ISO INTERNATIONAL STANDARD 5289 Third edition 2018-11 Agricultural machinery Endless hexagonal belts and groove sections of corresponding pulleys Machines agricoles - Courroies hexagonales sans fin et profils de gorges des poulies correspondantes Reference number IS0 5289:2018(E) so @ IS0 2018 IS0 5289:2018(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2018 All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Fax: +41 22 749 09 47 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0 2018 - All rights reserved IS0 5289:2018(E) Contents Page Foreword ..iv 1 Scope 2 Normative references ..1 3 Terms and definitions 4 Symbols and abbreviated terms 5 Dimensions and tolerances .2 5.1 Belts. .2 5.1.1 General. .2 5.1.2 Cross-sections ..2 5.1.3 Lengths .3 5.2 Grooved pulleys 4 5.2.1 Pulleys having parallel axes of rotation .4 5.2.2 Pulleys having axes of rotation which are not parallel .4 6 Measurement of lengths of belts .4 6.1 Measuring device ..4 6.2 Procedure. .5 6.3 Groove section of measuring pulleys ..5 7 Calculation of speed ratio, R ..6 7.1 General ..6 7.2 Correction factor for the datum diameter, dd, for pulley grooves according to IS0 4183 (datum system). 7.3 Correction factor for the effective diameter, de, for pulley grooves according to IS0 5291 (effective system). ..7 Bibliography .8 @ IS0 2018 - All rights reserved iii