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1、INTERNATIONAL STANDARD I0 8826-1 First edition 1969-08-01 Technical drawings - Rolling bearings - Part 1: General simplified representation Dessins techniques - Roulements - Partie 1: Reprkenta tion simplifi4e g&t&ale Reference number IS0 8826-l : 1989 (El IS0 6626-l : 1969 (E) Foreword IS0 (the int
2、ernational 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 ha
3、s 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 electrotechnica
4、l 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 mem
5、ber bodies voting. International Standard IS0 6626-l was prepared by Technical Committee ISO/TC 10, Technical drawings. IS0 6626 will consist of the following parts, under the general title Technicaldrawings - Rolling:bearings : - Part 1: Genepal, simplified representation - Part 2: Detailed simplif
6、ied 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 C
7、ase postale 56 l CH-1211 Geneve 20 l Switzerland Printed in Switzerland -,-,- IS0 8826-l : 1989 (E) Introduction IS0 6626 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 representation
8、s, only essential features are shown, preferably in outline fin 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 documentation. This means that either a general simplified representation or a detai
9、led one may be used. A detailed representation shows more details of a rolling bearing, for example the number of rows or the possibility of alignment (see IS0 8826-2). In order to avoid misunderstandings, only one kind of simplification, either the general or the detailed simplified representation,
10、 should be used on a drawing. -,-,- INTERNATIONAL STANDARD IS0 6626-l : 1969 (E) Technical drawings - Rolling bearings - Part 1: General simplified representation 1 Scope 3.3 General simplified representation This part of IS0 8926 specifies the general simplified represen- tation for rolling bearing
11、s. This representation should be used when it is not necessary to show the exact shape and details of the rolling bearing, for example in assembly drawings. For general purposes (without specified load-bearing characteristics or bearing features, where it is not necessary to show the exact contour),
12、 the rolling bearing shall be represented by a square and a free-standing upright cross centred in the square (see figure 1 I. The cross shall not touch the outlines. 2 N.ormative reference The following standard contains provisions which, through reference in this text, constitute provisions of thi
13、s part of IS0 8826. At the time of publication, the editions indicated was valid. All standards are subject to revision, and parties to agreements based on this part of IS0 8826 are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. Members
14、 of IEC and IS0 main- tain registers of currently valid International Standards. IS0 128 : 1982, Technical drawings - General principles of presentation. 3 Method of representation 3.1 Lines All features of the simplified representation shall be drawn with the same line thickness used for all other
15、visible outlines and edges on the drawing (line type A, IS0 128). This representation shall be used in the space on one or both sides of the axis (see for example figure 3, for the case of a horizontal axis). Figure 1 If it is necessary to show the exact contour of a rolling bearing, it should be re
16、presented by the true outline of its cross-section, with the upright cross in a central position (see figure 2). The cross shall not touch the outlines. 3.2 Scale The contour of the simplified representation shall be drawn to the same scale as used for the drawing. Figure 2 -,-,- IS0 6626-I : 1969 (
17、E) In cases where special attention needs to be drawn to the assembly of a rolling bearing, the desired requirements shall be given, for example by text or specification. 4 Hatching In simplified representations, hatching should be avoided. If, in special cases, greater clarity is necessary (for exa
18、mple in more detailed representations or illustrations for catalogues in accordance with IS0 8826-21, all parts of the bearing except the rolling elements, which have the same item reference, should be hatched, in the same direction and with continuous thin lines (type 6, IS0 128) (see figure 4). Pa
19、rts of bearings with different item references may be hatched in different direc- tions and/or with different spacing. Figure 3 Figure 4 -,-,- IS0 6626-l : 1969 (E) UDC 744.4 : 621.622.6/.8 Descriptors : drawings, technical drawings, bearings, rolling bearings, graphic methods Price based on 2 pages -,-,-