ISO INTERNATIONAL STANDARD 14218 First edition 1998-05-15 Aerospace Airframe ball bearings, single-row, self-aligning, sealed, heavy duty Inch series Aéronautique et espace Roulements pour structures d'aeronefs: roulements, a rotule, sur une rangee de billes, avec joints d'etancheite, seérie lourdeSérie en inches ISO Reference number ISO14218:1998(E) ISO14218:1998(E) Foreword memberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedout throughIsOtechnical committees. Each member body interested in a subject for which a technical committee has been established has liaison with ISO, a also take part in the work. isO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Subcommittee SC 15, Airframe bearings. AnnexAofthisInternationalStandardisforinformationonly ISO1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic International Organization for Standardization Casepostale56:CH-1211Geneve20·Switzerland Internet [email protected] X.400 C=ch; a=400net; p=iso; o=isocs; S=central Printed inSwitzerland ii ISO14218:1998(E) Introduction At the time this International Standard was developed, the Imperial unit sizes of airframe ball bearings were dominant in world application. The basis for this International Standard is the Imperial units provided in annex A. For new applications, the use of metric series airframe ball bearings is encouraged.