Communication provided by company)</p><p></p>