EN ISO 2692:2021
(Main)Geometrical product specifications (GPS) - Geometrical tolerancing - Maximum material requirement (MMR), least material requirement (LMR) and reciprocity requirement (RPR) (ISO 2692:2021)
Geometrical product specifications (GPS) - Geometrical tolerancing - Maximum material requirement (MMR), least material requirement (LMR) and reciprocity requirement (RPR) (ISO 2692:2021)
This document defines the maximum material requirement (MMR), the least material requirement (LMR) and the reciprocity requirement (RPR). These requirements can only be applied to linear features of size of cylindrical type or two parallel opposite planes type.
These requirements are often used to control specific functions of workpieces where size and geometry are interdependent, for example to fulfil the functions “assembly of parts” (for MMR) or “minimum wall thickness” (for LMR). However, the MMR and LMR can also be used to fulfil other functional design requirements.
Geometrische Produktspezifikation (GPS) - Geometrische Tolerierung - Maximum-Material-Bedingung (MMR), Minimum-Material-Bedingung (LMR) und Reziprozitätsbedingung (RPR) (ISO 2692:2021)
Dieses Dokument legt die Maximum-Material-Bedingung (MMR), die Minimum-Material-Bedingung (LMR) und die Reziprozitätsbedingung (RPR) fest. Diese Anforderungen können ausschließlich auf lineare Größenmaßelemente der Typen zylindrisch oder zwei parallele gegenüberliegende Ebenen angewendet werden.
Diese Anforderungen dienen oftmals zur Steuerung bestimmter Funktionen von Werkstücken, bei denen Größenmaß und Geometrie voneinander abhängen, beispielsweise zur Erfüllung der Funktionen „Fügbarkeit von Teilen“ (für die MMR) oder „Mindestwandstärke“ (für die LMR). MMR und LMR können jedoch auch zur Erfüllung sonstiger funktionaler Konstruktionsanforderungen genutzt werden.
Spécification géométrique des produits (GPS) - Tolérancement géométrique - Exigence du maximum de matière (MMR), exigence du minimum de matière (LMR) et exigence de réciprocité (RPR) (ISO 2692:2021)
Le présent document définit l’exigence du maximum de matière (MMR), l’exigence du minimum de matière (LMR) et l’exigence de réciprocité (RPR). Ces exigences ne peuvent s’appliquer qu’aux entités dimensionnelles linéaires de type cylindrique ou de type deux plans parallèles opposés.
Ces exigences sont souvent employées afin de contrôler des fonctions spécifiques des pièces où la taille et la géométrie sont interdépendantes, afin d'assurer, par exemple, les fonctions «assemblage des pièces» (dans le cas de la MMR) ou «épaisseur minimale de paroi» (dans le cas de la LMR). Cependant, la MMR et la LMR peuvent également être employées pour respecter d'autres exigences fonctionnelles de conception.
Specifikacija geometrijskih veličin izdelka (GPS) - Tolerance geometrijskih veličin - Zahteva po maksimalnem materialu, zahteva po minimalnem materialu in zahteva po usklajenosti materialov (ISO 2692:2021)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2021
Nadomešča:
SIST EN ISO 2692:2015
Specifikacija geometrijskih veličin izdelka (GPS) - Tolerance geometrijskih veličin -
Zahteva po maksimalnem materialu, zahteva po minimalnem materialu in zahteva
po usklajenosti materialov (ISO 2692:2021)
Geometrical product specifications (GPS) - Geometrical tolerancing - Maximum material
requirement (MMR), least material requirement (LMR) and reciprocity requirement (RPR)
(ISO 2692:2021)
Geometrische Produktspezifikation (GPS) - Geometrische Tolerierung - Maximum-
Material-Bedingung (MMR), Minimum-Material-Bedingung (LMR) und
Reziprozitätsbedingung (RPR) (ISO 2692:2021)
Spécification géométrique des produits (GPS) - Tolérancement géométrique - Exigence
du maximum de matière (MMR), exigence du minimum de matière (LMR) et exigence de
réciprocité (RPR) (ISO 2692:2021)
Ta slovenski standard je istoveten z: EN ISO 2692:2021
ICS:
01.100.20 Konstrukcijske risbe Mechanical engineering
drawings
17.040.40 Specifikacija geometrijskih Geometrical Product
veličin izdelka (GPS) Specification (GPS)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 2692
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2021
EUROPÄISCHE NORM
ICS 01.100.20 Supersedes EN ISO 2692:2014
English Version
Geometrical product specifications (GPS) - Geometrical
tolerancing - Maximum material requirement (MMR), least
material requirement (LMR) and reciprocity requirement
(RPR) (ISO 2692:2021)
Spécification géométrique des produits (GPS) - Geometrische Produktspezifikation (GPS) -
Tolérancement géométrique - Exigence du maximum Geometrische Tolerierung - Maximum-Material-
de matière (MMR), exigence du minimum de matière Bedingung (MMR), Minimum-Material-Bedingung
(LMR) et exigence de réciprocité (RPR) (ISO (LMR) und Reziprozitätsbedingung (RPR) (ISO
2692:2021) 2692:2021)
This European Standard was approved by CEN on 1 June 2021.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 2692:2021 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 2692:2021) has been prepared by Technical Committee ISO/TC 213
"Dimensional and geometrical product specifications and verification" in collaboration with Technical
Committee CEN/TC 290 “Dimensional and geometrical product specification and verification” the
secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by December 2021, and conflicting national standards
shall be withdrawn at the latest by December 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 2692:2014.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 2692:2021 has been approved by CEN as EN ISO 2692:2021 without any modification.
INTERNATIONAL ISO
STANDARD 2692
Fourth edition
2021-06
Geometrical product specifications
(GPS) — Geometrical tolerancing
— Maximum material requirement
(MMR), least material requirement
(LMR) and reciprocity requirement
(RPR)
Spécification géométrique des produits (GPS) — Tolérancement
géométrique — Exigence du maximum de matière (MMR), exigence
du minimum de matière (LMR) et exigence de réciprocité (RPR)
Reference number
ISO 2692:2021(E)
©
ISO 2021
ISO 2692:2021(E)
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
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Published in Switzerland
ii © ISO 2021 – All rights reserved
ISO 2692:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Maximum material requirement (MMR) and least material requirement (LMR) .5
4.1 General . 5
4.1.1 MMVS or LMVS specification . 5
4.1.2 Indirect determination of MMVS or LMVS . 5
4.1.3 Direct indication of MMVS or LMVS . 6
4.1.4 MMR or LMR applied to several toleranced features . 7
4.1.5 Simultaneous requirement . 7
4.1.6 MMR or LMR on a datum without MMR or LMR on the toleranced feature . 7
4.2 Maximum material requirement (MMR) . 7
4.2.1 MMR for toleranced features with indirect determination of virtual size . 7
4.2.2 MMR for related datum features with indirect determination of virtual size . 8
4.2.3 MMR for toleranced features with direct indication of virtual size .10
4.2.4 MMR for related datum features with direct indication of virtual size .10
4.3 Least material requirement (LMR) .11
4.3.1 LMR for toleranced features with indirect determination of virtual size .11
4.3.2 LMR for related datum features with indirect determination of virtual size .12
4.3.3 LMR for toleranced features with direct indication of virtual size .13
4.3.4 LMR for related datum features with direct indication of virtual size .14
5 Reciprocity requirement (RPR) .15
5.1 General .15
5.2 Reciprocity requirement (RPR) and maximum material requirement (MMR) .15
5.3 Reciprocity requirement (RPR) and least material requirement (LMR) .15
Annex A (informative) Examples of tolerancing with , and .16
Annex B (informative) Former practice.48
Annex C (informative) Concept diagram .49
Annex D (informative) Use of symbols for geometrical characteristics with or .51
Annex E (informative) Relation to the GPS matrix model.53
Bibliography .54
ISO 2692:2021(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 213, Dimensional and geometrical product
specifications and verification, in collaboration with the European Committee for Standardization (CEN)
Technical Committee CEN/TC 290, Dimensional and geometrical product specification and verification, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This fourth edition cancels and replaces the third edition (ISO 2692:2014), which has been technically
revised.
The main changes to the previous edition are as follows:
— direct indication of maximum material or least material virtual size has been added (see 4.1.3);
— the use of SZ or CZ symbols has been added (see 4.1.4);
— the use of SIM symbol has been added (see 4.1.5).
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