[St...] Posted March 6, 2025 Share Posted March 6, 2025 Would you consider this Concentricity? or Coaxiality? We are having a difference of opinion on this. Link to comment https://qualityforum.zeiss.com/topic/22663-concentricity-vs-coaxiality/ Share on other sites More sharing options...
[Cl...] Posted March 6, 2025 Share Posted March 6, 2025 Concentricity describes how close the axis of two cylindrical or circular features are to each other. IMHO. Link to comment https://qualityforum.zeiss.com/topic/22663-concentricity-vs-coaxiality/#findComment-127773 Share on other sites More sharing options...
[Ke...] Posted March 6, 2025 Share Posted March 6, 2025 If the length of the cylinder is longer than 3 times the diameter, it is evaluated in terms of coaxiality. If the length is shorter than 3 times the diameter, or if there is an ACS symbol, it is evaluated in terms of concentricity. 3 Link to comment https://qualityforum.zeiss.com/topic/22663-concentricity-vs-coaxiality/#findComment-127813 Share on other sites More sharing options...
[na...] Posted March 7, 2025 Share Posted March 7, 2025 Please sign in to view this quote. Can you offer a paragraph from international or national standard supporting the 3 times statement? Link to comment https://qualityforum.zeiss.com/topic/22663-concentricity-vs-coaxiality/#findComment-127827 Share on other sites More sharing options...
[Gu...] Posted March 7, 2025 Share Posted March 7, 2025 I do not understand the difference between coaxiality and concentricity in your case ? I this case, I prefer check straightness of the 2 axis in combined zone because the datum A is too short. 1 Link to comment https://qualityforum.zeiss.com/topic/22663-concentricity-vs-coaxiality/#findComment-127831 Share on other sites More sharing options...
[Da...] Posted March 7, 2025 Share Posted March 7, 2025 Concentricity applies looking down the center axis, coaxiality applies when looking at it from the sides. Link to comment https://qualityforum.zeiss.com/topic/22663-concentricity-vs-coaxiality/#findComment-127849 Share on other sites More sharing options...
[Ke...] Posted March 7, 2025 Share Posted March 7, 2025 https://www.gdandtbasics.com/coaxiality-vs-concentricity-vs-position/ Link to comment https://qualityforum.zeiss.com/topic/22663-concentricity-vs-coaxiality/#findComment-127859 Share on other sites More sharing options...
[To...] Posted March 7, 2025 Share Posted March 7, 2025 Please sign in to view this quote. I am not an ISO expert in any regards, but I am looking forward to the comments from the ISO community on the ACS interpretation. I also don't understand why ISO coaxiality doesn't consider the outer tangential element condition of the considered feature. Link to comment https://qualityforum.zeiss.com/topic/22663-concentricity-vs-coaxiality/#findComment-127869 Share on other sites More sharing options...
[Ke...] Posted March 7, 2025 Share Posted March 7, 2025 Please sign in to view this quote. I'm in the same boat. As described, it looks like they are process controls more than anything else... Link to comment https://qualityforum.zeiss.com/topic/22663-concentricity-vs-coaxiality/#findComment-127873 Share on other sites More sharing options...
[Gu...] Posted March 10, 2025 Share Posted March 10, 2025 Please sign in to view this quote. Thanks a lot for this video ! Never seen the ACS symbol 🙂 Link to comment https://qualityforum.zeiss.com/topic/22663-concentricity-vs-coaxiality/#findComment-127941 Share on other sites More sharing options...
[Ke...] Posted March 11, 2025 Share Posted March 11, 2025 Please sign in to view this quote. Unfortunately, there is no paragraph in the international standard that implies 3 times. Link to comment https://qualityforum.zeiss.com/topic/22663-concentricity-vs-coaxiality/#findComment-128019 Share on other sites More sharing options...
[Ch...] Posted March 11, 2025 Share Posted March 11, 2025 Please sign in to view this quote. This is an unwritten law which is applied in a sensible way in terms of measurement technology🤓 1 Link to comment https://qualityforum.zeiss.com/topic/22663-concentricity-vs-coaxiality/#findComment-128029 Share on other sites More sharing options...
[Cy...] Posted May 6, 2025 Share Posted May 6, 2025 Hello, on your plan it's a coaxiality, it depends how it is draw on your plan. Exemple: Link to comment https://qualityforum.zeiss.com/topic/22663-concentricity-vs-coaxiality/#findComment-131603 Share on other sites More sharing options...
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