ANSI Y14.5-1994 interpretation

[corvettee]

What is the meaning of "MR"?
It used to be Full Rad then added CR for Controlled Radius.
I have a customer who dimensioned a radius MR

 

[PeterStock]

When I was at Pratt and Whitney over twenty years ago, they used there own GD&T spec.
Radius dimensions were either R or MOD R.
R was like a controled radius, no flats or reversals.
MOD R allowed flats and reversals.
It may be this is what the customer means by MR, you better ask to be sure.

Peter Stockhausen
Pollak Switching Products

 

[ctopher]

It could be a typo, someone's own abbreviation, or something to do with the bending stresses.

And it's "ASME Y14.5-1994".

Chris
SolidWorks/PDMWorks 08 3.1
AutoCAD 06/08
ctopher's home (updated Jul 13, 2008)

 

[KENAT]

Ask the customer what it means.

I don't see it listed in Fig C-3 or section 1.8 of ASME Y14.5M-1994 and don't recall ever coming across it.

I even checked Y14.38-1999 and while it has 3 options for what MR can be, none of them are relevant (Machine Rifle, Maintenance & Repair, Marble).

I can think of at least 3 things it could be meant to be, Max Radius, Min Radius or Multiple Radii - guessing the wrong one might be problematic.

Again, ask the customer.

KENAT, probably the least qualified checker you'll ever meet...

 

[KENAT]

Chris, I just noticed you dropped an M it's ASME Y14.5M-1994

To the OP if your customer print says ANSI Y14.5-1994 then it's referring to a different (non existent?) spec.

If it doesn't refer to ASME Y14.5M-1994 then you can't necessarily expect an answer to come from there.

KENAT, probably the least qualified checker you'll ever meet...

 

[ctopher]

OOPS! Sorry, I was concentrating on the "MR" I forgot it in the "Y14.5M"! DOH!
It's Friday.....

Chris
SolidWorks/PDMWorks 08 3.1
AutoCAD 06/08
ctopher's home (updated Jul 13, 2008)