Which component of a hydraulic hose primarily determines its overall strength?

The braided inner layers of a hydraulic hose are crucial in determining its overall strength. These layers, commonly made from materials such as steel wire or synthetic fibers, are designed to handle the high pressures that hydraulic systems often operate under. The braid reinforces the hose structure, providing tensile strength and contributing to its ability to withstand bending and flexing without losing performance or integrity.

The external cover serves to protect the hose from environmental factors, such as abrasion, UV exposure, and chemicals, though it does not significantly influence the tensile strength or pressure capacity. The inner lining, which comes into contact with the hydraulic fluid, is essential for preventing leakage and compatibility with various fluids but is not primarily responsible for the hose's structural integrity under pressure. The pressure rating indicates the maximum pressure a hose can safely handle, but it is a result of the materials and construction rather than a component that directly contributes to strength. Thus, the braided inner layers are fundamental to providing the strength necessary to ensure safe and reliable operation in hydraulic applications.