Hydraulic Hose Specifications | Construction | Operation

How the fluid within the hose behaves depends on the hose diameter and length. The inner diameter is the diameter within the most inner tubing where the liquid flows. Pressure drops and increased internal temperatures caused by friction with the tube walls is due to the diameter being too small. If it is too large, it can lead to suboptimal system performance due to the flow. Common inner diameter sizes range from 3/16in. to 25.in.

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The outer diameter of the hose is composed of the three-layer structure of the hose as well as the inner diameter. By measuring the difference between the inner and outer diameters, you will get the thickness of the hose wall. This diameter is important to remember for the connection points.

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For the hydraulic system the hose length is much more important than you may have realized. The longer the hose is, the more potential there is for pressure drops. Just as with the inner diameters that are too small, this is because there is more contact between the fluid and interior walls which will create friction. And for this reason, it is critical that the hose is the correct length for the location where it is being used.

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