1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationSafety of transportable motor-operated electric toolsPart 2-4: Particular requirements for bench grindersBS EN 61029-2-4:2011Incorporating August 2011 corrigendumNational forewor
2、dThis British Standard is the UK implementation of EN 61029-2-4:2011. It is derived from IEC 61029-2-4:1993+A1:2001. It supersedes BS EN 61029-2-4:2003 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee CPL/116, Portable motor-operated tools.A list of org
3、anizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011ISBN 978 0 580 76428 8 ICS 25.080.50; 25.140.20Compliance with a Br
4、itish Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2011.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 61029-2-4:2011implemented at the T
5、he CENELEC common modifications have beenappropriate places in the text. The start and finish of each commonmodification is indicated in the text by tags . 31 August 2011 Correction to BSI identifierEUROPEAN STANDARD EN 61029-2-4 NORME EUROPENNE EUROPISCHE NORM January 2011 CENELEC European Committe
6、e for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members
7、. Ref. No. EN 61029-2-4:2011 E ICS 25.140.20; 25.080.50 Supersedes EN 61029-2-4:2003 + corr. Apr.2003 + A1:2003English version Safety of transportable motor-operated electric tools - Part 2-4: Particular requirements for bench grinders (IEC 61029-2-4:1993, modified + A1:2001, modified) Scurit des ma
8、chines-outils lectriques semi-fixes - Partie 2-4: Rgles particulires pour les tourets meuler (CEI 61029-2-4:1993, modifie + A1:2001, modifie) Sicherheit transportabler motorbetriebener Elektrowerkzeuge - Teil 2-4: Besondere Anforderungen fr Tischschleifmaschinen (IEC 61029-2-4:1993, modifiziert + A1
9、:2001, modifiziert) This European Standard was approved by CENELEC on 2011-01-10. CENELEC members are bound to comply with the 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
10、and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the resp
11、onsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Franc
12、e, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 61029-2-4:2011 2 Foreword The text of the International Standard IEC 61029-2-4:199
13、3 + A1:2001, prepared by IEC TC 116, Safety of hand-held motor-operated electric tools, together with the common modifications prepared by the Technical Committee CENELEC TC 116, Safety of motor-operated electric tools, was submitted to the formal vote and was approved by CENELEC as EN 61029-2-4 on
14、2011-01-10. This document supersedes EN 61029-2-4:2003 + corrigendum April 2003 + A1:2003. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2012-01-10 latest date by which the
15、national standards conflicting with the EN have to be withdrawn (dow) 2014-01-10 In this document, the common modifications to the International Standard are indicated by a vertical line in the left margin of the text. This European Standard is divided into two parts: Part 1 General requirements whi
16、ch are common to most transportable electric motor operated tools (for the purpose of this standard referred to simply as tools) which could come within the scope of this standard; Part 2 Requirements for particular types of tool which either supplement or modify the requirements given in part 1 to
17、account for the particular hazards and characteristics of these specific tools. This European Standard has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association and covers essential requirements of the Machinery Directive 2006/42/EC. See An
18、nex ZZ. Compliance with the relevant clauses of Part 1 together with this Part 2 provides one means of conforming with the specified essential health and safety requirements of the Directive. For noise and vibration this standard covers the requirements for their measurement, the provision of inform
19、ation arising from these measurements and the provision of information about the personal protective equipment required. Specific requirements for the reduction of the risk arising from noise and vibration through the design of the tool are not given as this reflects the current state of the art. As
20、 with any standard, technical progress will be kept under review so that any developments can be taken into account. Warning: Other requirements and other EC Directives can be applicable to the products falling within the scope of this standard. Part 2-4 is to be used in conjunction with EN 61029-1:
21、2009. Part 2-4 supplements or modifies the corresponding clauses of EN 61029-1, so as to convert it into the European Standard: Safety requirements for transportable bench grinders. BS EN 61029-2-4:2011 3 EN 61029-2-4:2011 Where a particular subclause of Part 1 is not mentioned in this Part 2-4, tha
22、t subclause applies as far as is reasonable. Where this Part 2-4 states “addition“, “modification“ or “replacement“, the relevant text of Part 1 is to be adapted accordingly. Subclauses, tables and figures which are additional to those in Part 1 are numbered starting from 101. Subclauses, tables and
23、 figures which are additional to those in IEC 61029-2-4 are prefixed “Z“. NOTE In this European Standard the following print types are used: - Requirements proper; - Test specifications; - Explanatory matter. BS EN 61029-2-4:2011EN 61029-2-4:2011 4 Contents 1 Scope . . 52 Terms and definitions . 5 3
24、 General requirement 6 4 General notes on tests . . 6 5 Rating . . 66 Classification 67 Marking . 68 Protection against electric shock . 7 9 Starting . . 710 Input and current . 711 Heating . . 712 Leakage current 713 Environmental requirements . . 8 14 Protection against ingress of foreign bodies a
25、nd moisture resistance . 815 Insulation resistance and electric strength . 816 Endurance . . 817 Abnormal operation 8 18 Stability and mechanical hazards .819 Mechanical strength . . 1420 Construction . 1421 Internal wiring . 1422 Components . 1423 Supply connection and external flexible cables and
26、cords . 1424 Terminals for external conductors . 1425 Provision for earthing . . 1526 Screws and connections . 1527 Creepage distances, clearances and distance through insulation . 1528 Resistance to heat, fire and tracking . . 1529 Resistance to rusting . . 1530 Radiation . . 15BS EN 61029-2-4:2011
27、Annexes . 24 5 1 Scope This clause of Part 1 is applicable except as follows: 1.1 Addition: This standard applies to transportable bench grinders (see Figure 101) and combined bench grinders (see Figure 107) with a wheel diameter and brush diameter not exceeding 200 mm, a thickness not exceeding 30
28、mm and a peripheral speed not exceeding 50 m/s, as defined in 2.101 and 2.107. The requirements for bonded abrasive products (wheel) are given in EN 12413. The requirements for brushes are given in EN 1083-2. Stationary grinding machines are covered by EN 13218. Bench grinders where the wheel partly
29、 runs in a water reservoir are not considered as tools with water supply. 2 Terms and definitions This clause of Part 1 is applicable except as follows: 2.21 normal load the load to obtain rated input 2.101 bench grinder tool designed to grind metal or similar materials by means of one or two rotati
30、ng abrasive wheels fixed on the tool spindle, the work piece being held by hand (see Figure 101) 2.102 accessory device or piece other than a grinding wheel intended to be mounted on the bench grinder spindle 2.103 tool spindle motor spindle of the bench grinder or of the combined bench grinder whic
31、h supports the brush and/or grinding wheels and transports the rotation to them 2.104 guard for wheel device which partially encloses the abrasive wheel in order to protect the user against accidental contact with the wheel in normal use and against ejection of fragments of the wheel in the protecte
32、d area in case of breakage of the wheel SAFETY OF TRANSPORTABLE MOTOR-OPERATED ELECTRIC TOOLS Part 2: Particular requirements for bench grindersEN 61029-2-4:2011BS EN 61029-2-4:2011 6 2.105 flange assembly means provided to clamp an abrasive wheel to the tool spindle 2.106 work rest surface or devic
33、e intended to support or guide the piece to be worked 2.107 combined bench grinder tool designed to grind metal or similar materials or to clean, polish or deburr metal or similar materials by means of an abrasive wheel and a brush fixed on opposite ends of the tool spindle, and which is located in
34、a proper workplace and where pieces are held by hand 3 General requirement This clause of Part 1 is applicable. 4 General notes on tests This clause of Part 1 is applicable. 5 Rating This clause of Part 1 is applicable. 6 Classification This clause of Part 1 is applicable. 7 Marking This clause of P
35、art 1 is applicable except as follows: 7.1 Addition: the rated no-load speed in /min or min-1; the minimum and maximum diameter D of the wheel to be used; indication of the direction of rotation of the grinding wheel; for combined bench grinders, the minimum and maximum diameter D of the brush to be
36、 used; for combined bench grinders, a warning near to the brush spindle never to use a grinding wheel on the brush side of the machine; a warning to wear safety glasses or the relevant symbol. 7.6 Aditon: The direction of rotation of the wheel shall be indicated on the tool by an arrow raised or sun
37、k or by any other means not less visible and indelible. EN 61029-2-4:2011 BS EN 61029-2-4:2011 7 7.13 Addition: The handbook or information sheet shall include all the necessary information for safe working with the bench grinder or combined bench grinder, such as method of operation, wheel and brus
38、h changing, maintenance, assembly, transportation, etc. The substance of the following instructions shall also be given: warning not to use damaged or misshapen wheels or brushes; instruction to use only grinding wheels and brushes which have a marked speed equal to or greater than the speed marked
39、on the nameplate of the tool; instruction to adjust the spark arrestor frequently so as to compensate for wear of the wheel, keep the distance between the spark arrestor and the wheel as small as possible and in any case not greater than 2 mm; instructions for the safe use, handling and storage of a
40、brasive wheels and brushes; if the grinder is intended to be bolted down, an instruction requesting it to be secured to a suitable work surface; for combined bench grinders, instruction to always keep the brush assembled on the spindle in order to limit the risk of contact with the rotating spindle;
41、 details of the grinding wheel(s) recommended, the maximum thickness of the wheel and the diameter of the hole in the wheel; for combined bench grinders, details of the brushes recommended, the maximum thickness of the brush and the diameter of the hole in the brush; the maximum wear of the wheel al
42、lowed before replacement; NOTE Sketches may be used to illustrate the modes of operation. 8 Protection against electric shock This clause of Part 1 is applicable. 9 Starting This clause of Part 1 is applicable. 10 Input and current This clause of Part 1 is applicable. 11 Heating This clause of Part
43、1 is applicable. 12 Leakage current This clause of Part 1 is applicable. EN 61029-2-4:2011BS EN 61029-2-4:2011 8 13 Environmental requirements This clause of Part 1 is applicable except as follows: 13.1 This subclause is not applicable. 13.2.4 Replacement of paragraphs 1 and 2: Bench grinders and co
44、mbined bench grinders are tested at no-load. NOTE The most important sources of noise for bench grinders are the workpiece and the wheel or brush. As these sources of noise cannot be influenced by the design of the tool, the noise is measured at no-load. 13.3 This subclause is not applicable. 14 Pro
45、tection against ingress of foreign bodies and moisture resistance This clause of Part 1 is applicable except as follows: 14.4 If the tool is constructed to IPX4 or above, this subclause is not applicable. 14.5 If the tool is constructed to IPX4 or above, this subclause is not applicable. 15 Insulati
46、on resistance and electric strength This clause of Part 1 is applicable. 16 Endurance This clause of Part 1 is applicable. 17 Abnormal operation This clause of Part 1 is applicable. 18 Stability and mechanical hazards This clause of Part 1 is applicable except as follows: 18.1 Addition: Bench grinde
47、rs and combined bench grinders shall be equipped with an adequate guarding system which cannot be removed without the aid of a tool. The guarding system shall comply with the requirements of 18.1.101. 18.1.101 Guard for wheel Bench grinders and combined bench grinders shall be equipped with guards w
48、hich leave uncovered only a portion of the wheel as allowed in 18.1.101.2 and indicated in Figure 103. On straight-sided wheels the side guard shall cover the flanges and the end of the tool spindle. EN 61029-2-4:2011 BS EN 61029-2-4:2011 9 The guard shall be designed so that the tool cannot be fitt
49、ed with a wheel greater than 1,07 times the maximum diameter marked on the tool. 18.1.101.1 Strength of guards Guards for straight sided wheels shall either: a) have a thickness as given in Table Z101 or Table Z102, provided the guard is made of material in accordance with Table Z103; or b) meet the requirements of 18.1.101.1.Z1. Guards for cup wheels shall ei
