SIST EN 22768-1:2000 PDF

Name: SIST EN 22768-1:2000 — General tolerances - Part 1: Tolerances for linear and angular dimensions without individual tolerance indications (ISO 2768-1:1989)
SKU: SIST EN 22768-1:2000
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General tolerances - Part 1: Tolerances for linear and angular dimensions without individual tolerance indications (ISO 2768-1:1989)

Название (английский):

SIST EN 22768-1:2000

General tolerances - Part 1: Tolerances for linear and angular dimensions without individual tolerance indications (ISO 2768-1:1989)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 5
Дата публикации:: 1 декабря 2000 г.
ICS:: 17.040.10
Технический комитет:: SS SPL - Technical Board for the general field

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Описание (английский):

This part is intended to simplify drawing indications and specifies general tolerances in four tolerance classes. It applies to the dimensions of workpieces that are produced by metal removal or are formed from sheet metal. It contains three tables and an informative annex with regard to concepts behind general tolerancing of dimensions.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN 22768-1:1993 (identical with ISO 2768-1:1989) defines general tolerances for linear and angular dimensions that have no individual tolerance indications on drawings. Its purpose is to simplify drawing indications and to provide default tolerance rules for parts produced by metal removal or formed from sheet metal. The part contains three tables of permissible deviations, an informative annex explaining the concepts behind general tolerancing, and guidance on how to declare the tolerancing on drawings.

Key topics and requirements

Scope: Applies to linear dimensions (external/internal sizes, diameters, radii, distances, chamfers) and angular dimensions where no specific tolerance is shown. It excludes auxiliary dimensions in brackets and theoretically exact dimensions.

Tolerance classes: Defines four general tolerance classes - fine, medium, coarse, and very coarse - aligned to customary workshop accuracy. Designers select the class appropriate to function and manufacturing capability.

Reference on drawings: To apply the standard, drawings must state the reference (e.g., “ISO 2768-1”) and the chosen tolerance class in or near the title block.

Tables and annex: Contains three normative tables (linear dimensions, broken edges such as external radii and chamfers, and angular deviations) and an informative Annex A describing the rationale and practical use of general tolerances.

Non-rejection rule: Exceeding a general tolerance does not automatically require rejection if the part’s function is not impaired - inspection decisions should consider functional fit.

Interaction with other standards: If other general tolerance standards apply (e.g., for castings), those must be referenced instead.

Practical applications

Use EN 22768-1:1993 for production drawings where many dimensions do not require tight individual tolerances, such as:

Machined components produced by metal removal
Sheet-metal parts and assemblies
General mechanical parts where standard workshop accuracy suffices

Benefits include clearer drawings, reduced dimension-by-dimension tolerancing work, easier supplier negotiations, and lower inspection burden for non-critical features.

Related standards

ISO 2768-2: Geometrical tolerances for features without individual indications

ISO 8015: Fundamental tolerancing principle

ISO 8062: Dimensional tolerances for castings (parallel guidance where applicable)

Keywords: EN 22768-1:1993, ISO 2768-1:1989, general tolerances, linear and angular dimensions, tolerance classes, drawing indications, sheet metal, machined parts.

SIST EN 22768-1:2000 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Practical applications

Who should use this standard

Related standards

Технические детали

EN 22768-1:1993

General tolerances - Part 1: Tolerances for linear and angular dimensions without individual tolerance indica…

ISO 2768-1:1989

General tolerances — Part 1: Tolerances for linear and angular dimensions without individual tolerance indica…

SIST ISO 2768-1:1999

General tolerances -- Part 1: Tolerances for linear and angular dimensions without individual tolerance indic…

ISO 2768-2:1989

General tolerances — Part 2: Geometrical tolerances for features without individual tolerance indications

SIST EN ISO 8015:2012

Geometrical product specifications (GPS) - Fundamentals - Concepts, principles and rules (ISO 8015:2011)

SIST EN ISO 8062-3:2023

Geometrical product specifications (GPS) - Dimensional and geometrical tolerances for moulded parts - Part 3:…