 Hydraulic fittings ;connect conductors such as hoses, pipes, and tubes in a hydraulic system. Most fittings have a male and female component that joins to form a connection. These connections help contain and direct the flow of hydraulic fluid in the conductor while preventing leaks and maintaining pressure. Different fittings allow designers to change flow direction, the elevation of lines, or split flow. Crimping is the most common method for assembling hoses and fittings. Once the crimp specifications have been checked for the specific hose and fitting, a crimping machine is adjusted to the appropriate crimping diameter setting. The next step is to lubricate the fitting, put it on the end of the hose, and then put it in the crimping machine.
Some companies, Parker, for example, offer a no-skive option on their hoses. Skiving refers to a process where part of the hose cover or even the inner tube is removed before a hose end is attached. No-skive hoses do not require this step. Many prefer no-skive options because it makes hose assembly quicker and reduces the risk of hose damage during crimping.
Fitting geometries include crosses, plugs, elbows, and others. It’s important to pay attention when identifying the threads of the connections. Often, connections from one standard appear to thread into another standard port but do not have enough engagement to be safe. Furthermore, most fittings are brand-specific for certain hoses and may not work with other brands. While fitting dimensions often correspond to the size of the conductor there can still be a variance in fitting options for one size of pipe or tube.
Fittings are made of many different materials including stainless steel, brass, plastic, Monel, and more. Not always, but often fittings match the material of the conductor used in a system. This multitude of materials creates fittings with a wide array of performance capabilities. Most hydraulic fittings have designated pressure and temperature ratings as well as size and dimension standards set by the SAE.
Hydraulic Fitting Blank
Hydraulic fittings form part of a hydraulic system that connects hoses, pipes, and tubes. There are various fittings that are used to connect the system together and help the hydraulic fluid to flow through. Hydraulic fittings, or hose fittings, are used to connect hydraulic hoses and pipes to other components such as valves and pumps.
Hydraulic Fitting Blank ;will usually have a male and/or female connection which joins to other components. The connections are usually threaded and there are several thread standards available, such as JIC, BSP, and BSPP. BSP male threads will seal with BSP female threads, for example. Popular materials include plastic, brass, and stainless steel fittings.
Compression fittings provide water-tight connections by using pressure to seal the connection. They usually use a compression nut which, when tightened, removes space between the ferrule and the pipe.
Threaded fittings have screw threads on both sides of the connection. They accept connections with compatible threads and screw together for a secure connection. Not all threads provide a tight seal and may benefit from additional coatings or seals.
Crimped fittings require the crimping of the hose to the fitting. You may require a crimping tool to achieve this.
Thread Types
Hydraulics machines are used all across the world and there are many components used in each system. Thread types are used to help make parts easily identifiable and easy to maintain and replace. Some examples of thread standards include: |
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