SIST EN ISO 11148-7:2012
(Main)Hand-held non-electric power tools - Safety requirements - Part 7: Grinders (ISO 11148-7:2012)
Hand-held non-electric power tools - Safety requirements - Part 7: Grinders (ISO 11148-7:2012)
This part of ISO 11148 specifies safety requirements for hand-held non-electric power tools (hereinafter “grinders”) intended for grinding and cutting-off with abrasive products, for use on all kinds of materials. The grinders can be powered by compressed air or hydraulic fluid and are intended to be used by one operator and supported by the operator’s hand or hands, with or without a suspension, e.g. a balancer. NOTE 1 At the time of publication, no grinders driven by internal combustion engines are known (other than cuttingoff machines within the scope of ISO 19432). Once these are identified, it is intended to amend this part of ISO 11148 to
include such power tools. This part of ISO 11148 is applicable to grinders used with:
— abrasive products with a peripheral operating speed less than or equal to 80 m/s;
— cutting-off wheels with a peripheral operating speed less than or equal to 100 m/s;
— abrasive products with an outside nominal diameter less than or equal to 230 mm;
— cutting-off wheels with an outside nominal diameter less than or equal to 250 mm;
— wire brushes;
— diamond and reinforced (segmented) wheels with an outside nominal diameter less than or equal to 450 mm;
— flap discs and flap wheels.
NOTE 2 For examples of grinders, see Annex B.
NOTE 3 Typical abrasive products used together with hand-held grinders are listed in Annex D.
This part of ISO 11148 does not cover special requirements and modifications of grinders for the purpose of mounting them in fixtures. This part of ISO 11148 is not applicable to:
— die grinders with collets, which are treated in ISO 11148-9;
— polishers and sanders (i.e. tools used with coated abrasives except flap discs and flap wheels), which are treated in ISO 11148-8;
— cutting-off machines which are driven by internal combustion engines and are used for cutting construction materials, which are treated in ISO 19432;
— shaft-mounted wire brushes, which are treated in ISO 11148-9.
This part of ISO 11148 deals with all significant hazards, hazardous situations or hazardous events relevant to grinders when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer, with the exception of the use of grinders in potentially explosive atmospheres. NOTE 4 EN 13463-1 gives requirements for non-electrical equipment for potentially explosive atmospheres.
Handgehaltene nichtelektrisch betriebene Maschinen Sicherheitsanforderungen Teil 7: Schleifmaschinen für Schleifkörpe (ISO 11148-7:2012)
Dieser Teil der ISO 11148 gibt Sicherheitsanforderungen für handgehaltene nicht elektrisch betriebene
Maschinen (im nachstehenden Text als -Schleifmaschinen für Schleifmittel- bezeichnet) zum Schleifen und
Trennen mit Hilfe von Schleifmitteln an, die an sämtlichen Materialarten verwendet werden können. Die
Schleifmaschinen für Schleifmittel können durch Druckluft, über Hydraulikflüssigkeit oder
Verbrennungsmotoren betrieben werden und sind dazu bestimmt, durch eine Bedienungsperson verwendet
und von dieser ohne oder mit einer Halterung, z. B. einer Ausgleichseinrichtung, mit einer oder beiden
Händen gehalten zu werden.
ANMERKUNG 1 Zum Zeitpunkt der Veröffentlichung dieser Norm sind (mit Ausnahme von Trennschleifmaschinen, die
innerhalb des Anwendungsbereiches der ISO 19432 angegeben sind) keine Schleifmaschinen für Schleifmittel bekannt,
die durch Verbrennungsmotoren angetrieben werden. Sobald derartige Maschinen vorliegen, ist vorgesehen, diesen Teil
der ISO 11148 entsprechend abzuändern.
Dieser Teil der ISO 11148 ist auf Schleifmaschinen für Schleifmittel anzuwenden, die verwendet werden mit:
- Schleifmitteln mit einer Umfangsgeschwindigkeit von 80 m/s oder weniger;
- Trennschleifscheiben mit einer Umfangsgeschwindigkeit von 100 m/s oder weniger;
- Schleifmittel mit äußeren Maßen von 230 mm Nenndurchmesser oder weniger;
- Trennschleifscheiben mit äußeren Maßen von 250 mm Nenndurchmesser oder weniger;
- Drahtbürsten;
- Diamant- und verstärkte (Segment-)Trennschleifscheiben mit äußeren Maßen von 450 mm Nenndurchmesser
und weniger;
- Fächerscheiben und Flatterscheiben.
ANMERKUNG 2 Anhang B enthält Beispiele für Schleifmaschinen für Schleifmittel.
ANMERKUNG 3 Typische Schleifmittel, die zusammen mit handgehaltenen Schleifmaschinen für Schleifmittel
verwendet werden, sind in Anhang D angegeben.
In diesem Teil der ISO 11148 wird der folgende Punkt nicht behandelt:
- besondere Anforderungen an und Änderungen bezüglich Schleifmaschinen für Schleifmittel zum Zwecke
des Spannens in einer Halterung.
Dieser Teil der ISO 11148 gilt nicht für:
- Schleifmaschinen für Schleifstifte mit Spannzangen, die in ISO 11148-9 behandelt werden;
- Schleifmaschinen für Schleifblätter und Polierer, (d. h. Maschinen, die mit beschichteten Schleifmitteln,
außer Fächerscheiben und Flatterscheiben, verwendet werden), die in ISO 11148-8 behandelt werden;
Trennschleifmaschinen, die durch einen Verbrennungsmotor angetrieben werden und die zum Schneiden
von Baumaterialien, die in ISO 19432 behandelt werden, verwendet werden;
- an Schäften befestigte Drahtbürsten, die in ISO 11148-9 behandelt werden.
EN ISO 11148-7:2012 (D)
7
In diesem Teil der ISO 11148 werden alle signifikanten Gefährdungen, Gefährdungssituationen oder
Gefährdungsereignisse relevant für Schleifmaschinen für Schleifmittel behandelt, wenn sie für den dafür
vorgesehenen Verwendungszweck und unter für den Hersteller vorhersehbaren Missbrauchsbedingungen
angewendet werden, mit Ausnahme des Einsatzes von Schleifmaschinen für Schleifmittel in
explosionsfähigen Atmosphären.
ANMERKUNG 4 In EN 13463-1 sind Anforderungen für nicht elektrische Ausrüstung in explosionsfähigen Atmosphären
angegeben.
Machines portatives à moteur non électrique - Exigences de sécurité - Partie 7: Meuleuses (ISO 11148-7:2012)
L'ISO 11148-7:2012 spécifie les exigences de sécurité pour les machines portatives non électriques (ci-après référencées «meuleuses») destinées à être utilisées pour le meulage et le tronçonnage de toutes sortes de matériaux, à l'aide de produits abrasifs. Les meuleuses peuvent être alimentées par air comprimé ou fluide hydraulique, et sont prévues pour être utilisées par un seul opérateur et portées par la ou les mains de l'opérateur avec ou sans suspension, par exemple à l'aide d'un équilibreur.
L'ISO 11148-7:2012 s'applique aux types de meuleuses utilisées avec
des produits abrasifs dont la vitesse périphérique de travail est inférieure ou égale à 80 m/s,
des meules de tronçonnage dont la vitesse périphérique de travail est inférieure ou égale à 100 m/s,
des produits abrasifs dont le diamètre nominal extérieur est inférieur ou égal à 230 mm,
des meules de tronçonnage dont le diamètre nominal extérieur est inférieur ou égal à 250 mm,
des brosses métalliques,
des disques diamants et renforcés [segmentés] dont le diamètre extérieur nominal est inférieur ou égal à 450 mm, et
des roues à lamelles et des disques à lamelles.
L'ISO 11148-7:2012 ne couvre pas les exigences spécifiques et les modifications des meuleuses destinées à être montées dans un châssis.
Elle ne s'applique pas aux
meuleuses d'outillage avec pince de serrage qui font l'objet de l'ISO 11148-9,
polisseuses-lustreuses et ponceuses (c'est-à-dire, les outils utilisés avec abrasifs appliqués à l'exception des roues à lamelles et des disques à lamelles) qui font l'objet de l'ISO 11148-8,
tronçonneuses mues par moteur à combustion interne et utilisées pour couper les matériaux de construction, qui sont traitées dans l'ISO 19432, et
brosses métalliques montées sur arbre qui sont traitées dans l'ISO 11148-9.
Neelektrična ročna orodja - Varnostne zahteve - 7. del: Brusilniki (ISO 11148-7:2012)
Ta del standarda ISO 11148 določa varnostne zahteve za neelektrična ročna orodja (v nadaljevanju: »brusilniki«), namenjena za brušenje in odrezovanje z brusilnimi izdelki za uporabo na vseh vrstah materialov. Brusilniki uporabljajo stisnjeni zrak ali hidravlično tekočino in naj bi jih uporabljal en upravljavec, ki jih drži z eno ali obema rokama z blaženjem npr. uravnalnika ali brez.??? OPOMBA 1: v času izdaje brusilniki z motorjem z notranjim izgorevanjem niso znani (razen odrezovalnih strojev v okviru področja uporabe standarda ISO 19432). Ko bodo taki brusilniki opredeljeni, naj bi se v ta del standarda ISO 11148 vključila
ta orodja. Ta del standarda ISO 11148 se uporablja za brusilnike, ki se uporabljajo z:
– brusilnimi izdelki s periferno hitrostjo obratovanja, manjšo ali enako 80 m/s;
– rezalnimi ploščami s periferno hitrostjo obratovanja, manjšo ali enako 100 m/s;
– brusilnimi izdelki z zunanjim nominalnim premerom, manjšim ali enakim 230 mm;
– rezalnimi ploščami z zunanjim nominalnim premerom, manjšim ali enakim 250 mm;
– žičnimi krtačami;
– diamantnimi in okrepljenimi (segmentiranimi) rezalnimi ploščami z zunanjim nominalnim premerom, manjšim ali enakim 450 mm;
– lamelnimi brusi in lamelnimi rezalnimi ploščami.
OPOMBA 2: za primere brusilnikov glej dodatek B.
OPOMBA 3: za značilne brusilne izdelke, ki se uporabljajo z ročnimi brusilniki, glej dodatek D.
Ta del standarda ISO 11148 ne zajema posebnih zahtev in prilagoditev brusilnikov za namestitev na stojalo. Ta del standarda ISO 11148 se ne uporablja za:
– brusilnike z elastičnimi držali, ki so obravnavani v standardu ISO 11148-9;
– polirnike in peskalnike (tj. orodja, ki se uporabljajo z brusilnimi sredstvi, razen lamelnih brusov in lamelnih rezalnih plošč), ki jih obravnava standard ISO 11148-8;
– odrezovalne stroje s stroji z motorji z notranjim izgorevanjem, ki se uporabljajo za rezanje gradbenih materialov, ki jih obravnava standard ISO 19432;
– žične krtače, nameščene na os, ki so obravnavane v standardu ISO 11148-9;
Ta del standarda ISO 11148 opisuje vsa večja tveganja, nevarne situacije ali nevarne dogodke v zvezi z brusilniki, kadar se uporabljajo v skladu z njihovim namenom in pod pogoji pričakovane nepravilne uporabe, ki jih določa proizvajalec, razen uporabe brusilnikov v eksplozijsko ogroženem ozračju. OPOMBA 4: standard EN 13463-1 določa zahteve za uporabo neelektrične opreme v eksplozijsko ogroženem ozračju.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 11148-7:2012
01-oktober-2012
1DGRPHãþD
SIST EN 792-7:2002+A1:2008
1HHOHNWULþQDURþQDRURGMD9DUQRVWQH]DKWHYHGHO %UXVLOQLNL ,62
Hand-held non-electric power tools - Safety requirements - Part 7: Grinders (ISO 11148-
7:2012)
Handgehaltene nichtelektrisch betriebene Maschinen Sicherheitsanforderungen Teil 7:
Schleifmaschinen für Schleifkörpe (ISO 11148-7:2012)
Machines portatives à moteur non électrique - Exigences de sécurité - Partie 7:
Meuleuses (ISO 11148-7:2012)
Ta slovenski standard je istoveten z: EN ISO 11148-7:2012
ICS:
25.140.10 3QHYPDWLþQDRURGMD Pneumatic tools
SIST EN ISO 11148-7:2012 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 11148-7:2012
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SIST EN ISO 11148-7:2012
EUROPEAN STANDARD
EN ISO 11148-7
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2012
ICS 25.140.10 Supersedes EN 792-7:2001+A1:2008
English Version
Hand-held non-electric power tools - Safety requirements - Part
7: Grinders (ISO 11148-7:2012)
Machines portatives à moteur non électrique - Exigences Handgehaltene nicht elektrisch betriebene Maschinen -
de sécurité - Partie 7: Meuleuses (ISO 11148-7:2012) Sicherheitsanforderungen - Teil 7: Schleifmaschinen für
Schleifkörper (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 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 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 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, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11148-7:2012: E
worldwide for CEN national Members.
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SIST EN ISO 11148-7:2012
EN ISO 11148-7:2012 (E)
Contents Page
Foreword .3
Annex ZA (informative) Relationship between this International Standard and the Essential
Requirements of EU Directive 2006/42/EC .4
2
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SIST EN ISO 11148-7:2012
EN ISO 11148-7:2012 (E)
Foreword
This document (EN ISO 11148-7:2012) has been prepared by Technical Committee ISO/TC 118
"Compressors and pneumatic tools, machines and equipment" in collaboration with Technical Committee
CEN/TC 255 “Hand-held, non-electric power tools - Safety” the secretariat of which is held by SIS.
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 February 2013, and conflicting national standards shall be withdrawn
at the latest by February 2013.
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 identifying any or all such patent rights.
This document supersedes EN 792-7:2001+A1:2008.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document.
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, 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, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 11148-7:2012 has been approved by CEN as EN ISO 11148-7:2012 without any modification.
3
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SIST EN ISO 11148-7:2012
EN ISO 11148-7:2012 (E)
Annex ZA
(informative)
Relationship between this International Standard and
the Essential Requirements of EU Directive 2006/42/EC
This European Standard has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association to provide a means of conforming to Essential Requirements of the
New Approach Directive 2006/42/EC on machinery.
Once this standard is cited in the Official Journal of the European Union under that Directive and has been
implemented as a national standard in at least one Member State, compliance with the clauses of this
standard confers, within the limits of the scope of this standard, a presumption of conformity with the
corresponding Essential Requirements of that Directive and associated EFTA regulations.
WARNING — Other requirements and other EU Directives may be applicable to the product(s) falling
within the scope of this standard.
4
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SIST EN ISO 11148-7:2012
INTERNATIONAL ISO
STANDARD 11148-7
First edition
2012-08-15
Hand-held non-electric power tools —
Safety requirements —
Part 7:
Grinders
Machines portatives à moteur non électrique — Exigences de sécurité —
Partie 7: Meuleuses
Reference number
ISO 11148-7:2012(E)
©
ISO 2012
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SIST EN ISO 11148-7:2012
ISO 11148-7:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved
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SIST EN ISO 11148-7:2012
ISO 11148-7:2012(E)
Contents Page
Foreword .iv
Introduction . v
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
3.1 General terms and definitions . 2
3.2 Terms and definitions related to grinders . 4
3.3 Symbols . 5
4 Safety requirements and/or protective measures . 5
4.1 General . 5
4.2 Mechanical safety . 6
4.3 Thermal safety .21
4.4 Noise reduction .22
4.5 Vibration .22
4.6 Materials and substances processed, used or exhausted .23
4.7 Ergonomics .23
4.8 Controls .23
5 Verification .24
5.1 General conditions for the tests .24
5.2 Noise .24
5.3 Vibration .24
5.4 Test of deformation of flanges .24
5.5 Test of guards .25
5.6 Unintentional start .26
5.7 Power tool construction .27
5.8 Test of alternative flanges .27
5.9 Structure of verification of safety requirements .28
6 Information for use .29
6.1 Marking, signs and written warnings .29
6.2 Instructions handbook .30
6.3 Operating instructions .35
6.4 Data .36
6.5 Maintenance instructions .36
Annex A (informative) List of significant hazards .38
Annex B (informative) Examples of grinders covered by this part of ISO 11148 .40
Annex C (normative) Symbols for labels and signs.42
Annex D (informative) Examples of abrasive products for hand-held grinders .43
Annex E (informative) Example of calculating procedure of clamping force .50
Bibliography .54
© ISO 2012 – All rights reserved iii
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SIST EN ISO 11148-7:2012
ISO 11148-7:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International
Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 11148-7 was prepared by Technical Committee ISO/TC 118, Compressors and pneumatic tools, machines
and equipment, Subcommittee SC 3, Pneumatic tools and machines.
ISO 11148 consists of the following parts, under the general title Hand-held non-electric power tools — Safety
requirements:
— Part 1: Assembly power tools for non-threaded mechanical fasteners
— Part 2: Cutting-off and crimping power tools
— Part 3: Drills and tappers
— Part 4. Non-rotary percussive power tools
— Part 5: Rotary percussive drills
— Part 6: Assembly power tools for threaded fasteners
— Part 7: Grinders
— Part 8: Sanders and polishers
— Part 9: Die grinders
— Part 10: Compression power tools
— Part 11: Nibblers and shears
— Part 12: Circular, oscillating and reciprocating saws
A Part 13 dealing with fastener driving tools is under preparation.
iv © ISO 2012 – All rights reserved
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SIST EN ISO 11148-7:2012
ISO 11148-7:2012(E)
Introduction
This document is a type-C standard as stated in ISO 12100.
The machinery concerned and the extent to which hazards, hazardous situations and events are covered are
defined in the Scope of this part of ISO 11148.
When requirements of this type-C standard are different from those which are stated in type-A or -B standards,
the requirements of this type-C standard take precedence over the requirements of other standards, for
machines that have been designed and built according to the requirements of this type-C standard.
ISO 11148 consists of a number of independent parts for individual types of hand-held non-electric power tools.
Certain parts of ISO 11148 cover hand-held non-electric power tools driven by internal combustion engines
powered by gaseous or liquid fuel. In these parts, the safety aspects relating to internal combustion engines
are found in a normative annex.
The parts are type-C standards and refer to pertinent standards of type A and B where such standards are applicable.
© ISO 2012 – All rights reserved v
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SIST EN ISO 11148-7:2012
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SIST EN ISO 11148-7:2012
INTERNATIONAL STANDARD ISO 11148-7:2012(E)
Hand-held non-electric power tools — Safety requirements —
Part 7:
Grinders
IMPORTANT — The colours represented in the electronic file of this document can be neither viewed
on screen nor printed as true representations. For the purposes of colour matching, see ISO 3864-4,
which provides colorimetric and photometric properties together with, as a guideline, references from
colour order systems.
1 Scope
This part of ISO 11148 specifies safety requirements for hand-held non-electric power tools (hereinafter
“grinders”) intended for grinding and cutting-off with abrasive products, for use on all kinds of materials. The
grinders can be powered by compressed air or hydraulic fluid and are intended to be used by one operator and
supported by the operator’s hand or hands, with or without a suspension, e.g. a balancer.
NOTE 1 At the time of publication, no grinders driven by internal combustion engines are known (other than cutting-
off machines within the scope of ISO 19432). Once these are identified, it is intended to amend this part of ISO 11148 to
include such power tools.
This part of ISO 11148 is applicable to grinders used with:
— abrasive products with a peripheral operating speed less than or equal to 80 m/s;
— cutting-off wheels with a peripheral operating speed less than or equal to 100 m/s;
— abrasive products with an outside nominal diameter less than or equal to 230 mm;
— cutting-off wheels with an outside nominal diameter less than or equal to 250 mm;
— wire brushes;
— diamond and reinforced (segmented) wheels with an outside nominal diameter less than or equal to 450 mm;
— flap discs and flap wheels.
NOTE 2 For examples of grinders, see Annex B.
NOTE 3 Typical abrasive products used together with hand-held grinders are listed in Annex D.
This part of ISO 11148 does not cover special requirements and modifications of grinders for the purpose of
mounting them in fixtures.
This part of ISO 11148 is not applicable to:
— die grinders with collets, which are treated in ISO 11148-9;
— polishers and sanders (i.e. tools used with coated abrasives except flap discs and flap wheels), which are
treated in ISO 11148-8;
— cutting-off machines which are driven by internal combustion engines and are used for cutting construction
materials, which are treated in ISO 19432;
— shaft-mounted wire brushes, which are treated in ISO 11148-9.
© ISO 2012 – All rights reserved 1
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SIST EN ISO 11148-7:2012
ISO 11148-7:2012(E)
This part of ISO 11148 deals with all significant hazards, hazardous situations or hazardous events relevant to
grinders when they are used as intended and under conditions of misuse which are reasonably foreseeable by
the manufacturer, with the exception of the use of grinders in potentially explosive atmospheres.
NOTE 4 EN 13463-1 gives requirements for non-electrical equipment for potentially explosive atmospheres.
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, the latest edition of the referenced document
(including any amendments) applies.
ISO 3857-3, Compressors, pneumatic tools and machines — Vocabulary — Part 3: Pneumatic tools and machines
ISO 5391, Pneumatic tools and machines — Vocabulary
ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction
ISO 13732-1, Ergonomics of the thermal environment — Methods for the assessment of human responses to
contact with surfaces — Part 1: Hot surfaces
ISO 13732-3, Ergonomics of the thermal environment — Methods for the assessment of human responses to
contact with surfaces — Part 3: Cold surfaces
ISO 15744, Hand-held non-electric power tools — Noise measurement code — Engineering method (grade 2)
ISO 17066, Hydraulic tools — Vocabulary
ISO 20643, Mechanical vibration — Hand-held and hand-guided machinery — Principles for evaluation of
vibration emission
ISO 28927-1:2009, Hand-held portable power tools — Test methods for evaluation of vibration emission —
Part 1: Angle and vertical grinders
ISO 28927-4, Hand-held portable power tools — Test method for evaluation of vibration emission — Part 4:
Straight grinders
EN 10111, Continuously hot rolled low carbon steel sheet and strip for cold forming — Technical delivery conditions
EN 10130, Cold rolled low carbon steel flat products for cold forming — Technical delivery conditions
EN 12096, Mechanical vibration — Declaration and verification of vibration emission values
EN 12418, Masonry and stone cutting-off machines for job site — Safety
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 3857-3, ISO 5391, ISO 12100 and
ISO 17066 (for hydraulic tools) and the following apply.
3.1 General terms and definitions
3.1.1
hand-held power tool
machine operated by one or two hands and driven by rotary or linear motors powered by compressed air,
hydraulic fluid, gaseous or liquid fuel, electricity or stored energy (e.g. by a spring) to do mechanical work and so
designed that the motor and the mechanism form an assembly that can easily be brought to its place of operation
NOTE Hand-held power tools driven by compressed air or gas are called pneumatic tools (or air tools). Hand-held
power tools driven by hydraulic liquid are called hydraulic tools.
2 © ISO 2012 – All rights reserved
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SIST EN ISO 11148-7:2012
ISO 11148-7:2012(E)
3.1.2
inserted tool
tool inserted in the grinder to perform the intended work
3.1.3
service tool
tool intended for performing maintenance or service on the grinder
3.1.4
control device
device to start and stop the grinder or to change the direction of the rotation or to control the functional
characteristics, such as speed and power
3.1.5
start-and-stop device
throttle
manually operated control on the grinder by which the energy supply to the motor can be turned on and off
3.1.6
hold-to-run start-and-stop device
constant-pressure throttle
start-and-stop device that automatically returns to the OFF position when force on the start and stop device
actuator is released
3.1.7
lock-on start-and-stop device
constant pressure throttle with instant release lock
hold-to-run start-and-stop device that can be locked in the ON position and designed so that it permits the
grinder to be turned off by a single motion of the same finger or fingers used to turn it on
3.1.8
lock-off start-and-stop device
lock-off throttle
start-and-stop device that automatically latches in the OFF position when the actuator is released and where
two motions are required to energize the grinder
3.1.9
positive on-off start-and-stop device
positive on-off throttle
start and stop device that remains in an ON position until it is manually changed
3.1.10
maximum operating pressure
maximum pressure at which a grinder may be operated
3.1.11
whip hose
air hose connecting the main air hose with an air tool for the purpose of providing more flexibility
3.1.12
rated air pressure
air pressure, required at an air tool inlet port to ensure rated performance of the tool, also considered the
maximum pressure at which the tool may be operated
3.1.13 Rated speed
3.1.13.1
rated speed
〈pneumatic tool〉 speed of an air tool at no load and rated air pressure at the tool inlet port
NOTE 1 The rated speed is expressed in revolutions per minute.
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SIST EN ISO 11148-7:2012
ISO 11148-7:2012(E)
NOTE 2 The rated speed is also considered the maximum speed at which an abrasive tool, such as a grinder, may be
operated.
3.1.13.2
rated speed
〈hydraulic tool〉 nominal speed of a hydraulic tool at no load and rated flow at the tool inlet port
NOTE 1 The rated speed is expressed in revolutions per minute.
NOTE 2 The rated speed is also considered the maximum speed at which an abrasive tool, such as a grinder, may be
operated.
3.1.14
maximum attainable speed
maximum speed which the tool can achieve under the most adverse condition of possible maladjustment or
malfunction of its speed control devices, when supplied with compressed air at the pressure marked on the
grinder or when supplied with hydraulic fluid at the maximum flow rate marked on the grinder
3.1.15
suspension device
device, which is attached to the tool, whose primary purpose is to reduce the strain on the operator caused by
the mass of the tool
NOTE The device can also have a secondary purpose of transmitting a reaction torque.
3.2 Terms and definitions related to grinders
3.2.1
grinder
hand-held power tool driving a rotary output spindle adapted in order to carry an abrasive wheel/product for
material removal
NOTE A grinder equipped with a cutting-off wheel is often called a cutting-off machine. For examples of grinders, see
Annex B.
3.2.2
machine spindle
shaft of the grinder that supports, locates and drives the abrasive product
3.2.3
flange
disc, normally of metal, mounted on the machine spindle to support and clamp the abrasive wheel/product
3.2.4
flange set
means provided to clamp an unthreaded abrasive product, on the rotating machine spindle
3.2.5
backing flange
driving flange
flange that is affixed to, or integral with, the spindle and is assembled before the abrasive wheel/product
3.2.6
front flange
outer flange
flange that is placed on the grinder’s spindle after the abrasive wheel/product, which is secured by the
spindle end nut
3.2.7
flange contact diameter
d
f
outside diameter of the clamping surface of a flange
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SIST EN ISO 11148-7:2012
ISO 11148-7:2012(E)
3.2.8
guard
device that partly encloses the abrasive wheel/product
3.2.9
blotter
thin piece of a compressible material placed between the abrasive wheel/product and the flange of the grinder
3.2.10
tightening torque
torque for tightening the clamping device that fastens the abrasive product to the machine spindle
3.2.11
maximum operating speed of an abrasive wheel/product
maximum peripheral speed of an abrasive wheel/product, as specified by the manufacturer of the abrasive product
NOTE It is expressed in metres per second [m/s (or sfpm)].
3.2.12
abrasive product
common term for products used for abrasive material removal
EXAMPLE Grinding wheels, cutting-off wheels, diamond and reinforced wheels (superabrasives), wire brushes, flap
discs and flap wheels.
3.3 Symbols
Symbol Description Unit
C Radial dimension of the flange clamping surface mm
d Outside diameter of the flange clamping surface mm
f
d Backing flange outside diameter mm
f2
D Outside diameter of the abrasive wheel mm
D Guard diameter mm
g
F Test load N
t
G Depth of the flange recess mm
H Bore diameter of the abrasive wheel mm
P Rated power W
n Rated speed r/min
nom
4 Safety requirements and/or protective measures
4.1 General
The machine shall comply with the following safety requirements and/or protective measures and be verified
in accordance with Clause 5. In addition, the machine shall be designed in accordance with the principles of
ISO 12100 for relevant, but not necessarily significant, hazards which are not dealt with by this part of ISO 11148.
The measures adopted to comply with the requirements of Clause 4 shall take account of the state of the art.
It is recognized that optimizing the design with respect to some safety measures can result in a degradation
of performance against other safety requirements. In such cases, it is required to find a balance between
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SIST EN ISO 11148-7:2012
ISO 11148-7:2012(E)
the various requirements in order to achieve a grinder design that satisfies each requirement, so far as is
reasonably practicable, and remains fit for purpose.
4.2 Mechanical safety
4.2.1 Surfaces, edges and corners
Accessible parts of grinders, except the inserted tool, shall not have sharp edges or angles or rough or abrasive
surfaces (see ISO 12100:2010, 6.2.2.1).
4.2.2 Supporting surface and stability
The grinder shall be so designed that it can be laid aside and remain in a stable position on a plane surface.
4.2.3 Hydraulic fluid ejection
Hydraulic systems of the grinder shall be enclosed so as to provide protection against high-pressure fluid
...
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