FINAL INTERNATIONAL ISO/FDIS DRAFT STANDARD 254 ISO/TC 41/SC 1 Belt drives Pulleys Quality, finish Secretariat:AFNOR and balance Voting begins on: 2011-08-26 Transmissions par courroies Poulies - Qualite, état de surface et équilibrage Voting terminates on: 2011-10-26 RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEYARE AWARE AND TO PROVIDE SUPPOR TING DOCUMENTATION. INADDITIONTOTHEIREVALUATIONAS Reference number BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO- LOGICAL, COMMERCIAL AND USER PURPOSES ISO/FDIS 254:2011(E) DRAFT INTERNATIONAL STANDARDS MAY ON ISO OCCASIONHAVE TO BECONSIDEREDINTHE LIGHT OF THEIR POTENTIAL TO BECOME STAN- Copyright International Organization for StandardizationNS. ISO2011 ed by IHS under I without license from IHS Not for Resale ISO/FDIS 254:2011(E) Copyright notice This IsO document is a Draft International Standard and is copyright-protected by ISO. Except as permitted stored in a retrieval system or transmitted in any form or by any means, electronic, photocopying, recording or otherwise, without prior written permission being secured. member body in the country of the requester. ISO copyright office Case postale 56 · CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41227490947 E-mail [email protected] Web www.iso.org Reproduction may be subject to royalty payments or a licensing agreement. Violators may be prosecuted. IsO 2011-All rights reserved etworking permitted without license from IHS Not for Resale ISO/FDIS 254:2011(E) Foreword SO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEc Directives, Part 2. The main task of technical committees is to prepare International Standards. 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. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. SC 1, Friction. This fourth edition cancels and replaces the third edition (isO 254:1998), of which it constitutes a minor revision In particular, Clause 4 has been technically revised to include test pulleys. ii Not for Resale