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1、INTERNATIONAL STANDARD IS0 723 Second edition 1991-02-15 Rock drilling equipment - Forged collared shanks and corresponding chuck bushings for hollow hexagonal drill steels Mat&iel de forage des roches - Emmanchements B collerette forgee et douilles Porte-outils pour tleurets hexagonaux creux Refere
2、nce number IS0 723:1991(E) IS0 723:1991(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member
3、 body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Ele
4、ctrotechnical 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 Inter- national Standard requires approval by at least 75% of the member bodies casti
5、ng a vote. International Standard IS0 723 was prepared by Technical Committee ISO/TC 82, Mining. This second edition cancels and replaces the first edition (IS0 723: 1974), which has been technically revised (extension of the range of sizes and specification of the size of the internal diameter at t
6、he forged collar). 0 IS0 1991 All rights reserved. No part of thls publlcatlon may be reproduced or utlllzed In any form or by any means, electronic or mechanlcal, Including photocopylng and mlcrofilm, wlthout permlsslon In wrltlng from the publisher. lnternatlonal Organization for Standardlzatlon C
7、ase Postale 56 l CH-1211 Geneve 20 l Switzerland Prlnted In Switzerland ii -,-,- INTERNATIONAL STANDARD IS0 723:1991 (E) Rock drilling equipment - Forged collared shanks and corresponding chuck bushings for hollow hexagonal drill steels 1 Scope This International Standard specifies the dimensions of
8、 forged collared shanks for hollow hexagonal drill steels in bar form for rock drilling, which comply with IS0 722. It also specifies the dimensions for the corresponding chuck bushings. 2 Normative reference The following standard contains provisions which, through reference in this text, constitut
9、e provisions of this International Standard. At the time of publi- cation, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this International Standard are encour- aged to investigate the possibility of applying the most recent edition of the
10、 standard indicated below. Members of IEC and IS0 maintain registers of cur- rently valid International Standards. IS0 722:1991, Rock drilling equipment - Hollow drill steels in bar form, hexagonal and round. 3 Dimensions 3.1 Forged collar shanks The dimensions of the forged collared shanks and corr
11、esponding chuck bushings shall comply with the dimensions given in figure 1 and table 1 and in figure 2 and table 2, respectively. -,-,- IS0 723:1991(E) Hexagonal hollow drill steel according to IS0 722 7 *I Dlameter measured at the entry polnt ot the cone. Figure 1 Table 1 Dimensions In millimetres
12、 Nominal s . .- -. size I 19 192 -:,4 108 50 6,5 33 5,5 8 8 9,4 3,5 4,5 22 a4 -$ 108 50 6,5 35 6,l 9 9 IO,4 4 4,5 25 25,6 -:,o 108 50 6,5 38 6,8 9,5 9,5 10,9 4,5 4,5 25 25,6 & 159 70 6,5 38 6,8 9,5 9,5 IO,9 4,5 4,5 28 2V -:,o 159 75 6,5 43 8,3 9,5 9,5 IO,9 6,5 4,5 I 4 16 16 16 16 16 R, +I 0 1,5 2 2
13、2 3 x Y +- 7 0,15 9 02 9 02 T 9 02 T-p -,-,- IS0 723:1991 (E) 3.2 Chuck bushings Figure 2 28 Nominal size 19 22 25 25 108 108 108 Table 2 Dimensions in millimetres s 1) See table 1 and figure 1. R & +I 0 max. 4,5 I,2 4,5 I,2 4,5 I,2 4,5 I,2 4,5 I,2 3 -,-,- IS0 723:1991(E) UDC 622.233.7 Descriptors: mining equipment, drilling equipment, rock drills, drill steels, hollow proflles, hexagonal bars, bushlngs, shanks, dlmenslons. Price based on 3 pages -,-,-