47-/S 6626-89 14851903 0076822 6 INTERNATIONAL ISO STANDARD 6626 First edition 1989-07-01 Internal combustion engines - Piston rings Coil-spring-loaded oil control rings Moteursa combustion interne-Segments de piston - Segments racleurs regulateurs d'huile mis Reference number ISO 6626:1989 (E) CopYRIGHT International Organization for Standardization Licensed by Information Handling Services 14851903 0076823 8 6626-89 ISO6626:1989(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, govern- mental 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. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the Iso Council. They are approved in accordance with ISo procedures requiring at least 75 % approval by the member bodies voting. International Standard 1SO 6626 was prepared by Technical Committee 1SO/TC 22, Road vehicles. Usersshould notethatall International Standardsundergo revisionfromtimetotime and that any reference made hereinto any otherInternational Standard implies its latestedition,unlessotherwisestated. ISO1989 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 Casepostale56.CH-1211Geneve20·Switzerland Printed in Switzerland ii COPYRIGHTInternational Organization for Standa Licensed_byInformation HandlingServices 69-9299 29200E06T5 ISO6626:1989 (E) Contents Page introduction Scope and field of application . 2 References 3 Piston ring types and designation examples 2 Commonfeatures 9 Coil spring 11 6 Tangential force and nominal contact pressure 12 7 Dimensions (tables 9 to 20) 16 ili CopPYRIGHT International Organization for Standardization Licensed by Information Handling Services