-6 Crimp Hydraulic Hose Fittings with JIC Connection (2024)

FAQs

What happens if you over crimp a hydraulic hose? ›

Under-crimping can cause the end to blow off during operation, and over-crimping can crush the hose blocking fluid and weakening the construction. Crimping errors might not always be visible to the naked eye, so always check the crimp specs with a caliper before approving the finished product.

Once aligned, tighten the nut until it is "firm" against the washer and o-ring, with the nut becoming snug with a feel of metal-on-metal in less than one revolution. Over-tightening causes as many leaks as under-tightening.

JIC (or Joint Industry Council) fittings, defined by SAE J514, are compression fittings machined with a 37 degree flare seating surface and parallel threads. They are commonly manufactured in nickel alloys, brass, carbon & stainless steel. JIC Fitting hydraulic connections are common in most fluid power systems.

Crimp your own hydraulic hoses with the Parkrimp hose crimper. Just as important as choosing the right hose for your application, it is just as important to crimp the hose correctly. Choosing the right hose for the right temperature and pressure does not help much if the hose is crimped and installed incorrectly.

If the fitting is found to be in good condition and has been handled correctly, it can be reused safely. But before reusing the fittings, they must be thoroughly cleaned to ensure no debris or dirt can cause leaks.

There are basic principles in how to seal hydraulic fittings. In short, it's okay to use Teflon tape on NPT threads and Loctite 5452 thread sealant on NPT or JIC fittings. However, there is no need to use any type of sealant on JIC 37-degree flare fittings and most O-ring connections.

A hydraulic crimper is a tool used to connect the ends of two cables, wires, or other similarly flexible materials such as hydraulic hoses to a matching hose end. This tool allows the user to create crimped connections through a hydraulic fluid mechanism to transfer force from the user to the tool.

Hydraulic hose abrasion is a very common cause of hydraulic hose failure, particularly in extreme working environments where machines are expected to carry out thousands of cycles each and every day. It is inevitable that hoses that do come in contact with any machine surfaces will experience some shape of abrasion.

Thread the hose end or adapter nut onto the fitting until it cannot be tightened by hand any further. Lightly tighten the nut with a wrench (approximately 30 in. lbs.) making sure it does not bind; this is also known as tightening until wrench resistance.

JIC (Joint Industry Council) fittings are widely used in fuel delivery and fluid power applications, especially where high pressure (up to 10,000 pounds per square inch (690 bar)) is involved.

Why do hydraulic fittings leak? ›

Missing or damaged O-ring, or over/under-torqued fittings can also cause leaks as the seal will not align properly. Over/under torquing can lead to damaged threads, which almost certainly leads to leaks.

JIC fittings (aka SAE 37° tube fittings, flared fittings, or SAE J514 fittings ) are the most popular hydraulic fluid connector in North America.

Don't Cross-Apply Fittings: While both fittings utilize the same thread size, the thread shapes of JIC and AN fittings are not the same.

The tip taper angle of 37° is the main defining feature for identifying JIC fittings.

There are basic principles in how to seal hydraulic fittings. In short, it's okay to use Teflon tape on NPT threads and Loctite 5452 thread sealant on NPT or JIC fittings. However, there is no need to use any type of sealant on JIC 37-degree flare fittings and most O-ring connections.

A hydraulic crimper is a tool used to connect the ends of two cables, wires, or other similarly flexible materials such as hydraulic hoses to a matching hose end. This tool allows the user to create crimped connections through a hydraulic fluid mechanism to transfer force from the user to the tool.

Clamps, bent-tube couplings, nylon ties, spring guards, and sleeving can be used to keep hose away from abrasive sources. High- and medium-abrasion resistant covers as well as protective sleeving can also be used to protect hose covers from abrasion. In addition, it is important to avoid straining hose.