GD&T: Concentricity Explained

[@edgarromeroherrera2886]

OMG amazing video, not only for the tecnical information but the whole explanation and the speach were excellent. So useful thank you so much.

[@vinnyq9189]

Never disappointed with your explanation. Good job in explaining everything so details with a good choice of clear words and easy understanding.

[@RDeanOdell]

Thanks so much! I try to explain in my own way, without repeating explanations that are in textbooks.

[@vinnyq9189]

Thanks!

[@darshandg9747]

Thank you for the great video. Could you please let me know where exactly datum A is used to fix the cylinder part??

[@JuanYukopila]

Hey, thanks for your videos. I am trying to find info about the definition of the tolerance value for concentricity. Any one knows where I can find that info? Thanks in advance.

[@NitinSharma-so9hg]

I like you presentation Style ...Good Video...

[@RDeanOdell]

Thankyou!

[@letsgosurfingdude]

MINUTE 3:56 - Do you have to initially set up the indicator with respect to Axis of datum feature A to measure the X points? I think we would have to zero out the indicator at Axis of datum feature A, then measure the two points and then divide by 2 to see if the median point fell above or below the axis. Does a CMM machine zero out at Axis of datum feature A? What CMM machine do you recommend?

[@waiguoren]

This is great, thanks!

[@RDeanOdell]

Thanks so much!

[@erinanurmawanti7759]

if cylindricity and concentricity are given in a component, then is the cylindricity geometry included in the stack.please give me an ekplanation sir

[@RDeanOdell]

Hi, in any case I can think of, the form tolerance cylindricity would be ignored for the purposes of fit and shift. The concentricity can be treated like position in your stack.

[@erinanurmawanti7759]

Thank you much much for your explanation sir.sir, there are case, two component have same size tolerance plus minus 0.2.and both component at MMC.please sir give explanation about the stack.i have confused the stack cause both component at MMC so the tolerance zone both component huddle together.thank you sir

[@vmcprogramming]

Very well explained

[@RDeanOdell]

Thank you!

[@manjunathsb6790]

Hi Dean, is concentricity has been removed in the latest ASME revision ..? Could you please make video on tolerance stack up analysis by considering GD&T symbols

[@RDeanOdell]

Yes, the most recent ASME Y14.5 standard removed concentricity and symmetry. Let me see what I can do about more tolerance stackup videos.

[@learnkartmechanical1309]

Thanks for vid, Can you please explain datum A-B Means in gd&t with example

[@RDeanOdell]

Yes, I’m am working on a video about Runout where I will address your question in detail. Stay tuned.

[@MohanRaj-lj6rp]

Sir can you recommended books for gauge design and gauge making

[@karthicks4504]

Hello nice explanation but I have one question even though concentricity control axis which means fos but why we can't use modifiers ?

[@mauriceoyanadel4170]

I got a drawing or an rfq that I am trying to figure out thank u for your explanation

[@wilzonsaeed1282]

Mr Odell, is concentricity and ecentricity is same thing? thanks for the videos.

[@RDeanOdell]

Hi, eccentricity is when axises are not aligned. Normally this would be toleranced with position or profile.

[@90sspecialsongsmelody19]

If dia symbol not given for concentricity value ,what does this mean?

[@arundaniel6127]

Thank you

[@RDeanOdell]

You are welcome! Thanks for watching.

[@crazyingenieur3277]

Wow, this is wrong!!! There is a big difference between Derived Median Line and the Median Points in Concentricity (1:40 - 1:56 in the video): Derived Medial Line: Each cross section has ONLY ONE point... Multiple section makes multiple points... If you take infinite number of sections, you get infinite number of points.. and these points would make a curve... and this curve is called Derived Medial Line.... so for short, derived median line is a curve. Median Points in Concentricity: Each cross section has MULTIPLE median points.. you can theoretically take infinite number of points in EACH section, and these points would make a closed curve... and if we do this for infinite number of sections.... and then combine all those closed curves, you would get a surface (like an imperfect pipe). So in a nutshell, Derived Median Line is a curve... Median Points in Concentricity is a surface --> HUGE DIFFERENCE. They are not the same as it is claimed in this video!