1、BS EN 13743:2009ICS 25.100.70NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDSafety requirementsfor coated abrasiveproductsCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitte
2、d without license from IHS-,-,-This British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31 July 2009 BSI 2009ISBN 978 0 580 64552 5Amendments/corrigenda issued since publicationDate CommentsBS EN 13743:2009National forewordThis British Standard is the UK
3、implementation of EN 13743:2009. Itsupersedes BS EN 13743:2002 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee MTE/13, Grinding wheels, abrasive tools, paper and cloths,and powders.A list of organizations represented on this committee can be obtained on
4、request to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.Copyright European Committee for Standardization Provided
5、 by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 13743:2009EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 13743July 2009ICS 25.100.70 Supersedes EN 13743:2001 English VersionSafety requirements for coated abrasive productsPresc
6、riptions de scurit pour les produits abrasifsappliqusSicherheitsanforderungen fr Schleifmittel auf UnterlagenThis European Standard was approved by CEN on 5 June 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStan
7、dard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French,
8、 German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech
9、 Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN D
10、E NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13743:2009: ECopyright European Committee for Standardization Provided by IHS unde
11、r license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 13743:2009EN 13743:2009 (E) 2 Contents Foreword. . 3Introduction . 41 Scope 52 Normative references 53 Terms, definitions and symbols . 53.1 General 53.2 Grinding machines 53.3 Type of applicat
12、ion 63.4 Symbols 64 List of significant hazards 85 Safety requirements 85.1 General requirements 85.2 Safety factors . 95.3 Dimensional limitations and maximum operating speeds 95.4 Marking . 116 Verification of the safety requirements . 116.1 Verification of the general requirements . 116.2 Verific
13、ation of the safety factor 116.3 Verification of the dimensional requirements 126.4 Verification of the marking . 127 Information for use 12Annex A (normative) Marking 13A.1 Content of marking 13A.2 Execution of marking 15Annex B (normative) Colour codes . 16Annex C (informative) Speed conversion ta
14、ble 17Bibliography 18Tables Table 1 Type of application . 6 Table 2 Symbols . 7 Table 3 List of significant hazards . 8 Table 4 Safety factors 9 Table 5 Dimensional limitations and maximum operating speeds . 10 Table A.1 Marking of coated abrasive products and back-up pads . 13 Table A.2 Restriction
15、s of use (RE) . 15 Table B.1 Colour codes and design of colour codes . 16 Table C.1 Speed conversion . 17 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 13743:2009EN 13743
16、:2009 (E) 3 Foreword This document (EN 13743:2009) has been prepared by Technical Committee CEN/TC 143 “Machine tools - Safety”, the secretariat of which is held by SNV. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsem
17、ent, at the latest by January 2010, and conflicting national standards shall be withdrawn at the latest by January 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identify
18、ing any or all such patent rights. This document supersedes EN 13743:2001. Significant changes against EN 13743:2001 are as follows: a) The standard was technically and editorially revised and partly adapted to EN 12413:2007 on bonded abrasive products; b) Table 2 with dimensional abbreviations was
19、deleted; c) “Vibration“ was included in the list of hazards in Table 3; d) Table 5 (now Table 4) containing maximum operating speeds and safety factors was simplified and burst speed factors were given instead of minimum bursting speed; e) Table 6 (now Table 5) with dimensional limitations and maxim
20、um operating speeds was simplified by abandoning the distinction between standard operating speeds and special operating speeds; f) Clause 6 on verification and inspection was shortened, 6.1.1 and 6.1.2 about safety speed test and bursting speed test were combined to a new 6.2, thereby deleting Tabl
21、e 7 with maximum operating speeds and safety test speeds; g) 6.2 on scope of the inspection was deleted together with Table 8; h) Clause 7 on information for use was shortened; i) the requirements for colour code stripes were deleted in Annex A and are now presented in a new Annex B; j) some values
22、given in the speed conversion table in Annex B (now Annex C) were slightly changed. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, De
23、nmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Copyright European Committee for Standardization Provided b
24、y IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 13743:2009EN 13743:2009 (E) 4 Introduction This European Standard has been prepared to provide one means of conforming with essential safety requirements, e.g. of the General Product
25、Safety Directive and associated EFTA regulations. This European Standard is addressed to designers, manufacturers and suppliers of the coated abrasive products and back-up pads described in the scope. In addition, it helps designers, manufacturers and suppliers of grinding machines in the selection
26、of abrasive products, in order to reduce the risks and achieve conformity of the respective machinery with the Essential Safety Requirements of the Machinery Directive. The extent to which hazards are covered is indicated in the scope of this European Standard. Copyright European Committee for Stand
27、ardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 13743:2009EN 13743:2009 (E) 5 1 Scope This European Standard is applicable to the following coated abrasive products: flap wheels, flap discs, vulcanised fibre di
28、scs and spindle mounted flap wheels. It also applies to back-up pads for vulcanised fibre discs. This European Standard specifies requirements and/or measures for removal or reduction of hazards resulting from the design and application of the coated abrasive products and clamping devices. This Euro
29、pean Standard also contains procedures and tests for verification of compliance with the requirements as well as safety information for use, which is to be made available to the user by the manufacturer. The hazards taken into consideration are listed in Clause 4 of this standard. This European Stan
30、dard does not apply to non-woven web abrasive products, bonded abrasive products and superabrasive products. 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,
31、 the latest edition of the referenced document (including any amendments) applies. ISO 554, Standard atmospheres for conditioning and/or testing Specifications 3 Terms, definitions and symbols For the purpose of this document the following terms and definitions apply. 3.1 General 3.1.1 coated abrasi
32、ve product abrasive product composed of backing, abrasive particles and bond and optionally a supporting element NOTE Examples for supporting elements are pads and spindles. 3.1.2 clamping device device for fixing and positioning the abrasive product on the spindle of the grinding machine NOTE Clamp
33、ing devices include e.g. back-up pads for vulcanised fibre discs, and clamping flanges for flap wheels. 3.2 Grinding machines 3.2.1 stationary grinding machine grinding machine being fixed in position during operation NOTE See for example EN 13218. 3.2.2 mobile grinding machine grinding machine not
34、being fixed in position during operation NOTE Mobile grinding machines are manually guided (but not supported) by hand during use, e.g. floor grinding machines. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitte
35、d without license from IHS-,-,-BS EN 13743:2009EN 13743:2009 (E) 6 3.2.3 hand-held grinding machine grinding machine being held in the hand during the grinding process NOTE See for example EN 792-7, EN 792-9, EN 60745-2-3 and EN ISO 19432. 3.3 Type of application 3.3.1 General See Table 1. 3.3.2 mec
36、hanically guided grinding grinding process with feed movements of the abrasive product and/or workpiece guided by mechanical means 3.3.3 manually guided grinding grinding process with feed movements of the abrasive product and/or the workpiece manually guided by the operator 3.3.4 hand-held grinding
37、 grinding process with grinding machine entirely guided by the operators hands Table 1 Type of application Type of machine Type of application Abrasive product Workpiece Stationary grinding machines Mechanically guided grinding Fixed Guided mechanically Guided mechanically Fixed Guided mechanically
38、Guided mechanically Stationary and mobile grinding machines Manually guided grinding Guided by hand Fixed Fixed Guided by hand Hand-held grinding machines Hand-held grinding Guided by hand Fixed 3.4 Symbols The symbols used in this European Standard are listed in Table 2. Copyright European Committe
39、e for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 13743:2009EN 13743:2009 (E) 7 Table 2 Symbols Symbol Designation Definition Unit nabDeflection speed of a spindle mounted flap wheel Revolutions per mi
40、nute at which the spindle of a rotating spindle mounted flap wheel is deflecting under centrifugal force 1/min nmaxMaximum permissible speed of rotation Revolutions per minute of a rotating new abrasive product at maximum operating speed 1/min SabSafety factor against spindle deflection for a spindl
41、e mounted flap wheel Deflection speed divided by maximum permissible speed of rotation: maxnnSabab= vsMaximum operating speed Maximum permissible peripheral speed of a rotating abrasive product m/s vbrBursting speed Peripheral speed at which a rotating abrasive product breaks due to centrifugal forc
42、e m/s vbr minMinimum bursting speed Peripheral speed, which a rotating abrasive product shall at least reach without bursting due to centrifugal force m/s fbrBurst speed factor Bursting speed divided by maximum operating speed: sbrrvvfb= SbrSafety factor against bursting due to centrifugal force Bur
43、sting speed divided by maximum operating speed, all squared: 2=sbrbrvvS Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 13743:2009EN 13743:2009 (E) 8 4 List of significant
44、hazards The significant hazards are given in Table 3. Table 3 List of significant hazards Hazard designation Hazardous situation (Examples) Relevant clauses in the standard Ejection of parts 1. Abrasive product breakage caused by: improper design 5.1, 5.2, 5.3 and 5.4 manufacturing defects 5.1 wrong
45、 selection 5.4, Clause 7 and Annex A improper handling and storage Clause 7 improper use (mounting and grinding process) Clause 7 2. Grinding debris Clause 7 Vibration Hand arm vibration on hand-held machines caused by: improper use Clause 7 incorrect mounting Clause 7 5 Safety requirements 5.1 Gene
46、ral requirements 5.1.1 General Coated abrasive products shall be designed and manufactured in such a way that they resist the forces and loads that are to be expected when used as intended. They shall not present visible defects affecting safety and shall comply with the requirements listed in the f
47、ollowing clauses. 5.1.2 Sequence of maximum operating speeds Coated abrasive products shall be manufactured for maximum operating speeds according to the following sequence: 125 50 vs 80 3,5 1,87 5.2.2 Safety factors for spindle mounted flap wheels Spindle mounted flap wheels shall have a safety fac
48、tor against bursting due to centrifugal forces of Sbr= 3 at their maximum operating speed. The spindle shall have a safety factor against deflection of Sab= 1,3. 5.2.3 Safety factor for back-up pads for vulcanised fibre discs Back-up pads for vulcanised fibre discs shall fulfil a safety factor against bursting due to centrifugal force of Sbr= 3,5 at their maximum permissible speed of rotation. 5.3 Dimensional limitations and maximum operating speeds Coated abrasive
