ISO INTERNATIONAL STANDARD 12240-3 First edition 1998-08-15 Spherical plain bearings - Part 3: Thrust spherical plain bearings Rotuleslisses Partie 3: Rotules lisses axiales ISO Reference number ISO 12240-3:1998(E) ISO 12240-3:1998(E) Foreword (isoO member bodies). The work of preparing International Standards is normally carried out through IsO 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 ElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 12240-3 was prepared by Technical Committee ISO/TC 4, Rolling bearings Subcommittee Sc 7, Spherical plain bearings. ISO 12240 consists of the following parts, under the general title Spherical plain bearings: Part 1: Radial spherical plain bearings Part 2: Angular contact radial spherical plain bearings Part 3: Thrust spherical plain bearings Part 4: Spherical plain bearing rod ends @ISO1998 All rights reserved. Unless otherwise specified, 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. InternationalOrganizationforStandardization Case postale 56 · CH-1211 Geneve 20 · Switzerland Internet [email protected] Printed in Switzerland ii INTERNATIONAL STANDARD @ISO ISO 12240-3:1998(E) Spherical plain bearings Part 3: Thrust spherical plain bearings 1 Scope This part of Iso 12240 specifies dimensions and tolerances for thrust spherical plain bearings. The specified tolerance values apply to finished, thrust spherical plain bearings before any coating or plating. Thrust spherical plain bearings need not conform to the design illustrated but compliance is required as regards dimensions and tolerances specified. NOTE - Thrust spherical plain bearings for airframe applications are not covered by this part of ISO 12240. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of isO 12240. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of isO 12240 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 582 : 1995, Rolling bearings-Chamfer dimensions-Maximum values. ISO 6811:1998, Spherical plain bearings - Vocabulary 3 Definitions and symbols For the purposes of this part of ISO 12240, the definitions given in ISO 1132-1 and ISO 6811 apply. The symbols (except those for tolerances) shown in figure 1 and the values given in the tables denote nominal dimensions unlessspecifiedotherwise. B Shaft washer height c Housing washer height D Outside diameter D1 Bore diameter of housing washer d Bore diameter 1) To be published. (Revision of ISO 1132:1980)