ISO INTERNATIONAL STANDARD 21940-14 First edition 2012-07-01 AMENDMENT 1 2022-05 Mechanical vibration Rotor balancing - Part 14: Procedures for assessing balance errors AMENDMENT 1 Vibrations mécaniquesEquilibrage des rotors - Partie 14: Modes operatoires d'évaluation des erreurs d'équilibrage AMENDEMENT1 Reference number IS0 21940-14:2012/Amd.1:2022(E) ISO @ ISO 2022 IS0 21940-14:2012/Amd.1:2022(E) COPYRIGHT PROTECTED DOCUMENT @IS02022 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 orIso'smemberbodyinthecountryoftherequester. ISO copyright office CP401·Ch.deBlandonnet8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email: [email protected] Website: www.iso.org Publishedin Switzerland ii @ IS0 2022 - All rights reserved IS0 21940-14:2012/Amd.1:2022(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 which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with IsO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISo/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of IsO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of any patent rights identified during the development of the document will be in the Introduction and/or on the Iso list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constituteanendorsement. For an explanation of the voluntary nature of standards, the meaning of IsO specific terms and expressions related to conformity assessment, as well as information about Iso's adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html. This document was prepared by Technical Committee ISo/TC 108, Mechanical vibration, shock and conditionmonitoring,SubcommitteeSC2,Measurementandevaluationofmechanicalvibrationandshock as applied to machines, vehicles and structures. A list of all parts in the IS0 21940 series can be found on the ISO website. Any feedback or questions on this document should be directed to the user's national standards body. A complete listing of these bodies can be found at www.iso.org/members.html. ii @ IS0 2022 - All rights reserved