ISO INTERNATIONAL STANDARD 13778 Second edition 2017-03 Plain bearings Quality assurance of thin-walled half bearings - Selective assembly of bearings to achieve a narrow clearance range Paliers lisses - Assurances qualité des demi-coussinets minces - Assemblage sélectif des paliers pour obtenir un jeu faible Reference number IS0 13778:2017(E) International Organization for Standardization @ IS0 2017 e=ZHEJIANG INST OF STANDARDIZATION C1 5956617 mitted without license from IHS IS0 13778:2017(E) COPYRIGHT PROTECTED DOCUMENT IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org Licensee-ZHEJIANG INST OF STANDARDIZAISQ 017 - All rights reserVed networking permited without license from IHS IS0 13778:2017(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references 3 Terms and definitions 4 Housing swell and thermal expansion 5 Measurement and identification .2 5.1 Housings and journals .2 5.2 Bearings. .2 6 Suggested schemes for fitting .3 6.1 General 3 6.2 Scheme 1: Standard application, without grading .3 6.3 Scheme 2: Grading of bearings.. 4 6.4 Scheme 3: Grading of bearings and journals or housings. .4 6.5 Scheme 4: Unmixed bearings (Matrix scheme) 5 6.6 Scheme 5: Mixed bearings (Matrix scheme) ..6 6.7 Scheme 6: Mixed bearings (fine matrix) 6 Intemaional oganzation @stS2017 - All rights reserved ii icensee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 vided by IHS under I dwithout license from IHS Not for Resale, 2017/5/16 00:33:01