1、BS EN 13743:2017Safety requirements for coatedabrasive productsBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 13743:2017 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 13743:2017. It supersedes BS EN 13743:2009 which is w
2、ithdrawn.The UK participation in its preparation was entrusted to Technical Committee MTE/13, Grinding wheels, abrasive tools, paper and cloths, and powders.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include
3、all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 91773 8 ICS 25.100.70 Compliance with a British Standard cannot confer immunity from legal obligations.This Brit
4、ish Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 13743:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13743 January 2017 ICS 25.100.70 Supersedes
5、EN 13743:2009English Version Safety requirements for coated abrasive products Prescriptions de scurit pour les produits abrasifs appliqus Sicherheitsanforderungen fr Schleifmittel auf Unterlagen This European Standard was approved by CEN on 14 November 2016. CEN members are bound to comply with the
6、CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management
7、Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as
8、 the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Net
9、herlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 C
10、EN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13743:2017 EBS EN 13743:2017EN 13743:2017 (E) 2 Contents Page European foreword . 3 Introduction 4 1 Scope 5 2 Normative references 5 3 Terms and definitions . 5 3.1 General 5 3.2 Grin
11、ding machines 5 3.3 Type of application . 6 3.3.1 General 6 3.4 Symbols . 7 4 List of significant hazards 7 5 Safety requirements . 8 5.1 General requirements . 8 5.1.1 General 8 5.1.2 Sequence of maximum operating speeds . 8 5.2 Safety factors. 9 5.2.1 Safety factors for flap wheels, flap discs and
12、 vulcanised fibre discs 9 5.2.2 Safety factors for spindle mounted flap wheels . 9 5.2.3 Safety factor for back-up pads for vulcanised fibre discs . 9 5.3 Dimensional limitations and maximum operating speeds 9 5.4 Marking 11 6 Verification of the safety requirements . 11 6.1 Verification of the gene
13、ral requirements 11 6.2 Verification of the safety factor . 11 6.3 Verification of the dimensional requirements 12 6.4 Verification of the marking 12 7 Information for use . 12 Annex A (normative) Marking 13 A.1 Content of marking 13 A.1.1 Marking requirements . 13 A.1.2 Additional inscriptions 15 A
14、.2 Execution of marking 15 Annex B (normative) Colour codes . 16 Annex C (informative) Speed conversion table 17 Bibliography . 18 BS EN 13743:2017EN 13743:2017 (E) 3 European foreword This document (EN 13743:2017) has been prepared by Technical Committee CEN/TC 143 “Machine tools - Safety”, the sec
15、retariat 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 endorsement, at the latest by July 2017, and conflicting national standards shall be withdrawn at the latest by July 2017. Attention is drawn to
16、 the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 13743:2009. Significant changes against EN 13743:2009 are as follows: a) the scope was clarifi
17、ed and the types of permissible abrasive grains were specified; b) Table 3 was updated with additional hazard designations; c) Table 5 was revised according to current scientific and technical knowledge; d) Clause 7 was modified in order to avoid overlap with European legislation; e) the short signs
18、 on the restriction of use were removed from Annex A. 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finla
19、nd, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 13743:2017EN 13743:
20、2017 (E) 4 Introduction This European Standard has been prepared to provide one means of conforming to essential safety requirements, e.g. of the General Product Safety Directive and associated EFTA regulations. This European Standard is addressed to manufacturers, suppliers and importers of the coa
21、ted abrasive products and back-up pads described in the scope. In addition, it helps manufacturers, suppliers and importers of grinding machines in the selection of abrasive products, in order to reduce the risks and achieve conformity of the respective machinery with the Essential Safety Requiremen
22、ts of the Machinery Directive. The extent to which hazards are covered is indicated in the scope of this European Standard. BS EN 13743:2017EN 13743:2017 (E) 5 1 Scope This European Standard is applicable to the following coated abrasive products and a combination of coated and non-woven abrasive pr
23、oducts: flap wheels, flap discs, vulcanised fibre discs and spindle mounted flap wheels. It also applies to back-up pads for vulcanised fibre discs. These products are manufactured using the following abrasive grains: aluminium oxide, silicon carbide, diamond, or CBN. This European Standard specifie
24、s 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 European Standard also contains procedures and tests for verification of compliance with the requirements as well as safety informat
25、ion 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 Standard does not apply to abrasive products entirely of non-woven web. 2 Normative references The following documents, in whole or
26、in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 554, Standard atmospheres for conditioni
27、ng and/or testing Specifications 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 General 3.1.1 coated abrasive product abrasive product composed of backing, abrasive particles and bond and optionally a supporting element Note 1 to entry: Exam
28、ples 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 1 to entry: Clamping devices include e.g. back-up pads for vulcanised fibre discs, and clamping flanges for flap wheels. 3.2 Gr
29、inding machines 3.2.1 stationary grinding machine grinding machine being fixed in position during operation Note 1 to entry: See for example EN ISO 16089. BS EN 13743:2017EN 13743:2017 (E) 6 3.2.2 mobile grinding machine grinding machine not being fixed in position during operation Note 1 to entry:
30、Mobile grinding machines are manually guided (but not supported) by hand during use, e.g. floor grinding machines. 3.2.3 hand-held grinding machine grinding machine being held in the hand during the grinding process Note 1 to entry: See for example EN ISO 11148-7, EN ISO 11148-9, EN 6074523 and EN I
31、SO 19432. 3.3 Type of application 3.3.1 General See Table 1. 3.3.2 mechanically 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
32、the workpiece manually guided by the operator 3.3.4 hand-held grinding 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 Fi
33、xed Guided mechanically Guided mechanically Fixed Guided mechanically 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 BS EN 13743:2017EN 13743:2017 (E) 7
34、 3.4 Symbols The symbols used in this European Standard are listed in Table 2. Table 2 Symbols Symbol Designation Definition Unit nabDeflection speed of a spindle mounted flap wheel Revolutions per minute at which the spindle of a rotating spindle mounted flap wheel is deflecting under centrifugal f
35、orce 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 spindle mounted flap wheel Deflection speed divided by maximum permissible speed of rotation: abab=maxnSn
36、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 force m/s vbr minMinimum bursting speed Peripheral speed, which a rotating abrasive product shall at lea
37、st reach without bursting due to centrifugal force m/s fbrBurst speed factor Bursting speed divided by maximum operating speed: brrs=bvfv SbrSafety factor against bursting due to centrifugal force Bursting speed divided by maximum operating speed, all squared: brbrs=2vSv 4 List of significant hazard
38、s The significant hazards are given in Table 3. BS EN 13743:2017EN 13743:2017 (E) 8 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 m
39、anufacturing defects 5.1 wrong 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 dust, airborne particles Clause 7 solid particles Clause 7 Vibration Hand arm vibration on hand-held machines ca
40、used by: improper use Clause 7 incorrect mounting Clause 7 Contact with the rotating/oscillating abrasive product Improper use Clause 7 Noise Insufficient ear protection Clause 7 5 Safety requirements 5.1 General requirements 5.1.1 General Coated abrasive products shall be designed and manufactured
41、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 following clauses. 5.1.2 Sequence of maximum operating speeds Coated abrasive products shall
42、 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 factor against bursting due to centrifugal forces of Sbr= 3 at their maximum operating speed.
43、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 rota
44、tion. 5.3 Dimensional limitations and maximum operating speeds Coated abrasive products shall comply with the dimensional limitations and maximum operating speeds as specified in Table 5. BS EN 13743:2017EN 13743:2017 (E) 10 Table 5 Dimensional limitations and maximum operating speeds Designation, s
45、hape, dimensional lettersbType of machineaType of applicationaDimensional limitations mm Maximum operating speeds vsm/s Flap wheel D T Stationary grinding machines Mechanically guided grinding / 40, 50 and 63 Stationary and mobile grinding machines Manually guided grinding D 600 T 300 D1 0,5 D 40, 5
46、0 and 63 Hand-held grinding machines Hand-held grinding Dmax Tmax250 50 200 75 125 100 100 125 D1 0,33 D 40, 50 and 63 Spindle mounted flap wheel D T SdHand-held grinding machines Hand-held grinding D 80 T 50 40 Flap disc D T H Hand-held grinding machines Hand-held grinding D 230 T 22 H = 22,23 (For
47、 D = 100: H = 16) 80 BS EN 13743:2017EN 13743:2017 (E) 11 Designation, shape, dimensional lettersbType of machineaType of applicationaDimensional limitations mm Maximum operating speeds vsm/s Vulcanised fibre disc with or without cross slots cD H Hand-held grinding machines (use always with back-up
48、pad) Hand-held grinding (use always with back-up pad) 80 D 235 ls 0,44 D, ls,max= 80 H = 22 (For D = 100: H = 16 or 22) 80 aDefinitions see 3.2 and 3.3. bFigures show product examples. cBeside vulcanized fibre, other backing material may be used. 5.4 Marking Coated abrasive products and back-up pads
49、 shall be marked according to Annex A. 6 Verification of the safety requirements 6.1 Verification of the general requirements For visible defects affecting safety the coated abrasive product is checked by visual inspection. Damaged abrasive products shall be destroyed. 6.2 Verification of the safety factor Compliance with the safety factor is checked by a centrifugal force test (bursting speed test). The coated abrasive product mounted in a clamping device on a suitable test rig is loaded with stead
