1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 11148-7:2012Hand-held non-electric powertools Safety requirementsPart 7: GrindersBS EN ISO 11148-7:2012 BRITISH STANDARDNational forewordThis British Standard is the UK
2、 implementation of EN ISO 11148-7:2012. It supersedes BS EN 792-7:2001+A1:2008, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee MCE/8/-/2, Hand-held, non-electric power tools - Safety.A list of organizations represented on this committee can be obtaine
3、d 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. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 63381 2 ICS 25.140.10 Compliance with
4、a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2012.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORMEN ISO 11148
5、7 August 2012 ICS 25.140.10 Supersedes EN 792-7:2001+A1:2008English Version Hand-held non-electric power tools - Safety requirements - Part 7: Grinders (ISO 11148-7:2012) Machines portatives moteur non lectrique - Exigences de scurit - Partie 7: Meuleuses (ISO 11148-7:2012) Handgehaltene nicht elek
6、trisch betriebene Maschinen - Sicherheitsanforderungen - Teil 7: Schleifmaschinen fr Schleifkrper (ISO 11148-7:2012) This European Standard was approved by CEN on 25 August 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
7、EuropeanStandard 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 Centre or to any CEN member. This European Standard exists in three official vers
8、ions (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 the official versions. CEN members are the national standards bodies of Austria,
9、 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, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Sw
10、itzerland, Turkey and United Kingdom. (8523($1$03/( *ULQGLQJZKHHOVFXWWLQJRIIZKHHOVGLDPRQGDQGUHLQIRUFHGZKHHOV VXSHUDEUDVLYHV ZLUHEUXVKHVDSGLVFVDQGDSZKHHOV3.3 SymbolsSymbol Description UnitC 5DGLDOGLPHQVLRQRIWKHDQJHFODPSLQJVXUIDFH mmdf2XWVLGHGLDPHWHURIWKHDQJHFODPSLQJVXUIDFH mmdf2%DFNLQJDQJHRXWVLGHGLDP
11、HWHU mmD Outside diameter of the abrasive wheel mmDg*XDUGGLDPHWHU mmFtTest load NG HSWKRIWKHDQJHUHFHVV mmH %RUHGLDPHWHURIWKHDEUDVLYHZKHHO mmP Rated power WnnomRated speed r/min4 Safety requirements and/or protective measures4.1 General7KHPDFKLQHVKDOOFRPSOZLWKWKHIROORZLQJVDIHWUHTXLUHPHQWVand/orSURWHF
12、WLYHPHDVXUHVDQGEHYHULHGLQDFFRUGDQFHZLWK&ODXVH,QDGGLWLRQWKHPDFKLQHVKDOOEHGHVLJQHGLQDFFRUGDQFHZLWKWKHSULQFLSOHVRIISO 12100IRUUHOHYDQWEXWQRWQHFHVVDULOVLJQLFDQWKDDUGVZKLFKDU HQRWGHDOWZLWKEWKLVSDUWRIISO 11148.7KHPHDVXUHVDGRSWHGWRFRPSOZLWKWKHUHTXLUHPHQWVRI&ODXVHVKDOOWDNHDFFRXQWRIWKHVWDWHRIWKHDUW,WLVUHFRJQ
13、LHGWKDWRSWLPLLQJWKHGHVLJQZLWKUHVSHFWWRVRPHVDIHWPHDVXUHVFDQUHVXOWLQDGHJUDGDWLRQRISHUIRUPDQFHDJDLQVWRWKHUVDIHWUHTXLUHPHQWV,QVXFKFDVHVLWLVUHTXLUHGWRQGDEDODQFHEHWZHHQ ISO 2012 All rights reserved 5 BS EN ISO 11148-7:2012ISO 11148-7:2012(E)WKHYDULRXVUHTXLUHPHQWVLQRUGHUWRDFKLHYHDJULQGHUGHVLJQWKDWVDWLVHVHD
14、FKUHTXLUHPHQWVRIDUDVLVUHDVRQDEOSUDFWLFDEOHDQGUHPDLQVWIRUSXUSRVH4.2 Mechanical safety 6XUIDFHVHGJHVDQGFRUQHUV$FFHVVLEOHSDUWVRIJULQGHUVHFHSWWKHLQVHUWHGWRROVKDOOQ RWKDYHVKDUSHGJHVRUDQJOHVRUURXJKRUDEUDVLYHVXUIDFHV VHH,62 6XSSRUWLQJVXUIDFHDQGVWDELOLWThe grinder shall be so designed that it can be laid as
15、ide and remain in a stable position on a plane surface. +GUDXOLFXLGHMHFWLRQ+GUDXOLFVVWHPVRIWKHJULQGHUVKDOOEHHQFORVHGVRDVWRSUR YLGHSURWHFWLRQDJDLQVWKLJKSUHVVXUHXLGHMHFWLRQ4.2.4 Speed controlThe rated speed of the grinder shall not be exceeded under the conditions marked on the grinder. It shall be po
16、ssible to measure rotational speed using a tachometer.7KHVSHHGFRQWUROGHYLFHRIDJULQGHUVKDOOEHGHVLJQHGWRSUHYHQWLQFRUUHFWDVVHPEO7KHVSHHGFRQWUROdevice shall be manufactured from non-corrodible material.4.2.5 Power tool constructionThe grinder shall be so designed and constructed as to prevent the loosen
17、ing or loss of components during expected XVHLQFOXGLQJURXJKKDQGOLQJDQGRFFDVLRQDOGURSSLQJZKLFKFD QFDXVHLWVVDIHWIXQFWLRQVWREHFRPSURPLVHG4.2.6 Attachment of abrasive product7KHJULQGHUVKDOOEHGHVLJQHGWRSUHYHQWWKHDEUDVLYHSURGXFWIURPFRPLQJORRVHIRULQVWDQFHXQVFUHZHGELQHUWLDDQGVSXQRIIDIWHUWKHVWRSFRPPDQGKDVEHH
18、QJLYHQ4.2.7 Spindles6SLQGOHVVKDOOEHGHVLJQHGVRWKDWWKHORFDWHDQGVHFXUHWKHDEUDVLYHSURGXFWAll grinders shall incorporate means to hold the spindle where a grinding wheel is being mounted or removed. )RUWKUHDGHGVSLQGOHVWKHGLUHFWLRQRIWKHVSLQGOHWKUHDGVVKDOOEHVXFKWKDWWKHFODPSLQJGHYLFHFROOHWRUwheel with threa
19、ded hole shall tend to tighten during grinding.,QRUGHUWRGHFUHDVHYLEUDWLRQVIRUVSLQGOHVZKLFKORFDWHDSO DLQERUHZKHHOWKHGLDPHWHUVKDOOKDYHDPDLPXPWRWDOLQGLFDWRUUHDGLQJRIPPWRWKHWUXHDLVRIWKHVSLQGOH VHH)LJXUH 6 ISO 2012 All rights reserved BS EN ISO 11148-7:2012ISO 11148-7:2012(E)Key1 machine spindle2 machine
20、 spindle with threads)LJXUH0DLPXPVSLQGOHUXQRXW)RUVSLQGOHVZLWKDWKUHDGHGSRUWLRQLQWHQGHGIRUORFDWLQJDEUDVLYHSURGXFWVZLWKWKUHDGHGERUHVWKHSLWFKGLDPHWHURIWKHWKUHDGVKDOOKDYHDPDLPXPWRWDOLQGLFDWRUUHDGLQJRIPPWRWKHWUXHDLVRIWKHVSLQGOH7KHGLDPHWHURIWKHSDUWZKLFKORFDWHVWKHDEUDVLYHSURGXFWVKDOOKDYHDWROHUDQFHRIHRUQDUUR
21、ZHU EXWQRWSUHVVW Spindles shall have a suitable means of receiving a tachometer. )ODQJHV4.2.8.1 General )ODQJHGHVLJQ)ODQJHVVKDOOEHGHVLJQHGVRWKDWWKHSURYLGHIRURUDLGLQ VHFXULQJDQGGULYLQJWKHDEUDVLYHSURGXFWVZKLFKDUHLQWHQGHGWREHXVHGZLWKWKHJULQGHU*ULQGHUVQRWGHVLJQHG IRUXVHZLWKFHUWDLQZKHHOVDUHQRWUHTXLUHGWRK
22、DYHDQJHVFDSDEOHRIPRXQWLQJVXFKZKHHOV127( :KHHOWSHVIRUZKLFKJULQGHUVDUHGHVLJQHGDUHHSHFWHGW REHLGHQWLHGLQWKHLQVWUXFWLRQVKDQGERRNZKLFKDFFRPSDQLHVWKHJULQGHURUHOVHRQWKHHWHULRURIWKHJULQGHU7KHGULYLQJDQJHVKDOOEHLQWHJUDOZLWKWKHVSLQGOHRUVKDOOEHPRXQWHGRQWKHVSLQGOHLQDPDQQHUWKDWSURYLGHVVXIFLHQWURWDWLRQDOGULYLQJDFW
23、LRQWRSUHYHQWVOLSSLQJRIWKHDEUDVLYHSURGXFW$SLORWLQJGLDPHWHU VHH)LJXUH VKDOOORFDWHWKHDEUDVLYHSURGXFWUDGLDOOWRWKHVKDIWRIWKHWRRO7KHDQJHDVVHPEOVKDOOKDYHWKHSLORWLQJGLDPHWHURQHLWKHUWKHGULYLQJRUWKHRXWHUDQJHRURQWKHVKDIWLWVHOI,WLVQRWSHUPLWWHGWRKDYHSLORWLQJGLDPHWHUVRQWZRSDUWVVLPXOWDQHRXVO ISO 2012 All rights re
24、served 7 BS EN ISO 11148-7:2012ISO 11148-7:2012(E)Key1 piloting diameterSmall indicator readings between the piloting diameter and the true axis of the spindle are essential to control the out-of-centre RIWKHZKHHODQGKHQFHWKHYLEUDWLRQV)URPWKLVSRLQWRIYLH ZDSLORWLQJGLDPHWHURQWKH GULYLQJDQJHLVUHFRPPHQGH
25、G)LJXUH)ODQJHSLORWLQJGLDPHWHU4.2.8.1.2 Chamfer and overlap)ODQJHVERWKGULYLQJDQGRXWHUVKDOOEHGHVLJQHGWRSUHYHQWSLHFHVRIWKHDEUDVLYHSURGXFWIURPVSOLQWHULQJGXHWRKLJKHGJHSUHVVXUHDULVLQJGXULQJFODPSLQJ7KHPRVWFRPPRQGHVLJQLVZLWKDFKDPIHURUUHFHVVDVVKRZQLQ)LJXUHKey1 chamfer or recessC DQJHFODPSLQJVXUIDFHdf RXWVLGH
26、GLDPHWHURIWKHDQJHFODPSLQJVXUIDFHG depth of the recessH bore diameter of the abrasive wheel)LJXUH3ULQFLSDOGLPHQVLRQVRIDQJHV8 ISO 2012 All rights reserved BS EN ISO 11148-7:2012ISO 11148-7:2012(E)7KHGLPHQVLRQVC and GLQ)LJXUHRIDQJHVIRUDOOZKHHOWSHVVKDOOEH3mm2f CdHG()2(1)G 0,5mm *HQHUDOWROHUDQFHRIFODPSLQ
27、JVXUIDFH7KHFODPSLQJVXUIDFHC VHH)LJXUH RIWKHDQJHVVKDOOUXQWUXHZLWKDWROHUDQFHJLYLQJDWRWDOLQGLFDWRUUHDGLQJRIPDLPXPRIWKHGLDPHWHUDWWKHSRVLWLRQRIWKH LQGLFDWRU7KHLQGLFDWRUVKDOOEHSRVLWLRQHGQHDUthe outside diameter. *HQHUDOWROHUDQFHRIDQJHV7KHSDUWRIWKHDQJHVZKLFKORFDWHVDQGJXLGHVWKHDEUDVLYHSURGXFWVZLWKXQWKUHDGHG
28、KROHVVKDOOKDYHDQRXWRIFHQWUHWROHUDQFHORZHUWKDQPP VHH)LJXUH 0DWHULDORIDQJHV7KHVWHHOLQWKHDQJHVVKDOOKDYHDPLQLPXPWHQVLOHVWUHQJWKRI1PP22WKHUPDWHULDOVPDEHXVHGLQZKLFKFDVHWKHDQJHVKDOOEHWHVWHGDQGIXOOWKHUHTXLUHPHQWVRI7KHPDWHULDOVKRXOGDOVRSURYLGHQHFHVVDUGXFWLOLW4.2.8.2 Type 1 wheels)ODQJHVLQDVHWVKDOOKDYHWKHVDPHFRQWDFWGLDPHWHUDQGVKDOOKDYHHTXDOFRQWDFWVXUIDFH)RUWSHZKHHOVWKHDQJHGLDPHWHUdfVKDOOEHdftD (2)where D is the outside diameter
