Foreword

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This document was prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 5, Grinding wheels and abrasives.

This fifth edition cancels and replaces the fourth edition (ISO 525:2013), which has been technically revised. The main changes compared to the previous edition are as follows:

— title corrected to be more precise: “Bonded abrasive products – Shape types, designation and marking”;
— scope corrected by deleting bullet point d) for dimensions, limit deviations and tolerances as well as permissible unbalance; requirements for dimensions, limit deviations and tolerances were never specified in ISO 525 but in ISO 13942;
— type of citation of ISO 603, ISO 13942 and ISO 6103 revised to be informative;
— Table 1: symbols revised;
— Table 2: shape types and their designations revised in order to better fit together in terms of language;
— Table 2: addition of new shape types 18B and 18P;
— Table 2: addition of more subtypes to shape types 31, 52, 54 and 90 in accordance with the respective part(s) of ISO 603;
— revision of profiles in 4.2 as well as addition of further profiles;
— former subclauses 5.1, 5.2 and 5.3 deleted;
— former subclause 5.4 revised and moved to be Clause 5;
— revision of Table 3 “Specification” and the following subclauses explaining the elements of Table 3;
— reintroduction of the designation from the edition of 1999 as new Clause 6;
— revision of Clause 7 “Marking”.

Any feedback or questions on this document should be directed to the user’s national standards body. A complete listing of these bodies can be found at www.iso.org/members.html.

BS ISO 525:2020

Bonded abrasive products. Shape types, designation and marking

Current, Under Review

Published:

31 Oct 2020