What is Steel Wire Hydraulic Hose?
A hydraulic hose is specifically designed to convey hydraulic fluid to or among hydraulic components, valves, actuators, and tools. It is typically flexible, often reinforced, and usually constructed with several layers of reinforcement since hydraulic systems frequently operate at high or very high pressures. Hydraulic hose is used in a variety of industrial hydraulic systems. Dimensions, performance specifications, construction options, and features are important parameters to consider when searching for hydraulic hose.
Important dimensions for the selection of hydraulic hose include the inside diameter, outside diameter, and minimum bend radius. Hydraulic hose sizes are denoted by the inside and outside diameter of the hose. The inside diameter refers to the inside of the hose or liner. The outside diameter is often a nominal specification for hoses of corrugated or pleated construction. Minimum bend radius is based on a combination of acceptable hose cross-section deformation and mechanical bending limit of any reinforcement.
Construction options for hydraulic hose include reinforced, coiled, corrugated, or convoluted. Reinforced hose is constructed with some element of reinforcement—styles include textile braid, wire braid, wire helix, and other designs in many ply or layer configurations. Coiled hose is coiled for flexibility and elasticity. This feature often makes it expandable and easy to store. Corrugated hose contains corrugations, pleats, or spiral convolutions to increase flexibility and capacity for compression and elongation. Multi-element hydraulic hoses are constructed of more than one hose formed or adhered together in a flat, ribbon, or bundled configuration. Additional features to consider include integral end connections, anti-static, lay flat, crush-proof, flame-resistant, and explosion-proof.
Most hoses are manufactured to SAE J517 or European Norm (EN) Standards, the latter based on earlier DIN German standards. These standards predominate in the Americas, Europe, and Australia. Both are also used throughout Asia, though that market is slowly gravitating toward EN specifications primarily because EN-rated hose has a higher pressure rating compared with similar-sized SAE hose. This gives greater safety factors should an application not need the highest working pressure.