16711 JIC Fitting for Hydraulic Hoses​

Product Overview

The 16711 JIC Fitting represents a high-performance solution for hydraulic hose connections in industrial and mobile applications requiring reliable performance under demanding conditions. Designed to comply with SAE J514 standards for Joint Industry Council (JIC) fittings, this component provides secure, leak-free connections in medium to high-pressure hydraulic circuits where precision and durability are essential. Its 37° flare design creates a metal-to-metal seal that excels in vibration-prone environments, making it a preferred choice for critical hydraulic systems across industries. The 16711 JIC Fitting combines time-proven sealing technology with modern materials to deliver consistent performance in diverse operating environments worldwide.

Product Features

Proprietary Sealing Technology

The 16711 JIC Fitting features a precision-machined 37° flare seating surface that creates a reliable metal-to-metal seal when mated with compatible fittings. This flare undergoes a micro-finishing process to achieve a surface roughness of Ra 0.8, ensuring maximum contact area and minimizing leakage paths. The fitting incorporates a reinforced flare neck design that enhances resistance to cracking under bending stress, a common failure point in standard JIC fittings. Unlike thread-sealant-dependent designs, this metal-to-metal sealing mechanism maintains integrity through thermal cycling and vibration, providing long-term reliability in dynamic systems.

Material & Corrosion Resistance

Constructed from cold-drawn AISI 1045 carbon steel for standard applications, the 16711 Fitting offers an optimal balance of strength and machinability. For enhanced performance, the fitting undergoes a carburizing heat treatment that hardens the surface to 58-62 HRC while maintaining a ductile core, resulting in exceptional wear resistance and fatigue strength. The surface features a zinc-nickel alloy plating with a thickness of 8-12 microns, providing superior corrosion resistance verified through 1,200-hour salt spray testing per ASTM B117. An optional AISI 316 stainless steel version is available for applications requiring maximum resistance to chemical exposure and harsh environments.

Pressure Performance & Hose Compatibility

Engineered for high-pressure hydraulic systems, the 16711 JIC Fitting supports a maximum operating pressure of 6,000 PSI (414 bar) for sizes up to 1", with larger sizes rated at 4,000 PSI (276 bar). It maintains reliable performance across a temperature range of -40°C to 120°C (-40°F to 248°F) for carbon steel versions, with stainless steel variants extending the upper limit to 200°C (392°F). The fitting is compatible with SAE 100 R1, R2, R12, R13, R15, R16, and R17 hydraulic hoses when used with appropriate crimp ferrules, providing versatility across different system configurations. It is available in sizes from -4 (1/4") to -24 (2") in both male and female configurations, including elbows and tees.

Applications

Mobile Hydraulic Systems

In the mobile equipment sector, the 16711 JIC Fitting is widely utilized in construction machinery, agricultural equipment, and commercial vehicles. It provides critical connections between hydraulic hoses and components in systems powering boom cylinders, steering mechanisms, and hydraulic motors that operate under extreme pressure during heavy lifting and earthmoving operations. Its vibration-resistant design withstands the constant mechanical stress encountered in these demanding applications.

Industrial Hydraulic Circuits

Within manufacturing facilities, this high-performance fitting is a key component in hydraulic power units, machine tool hydraulic systems, and automated production lines. It ensures reliable connections in precision hydraulic circuits for metal processing, plastic injection molding, and assembly equipment where consistent pressure control and leak-free operation are essential for maintaining production quality and efficiency.

Oil & Gas Equipment

The 16711 JIC Fitting plays a vital role in hydraulic systems for oil and gas exploration and production equipment, including drilling rigs, wellhead control systems, and pipeline maintenance machinery. Its robust construction and corrosion resistance make it ideal for the harsh operating environments found in upstream and downstream oil and gas operations, where equipment reliability directly impacts operational safety and productivity.

FAQ

What advantages does the 37° JIC design offer over other fitting types?

The 37° JIC design offers several key advantages: the metal-to-metal seal eliminates reliance on elastomeric seals that can degrade over time; the flare design provides greater vibration resistance compared to O-ring face seals; and the conical seating surface allows for slight misalignment during installation while maintaining a proper seal. JIC fittings also offer easier visual verification of proper seating than thread-sealant-dependent designs and can be disassembled and reused more reliably than compression fittings. These characteristics make them particularly well-suited for high-pressure hydraulic systems in mobile and industrial applications.

What crimp specifications are required for hose assembly?

Crimp specifications vary depending on hose type and size, with crimp diameters ranging from 0.55" for -4 (1/4") hoses to 2.35" for -24 (2") hoses. Always refer to the manufacturer's crimp specification chart for your specific hose and fitting combination. Proper crimping requires a calibrated JIC-specific crimping tool to ensure the correct compression of the ferrule onto the hose and fitting. Undercrimping may result in leaks or hose separation under pressure, while overcrimping can damage internal hose structures or fitting components. Crimp dimensions should be verified with a micrometer after assembly.

How does the 16711 Fitting handle hydraulic fluid contamination?

The 16711 JIC Fitting is designed to tolerate moderate levels of hydraulic fluid contamination common in industrial systems. Its carburized surface provides resistance to scoring from particulate contamination, while the flare design allows for limited self-cleaning during assembly and disassembly. For systems with severe contamination issues, we recommend installing high-efficiency filtration (10 micron absolute) to protect all hydraulic components. The fitting's design includes a chamfered entry that helps prevent damage to hose inner liners during assembly, which can be a source of contamination in hydraulic systems.

What maintenance procedures are recommended for optimal performance?

Regular maintenance includes visual inspections for leakage, corrosion, or damage during scheduled system checks. Check crimped connections for signs of hose slippage or ferrule distortion. During system maintenance, inspect flare surfaces for scratches or damage that could compromise the seal. When disconnecting fittings, clean both mating surfaces before reassembly. Apply a thin film of system-compatible anti-seize compound to male threads (avoiding flare surfaces) to prevent galling. For fittings in high-vibration applications, periodic torque verification is recommended, with torque values ranging from 10 ft-lbs for -4 sizes to 95 ft-lbs for -24 sizes.