© ISO 2016 Reduction sleeves and extension sockets for tools with Morse taper shanks Douilles de réduction et allonges pour outils au cône Morse INTERNATIONAL STANDARD ISO 238 Second edition 2016 11 1[.]
INTERNATIONAL STANDARD ISO 238 Second edition 2016-11-15 Reduction sleeves and extension sockets for tools with Morse taper shanks Douilles de réduction et allonges pour outils au cône Morse Reference number ISO 238:2016(E) © ISO 2016 ISO 238:2016(E) COPYRIGHT PROTECTED DOCUMENT © ISO 2016, Published in Switzerland All rights reserved Unless otherwise specified, no part o f 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 o f the requester ISO copyright o ffice Ch de Blandonnet • CP 401 CH-1214 Vernier, Geneva, Switzerland Tel +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org ii © ISO 2016 – All rights reserved ISO 238:2016(E) Contents Page Foreword iv Scope Normative references Terms and definitions Interchangeability 4.1 General 4.2 Reduction sleeves 4.3 Extension sockets Reduction sleeves for tools with Morse taper shanks Extension sockets for tools with Morse taper shanks Annex A (informative) Relationship between designations in this document and ISO 13399 Bibliography © ISO 2016 – All rights reserved iii ISO 238:2016(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies) The work o f 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 o f electrotechnical standardization The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part In particular the different approval criteria needed for the di fferent types o f ISO documents should be noted This document was dra fted in accordance with the editorial rules of the ISO/IEC Directives, Part (see www.iso.org/directives) Attention is drawn to the possibility that some o f the elements o f this document may be the subject o f patent rights ISO shall not be held responsible for identi fying any or all such patent rights Details o f any patent rights identified during the development o f 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 in formation given for the convenience o f users and does not constitute an endorsement For an explanation on the meaning o f ISO specific terms and expressions related to formity assessment, as well as information about ISO’s adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html The committee responsible for this document is ISO/TC 29, Small tools, Subcommittee SC 2, Holding tools, adaptive items and interfaces This second edition cancels and replaces the first edition (ISO 238:1974), o f which it constitutes a minor revision, notably with the addition o f Annex A, which gives the relationship between the designations of this document and the ISO 13399 series iv © ISO 2016 – All rights reserved INTERNATIONAL STANDARD ISO 238:2016(E) Reduction sleeves and extension sockets for tools with Morse taper shanks Scope T h i s c ument s p e c i fie s the d i men s ion s o f the fol lowi ng two pie ce s o f e qu ipment: a) reduction sleeves for tools with Morse taper shanks; b) extension sockets for tools with Morse taper shanks It comprises, for each of them, two tables giving the dimensions in millimetres and the corresponding d i men s ion s i n i nche s , re s p e c tively Normative references There are no normative references in this document Terms and definitions No term s and defi nition s a re l i s te d i n th i s c u ment ISO and IEC maintain terminological databases for use in standardization at the following addresses: — IEC Electropedia: available at http://www.electropedia.org/ — ISO Online browsing platform: available at http://www.iso.org/obp Interchangeability 4.1 General T he numeric a l va lue s gi ven, whe ther i n m i l l i me tre s or i n i nche s , automatica l ly en s u re i nterch ange abi l i ty with the corre s p ond i ng mach i ne s and to ol s , whatever the s ys tem o f un its employe d T he mati ng d i men s ion s o f the sle eve s and s o cke ts a re in fac t in accorda nce with tho s e s p e c i fie d in ISO 296 for Morse taper shanks, which were determined so as to give the same guarantee of i nterch ange abi l ity 4.2 Reduction sleeves I n the re duc tion sle eve s i n m i l l i me tre s and i n i nche s , the i n s ide tap er i s a lways s tric tly the s ame a s the standard Morse taper of the same number, even in its length The same applies to the outside taper, except for the length which is sometimes equal to or sometimes greater than that of the standard taper of the same number 4.3 Extension sockets T he s tatements made ab ove concern i ng the M ors e tap er d i men s ion s o f the re duc tion s le eve s are e qua l ly applicable to the extension sockets, under the same conditions © ISO 2016 – All rights reserved ISO 238:2016(E) Table and Table f f f value for the total length Lengths above this minimum should be selected to suit requirements, but preference should be given to multiples of mm or 1/4 inch or even 10 mm or 1/2 inch a l s o s p e c i y, or the latter, the d i ame ter o the p ara l lel p or tion a nd the m i n i mu m l l NO TE This m i n i mu m wi l l be either the m i n i mu m indicated in the relevant note as “reinforced minimum” va lue s hown in the tab le s or the s l ightl y l a rger one Reduction sleeves for tools with Morse taper shanks An example of a method of designating a reduction sleeve with outside Morse taper and inside Morse taper is shown in Figure Key outside Morse taper inside Morse taper Figure Reduction sleeve Morse ì 2 â ISO 2016 – All rights reserved ISO 238:2016(E) Table — Dimensions (mm) Dimensions in millimetres Outside taper M.T No Inside taper d l 17,780 23,825 31,267 92 99 112 124 140 17 18 6,5 22,5 44,399 156 6,5 171 21,5 218 63,348 a M.T No 1 (1) (1) (2) (1) (2) d 12,065 12,065 17,780 12,065 17,780 23,825 12,065 17,780 23,825 31,267 12,065 17,780 23,825 31,267 44,399 The use of those sizes where the inside taper is shown in brackets should be avoided whenever possible Morse tapers are in accordance with ISO 296 dealing with self-holding tapers for tool shanks (except for the dimensions and which are greater for certain tools than the corresponding dimensions and given in ISO 296) l a Table — Dimensions (inches) d 0,700 0,938 1,231 1,748 Inside taper l M.T No 16 0,475 16 0,475 (1) (1) (2) 0,700 0,475 0,700 0,938 0,475 0,700 0,938 1,231 a 58 11 78 38 11 78 12 18 34 27 16 32 d The use of those sizes where the inside taper is shown in brackets should be avoided whenever possible Morse tapers are in accordance with ISO 296 dealing with self-holding tapers for tool shanks (except for the dimensions and which are greater for certain tools than the corresponding dimensions and given in ISO 296) l © ISO 2016 – All rights reserved Dimensions in inches Outside taper M.T No a l a l a ISO 238:2016(E) Table (continued) Outside taper M.T No d 2,494 Inside taper l 16 a1 16 M.T No (1) (2) d1 0,475 0,700 0,938 1,231 1,748 The use of those sizes where the inside taper is shown in brackets should be avoided whenever possible Morse tapers are in accordance with ISO 296 dealing with self-holding tapers for tool shanks (except for the dimensions a1 and l which are greater for certain tools than the corresponding dimensions a and l2 given in ISO 296) Extension sockets for tools with Morse taper shanks An example of the method of designating an extension socket with outside Morse taper and inside Morse taper is shown in Figure Key outside Morse taper inside Morse taper Figure — Extension socket Morse × © ISO 2016 – All rights reserved ISO 238:2016(E) Table — Dimensions (mm) Outside taper Inside taper M.T No d l 12,065 69 17,780 84 99 103 124 6,5 128 10,5 156 6,5 163 13,5 218 23,825 31,267 44,399 63,348 Dimensions in millimetres a M.T No d (2) (3) (4) (1) (5) (1) (2) (1) (2) (3) 12,065 17,780 12,065 17,780 23,825 12,065 17,780 23,825 31,267 12,065 17,780 23,825 31,267 44,399 12,065 17,780 23,825 31,267 44,399 12,065 17,780 23,825 31,267 44,399 d 20 30 20 30 36 20 30 36 48 20 30 36 48 63 20 30 36 48 63 20 30 36 48 63 l 145 160 160 175 196 175 194 215 240 200 215 240 265 300 232 247 268 300 335 294 309 330 355 390 The use of those sizes where the inside taper is shown in brackets should be avoided whenever possible The minimum length shown for is the normal The minimum described as “reinforced” comprises the same values, increased as follows: — mm or ¼ inch for extension sockets with inside tapers to 3; — 10 mm or ½ inch for those with inside tapers and For the choice of length above the minimum shown above, give preference, to suit requirements, to lengths in multiples of — mm or ¼ inch, and — 10 mm or ½ inch Morse tapers are in accordance with ISO 296 dealing with self-holding tapers for tool shanks (except for the dimensions and which are greater for certain tools than the corresponding dimensions and given in ISO 296) l l a l © ISO 2016 – All rights reserved a l ISO 238:2016(E) Table — Dimensions (inches) Outside taper M.T No d 0,475 0,700 Inside taper l a 34 38 78 0,938 18 4 18 32 11 32 16 11 32 13 32 1,748 6 1,231 5 Dimensions in inches 17 32 M.T No d d l2 0,475 0,787 34 (2) 0,700 1,181 38 0,475 0,787 38 0,700 1,181 78 (3) 0,938 1,417 34 0,475 0,787 78 0,700 1,181 58 0,938 1,417 12 (4) 1,231 1,890 38 (1) 0,475 0,787 78 0,700 1,181 12 0,938 1,417 38 1,231 1,890 10 (5) 1,748 2,480 11 (1) 0,475 0,787 18 (2) 0,700 1,181 34 0,938 1,417 10 1,231 1,890 11 1,748 2,480 13 © ISO 2016 – All rights reserved ISO 238:2016(E) Table (continued) Outside taper M.T No d l Inside taper a1 M.T No d1 (1) 0,475 d2 l2 0,787 11 (2) 0,700 1,181 12 2,494 16 16 (3) 0,938 1,417 13 1,231 1,890 14 1,748 2,480 15 The use of those size where the inside taper is shown in brackets should be avoided whenever possible The minimum length shown for l2 is the normal The minimum described as “reinforced” comprises the same values, increased as follows: — mm or ¼ inch for extension sockets with inside tapers to 3; — 10 mm or ½ inch for those with inside tapers and For the choice of length l2 above the minimum shown above, give preference, to suit requirements, to lengths in multiples of — mm or ẳ inch, and 10 mm or ẵ inch Morse tapers are in accordance with ISO 296 dealing with self-holding tapers for tool shanks (except for the dimensions a1 and l which are greater for certain tools than the corresponding dimensions a and l2 given in ISO 296) © ISO 2016 – All rights reserved ISO 238:2016(E) Annex A (informative) Relationship between designations in this document and ISO 13399 For relation sh ip b e twe en de s ignation s i n th i s c u ment a nd pre ferre d s ymb ol s accord i ng to I S O 3 9, see Table A.1 Table A.1 — Relationship between designations in this International Standard and ISO 13399 Symbol in this document M.T No outside taper M.T No inside taper l l Reference in this document Figure 1, Figure Table 1, Table 2, Table and Table Figure 1, Figure Table 1, Table 2, Table and Table Figure Table and Table Figure Table and Table Property name in the ISO 13399 series Symbol in the Reference in ISO 13399 series the ISO 13399 series connection size code machine side CZCMS 71EBDBF5060E6 connection size code workpiece side CZCWS 727C2BCBC1684 overall length OAL 71D078EB7C086 overall length OAL 71D078EB7C086 © ISO 2016 – All rights reserved ISO 8: 01 6(E) Bibliography [1] [2] ISO 296, Machine tools — Self-holding tapers for tool shanks ISO 13399 (all parts), Cutting tool data representation and exchange © ISO 2016 – All rights reserved ISO 8: 01 6(E) ICS 060.2 Price based on pages © ISO 2016 – All rights reserved