SANS 61029-2-4-1993 Safety of transportable motor-operated electric tools Part 2-4 Particular requirements for bench grinders《可移动电机驱动的电动工具安全 第2 4部分 对台式磨床的特殊要求》.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-19542-7 SANS 61029-2-4:1993Edition 1 and IEC amdt 1, nat. amdts 1, 2IEC 61029-2-4:1993Edition 1 and amdt 1Any reference to SABS IEC 61029-

4、2-4 is deemedto be a reference to this standard(Government Notice No. 1373 of 8 November 2002)SOUTH AFRICAN NATIONAL STANDARD Safety of transportable motor-operated electric tools Part 2-4: Particular requirements for bench grinders This national standard is the identical implementation of IEC 61029

5、-2-4:1993 and amendment 1, and is adopted with the permission of the International Electrotechnical Commission. WARNING Can only be used in conjunction with SANS 61029-1. Published by Standards South Africa 1 dr lategan road groenkloof private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 15

6、68 international code + 27 12 www.stansa.co.za Standards South Africa SANS 61029-2-4:1993 Edition 1 and IEC amdt 1, nat. amdts 1,2 IEC 61029-2-4:1993 Edition 1 and amdt 1 Table of changes Change No. Date Scope Nat. amdt 1 1998 Amended to change it to a markaspecification, since approval has been giv

7、en to apply the safety certification mark to commodities that fall within the scope of this part of SABS IEC 61029-2. IEC amdt 1 2001 Amended to replace and add definitions to the marking requirements, and to change some constructional requirements. Nat. amdt 2 2007 Amended to change the designation

8、 from SABS to SANS, and to delete reference to the certification mark scheme. aIn the current edition, the certification mark has been removed. National foreword This South African standard was approved by National Committee StanSA TC 72, Safety of electrical appliances and electronic equipment, in

9、accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in June 2007. This SANS document supersedes SABS IEC 61029-2-4:1993 (edition 1 as modified by IEC amdt 1:2001 and nat. amdt 1:1998). INTERNATIONALSTANDARDIEC610

10、29-2-41993AMENDMENT 12001-05Amendment 1Safety of transportable motor-operated electrictools Part 2-4:Particular requirements for bench grindersAmendement 1Scurit des machines-outils lectriques semi-fixes Partie 2-4:Rgles particulires pour les tourets meulerPRICE CODE IEC 2001 Copyright - all rights

11、reservedInternational Electrotechnical Commission 3, rue de Varemb Geneva, SwitzerlandTelefax: +41 22 919 0300 e-mail: inmailiec.ch IEC web site http:/www.iec.chEFor price, see current catalogueCommission Electrotechnique InternationaleInternational Electrotechnical CommissionSANS 61029-2-4:1993This

12、 s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 2 61029-2-4 Amend. 1 IEC:2001(E)FOREWORDThis amendment has been prepared by subcommittee 61F: Safety of hand-held motor-operated electric tools, of IEC technical committee 61: Safety of household a

13、nd similarelectrical appliances.The text of this amendment is based on the following documents:FDIS Report on voting61F/371/FDIS 61F/386/RVDFull information on the voting for the approval of this amendment can be found in the reporton voting indicated in the above table.The committee has decided tha

14、t the contents of the base publication and its amendments willremain unchanged until 2006. At this date, the publication will bereconfirmed;withdrawn;replaced by a revised edition, oramended._Page 71 Scope1.1 Modification:Replace the first paragraph by the following:This International Standard appli

15、es to transportable bench grinders (figure 101) and combinedbench grinders (figure 107) with a wheel diameter and brush diameter not exceeding 200 mmand a peripheral speed not exceeding 50 m/s, as defined in 2.101 and 2.114.Add figure 107 as follows:SANS 61029-2-4:1993This s tandard may only be used

16、 and printed by approved subscription and freemailing clients of the SABS .61029-2-4 Amend. 1 IEC:2001(E) 3 1 - straight-sided grinding wheel 7 - nozzle for dust2 - brush 8 - on/off device3 - flange 9 - handle4 - work rest 10 - spark arrestor5 - transparent screen 11 - cup shaft guard6 - guard for s

17、traight-sided wheel 12 - marking plateFigure 107 Combined bench grinderNOTE The drawings are given as a guide only.2 DefinitionsReplace definitions 2.103, 2.104 and 2.112 as follows:2.103machine spindlemotor spindle of the bench grinder or of the combined bench grinder which supports andtransmits th

18、e rotation to the grinding wheels or to the grinding wheel and/or the brush2.104nozzle for dust collectiondevice allowing the connection of a bench grinder or a combined bench grinder to a dustcollection system2.112working speedlinear peripheral speed of the wheel or of the brush while workingAdd th

19、e following definition:2.114combined bench grindertool designed to grind metal or similar materials or to clean, polish or deburr metal or similarmaterials by means of an abrasive wheel and a brush fixed on opposite ends of the machinespindle, and which is located in a proper workplace and where pie

20、ces are held by handIEC 490/01SANS 61029-2-4:1993This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 4 61029-2-4 Amend. 1 IEC:2001(E)Page 117 Marking7.1 Addition:Add the following items: for combined bench grinders, the maximum diameter D of the

21、 brush to be used; for combined bench grinders/brushes, a warning near to the brush holder spindle never touse a grinding wheel on the brush side of the machine.7.13 Addition:Replace the first paragraph as follows:The handbook or information sheet shall include all the necessary information for safe

22、working with the bench grinder or combined bench grinder, such as method of operation,wheel and brush changing, maintenance, assembly, transportation, etc.Replace the second dash as follows: do not use damaged or misshapen wheels or brushes;Replace the sixth dash as follows: for bench grinders and c

23、ombined bench grinders equipped with straight-sided flanges, therecommended values of the thickness T and the diameter of the hole;Add, before the note, the following additional dash: for combined bench grinders, to always keep the brush assembled on the spindle in orderto limit the risk of contact

24、with the rotating spindle.Page 1518 Stability and mechanical hazards18.1 Addition:Replace the first paragraph as follows:Bench grinders and combined bench grinders shall be equipped with an adequate guardingsystem, which cannot be removed without the aid of a tool.18.1.101 GuardChange the heading of

25、 this subclause as follows:18.1.101 Guard for wheelReplace the first paragraph as follows:Bench grinders and combined bench grinders shall be equipped with guards which leaveuncovered only a portion of the wheel as indicated in figure 102. Guards shall be designed tohave mechanical resistance to acc

26、idental breaking of the wheels.SANS 61029-2-4:1993This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .61029-2-4 Amend. 1 IEC:2001(E) 5 Page 2318.1.101.3 Spark arrestorReplace the first paragraph as follows:Bench grinders and combined bench grinde

27、rs equipped with straight-sided wheels shall havea spark arrestor to limit the ejection of sparks and pieces of wheel from the wheel guard. Itsaim is also to improve the collection of dust.18.1.101.4 Work restReplace the first paragraph as follows:Bench grinders and combined bench grinders shall be

28、equipped with work rests. This require-ment does not apply to the brush side of the combined bench grinder.Replace the fourth paragraph as follows:When the bench grinder and/or the grinder side of the combined bench grinder is fitted withan inclinable work rest, the inclination shall only be possibl

29、e downwards and the tiltingupwards of the work rest shall be made impossible (figure 105).Page 2518.1.102.1 FlangeAdd a new subclause and incorporate in it the existing text of 18.1.102.1, as follows:18.1.102.1.1 Flange for wheelTable 101 gives minimal dimensions of flanges made in steel or other ma

30、terial of adequatestrength with minimal tensile strength of 430 N/mm2 or sintered powder metal with minimaltensile strength of 500 Nmm2in relation to the diameter of the wheel and for a wheelthickness not exceeding 0,15 times the diameter.Divide the existing Table 101 Flange dimensions into a new Fi

31、gure 108 and an amendedTable 101 as follows:SANS 61029-2-4:1993This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 6 61029-2-4 Amend. 1 IEC:2001(E)Dimensions in millimetresD Wheel nominal diameterdf Minimal external diameter of flangesr Minimal

32、width of contact surfaceE Minimal flange thickness on flat surfaceF Minimal flange thickness on inclined surfaceT Minimal depth of recessFigure 108 Flange dimensions for wheelTable 101 Flange dimensions for wheel (see Figure 108)Ddf rEFT100 34 6 5 3,2 1,5125 42 8 6 3,2 1,5150 52 9 10 5 1,5200 681)12

33、1)101)51)1,51)1) These values are valid for flanges to be used on wheelswith 200 mm nominal diameter and 30 mm thickness.Cast iron flanges shall not be used.Add the following new subclause:18.1.102.1.2 Flange for brushTable 102 gives minimal dimensions of flanges made in steel or other material of a

34、dequatestrength with minimal tensile strength of 430 N/mm2 or sintered powder metal with minimaltensile strength of 500 N/mm2 in relation to the diameter of the brush.IEC 491/01SANS 61029-2-4:1993This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS

35、 .61029-2-4 Amend. 1 IEC:2001(E) 7 Dimensions in millimetresD Brush nominal diameterdf Minimal external diameter of flangesr Minimal width of contact surfaceE Minimal flange thickness on flat surfaceF Minimal flange thickness on inclined surfaceT Minimal depth of recessFigure 109 Flange dimensions f

36、or brushTable 102 Flange dimensions for brush (see Figure 109)DdfrEFT100 34 5 1,5 1,5 1,5125 42 5 2 2 1,5150 52 5 2,5 2,5 1,5200 68 5 2,5 2,5 1,5Cast iron flanges shall not be used.Page 2718.1.103 Transparent screensAdd a new subclause and incorporate in it the existing text of 18.1.103 as follows:1

37、8.1.103.1 Transparent screen characteristicsReplace the first three paragraphs as follows:The bench grinders and combined bench grinders shall be fitted with transparent screensdesigned to prevent projection of particles towards the eyes and the face of the operator.The transparent screens shall be

38、adjustable and of such dimensions that in normal positionsof grinding and polishing, including in a vertical plane above the wheel or the brush, theoperator shall see the working part of the wheel or of the brush only through the screen.The operation of adjusting the screen shall not modify the adju

39、stment of other parts of thebench grinder or combined bench grinder.IEC 491/01SANS 61029-2-4:1993This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 8 61029-2-4 Amend. 1 IEC:2001(E)18.1.103.2 Minimal dimension of the transparent part of rectangu

40、lar or trapezoidaltransparent screensReplace the paragraphs after Figure 106 as follows:The minimal dimensions of the transparent part of screens for bench grinders equipped withstraight-sided cup wheels are identical to those of screens for bench grinders or combinedbench grinders equipped with str

41、aight-sided wheels. However, for bench grinders and for thegrinder side of the combined bench grinders, the thickness of straight-sided wheels shall bereplaced by the width of the working part of the straight-sided cup wheel.For all bench grinders and combined bench grinders, the screens shall be mo

42、unted in such away that the symmetrical axis of the screen coincides with the vertical median plane of theworking part of the wheel or the brush (figure 106).Add the following new subclause18.1.104 Protection of the free extremity of the rotative shaft in thecombined bench grinderThe shaft part on t

43、he brush side, when not fitted with a brush, shall be protected in order toavoid accidental contacts.Compliance is checked by applying the test pin in figure 2 of part 1.NOTE A possible solution for satisfying this requirement is shown in figure 110.Figure 11018.2 Addition:Replace the text of the su

44、bclause as follows:Bench grinders and combined bench grinders shall have provisions to be fixed on a support.IEC 492/01SANS 61029-2-4:1993This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .61029-2-4 Amend. 1 IEC:2001(E) 9 Page 2920 Construction2

45、0.18 Addition:Replace the title and text of the existing subclause 20.18 by the following:20.18 Modification:Replace the existing test specification by the following:Compliance is checked by applying a sphere with a diameter of 100 mm 1 mm to the switch.It shall not be possible to start the tool by

46、means of the sphere._SANS 61029-2-4:1993This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISBN 2-8318-5789-9G0DG18G26G31G2BG27G2CG20G1BG3BG38G3AG3BG3CG36G18ICS 25.140.20; 25.080.50Typeset and printed by the IEC Central OfficeGENEVA, SWITZERLAND

47、SANS 61029-2-4:1993This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .SANS 61029-2-4:1993This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .SANS 61029-2-4:1993This s tandard may only be used

48、 and printed by approved subscription and freemailing clients of the SABS .SANS 61029-2-4:1993This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .SANS 61029-2-4:1993This s tandard may only be used and printed by approved subscription and freemail

49、ing clients of the SABS .SANS 61029-2-4:1993This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .SANS 61029-2-4:1993This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .SANS 61029-2-4:1993This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .SANS 61029-2-4:1993This s tandard may only be used and printed by approved subscription and free