SIST EN ISO 8826-1:1998

Technical drawings - Rolling bearings - Part 1: General simplified representation (ISO 8826-1:1989)

The principle of the drawing method in this part is that only essential features are shown, preferably in outline. The degree of simplification depends on the kind of object represented, the scale of the drawing and the purpose of the documentation. Part 2 deals with the detailed simplified representation.

Technische Zeichnungen - Wälzlager - Teil 1: Allgemeine vereinfachte Darstellung (ISO 8826-1:1989)

Dieser Teil von ISO 8826 legt Regeln für die allgemeine, vereinfachte Darstellung von Wälzlagern fest. Diese Darstellung ist anzuwenden, wenn es nicht nötig ist, die genaue Form und die Einzelheiten der Wälzlager zu zeigen, z.B. in Zusammenbau-Zeichnungen.

Dessins techniques - Roulements - Partie 1: Représentation simplifiée générale (ISO 8826-1:1989)

La présente partie de l'ISO 8826 prescrit la représentation simplifiée générale des roulements. Il convient d'utiliser cette représentation lorsqu'il n'est pas important de montrer la forme exacte et les détails du roulement, par exemple dans des dessins d'assemblage.

Tehnične risbe - Kotalni ležaji - 1. del: Splošno poenostavljeno prikazovanje (ISO 8826-1:1989)

General Information

• Status: Published
• Publication Date: 30-Apr-1998
• ICS: 01.100.20 - Mechanical engineering drawings
• ICS: 21.100.20 - Rolling bearings
• Technical Committee: TRS - Technical drawings, quantities, units, symbols and graphical symbols
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-May-1998
• Due Date: 01-May-1998
• Completion Date: 01-May-1998
• Ref Project: EN ISO 8826-1:1995 - Technical drawings - Rolling bearings - Part 1: General simplified representation (ISO 8826-1:1989)

Overview

SIST EN ISO 8826-1:1998, titled Technical drawings - Rolling bearings - Part 1: General simplified representation, is a European adoption of the international ISO 8826-1:1989 standard. Published by CEN, this standard defines the principles for simplified graphical representation of rolling bearings in technical drawings. Its core aim is to facilitate clear and efficient communication in mechanical engineering documentation by focusing on essential features of bearings without unnecessary detail.

This part 1 of ISO 8826 sets out guidelines that prioritize simplicity and clarity, favoring outline representations over complex details. It serves as the foundational framework for engineers, designers, and draftsmen when illustrating rolling bearings-crucial components in mechanical systems-especially in assembly contexts or where precise bearing details are not required.

Key Topics

• Scope of Representation
  EN ISO 8826-1 emphasizes that only essential features of rolling bearings be shown in drawings, primarily through simplified outlines. This approach reduces drawing complexity and improves readability in engineering documents.

• General Simplified Representation
  Bearings are depicted using a minimalistic design: commonly a square with a free-standing, centered upright cross that does not touch the square’s outline. This symbolic representation is suitable for assembly drawings or technical documentation where bearing load-bearing characteristics or exact contours are not critical.

• Drawing Principles

  • Line Thickness and Type: Simplified bearing features use the same line thickness as other visible outlines in the current drawing, following ISO 128 guidelines for line types.
  • Scale Consistency: The simplified bearing outline must be drawn to the same scale as the rest of the technical drawing, ensuring proportionality and coherence.
  • Avoidance of Hatching: Generally, hatching is discouraged in simplified representations to maintain clarity. Exceptions occur only for detailed illustrations or catalogs per ISO 8826-2.

• Purpose-Driven Detailing
  The degree of simplification depends on the object type, drawing scale, and documentation purpose. For more detailed depiction of bearing features-such as rolling element rows or alignment capabilities-part 2 of the standard (detailed simplified representation) should be applied.

• Standard Normative References
  EN ISO 8826-1 complements established drawing principles such as ISO 128, which provides general rules on drawing presentation and line use, ensuring harmonization across mechanical engineering standards.

Applications

• Mechanical Engineering Drawings
  Practitioners use EN ISO 8826-1 for consistent and standardized depictions of rolling bearings in machine design, assembly instructions, and maintenance documentation.

• Assembly and Installation Guides
  Simplified symbols help technicians quickly identify bearing locations without unnecessary distractions, enhancing the clarity of assembly drawings.

• Technical Catalogs and Documentation
  Manufacturers can apply the standard to produce catalogs with illustrative, easy-to-understand bearing representations, aiding customers in product selection and specification.

• CAD and Drafting Software Implementation
  CAD tools adopt these simplified drawing rules to automatically generate bearing symbols, improving uniformity and reducing drafting time.

• Cross-Disciplinary Cooperation
  Ensures common understanding of bearing representations among mechanical engineers, designers, suppliers, and quality inspectors worldwide.

Related Standards

• EN ISO 8826-2: Technical drawings - Rolling bearings - Part 2: Detailed simplified representation
  Provides rules for more detailed bearing illustrations when specific feature depiction is necessary.

• ISO 128: Technical drawings - General principles of presentation
  Serves as the foundational standard governing line types, thicknesses, and other drawing conventions referenced by EN ISO 8826-1.

• ISO/TC 10:
  The technical committee responsible for standardizing technical drawings, including those of rolling bearings.

• International Electrotechnical Commission (IEC):
  Often collaborates with ISO to harmonize electrotechnical and mechanical engineering standards.

By adhering to SIST EN ISO 8826-1:1998, organizations and professionals ensure consistency, clarity, and efficiency in the representation of rolling bearings on technical drawings, which enhances communication and reduces errors throughout product development and maintenance cycles.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-1998
7HKQLþQHULVEH.RWDOQLOHåDMLGHO6SORãQRSRHQRVWDYOMHQRSULND]RYDQMH,62

Technical drawings - Rolling bearings - Part 1: General simplified representation (ISO
8826-1:1989)
Technische Zeichnungen - Wälzlager - Teil 1: Allgemeine vereinfachte Darstellung (ISO
8826-1:1989)
Dessins techniques - Roulements - Partie 1: Représentation simplifiée générale (ISO
8826-1:1989)
Ta slovenski standard je istoveten z: EN ISO 8826-1:1995
ICS:
01.100.20 Konstrukcijske risbe Mechanical engineering
drawings
21.100.20 Kotalni ležaji Rolling bearings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

IS0
INTERNATIONAL
8826-l
STANDARD
First edition
1989-08-01
Technical drawings - Rolling bearings -
Part 1:
General simplified representation
Desks techniques - Roulements -
Partie 1: Rep&en ta tion simpfifide g&n&ale
Reference number
IS0 8826-l : 1989 (E)
IS0 8826-l : 1989 (E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards bodies (IS0 member bodies). The work of preparing International
Standards is normally carried out through IS0 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, govern-
mental and non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission (IEC) on all
matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council. They are approved in accordance with IS0 procedures requiring at
least 75 % approval by the member bodies voting.
International Standard IS0 8826-l was prepared by Technical Committee ISO/TC 10,
Technical drawings.
IS0 8826 will consist of the following parts, under the general title Technical drawings
- Rolling bearings:
-
Part I: General simplified representation
-
Part 2: De tailed simplified representation
0 IS0 1989
All rights reserved. No part of this publication may be reproduced or utilized in any form or by any
means, electronic or mechanical, including photocopying and microfilm, without permission in
writing from the publisher.
International Organization for Standardization
Case postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
ii
IS0 8826-l : 1989 (E)
Introduction
IS0 8826 provides rules for the simplified representation of rolling bearings.
The principle of drawing practice is to depict the object to scale using lines. In
simplified representations, only essential features are shown, preferably in outline (in
order to save time and effort).
The degree of simplification depends on the kind of object represented, the scale of the
drawing and the purpose of the
...