Specifying an SAE port (J1926) - drawing callout
Specifying an SAE port (J1926) - drawing callout
(OP)
I posted this in the piping forum and was advised to post this here...
Hello all:
I did a search and did not find what I was wanted, I think this is a simple question: I am createing a drawing where a -8 threaded fitting will be installed and I need to specify to the machine shop what the machined hole will be. Is it as simple as a leader with "SAE J1926 -8"? I believe there is a tool the machine shop purchases to create these ports or at least rough it out and I would like to properly specify the port. Or do I need to specify all the machining details like here: (http://www.inserta.com/PDF/AI-STR-THD-PORT-DIM.pdf).
Thanks for the help.
Ron
Hello all:
I did a search and did not find what I was wanted, I think this is a simple question: I am createing a drawing where a -8 threaded fitting will be installed and I need to specify to the machine shop what the machined hole will be. Is it as simple as a leader with "SAE J1926 -8"? I believe there is a tool the machine shop purchases to create these ports or at least rough it out and I would like to properly specify the port. Or do I need to specify all the machining details like here: (http://www.inserta.com/PDF/AI-STR-THD-PORT-DIM.pdf).
Thanks for the help.
Ron





RE: Specifying an SAE port (J1926) - drawing callout
Mike Halloran
Pembroke Pines, FL, USA
RE: Specifying an SAE port (J1926) - drawing callout
http://www.inserta.com/PDF/AI-STR-THD-PORT-DIM.pdf
You can also make or buy porting tools to these port forms so that the first operation is the through drill. Then the porting tool cuts the final port shape. The final tool is the threading tap.
Ted
RE: Specifying an SAE port (J1926) - drawing callout
RE: Specifying an SAE port (J1926) - drawing callout
How much you put into the port description depends on your shop's understanding of what you want. Is the manufacturing shop your own or an outside shop? Does the shop know what a -8 port is? Is the port referenced to the finished surface or some other required surface? Concentricity of the port to the fluid passage is implied. Is that what you need or want? Is the common fluid passage size acceptable to your design or do you want a passage larger or smaller?
Specify as much as is necessary for you to get what you require from the shop producing the feature.
Ted
RE: Specifying an SAE port (J1926) - drawing callout
It seems then there is no convention in the form of the callout for an SAE port and I simply need to specify it as an SAE -8 and put in the notes that it is J1926 and be done with it. I have likley over thought the whole thing. :) I appreciate the help Ted et al.
Ron