ISO INTERNATIONAL STANDARD 8370-1 First edition 1993-10-15 Belt drives -- Dynamic test to determine pitch zone location - Part 1: V-belts Transmissions par courroies Méthode d'essai dynamique de détermination de I'emplacement de la zone primitive d'une courroie - Partie1:Courroiestrapézoidales Reference number ISO8370-1:1993(E) Not for Resale ISO 8370-1:1993(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 represented on that committee. International organizations, governmental and non-governmental, in liaison withisO,alsotakepart inthe work.IsO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. circulated to the member bodies for voting. Publication as an International a vote. ISO/TC 41, Pulleys and belts (including veebelts), 'Sub-Committee SC 1, Veebelts and groovedpulleys. This first edition of ISO 8370-1, together with ISO 8370-2, cancels and replaces IS0 8370:1987, which has been technically revised. IsO 8370 consists of the following parts, under the general title Belt drives Dynamic test to determine pitch zone location: — Part 1: V-belts - Part 2:V-ribbed belts ISO 1993 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 per mission in writing from the publisher. International Organization for Standardization Case Postale 56: CH-1211 Geneve 20: Switzerland Printed in Switzerland ii Not for Resale ISO 8370-1:1993(E) Introduction A V-belt pulley groove is defined by its effective width or datum width When a specific belt is placed in the groove, it will operate with a pitch zone at a finite position relative to the groove. This position needs to be defined for power transmission design calculations. ili CopyrightIntenationalOrganization for Standardization Nrctionwokingmiteithuliceefom Not for Resale