Hydraulic hose fittings are critical components in hydraulic systems that connect hoses to key elements such as valves, pumps, and cylinders, enabling the stable and efficient flow of hydraulic fluid. Beyond their basic connecting function, these fittings play a vital role in maintaining system integrity by ensuring tight sealing, withstanding internal pressure, absorbing vibrations, and ultimately prolonging equipment lifespan. As such, they are fundamental to the overall reliability and safety of hydraulic systems.
Hydraulic fittings are manufactured in various shapes and materials depending on application requirements and operating environments. Typically, steel-based materials with excellent corrosion and pressure resistance are utilized. Among these, the CJ-type fitting features a 37-degree flare structure and connects to its counterpart through a female cone configuration. This is one of the most widely used thread coupling methods in industrial settings, offering both superior sealing capability and mechanical stability.
The assembly method employed is the crimp type, wherein the fitting and hose are joined by selecting the appropriate dies and using a hydraulic crimping machine (crimper) to apply uniform pressure for a secure and permanent connection. Precise torque control and tight sealing are essential during the assembly process to prevent fluid leakage or detachment, particularly in high-pressure environments.
CJ-type fittings are available in various angular configurations—including straight, 45-degree, and 90-degree elbows—and are designed based on UNF (Unified National Fine) thread standards, ensuring high compatibility and versatility across systems.
These high-performance hydraulic fittings are widely applied in numerous industrial sectors, including construction machinery, industrial plants, agricultural equipment, port facilities, offshore platforms, and specialty vehicles. Given that failure or leakage in hydraulic connections can lead to serious operational disruptions, reduced productivity, and safety hazards, the selection of proper specifications and the assurance of product reliability are essential.