EN 792-7:2001+A1:2008

SLOVENSKI STANDARD
01-november-2008
1HHOHNWULþQDURþQDRURGMD9DUQRVWQH]DKWHYHGHO%UXVLOQLNL
Hand-held non-electric power tools - Safety requirements - Part 7: Grinders
Handgehaltene nicht-elektrisch betriebene Maschinen - Sicherheitsanforderungen - Teil
7: Schleifmaschinen für Schleifkörper
Machines portatives à moteur non électrique - Prescriptions de sécurité - Partie 7:
Meuleuses
Ta slovenski standard je istoveten z: EN 792-7:2001+A1:2008
ICS:
25.140.10 3QHYPDWLþQDRURGMD Pneumatic tools
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 792-7:2001+A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2008
ICS 25.140.99; 25.140.10 Supersedes EN 792-7:2001
English Version
Hand-held non-electric power tools - Safety requirements - Part
7: Grinders
Machines portatives à moteur non électrique - Prescriptions Handgehaltene nicht-elektrisch betriebene Maschinen -
de sécurité - Partie 7: Meuleuses Sicherheitsanforderungen - Teil 7: Schleifmaschinen für
Schleifkörper
This European Standard was approved by CEN on 3 November 2001 and includes Amendment 1 approved by CEN on 23 July 2008.

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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 792-7:2001+A1:2008: E
worldwide for CEN national Members.

Contents Page
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .6
3 Terms and definitions .7
3.1 General terms and definitions.7
3.2 Terms and definitions related to grinders.7
4 List of significant hazards .9
5 Safety requirements and measures.10
Mechanical safety .10
5.1
5.2 Thermal safety.12
5.3 Noise .13
5.4 Vibration .13
5.5 Materials and substances processed, used or exhausted.14
5.6 Ergonomics .14
5.7 Safety related measures and means.15
6 Information for use .15
6.1 Marking, signs and written warnings.15
6.2 Instruction for use .16
7 Verification .20
7.1 Noise .20
7.2 Vibration .20
7.3 Test of deformation of flanges .20
7.4 Test of guards .21
7.5 Unintentional start .22
7.6 Structure of verification of safety requirements .23
Annex A (informative) Examples of grinders covered by this standard.24
Annex B (informative) Symbols for labels and signs .25
Annex C (informative) List of abrasive products for hand-held grinders.26
Annex D (normative) Design, material and thickness of guards .31
Annex E (informative) Example of calculating procedure of clamping force .36
Annex F (informative) Example of flanges.40
Annex ZA (informative) !Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/EC".45
Annex ZB (informative) !Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC".46
Bibliography .47

Foreword
This document (EN 792-7:2001+A1:2008) has been prepared by 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 March 2009, and conflicting national standards shall be withdrawn at
the latest by December 2009.
This document includes Amendment 1, approved by CEN on 2008-07-23.
This document supersedes !EN 792-7:2001".
The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ".
This European Standard 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 Annexes ZA and ZB, which are integral parts of this
document."
The "European Committee of Manufacturers of Compressors, Vacuum Pumps and Pneumatic Tools",
PNEUROP, has given substantial contributions to this standard.
The standard has been created in close co-operation with CENELEC/TC 61F with the aim of achieving
requirements for mechanical safety in the EN 50144 series, which are similar for hand-held electric and non-
electric power tools.
NOTE Other technical committees in CEN dealing with hand-held power tools have been asked to follow the safety
requirements as in EN 792.
The annexes to this part of the standard are:
Annex A (informative) Examples of grinders covered by this standard
Annex B (informative) Symbols for labels and signs
Annex C (informative) List of abrasive products for hand-held grinders
Annex D (normative) Design, material and thickness of guards
Annex E (informative) Example of calculating procedure of clamping force
Annex F (informative) Example of flanges
!Annexes ZA and ZB" (informative) Relationship of this European Standard with EC Directives.
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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and United Kingdom.

Introduction
This European standard is a type C standard as stated in EN 1070.
The machinery concerned and the extent to which hazards, hazardous situations and events are covered are
indicated in the scope of this standard.
When provisions of this type C standard are different from those which are stated in type A or B standards, the
provisions of this type C standard take precedence over the provisions of other standards, for machines that
have been designed and built according to the provisions of this type C standard.
EN 792 consists of a number of independent parts for individual types of hand-held non-electric power tools.
Other European Standards deal with safety rules for hand-held power tools used in e.g. the following fields:
 agriculture and forestry such as chain saws, hedge-trimmers, brush cutters, grass trimmers;
 construction and building such as cutting-off power tools, concrete vibrators;
 food industry, such as fowl secateurs, sheep shears.
Endeavours have been made to achieve co-ordination with the relevant Technical Committees so that the
safety requirements are compatible.
This standard is divided in the following Parts:
Part 1: Assembly power tools for non-threaded mechanical fasteners (former Part 14)
Part 2: Cutting-off and crimping power tools (former Part 15)
Part 3: Drills and tappers
Part 4: Non rotary percussive power tools
Part 5: Rotary, percussive power 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: Small circular, small oscillating and reciprocating saws
Part 13: Fastener driving tools
Certain Parts of EN 792 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 European Standards of type A and B where such
standards are applicable.
1 Scope
This European Standard applies to hand-held non-electric power tools driven by rotary or linear motors,
powered by compressed air or hydraulic fluid and intended to be used by one operator and supported by:
 the operator's hand or hands;
 a harness;
 a suspension, e.g. a balancer.
This European Standard applies to hand-held non-electric power tools intended for grinding and cutting-off,
with bonded, coated and super abrasive products for use on all kinds of materials.
This European Standard lists the significant hazards caused by such power tools and specifies safety
requirements valid for different aspects of safety during their foreseeable lifetime.
This part of the standard covers power tools 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 to100 m/s;
 abrasive products with outside nominal diameter less than or equal to 230 mm;
 cutting-off wheels with outside nominal diameter less than or equal to 300 mm;
 wire brushes.
This Part of the standard does not apply to:
 die grinders with collets which are treated in EN 792-9;
 polishers and sanders which are treated in EN 792-8;
 cutting-off machines used for construction, rescue purposes which are driven by an internal combustion
engine which are treated in EN 1454.
There are no grinders covered by this Part of this European Standard driven by internal combustion engines.
Typical abrasive products used together with hand-held grinders are listed in annex C.
Special requirements and modifications on a hand-held power tool for the purpose of mounting it in a fixture
are not covered by this part.
NOTE At the date of publication no grinders driven by internal combustion engines are known.
...