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ISO 2678 QUERY
2

thread182-120490

ISO 2678 QUERY

ISO 2678 QUERY

(OP)

Hi Guys,

I understand that ISO 2768-1 is a tolerancing standard for 'linear & angular dimensions'.

Why doesn't it cover radial and diameterical (spelling?) dimensions?

What standard should be referred to for radial dimensions?


Many thanks,

Andy.

RE: ISO 2678 QUERY

ISO 2768-1, Tolerances for linear and angular dimensions without individual tolerance indications
ISO 2768-2, Geometrical tolerances for features without individual tolerance indications

What do you mean by "radial and diameterical dimesnions?"

ISO 2768-2 covers flatness, straightness, circularity, cylindricity, perpendicularity, symmetry, coaxiality, and circular run-out.
These are your form features that don't require datums and orientations that usually only reference one datum.

"Wildfires are dangerous, hard to control, and economically catastrophic."
"Fixed in the next release" should replace "Product First" as the PTC slogan.

Ben Loosli
CAD/CAM System Analyst
Ingersoll-Rand

RE: ISO 2678 QUERY

(OP)
Hi looslib ,

What do you mean by "radial and diameterical dimensions?"

Well ISO-2678 relates to linear and angular dimensions. What if I have a circular bar with a diameter that I want to tolerance to the same standard?

The diameter dimension is not a linear dimension is it?

Thanks,

Andy.

RE: ISO 2678 QUERY

In my interpretation, it would be. How would you tolerance the diameter using ASME Y14.5m-1995?

"Wildfires are dangerous, hard to control, and economically catastrophic."
"Fixed in the next release" should replace "Product First" as the PTC slogan.

Ben Loosli
CAD/CAM System Analyst
Ingersoll-Rand

RE: ISO 2678 QUERY

A diameter dimension is measured linear, point to point across a straight line.

Fill what's empty. Empty what's full. And scratch where it itches.

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