Clarification of ISO 2768-1 - Inside bend radius tolerance - Metal stamped part

[jager]

I haven't been here on the forum in a long time. I hope to spend some time getting caught up on the latest threads. Here is my problem:

I am trying to find the correct general tolerance for an inside bend radius on a metal stamped part. The dimension is R 2mm and I'm not sure if the tolerance is ± 0.1 or ± 0.2. The print references ISO 2768-1 class m and ISO 2768-2 class K. I'd appreciate any help.
The standards are not clear on radii.
Thanks!

 

[Dean Frederickson]

Re: Clarification of ISO 2768-1, radius tol.

Check this out.
[PDF]
STANDARD ISO 2768–1
File Format: PDF/Adobe Acrobat
Tolerance class. Permissible deviations for basic size range ... Indication on drawing – example (medium): ISO 2768-m alternatively SS-ISO 2768-1 m.
www.ams-prototipi.it/webfiles/iso.pdf - Similar pages
Or this one.
[PDF]
ISO 2768-2
File Format: PDF/Adobe Acrobat - View as HTML
ISO 2768-2. Forbehold for fejl. Range of specified size in mm ... K. L. 0,5. 0,6 . 0,8. 1. 0,6. 1. 1,5. 2. Tolerance. class ...
www.isoform.dk/upload/iso_2768-2.pdf - Similar pages

 

[jager]

Re: Clarification of ISO 2768-1, radius tol.

Thanks. I was hoping it would be ± 0.2 instead of ± 0.1. It says linear and I thought inside radii might not apply....or at least it is a grey area. It has external radii at ± 0.2.