For many of us, the first time we have to decide which type of hydraulic standard fittings wholesale hose coupling to use is during the hose assembly process. Crimping is the most popular method of assembling hydraulic hoses. Before you start using any hose assembly, it is best to ask yourself the five main questions about STAMP (size, temperature, application, material/medium, and pressure). Once the specifications are defined, the hose assembly technician can begin work.
The process may vary depending on the crimping machine model, but usually the technician will mark the insertion depth on the hose, apply lubricant on the joint rod, push it into the end of the hose, and then insert it into the crimping machine mold. Finally, the technician applies pressure by starting the power unit of the crimping machine to permanently fix the joint to the hose. There are many different types and materials of hoses and fittings. Importantly, the material used for hydraulic hose joints determines its characteristics.
The most common fittings are made of plastic, steel, stainless steel or brass. Plastic fittings are generally considered more corrosion resistant, but weaker and durable. Therefore, despite their low price, they are the least popular choice for hydraulic applications. Due to the high pressure level, metal fittings are more suitable. Steel parts are a mixture of iron and some other metals, making them more durable and improving heat resistance.
For example, carbon steel fittings made of a mixture of iron and carbon can withstand temperatures from -65°F to 500°F. When the temperature range required for work is -425°F to 1200°F, use stainless steel fittings. They are an excellent choice for highly corrosive environments. Typically, they are rated for pressures up to 10,000 psi. Some specially designed stainless steel fittings can be rated up to 20,000 psi. However, the high price makes them more unaffordable, so other alternatives are usually considered. Brass fittings are not as durable as stainless steel. They can provide leak-free operation and comply with SAE, ISO, DIN, DOT and JIS standards. The temperature range of brass fittings is -65°F to 400°F. They can withstand pressures up to 3000 psi, but a lower pressure range is generally recommended.
