Many factors can affect the life of a hydraulic hose, including site damage, abrasive wear, and prolonged exposure to heat and ultraviolet light. These can all be dealt with, but it will all be for naught if hoses are not installed and routed correctly.
Jamie Vokes | Mar 08, 2019
Many people don’t consider hydraulic hoses to be high-tech components, even though they are expected to tolerate a wide spectrum of pressures, thousands of machine cycles, pressure ripple and spikes, and a wide range of motions. And if a hose fails, results include expensive downtime, damage to equipment, and potential injury to personnel. Following guidelines at the design stage can make equipment much more reliable, easier to maintain, and safer.
Because hose assemblies are flexible, be sure to make allowances for the application of pressure. Hose assemblies can stretch as much as 2% when pressurized. More importantly, they sometimes contract as much as 4%. This can place excessive strain on the reinforcement of the hose and the crimp fitting, leading to a shortened lifespan of the hose assembly. Therefore, you should cut the hose slightly longer to allow for expansion and contraction.
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