positional tolerance callout ? Idea
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Posted by: inspken ®

07/02/2010, 09:25:56

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I have a print that calls out a positional tolerance of .004 dia nothin else what is my tolerance boundries for x and y ?







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: positional tolerance callout ?
: positional tolerance callout ? -- inspken
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Dimensioning & Tolerancing GD&T Forum
Posted by: Kelly Bramble ®

07/02/2010, 10:00:23

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You need to post a picture..

My answer based on an estimation of what you have is:

The position tolerance is diametric, therefore the as-built feature (whatever it is) center element (axis for hole or pin) can be offsett in any direction from perfect .002.

The .002 is the radius of the .004 diameter, so it is similar to +/-.002 in any direction (up, down, east, west, NE, NW, etc..).

There should be a basic dimension(s) or centerline indicating the relationship to the datum reference.

A basic dimension is a dimension contained within a box without tolerances.

See: Geometric Boundaries IV, ASME Y14.5-2018







Modified by Kelly Bramble at Fri, Jul 02, 2010, 10:05:39


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