Help identifying hydraulic fittings. JIC and ORB
- Thread starter chad22
- Start date
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Discount Hydraulic Hose
Silver Member, Advertiser
Joe, since his equipment has SAE Straight Thread (ORB) ports, none of the hoses shown on the pages you linked to would connect directly to those ports. All of the hoses shown in your linked pages have JIC, NPT or ORFS fittings.
There are hose fittings with male ORB threads, but not very many pre-assembled hoses available with these fittings. One would have to either have a custom hose made to their specifications, or use an adapter as the others have discussed here.
The combination of JIC female swivel hose fittings and adapters (commonly available in JIC x NPT or JIC x ORB) is very popular and even recommended for many applications.
Discount Hydraulic Hose
Silver Member, Advertiser
Since I'm responsible for that listing, I guess I can answer this question as well as anyone.
The ORB stands for "O-Ring Boss" and is also known as SAE Straight Thread, which many users shorten to just "SAE." This thread is usually identified by (you guessed it) the O-ring that sites between the hex nut and thread.
Here is something everyone should know about JIC and ORB fittings. Their nominal size usually does not refer to the thread diameter. Most people who work with hydraulic fittings will identify them as 1/2" or 3/8", etc., according to the tube, port or pipe for which that fitting was designed.
For example, JIC 37 degree flare fittings were originally designed for connecting metal tubing. As such, the nominal size of a JIC fittings refers to outside diameter of the tubing. In a similar fashion, 1/2" NPT fittings refer to inside diameter of the pipe.
Just so you don't think I'm crazy, you read that correctly. Tubing is identified by OUTSIDE diameter, while pipe and hose are identified by INSIDE diameter. That can be a little confusing in the beginning, but once you commit it to memory, you will have a much easier time identifying materials.
The actual thread diameter will always be a bit larger than the nominal (tube or pipe) size. Using the eBay listing as an example, the fittings are identified as 1/2" JIC, and can be used with 1/2" tubing, but don't be fooled. These fittings have a 3/4-16 UNF thread.
When someone tells me they want a 1/2" fitting, I always ask them to clarify whether they are referring to the tube size or the thread size. It is very important to remember this when you are specifying fittings.
We have a thread size reference page available at DiscountHydraulicHose.com.
This page currently only shows data for U.S. fittings, but I plan to update it soon with threads from Europe and Asia as well.
kennyd
Advertiser
Since I'm responsible for that listing, I guess I can answer this question as well as anyone.
The ORB stands for "O-Ring Boss" and is also known as SAE Straight Thread, which many users shorten to just "SAE." This thread is usually identified by (you guessed it) the O-ring that sites between the hex nut and thread.
Here is something everyone should know about JIC and ORB fittings. Their nominal size usually does not refer to the thread diameter. Most people who work with hydraulic fittings will identify them as 1/2" or 3/8", etc., according to the tube, port or pipe for which that fitting was designed.
For example, JIC 37 degree flare fittings were originally designed for connecting metal tubing. As such, the nominal size of a JIC fittings refers to outside diameter of the tubing. In a similar fashion, 1/2" NPT fittings refer to inside diameter of the pipe.
Just so you don't think I'm crazy, you read that correctly. Tubing is identified by OUTSIDE diameter, while pipe and hose are identified by INSIDE diameter. That can be a little confusing in the beginning, but once you commit it to memory, you will have a much easier time identifying materials.
The actual thread diameter will always be a bit larger than the nominal (tube or pipe) size. Using the eBay listing as an example, the fittings are identified as 1/2" JIC, and can be used with 1/2" tubing, but don't be fooled. These fittings have a 3/4-16 UNF thread.
When someone tells me they want a 1/2" fitting, I always ask them to clarify whether they are referring to the tube size or the thread size. It is very important to remember this when you are specifying fittings.
We have a thread size reference page available at DiscountHydraulicHose.com.
This page currently only shows data for U.S. fittings, but I plan to update it soon with threads from Europe and Asia as well.
Good info HHG. I edited my post above based on the info you gave me in the PM
OP
chad22
Veteran Member
Thanks everyone. I found the correct adapters for my hose to fit the valve at Orscheln. I also picked up one cylinder there. This way I can measure out and weld up all my brackets for the rest of the cylinders.
I figure I'll buy one cylinder at a time "Money Permitting". lol
Chad
I figure I'll buy one cylinder at a time "Money Permitting". lol
Chad
Chilly807
Elite Member
Chad,
Have a look at Hyspec cylinders. I just added one to my rear blade. One of the local hydraulic shops commented that they were a decent cylinder for the money (not the place I bought it from).
It was 30% less at an actual hydraulic shop than Princess Auto (our version of TSC or Harbor Freight).
Sean
Have a look at Hyspec cylinders. I just added one to my rear blade. One of the local hydraulic shops commented that they were a decent cylinder for the money (not the place I bought it from).
It was 30% less at an actual hydraulic shop than Princess Auto (our version of TSC or Harbor Freight).
Sean