BS ISO 5291:2011 BSl Standards Publication Belt drives Grooved pulleys for joined classical V-belts - Groove sections AJ, BJ, CJ and DJ (effective system) bsi. ..making excellence a habit: BS ISO 5291:2011 BRITISH STANDARD National foreword This British Standard is the UK implementation of IS0 5291:2011. The UK participation in its preparation was entrusted to Technical Committee MCE/10, Belts & Pulley Drive. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. @ The British Standards Institution 2012 ISBN9780580706011 ICS 21.220.10 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2012. Amendments issued since publication Date Text affected BS ISO 5291:2011 ISO INTERNATIONAL STANDARD 5291 Third edition 2011-12-15 Belt drives Grooved pulleys for joined classical V-belts Groove sections AJ, BJ, CJ and DJ (effective system) Transmissionsparcourroies-Pouliesagorgespourcourroies trapezoidales jumelees classiques-Sections de gorge AJ, BJ, CJ et DJ (systeme effectif) Referencenumber ISO 5291:2011(E) @ISO 2011 BS ISO 5291:2011 ISO 5291:2011(E) COPYRIGHTPROTECTEDDOCUMENT ? ISO 2011 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 either Iso at the address below or Iso's member body in the country of the requester. ISO copyright office Casepostale 56.CH-1211Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @ ISO 2011 - All rights reserved BS ISO 5291:2011 ISO 5291:2011(E) Foreword ISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies non-governmental, in liaison with Iso, also take part in the work. Iso collaborates closely with the InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2 International Standard requires approval byat least 75%of thememberbodies casting a vote. rights. IsO shall not be held responsible for identifying any or all such patent rights. SubcommitteeSC 1, Friction. This third edition cancels and replaces the second edition (Iso 5291:1993), of which it constitutes a minor revision. ISO 2011 - All rights reserved ili BS ISO 5291:2011 BS ISO 5291:2011 INTERNATIONALSTANDARD ISO 5291:2011(E) BeltdrivesGroovedpulleysforjoinedclassicalV-belts- GroovesectionsAJ,BJ,CJandDJ(effectivesystem) 1 Scope This International Standard specifies the principal characteristics of grooved pulleys (for groove sections AJ, corresponding joined V-belts considered as a whole. NOTE2 The pitch line position can only be given approximately. The approximate pitch diameter of a pulley can be calculated by the following formula: dp = de - 2be 2 Normativereferences The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IsO254,Beltdrives—Pulleys—Quality,finishandbalance Iso1081,Belt drives-V-beltsandV-ribbedbelts,and correspondinggroovedpulleys-Vocabulary IsO9980:1990,Belt drives—GroovedpulleysforV-belts(systembasedon effectivewidth)- Geometrical inspectionofgrooves 3Terms and definitions and grooved pulleys) apply. 4 Specifications 4.1 Groove profiles 4.1.1 Groove angle, α α = 34° (for groove sections AJ, BJ and CJ only); α = 36° (for groove section DJ only); α= 38° @ ISO 2011 - Allri