Bend radius for coax?

[Mike]

Does anyone know what the bend radius for coax would be?

 

[upstatemike]

Usually sites like Belden and West Penn will have detailed specs for their wire. I think bend radius is one of the things they publish.

I think with coax the point is to not compress the dialectric "foam" layer?

 

[upstatemike]

Just checked the Belden site for Quad Shield specs HERE.

Looks like minimum bend radius is 7.3 inches.

 

[Mike]

Thanks. Although in looking through this for coaxial cables (all that they listed) I did not see any with a bend radius of 7.3 inches. Did I miss something that gets modified against the minimum bend radius listed?

 

[upstatemike]

It was on a tech info sheet for quad shield. I can't tell you exactly where I got that number from because their tech info server is down right now. 7.3 seemed kind of large so if the numbers you saw were more reasonable, I would go with those.

 

[Mike]

Ok, I saw 2.5 inches for plenum quad shield, 3 inches for normal quad shield and then a variety of 4 inches for most of the bundled cables and 6.5 inches for the very thin cable that was not labled 'flexible'.

I just wanted to make sure I was not missing something in gathering the number.

Thanks again.

 

[upstatemike]

Your numbers sound more reasonable... I was surprised when I saw the 7.3 figure. I will go back see where I went wrong!

 

[Mike]

Thinking about it in a different way, it does sound 'drastic'

If the radius is 7.3 inches, the diameter is 14.6 inches. A circle with that diameter is only a very slight bend. It would take a large area if you had any turns to remain in spec!

I'm using the 3" value for conduit placement. In this case the number of turns will be limited.

 

[upstatemike]

OK, the Belden link is working again. I went there and searched for RG6. Then I clicked on part number 123092A (quad shield) and scrolled down to the spec on minimum bend radius (right below max. pulling tension).

That's where I saw the 7.3 number.

 

[Mike]

Hmm, that says it is armored. I've never seen that before. I see what you are referring to though.

 

[upstatemike]

Armored? I think I made a bad choice for an example!