CIRCULARITY/ROUNDNESS TOLERANCE APPLIED
CIRCULARITY/ROUNDNESS TOLERANCE APPLIED
(OP)
Hi guys,
I have a drawing with a Ø1.264±.002 dimension and a roundness tolerance of .025.
my question is: does the roundness tolerance (.025) well applied?, since it is bigger than symetric .002 tolerance part.
can roundness tolerance to be bigger than the size dimension tolerance?
thanks in advanced.
Johny D.
I have a drawing with a Ø1.264±.002 dimension and a roundness tolerance of .025.
my question is: does the roundness tolerance (.025) well applied?, since it is bigger than symetric .002 tolerance part.
can roundness tolerance to be bigger than the size dimension tolerance?
thanks in advanced.
Johny D.





RE: CIRCULARITY/ROUNDNESS TOLERANCE APPLIED
Depending on if rule 1 is invoked (default in ASME) then it might be valid.
If you don't get an adequate answer here, check out forum1103: Drafting Standards, GD&T & Tolerance Analysis.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: CIRCULARITY/ROUNDNESS TOLERANCE APPLIED
So, the tolerance zone for roundness is .025? the dimension is Ø1.264±.002.
If Ø1.266 max and Ø1.262 min. How does the roundness tolerance (.025) apply to the form?
The incoming inspection department thinks that this roundness allows to the part been an ellipse within .025 tolerance. but on that dimensions the part is not functional.
So I thougt that the roundness tolerance it could be wrong by a typo error being .0025 the correct value.
Johny D.
RE: CIRCULARITY/ROUNDNESS TOLERANCE APPLIED
Check out section 6.4.3.1 of the 1994 version. "The circularity tolerance must be less than the size tolerance, except for those parts subject to free state variation."
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: CIRCULARITY/ROUNDNESS TOLERANCE APPLIED
Thanks KENAT, I'll check out this and added as reference on my ECO request.
Regards.
Johny D.
RE: CIRCULARITY/ROUNDNESS TOLERANCE APPLIED
Software For Metalworking
http://closetolerancesoftware.com