ISO GD&T question

[Jorgenf]

Hi, i have a question regarding concentricity i hope some of you can help me with, i use ISO GD&T

I want 2 concentric circles to have be be toleranced concentric to eachother, to make sure they have the same center according to eachother. How shall this be illustrated? I have atteched a drawing of my idea of it, but the lead engineer disagrees. He says that using this method,there is no established centerpoint, so only one diameter can be toleranced, since the other establishes the centerpoint. But then one of the diameters doesnt have a tolerance, right?

Also shall some of the dimensions then be set as Theoretical exact dimension (TED) if i use general dimensions overall?.

 

[mkcski]

pmarc:

I really appreciate your response. My confidence with ISO improves as I follow this forum. I will be more reserved when I respond to ISO questions so I don't mislead the OP with false information. I also realize you must try to measure the knowledge of the OP from the content of the questions so you don't talk past them and add more confusion.

Certified Sr. GD&T Professional