ISO INTERNATIONAL STANDARD 4184 Second edition 1992-12-15 Corrected and reprinted 1993-05-15 Belt drives Classical and narrow V-belts --- Lengths in datum system Transmissions par courroies -- Courroies trapezoidales classiques et étroites-Longueurs dans le systemede reference Reference number ISO 4184:1992(E) CopyightIntemational Organizatin for Standadization d by IHS under licer rking permitted without license from IHS Not for Resale ISO 4184:1992(E) Foreword IsO (the International Organization for Standardization) is a worldwide of preparing international Standards is normally carried out through IsO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmenta! andnon-governmental,inliaisonwithsO,alsotakepartinthework.Iso collaborates closely with the Internationail Electrotechnical Commission (lEC)onallmattersofelectrotechnicalstandardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International a vote. International Standard IsO 4184 was prepared by Technical Committee ISO/TC 41, Pulleys and belts (including veebelts), Sub-Committee SC 1, Veebelts and groovedpulleys. This second edition cancels sandreplaces the first edition (lSO 4184:1980), which has been technically revised. Annex A of this International Standard is for information only. ISO 1992 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 CasePostale56·CH-1211Geneve20+Switzerland Printed in Switzerland ii CopyightIntemational Organizatin for Standardization ed without license from IHS Not for Resale ISO 4184:1992(E) INTERNATIONALSTANDARD Belt drives -- Classical and narrow V-belts Lengths in datum system 1 Scope The V-belts of sections Y, Z, A, B, C, D, E are called classical V-belts and those of sections SPZ. SPA, SPB This International Standard specifies, for classical and and SPC are called narrow V-belts. narrowV-beltsofsections It is important that narrow belts are not used with Y (for groove eprofilewith datum width pulleys uniquely designed for classical belts. 5,3 mm), z (for groove profile with datum width 8,5 mm), 2 Normative references A (for groove profile with datum width 11 mm), The following standards contain provisions which, B (for groove profile with datum width 14 mm), through reference in this text, constitute provisions c of this International Standard. At the time of publi- (for groove profile with datum width 19 mm), cation,the editions indicated werevalid.All standards D (for groove profile with datum width 27 mm), aresubjecttorevision,and parties to agreements based onthisInternational Standard areencouraged E (for groove profile with datum width 32 mm), to investigate the possibility of applying the most re- centeditionsofthestandardsindicatedbelow SPZ (for grooveprofilewithdatumwidth Members of IEC and ISO maintain registers of cur- 8,5 mm), rently valid International Standards. SPA (for groove profile with datum width 11 mm), ISO 3:1973, Preferred numbers - -Seriesofpreferred SPB (for groove profile with datum width 14 mm), numbers. SPC (for groove profile with datum width 19 mm): IS0 1081:1980, Drives using V-belts and grooved pulleys - Terminology. - the recommended datum lengths; ISO 4183:1989, Belt drives -- Classical and narrow - the tolerances for datum lengths; V-belts - Grooved pulleys (system based on datum width). the centre distance variations; ISO 9608:1988, V-belts Uniformity of belts the conditions for measuring the datum length and Centre distance variation - Specifications and test the centre distance variation. method. Copyright International Organization for S