Geometrical product specifications (GPS) - Geometrical tolerancing - General geometrical specifications and general size specifications (ISO 22081:2021)

This document gives the rules of definition and interpretation of general specifications defined
according to ISO 8015 (general tolerancing) applicable on the whole workpiece.
The general specifications can be applied to integral surfaces only, i.e. integral lines are
excluded.
The general geometrical and dimensional specifications defined in this document applies to the
following:
- for dimensional specifications:
- for features of size:
- linear size (±) (according to ISO 14405-1);
- angular size (±)(according to ISO 14405-3);
- for geometrical specifications:
- for integral features:
- geometrical specifications with the characteristic surface profile (⌓).

Geometrische Produktspezifikation (GPS) - Geometrische Tolerierung - Allgemeine geometrische und Maßspezifikationen (ISO 22081:2021)

Dieses Dokument gibt Regeln zur Festlegung und Interpretation allgemeiner geometrischer Spezifikationen und allgemeiner Größenmaßspezifikationen nach ISO 8015:2011, 5.12 an.
Allgemeine Spezifikationen, die in anderen Normen festgelegt sind, und der Zusammenhang mit diesen Normen werden in diesem Dokument nicht behandelt.
Die in diesem Dokument festgelegten allgemeinen geometrischen Spezifikationen und allgemeinen (linearen oder Winkel )Größenmaßspezifikationen gelten ausschließlich für integrale Geometrieelemente (einschließlich Größenmaßelemente).
Diese Spezifikationen gelten nicht für abgeleitete Geometrieelemente oder integrale Linien (siehe ISO 17450 1 für die Definitionen von integralen Geometrieelementen und abgeleiteten Geometrieelementen).
Andere Maße als lineare Größenmaße oder Winkelgrößenmaße (siehe ISO 14405 2) werden in diesem Dokument nicht behandelt.

Spécification géométrique des produits (GPS) - Tolérancement géométrique - Spécifications géométriques générales et spécifications de taille générales (ISO 22081:2021)

Specifikacija geometrijskih veličin izdelka (GPS) - Geometrijsko toleriranje - Splošne geometrijske specifikacije in splošne specifikacije velikosti (ISO 22081:2021)

General Information

Status
Published
Public Enquiry End Date
31-Jul-2019
Publication Date
03-Mar-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Mar-2021
Due Date
06-May-2021
Completion Date
04-Mar-2021

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SLOVENSKI STANDARD
SIST EN ISO 22081:2021
01-april-2021
Nadomešča:
SIST EN 22768-2:2000
Specifikacija geometrijskih veličin izdelka (GPS) - Geometrijsko toleriranje -
Splošne geometrijske specifikacije in splošne specifikacije velikosti (ISO
22081:2021)
Geometrical product specifications (GPS) - Geometrical tolerancing - General
geometrical specifications and general size specifications (ISO 22081:2021)
Geometrische Produktspezifikation (GPS) - Geometrische Tolerierung - Allgemeine
geometrische und Maßspezifikationen (ISO 22081:2021)
Spécification géométrique des produits (GPS) - Tolérancement géométrique -
Spécifications géométriques générales et spécifications de taille générales (ISO
22081:2021)
Ta slovenski standard je istoveten z: EN ISO 22081:2021
ICS:
17.040.40 Specifikacija geometrijskih Geometrical Product
veličin izdelka (GPS) Specification (GPS)
SIST EN ISO 22081:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 22081:2021
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SIST EN ISO 22081:2021
EN ISO 22081
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2021
EUROPÄISCHE NORM
ICS 17.040.40 Supersedes EN 22768-2:1993
English Version
Geometrical product specifications (GPS) - Geometrical
tolerancing - General geometrical specifications and
general size specifications (ISO 22081:2021)

Spécification géométrique des produits (GPS) - Geometrische Produktspezifikation (GPS) -

Tolérancement géométrique - Spécifications Geometrische Tolerierung - Allgemeine geometrische

géométriques générales et spécifications de taille und Maßspezifikationen (ISO 22081:2021)

générales (ISO 22081:2021)
This European Standard was approved by CEN on 21 January 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 22081:2021 E

worldwide for CEN national Members.
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SIST EN ISO 22081:2021
EN ISO 22081:2021 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 22081:2021
EN ISO 22081:2021 (E)
European foreword

This document (EN ISO 22081:2021) 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 August 2021, and conflicting national standards shall

be withdrawn at the latest by August 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 22768-2:1993.

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 22081:2021 has been approved by CEN as EN ISO 22081:2021 without any modification.

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SIST EN ISO 22081:2021
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SIST EN ISO 22081:2021
INTERNATIONAL ISO
STANDARD 22081
First edition
2021-02
Geometrical product specifications
(GPS) — Geometrical tolerancing —
General geometrical specifications
and general size specifications
Spécification géométrique des produits (GPS) — Tolérancement
géométrique — Spécifications géométriques générales et
spécifications de taille générales
Reference number
ISO 22081:2021(E)
ISO 2021
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SIST EN ISO 22081:2021
ISO 22081:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© 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

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
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SIST EN ISO 22081:2021
ISO 22081:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Basic principles ...................................................................................................................................................................................................... 2

4.1 General ........................................................................................................................................................................................................... 2

4.2 Basic rule ...................................................................................................................................................................................................... 2

4.3 Indication in a technical product documentation (TPD) .................................................................................... 3

5 General geometrical specification ..................................................................................................................................................... 3

5.1 Rule for indicating the general geometrical specification ................................................................................. 3

5.2 Rule for the applicability of the general geometrical specification ........................................................... 4

5.3 Rules for the datum system .......................................................................................................................................................... 6

6 General size specifications ......................................................................................................................................................................... 7

6.1 Rule for indicating general size specifications ............................................................................................................ 7

6.2 Rule for the applicability of general size specifications ...................................................................................... 7

Annex A (informative) Example of indication with reference to a table in the TPD ...........................................9

Annex B (informative) Examples ...........................................................................................................................................................................10

Annex C (informative) Relation to the GPS matrix model ............................................................................................................13

Bibliography .............................................................................................................................................................................................................................14

© ISO 2021 – All rights reserved iii
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SIST EN ISO 22081:2021
ISO 22081:2021(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 first edition cancels and replaces ISO 2768-2:1989, which has been technically revised.

The main changes to ISO 2768-2:1989 are as follows:

— tools have been added to specify a general geometrical specification and a general size specification;

— the rules for application of general geometrical specification and general size specification have

been clarified.

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.
iv © ISO 2021 – All rights reserved
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SIST EN ISO 22081:2021
ISO 22081:2021(E)
Introduction

This document is a geometrical product specification (GPS) standard and is to be regarded as a general

GPS standard (see ISO 14638). It influences chain links A, B and C of the chain of standards on size,

distance, form, orientation and location.

The ISO/GPS matrix model given in ISO 14638 gives an overview of the ISO/GPS system of which this

document is a part. The fundamental rules of ISO/GPS given in ISO 8015 apply to this document and

the default decision rules given in ISO 14253-1 apply to the specifications made in accordance with this

document, unless otherwise indicated.

For more detailed information of the relation of this document to other standards and the GPS matrix

model, see Annex C.

This document deals with general geometrical specification and general size specifications, which can

be used to reduce the number of individual specification indications in technical product documentation

(TPD). Many geometrical features have individual specifications which are similar or identical. As an

alternative, general geometrical specifications, general size specifications or both may be applied.

All figures in this document for the 2D drawing indications have been drawn in first-angle projection

with dimensions and tolerances in millimetres. It should be understood that third-angle projection

and other units of measurement could have been used equally well without prejudice to the principles

established.

The figures in this document represent either 2D drawing views or 3D axonometric views and

are intended to illustrate how a specification can be fully indicated with visible annotation. For

possibilities of illustrating a specification where elements of the specification may be available through

a query function or other interrogation of information on the 3D CAD model, and rules for attaching

specifications to 3D CAD models, see ISO 16792.

All figures are not complete and should not be seen as a way to fully specify a part. Theoretically exact

dimensions (TED) which are not indicated are assumed to be obtained from the 3D CAD model.

© ISO 2021 – All rights reserved v
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SIST EN ISO 22081:2021
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SIST EN ISO 22081:2021
INTERNATIONAL STANDARD ISO 22081:2021(E)
Geometrical product specifications (GPS) — Geometrical
tolerancing — General geometrical specifications and
general size specifications
1 Scope

This document gives rules for definition and interpretation of general geometrical specifications and

general size specifications defined according to ISO 8015:2011, 5.12.

General specifications defined in other standards, and the link to these standards, are not covered by

this document.

The general geometrical specifications and general size (linear or angular) specifications defined in

this document apply only to integral features (including features of size).

These specifications do not apply to derived features or integral lines (see ISO 17450-1 for the definitions

of integral features and derived features).

Dimensions other than linear or angular sizes (see ISO 14405-2) are not covered by this document.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 8015, Geometrical product specifications (GPS) — Fundamentals — Concepts, principles and rules

ISO 17450-1, Geometrical product specifications (GPS) — General concepts — Part 1: Model for geometrical

...

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