1、BRITISH STANDARD BS ISO 21951:2001 Coated abrasives Plain discs with holes for dust extraction ICS 25.100.70 BS ISO 21951:2001 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 14 October 2004 BSI 14 October 2004 ISBN 0 580 44574 7 National for
2、eword This British Standard reproduces verbatim ISO 21951:2001 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee MTE/13, Grinding wheels, abrasive tools, paper, cloths and powders, which has the responsibility to: A list of or
3、ganizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence I
4、ndex”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself c
5、onfer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promu
6、lgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii and iii, a blank page, pages 1 to 4, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issue
7、d. Amendments issued since publication Amd. No. Date CommentsReference number ISO 21951:2001(E) INTERNATIONAL STANDARD ISO 21951 First edition 2001-04-01 Coated abrasives Plain discs with holes for dust extraction Produits abrasifs appliqus Disques simples avec trous pour extraction de la poussire B
8、SISO21951:2001ISO 15912:(1002)E DPF dlcsiremia ihTs PDF file mya ctnoain emdeddeb tyfepcaes. In acccnadroe with Aebods licnesign lopic,y this file may be pirtnde ro ivwede tub slahl ton eb ideted lnuess teh tyfepacse which aer emdeddeb era licnesed to dna intslaled on teh computre freporming teh ide
9、tign. In wodlnidaogn this f,eli trapies accept tniereh teh sersnoptilibiy of ton nifrgnigni Asebod licsnegni ilopcy. ehT ISO tneClar Secteraairt accepts no lilibaity ni this .aera Aebod is a tedarmakr fo Aebod Stsyems Icntaropro.de teDails fo the sfotwera pcudorts sude to crtaee tihs PFD file can be
10、 fdnuo in the Glarene Info leratiev to the fil;e the Pc-FDaertion arapmteres were tpoimizde for pirtning. Evyre cera sah neeb taken to enseru taht teh file is suitlbae fro sue by ISO memreb idob.se In teh lnuikley etnev ttah a plborem leratign to it is f,dnuo lpsaee ifnrom teh tneClar Sceterairat at
11、 the sserdda givne lebwo. ISO 1002 All rhgits rsevre.de elnUss towrehise scepfidei, on trap of tihs cilbuptanoi mya eb cudorperde ro utzilide ni yna form ro yb yna snaem, eelctinorc ro mecinahcal, inclidugn tohpociypong dna micrfoilm, wittuoh repmissino in writing form eitreh ISO at teh erddass lebw
12、o ro ISOs memreb ydob in the ctnuoyr of the rtseuqee.r ISO cirypothg fofice saCe tsopale 65 1121-HC aveneG 20 leT. + 41 22 947 10 11 xaF + 14 22 947 90 74 E-mail cirypothgiso.ch eWb www.iso.ch ii ISO 1002 All irhgts seredevr BSISO21951:2001ISO 15912:(1002)E ISO 1002 All rights rsedevre iii Foreword
13、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
14、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 elect
15、rotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires a
16、pproval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard IS
17、O 21951 was prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 5, Grinding wheels and abrasives. BSISO21951:2001INTENRATIONAL TSANDADR ISO 15912:(1002)E ISO 1002 All rights rsedevre 1 Coated abrasives Plain discs with holes for dust extraction 1 Scope This International Standard
18、 specifies the nominal dimensions of plain discs with holes for dust extraction. Plain discs in accordance with this International Standard are intended for use on disc sanders with dust extraction. 2 Normative reference The following normative document contains provisions which, through reference i
19、n this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying th
20、e most recent edition of the normative document indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 554:1976, Standard atmospheres for conditioning and/or
21、testing Specifications. 3 Types and dimensions 3.1 Types See Figures 1 and 2 and Table 1. BSISO21951:2001ISO 15912:(1002)E 2 ISO 1002 All rights rsedevre Figure 1 Type A disc Figure 2 Type B disc Table 1 Dimensions Dimensions in millimeters Nominal code D 1 Limit deviations D 2 D 3 D 4 H Type 1 1 0,
22、5 0,5 Number of holes per circle 18 0 5 0 6 2 100 1,5 65 8 3 115 41 6 4 4 115 1,5 65 8 5 125 41 6 4 6 125 65 8 7 125 72 5 8 150 65 6 8 9 150 65 8 10 150 80 6 11 150 120 6 12 150 120 18,5 8 A 13 200 2 128 1 150 65 116 10 2 180 2 90 140 12 3 200 105 150 12 B 4 230 2 105 150 14 6 22,5 8 BSISO21951:2001
23、ISO 15912:(1002)E ISO 1002 All rights rsedevre 3 3.2 Test conditions The limit deviations given in Table 1 are valid under the following conditions: Temperature: 20 C 2 C Relative humidity: 65 % 5% in accordance with ISO 554 When plain discs are tested they shall be stored for at least 24 h under th
24、e above conditions. 4 Designation A plain disc with holes for dust extraction conforming to this International Standard shall be designated by a) “Abrasive disc“; b) reference to this International Standard, i.e. ISO 21951; c) type A or B; d) nominal code. EXAMPLE A plain disc of Type A with nominal
25、 code 4 is designated as follows: Plain disc ISO 21951 A 4 5 Marking Plain discs with holes for dust extraction shall be marked with a) grain size; b) manufacturer, supplier, importer or their registered trademark. BSISO21951:2001ISO 15912:(1002)E 4 ISO 1002 All rights rsedevre Bibliography 1 ISO 63
26、44-1:1998, Coated abrasives Grain size analysis Part 1: Grain size distribution test. 2 ISO 6344-2:1998, Coated abrasives Grain size analysis Part 2: Determination of grain size distribution of macrogrits P12 to P220. 3 ISO 6344-3:1998, Coated abrasives Grain size analysis Part 3: Determination of g
27、rain size distribution of microgrits P240 to P2500. BSISO21951:2001blankBS ISO 21951:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at
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