When you have a worn hydraulic hose fitting, you’ll have to identify exactly which type you have so you know what to order from your supplier.Let’s talk about how to identify hydraulic hose fittings easily.
Firstly, Identifying it’s a permanent or reusable type.
The permanent fittings will be those which are crimped. These are easier and quicker to attach than reusable fittings, and that makes them ideal for applications in the fluid power industry.
Secondly, Identify fitting ends and port connections
Accurate identification of ports and connectors in a hydraulic system is necessary before the correct hose or tube assembly can be assembled and installed.
Next. Identify the sealing method
Hydraulic fittings types mainly depending on size, configuration and thread types. O-ring, mated angle and threaded are the most common type.
O-Ring:
The three types of O-ring seal designs are O-ring boss, flat face O-ring seal and O-ring flange. With these types of couplings, there is an O-ring seal that is the main component in creating the seal.
Mated Angle:
SAE 45° or JIC 37° is typically of a mated angle, BSPP can also be sealed in this way.This kind of fittings have straight or parallel threads for sealing.
Tapered Threads: Male or female are two types of fittings. Male fittings have threads on the outside and female fittings have threads on the inside.NPT(National Pipe Tapered) and BSPT (British Standard Pipe Tapered)are example as below：
Step4:Identify the fitting design:
Look at the location of the O-ring, nose seat, seat angle and fitting termination. You can find the O-ring location as well as the type of nose seat.You need to us seat gauge to determine seat angle.
Mated Angle Seat with O-ring:
O-Ring Face Seal:
Mechanical Joint or Mated Angle:
Thread Interface:
Step5:Measuring the thread
Measuring the thread diameter of your fittings,(Outside Diameter (O.D.) of male threads; Inside Diameter (I.D.) of female threads)by calipers. And determine the number of threads per inch by using the thread gauge.Then you will know the thread and size of the fittings in your side.
QC Hydraulics is a good choice if you have any questions or demands of hydraulic hose fittings and adapters.We can supply most kinds of hydraulic fittings.Including NPT/NPTF, JIC, SAE,DIN, JIS and BSP thread. Customized products are available in ou company.