ISO INTERNATIONAL STANDARD 484-2 Second edition 2015-12-01 Shipbuilding Ship screw propellers - Manufacturing tolerances Part 2: Propellers of diameter between 0,80 and 2,50 m inclusive Construction navale - Hélices de navires - Tolérances de fabrication- Partie 2: Helices de diametre compris entre 0,80 et 2,50 m inclus Reference number IS0 484-2:2015(E) ISO International Organization for Standardization @ IS0 2015 IS0 484-2:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2015, Published in Switzerland All rights reserved. Unless otherwise specified, 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. ISOcopyrightoffice Ch. de Blandonnet 8 · CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Internatinai br DrganizationforStandardization Licensee-ZHEJIANG INST OF STANDARDIZAISQ 0d5 - All rights reserved Not for Resale, 2016/3/29 05:30:59 networking permited withoutlicense from IHS IS0 484-2:2015(E) Contents Page Foreword ..iv Introduction .V 1 Scope. ..1 2 Normative references ..1 3 Field of application .1 4 Methods of measuring pitch .1 4.1.1 Use of marking gauges 1 4.1.2 Method with a graduated ring. 1 4.1.3 Method using coordinate measuring machine. ..2 5 Methods of measuring the thickness of the section .2 6 Accuracy classes .3 7 Tolerances on the pitch ..4 8 Tolerances on the extreme radius of the screw propeller ..5 9 Tolerances on the thickness of the blade section ..5 10 Checking and tolerances of the form of blade sections ..6 11 Tolerances of the length of the blade sections. 12 Tolerances on the location of blades, reference lines, and blade contours 12.1 Marking of lines of reference. ..8 12.2 Tolerances on the contour of the leading edge . 12.3 Tolerances on the angular deviation between two consecutive blades 10 13 Tolerances on rake, axial position, and relative axial position of consecutive blades ..10 14 Surface finish ..11 15 Static balancing. ..11 16 Measuring equipment .12 Bibliography ..13 ii thout license from IHS