Hydraulic hose fittings are utilized to connect hydraulic hoses, tubes, and pipes to pumps, valves, cylinders, and other various parts of a hydraulic system. Due to the connections hydraulic hose fittings are expected to make, picking the wrong one can interfere with proper functionality of your operations and even pose a safety issue. As they are available in a wide range of types, materials, and styles, selection can be difficult; thus, this blog will outline how to find the right hydraulic hose fitting.
For many, the only time they have to think about hydraulic hose fittings is during the hose assembly process. In general, crimping is the most common method for assembling a hydraulic hose. However, you must always ask yourself five major questions that can be remembered using the acronym “S.T.A.M.P,” which stands for size, temperature, application, materials/media, and pressure. Once these specifications have been laid out, then an assembly technician can get to work.
Keep in mind that the assembly process varies by crimper model. Nonetheless, the technician will always begin by marking the insertion depth on the hose and applying lubricant onto the fitting stem. Then, they will push the fitting into the end of the hose and insert it into the crimper die. Finally, the technician secures the fitting by activating the crimper’s power unit to apply pressure.
Hose Fitting Materials
Hoses and fittings are available in numerous different types and materials. It is worth noting that the material used for the hydraulic hose fitting defines its properties, with the most popular fittings being made of plastic, steel, stainless steel, or brass.
Plastic Fittings: are generally considered more resistant to corrosion but weaker and less durable. As such, they are not used in hydraulic applications despite their low cost.
Steel Fittings: are composed of a mix of iron with other metals, making them more durable and more resistant to heat.
Stainless Steel Fittings: are used when the operational environment has a temperature range from -425 degrees Fahrenheit to 1,200 degrees Fahrenheit. Moreover, they are a good choice for highly-corrosive conditions, and they are rated up to 10,000 PSI, with some fittings offering up to 20,000 PSI.
Brass Fittings: are weaker and less durable when compared to stainless steel, but they provide leak-proof operation and meet SAE, ISO, DIN, DOT, and JIS standards. More than that, they can operate in a temperature range between -65 degrees Fahrenheit to 400 degrees Fahrenheit, and they can accommodate pressures up to 3,000 PSI.
Aluminum Fittings: are not as popular as the aforementioned fittings, and they find use primarily in the automotive industry.
Types of Hydraulic Hose Fittings
There are two main categories of hydraulic hose fittings, those of which are permanent crimp and field attachable fittings. It is important to note that hydraulic fittings can be further classified as plugs, unions, elbows, and crosses.
Permanent Crimp Fittings: are the most common types, and they necessitate a crimping machine in order to attach a hose to a fitting.
Field Attachable: are excellent options if there is no crimper available as they are fairly compatible with many hoses.
Six Things to Consider When Picking Hydraulic Hose Fittings
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