ISO INTERNATIONAL STANDARD 839-1 Second edition 2006-12-01 Milling machine arbors with 7/24 tapers - Part 1: Dimensions and designation Arbres porte-fraises au cone 7/24- Partie 1: Dimensions et désignation Reference number ISO 839-1:2006(E) @ISO 2006 ISO 839-1:2006(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF fle can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO2006 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @ Iso 2006 - All rights reserved ISO 839-1:2006(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 International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. The main task of technical committees is to prepare International Standards. 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. Attention is drawn to the possibility that some of the elements of this document may be the subject of paten rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 839-1 was prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 2, High speed steel cutting tools and their attachments. This second edition cancels and replaces the first edition (IsO 839-1:1976), which has been technically revised. IsO 839 consists of the following parts, under the general title Milling machine arbors with 7/24 tapers: Part 1: Dimensions and designation Part 2: Accessories @ ISO 2006 - All rights reserved ili INTERNATIONAL STANDARD ISO 839-1:2006(E) Milling machine arbors with 7/24 tapers - Part 1: Dimensions and designation 1Scope This part of IsO 839 specifies the dimensions of milling machine arbors with 7/24 tapers in accordance with IsO 297. It also specifies the designation of these arbors. NOTE The accessories of these arbors (spacing collars, bearing collars and clamping nuts) are specified in iso 839-2. Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. Iso 297:1988, 7/24 tapers for tool shanks for manual changing IsO 2768-1:1989, General tolerances — Part 1: Tolerances for linear and angular dimensions without individual tolerance indications 3Choice of dimensions and tolerances The diameters, which have been adopted in this part of IsO 839 as the most commonly used, correspond to the values given in IS0 240 from 16 mm to 100 m