SIST EN 60745-2-3:2011

SLOVENSKI STANDARD
SIST EN 60745-2-3:2011
01-maj-2011
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SIST EN 60745-2-3:2007
SIST EN 60745-2-3:2007/A11:2010
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Hand-held motor-operated electric tools - Safety - Part 2-3: Particular requirements for
grinders, polishers and disk-type sanders (IEC 60745-2-3:2006, modified + A1:2010,
modified + A1:2010/corrigendum Feb. 2011)
Handgeführte motorbetriebene Elektrowerkzeuge - Sicherheit - Teil 2-3: Besondere
Anforderungen für Schleifer, Polierer und Schleifer mit Schleifblatt (IEC 60745-2-3:2006,
modifiziert + A1:2010, modifiziert + A1:2010/corrigendum Feb. 2011)
Outils électroportatifs à moteur - Sécurité - Partie 2-3: Règles particulières pour les
meuleuses, lustreuses et ponceuses du type à disque (CEI 60745-2-3:2006, modifiée +
A1:2010, modifiée + A1:2010/corrigendum Feb. 2011)
Ta slovenski standard je istoveten z: EN 60745-2-3:2011
ICS:
25.080.50 Brusilni in polirni stroji Grinding and polishing
machines
25.140.20 (OHNWULþQDRURGMD Electric tools
SIST EN 60745-2-3:2011 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60745-2-3:2011

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SIST EN 60745-2-3:2011

EUROPEAN STANDARD
EN 60745-2-3

NORME EUROPÉENNE
February 2011
EUROPÄISCHE NORM

ICS 25.140.20 Supersedes EN 60745-2-3:2007 + A11:2009


English version


Hand-held motor-operated electric tools -
Safety -
Part 2-3: Particular requirements for grinders,
polishers and disk-type sanders
(IEC 60745-2-3:2006, modified + A1:2010, modified
+ A1:2010/corrigendum Feb. 2011)

Outils électroportatifs à moteur -  Handgeführte motorbetriebene
Sécurité - Elektrowerkzeuge -
Partie 2-3: Règles particulières pour les Sicherheit -
meuleuses, lustreuses et ponceuses du Teil 2-3: Besondere Anforderungen für
type à disque Schleifer, Polierer und Schleifer mit
(CEI 60745-2-3:2006, modifiée Schleifblatt
+ A1:2010, modifiée (IEC 60745-2-3:2006, modifiziert
+ A1:2010/corrigendum Feb. 2011) + A1:2010, modifiziert
+ A1:2010/corrigendum Feb. 2011)


This European Standard was approved by CENELEC on 2011-02-01. 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 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 responsibility 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, France, 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.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für 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.
Ref. No. EN 60745-2-3:2011 E

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SIST EN 60745-2-3:2011
EN 60745-2-3:2011 – 2 –
Foreword
The text of the International Standard IEC 60745-2-3:2006 + A1:2010, 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 hand-held motor-operated electric tools,
was submitted to the formal vote and was approved as EN 60745-2-3:2011 on 2011-02-01.
This European Standard supersedes EN 60745-2-3:2007 + A11:2009.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the amendment has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2012-02-01

– latest date by which the national standards conflicting
with the amendment have to be withdrawn (dow) 2014-02-01
This European Standard is divided into two parts:
Part 1: General requirements which are common to most hand-held 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 tools which either supplement or modify the
requirements given in Part 1 to account for the particular hazards and characteristics of
these specific tools.
This European Standard has been prepared under Mandate 396 given to CENELEC by the European
Commission and the European Free Trade Association and covers essential requirements of
EC Directive 2006/42/EC. See Annex ZZ.
Compliance with the clauses of Part 1 together with this Part 2-3 provides one means of conforming
with the essential health and safety requirements of the Directive concerned.
Warning: Other requirements and other EC Directives can be applicable to the products falling
within the scope of this standard.
CEN/TC 255 is producing standards for non-electric grinders (EN 792-7), polishers and sanders
(EN 792-8) and die grinders (EN 792-9).
This European Standard follows the overall requirements of EN ISO 12100-1 and EN ISO 12100-2.
This Part 2-3 is to be used in conjunction with EN 60745-1:2009. When this standard states "addition",
"modification" or "replacement", the relevant text in Part 1 is to be adapted accordingly.

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SIST EN 60745-2-3:2011
– 3 – EN 60745-2-3:2011
Subclauses, tables and figures which are additional to those in Part 1 are numbered starting from 101.
Subclauses, tables and figures which are additional to those in IEC 60745-2-3:2006 + A1:2010 are
prefixed “Z”.
Annexes ZA and ZZ have been added by CENELEC.
NOTE In this standard the following print types are used:
- requirements proper; in roman type;
- test specifications: in italic type;
- explanatory matter: in smaller roman type.

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SIST EN 60745-2-3:2011
EN 60745-2-3:2011 – 4 –
Endorsement notice
The text of the International Standard IEC 60745-2-3:2006 + A1:2010 was approved by CENELEC as
a European Standard with agreed common modifications as given below.
COMMON MODIFICATIONS
2 Normative references
Add the following normative references:
EN 62061:2005, Safety of machinery – Functional safety of safety-related electrical, electronic and
programmable electronic control systems (IEC 62061:2005)
EN ISO 13849-1:2008, Safety of machinery – Safety related parts of control systems – Part 1: General
principles for design (ISO 13849-1:2006)
3 Terms and Definitions
Add the following definitions:
3.Z101
Performance Level
PL
discrete level used to specify the ability of safety-related parts of control systems to perform a safety
function under foreseeable conditions
3.Z102
Safety Integrity Level
SIL
discrete level (one out of possible three) for specifying the safety integrity of a safety related control
function, where safety integrity level three has the highest level of safety integrity and safety integrity
level one has the lowest
6 Void
Replace by:
6 Environmental requirements
This clause of Part 1 is applicable except as follows:
6.1.2.4 Modification:
Grinders, polishers and disk-type sanders are suspended. For angle and vertical tools, the wheel or
pad shall be horizontal. For straight tools, the wheel or pad shall be vertical.
6.1.2.5  Modification:
Grinders, polishers and disk-type sanders are tested at no-load.

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SIST EN 60745-2-3:2011
– 5 – EN 60745-2-3:2011
6.2.4.2 Location of measurement
Addition:
Figures Z104 to Z106 show the positions for different types of tools.
6.2.6.3 Operating conditions
Addition:
The weight of the tool is considered the weight of the complete tool as prepared for the test with all
equipment needed for normal use and with the artificial wheel mounted, but without the cable.
6.2.6.3.101 Grinding
Tools for grinding applications shall be tested under load by using the artificial wheel under the
conditions described below in Table Z101 for angle grinding and in Table Z104 for straight grinding.
Table Z101 – Test conditions for angle grinding
Orientation Tool to be held as in normal use for grinding a horizontal plate.
Tool bit Artificial wheel as specified in Figure Z102 of a diameter equivalent to the
rated capacity and dimensions in accordance with Table Z102.
When using the artificial wheel, start with a diameter (e -1 mm) and
increase the size at the hole in stages of 1/10 mm until the required
unbalance is obtained.
Feed force Applied at a position as close as that in normal use.
The feed force is specified in Table Z103 and obtained by applying an
upward force equal to the sum of the intended feed force and the weight of
the tool.
The upward force is normally applied using the threaded holes for the
support handle. For tools where the support handle can be mounted on
either side, insert an extra bolt in the empty hole. Fix a short sling of cord
from the extra bolt to the inner part of the support handle. Fix the cord used
for applying the upward force in that sling.
On tools with antivibration handles, the sling shall be attached between the
tool body and the handle without blocking the antivibration function.
The tool being suspended on a cord, the force can be applied using a
weight (see Figure Z101) or, alternatively, a dynamometer can be attached
to the cord. The application of force shall be achieved with minimum
adaptation to the machine.
NOTE Any weight added to the tool e.g. fixing devices for the upward force will alter the
inertia of the tool and thereby reduce the vibration magnitude.
Test cycle A test cycle is given by conducting a measurement for at least 10 s.

After each test the wheel shall be loosened and repositioned 360° / 5 = 72°
from its previous position on the shaft.
Three series of five consecutive tests shall be carried out using a different
operator for each series.

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SIST EN 60745-2-3:2011
EN 60745-2-3:2011 – 6 –
Table Z102 – Dimensions of the artificial wheel of Figure Z102 for angle grinding
ø a ø b c ø d ø e Unbalance
mm mm mm mm mm g mm
100 ± 0,2 16,0 6 ± 0,05 70 ± 0,02 11,4 58
115 ± 0,2 22,23 6 ± 0,05 80 ± 0,02 12,2 76
125 ± 0,2 22,23 6 ± 0,05 90 ± 0,02 12,5 90
150 ± 0,2 22,23 6 ± 0,05 120 ± 0,02 13,0 130
180 ± 0,2 22,23 6 ± 0,05 150 ± 0,02 14,1 190
230 ± 0,2 22,23 6 ± 0,05 200 ± 0,02 15,5 305

Table Z103 – Feed force
ø a
100 115 125 150 180 230
mm
Feed force
40 40 40 40 60 60
N (± 5 N)

Table Z104 – Test conditions for straight grinding
Orientation Tool to be held as in normal use for grinding a horizontal plate
Tool bit Artificial wheel as specified in Figure Z103 of a diameter equivalent to the
rated capacity and dimensions in accordance with Table Z105.
When using the artificial wheel, start with a diameter (e -1 mm) and
increase the size at the hole in stages of 1/10 mm until the required
unbalance is obtained.
Feed force Applied at a position as close as that in normal use.
For a rated capacity less than or equal to 55 mm, the feed force is 20 N,
and for a rated capacity exceeding 55 mm, the feed force is 50 N.
The feed force is obtained by applying an upward force equal to the sum of
the intended feed force and the weight of the tool.
The upward force is applied to the front part of the handle or gripping area
closest to the wheel.
On tools with antivibration handles, the upward force shall be applied
without blocking the antivibration function.
The force can be applied using a weight (see Figure Z101) or, alternatively,
a dynamometer can be attached. The application of force shall be achieved
with minimum adaptation to the machine.
NOTE Any weight added to the tool e.g. fixing devices for the upward force will alter the
inertia of the tool and thereby reduce the vibration magnitude.
Test cycle A test cycle is given by conducting a measurement for at least 10 s.

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SIST EN 60745-2-3:2011
– 7 – EN 60745-2-3:2011
Table Z105 – Dimensions of the artificial wheel of Figure Z103 for straight grinding
ø a ø b c ø d ø e Unbalance
mm mm mm mm mm g mm
25 ± 0,2 4,0 10 ± 0,05 18 ± 0,02 4,3 3,6
50 ± 0,2 4,0 10 ± 0,05 35 ± 0,02 6,2 14,5
80 ± 0,2 4,0 10 ± 0,05 65 ± 0,02 7,1 37
100 ± 0,2 19,0 25 ± 0,05 70 ± 0,02 5,6 58
125 ± 0,2 19,0 25 ± 0,05 90 ± 0,02 6,1 90
150 ± 0,2 19,0 25 ± 0,05 120 ± 0,02 6,4 130
200 ± 0,2 19,0 25 ± 0,05 170 ± 0,02 7,1 230

6.2.6.3.102 Polishing
Tools for polishing applications are tested under load and under the conditions described below in
Table Z106.
Table Z106 – Test conditions for polishing
Orientation Polishing a horizontal steel plate of min. 400 mm × 400 mm × 20 mm
mounted on a bench
Tool bit Polishing pad
Feed force Vertical force applied in addition to the weight of the tool:
- (30 ± 5) N, if the mass of the tool is less than 1,5 kg;
- (50 ± 5) N, if the mass of the tool is equal or greater than 1,5 kg;
or the force necessary to obtain rated input, whichever is the lower.
Test cycle A test cycle is given by conducting a measurement for at least 10 s

6.2.6.3.103 Disc-type sanding
Tools for disc-type sanding applications are tested under load and under the conditions described
below in Table Z107.
Table Z107 – Test conditions for disc-type sanding
Orientation Sanding a horizontal steel plate of min. 400 mm × 400 mm × 20 mm
mounted on a bench
Tool bit Recommended sanding disc for steel with a grain size of 180
Feed force Vertical force applied in addition to the weight of the tool:
- (30 ± 5) N, if the mass of the tool is less than 1,5 kg;
- (50 ± 5) N, if the mass of the tool is equal or greater than 1,5 kg;
or the force necessary to obtain rated input, whichever is the lower.
Pre-test requirements With a new sanding disc carry out 1 min sanding before starting
measurements
Test cycle A test cycle is given by conducting a measurement for at least 10 s

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SIST EN 60745-2-3:2011
EN 60745-2-3:2011 – 8 –
6.2.6.4 Operator
Replacement:
The vibration of the machine is influenced by the operators. The operators shall therefore be skilled
enough to be able to hold the tool in a manner similar to that used in real grinding. Also the angle of
attack should equal to that used in real grinding on a horizontal surface (e.g. for angle grinders
20° ± 5°).
The forces and torques applied to the handles influence the vibration. It is therefore important that the
force and torque distribution between the handles equals that in real use.
6.2.7.1 Reported vibration value
Addition:
If more than one operating mode was measured, the result a for each operating mode applicable
h
shall be reported.
a or a = mean vibration for straight grinding or angle grinding in accordance with
h,SG h,AG
6.2.6.3.101
a = mean vibration for polishing in accordance with 6.2.6.3.102
h,P
a = mean vibration for disc-type sanding in accordance with 6.2.6.3.103
h,DS
Underestimation of the vibration for tools equipped with technical means to automatically reduce
unbalances shall be taken into account by multiplying the vibration values of such tools with a
correction factor of 1,3.
In cases, where the measurement was done at practical use with specific discs, information about the
operating conditions (such as specification of the disk used, work piece material, feed force) shall be
reported.
6.2.7.2 Declaration of the vibration total value
Addition:
For the following applications of the tool, if recommended in the instruction manual, the vibration total
value of the handle with the highest emission and the uncertainty K shall be declared:
- for grinding applications
the value of a or a with the work mode description “surface grinding”;
h,SG h,AG
- for polishing applications
the value of a with the work mode description “polishing”;
h,P
- for disc type sanding applications
the value of a with the work mode description “disc sanding”.
h,DS
In addition, the information shall be given in the instruction manual that other applications such as
cutting-off or wire brushing, may have different vibration emission values.
18 Abnormal operation
Add:
18.10 Addition:
When evaluating the tool in accordance with 18.10, an electronic restart prevention device need not
operate.

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SIST EN 60745-2-3:2011
– 9 – EN 60745-2-3:2011
19 Mechanical hazards
Add:
19.Z101 For wheel guards that are to be removed as a part of maintenance procedure, as described
in the instruction manual, the fastenings shall remain attached to the guard or to the tool.
Compliance is checked by inspection.
21 Construction
Replace 21.18.1 by the following:
21.18.1 Replacement:
The switch shall be of momentary contact type.
For single phase angle grinders with a rated capacity greater than 155 mm and for single phase
straight grinders with a rated capacity greater than 130 mm, either
- the mains switch shall automatically switch off the motor as soon as the actuating member of the
switch is released and shall have no locking arrangement in the “on” position
or
- the tool shall not restart after an interruption of the mains supply without releasing and reactuating
the switch. In this case, a lock-on device is allowed provided that two dissimilar actions are
necessary to lock the switch in the “on” position. In addition, only a single motion to the actuating
member of the switch shall be required for the switch to automatically return to the “off” position.
The restart prevention device shall have a Safety Integrity Level SIL 1, in accordance with
EN 62061, or a performance level PL = b in accordance with EN ISO 13849-1.
For all other tools, a lock-on device is allowed provided that two dissimilar actions are necessary to
lock the switch in the “on” position. In addition, only a single motion to the actuating member of the
switch shall be required for the switch to automatically return to the “off” position.
Compliance is checked by inspection and manual test.
Add after the existing Subclause 21.32:
21.Z1 Addition:

Disc-type sanders exclusively for sanding wooden floors are considered to be tools where a
considerable amount of dust is produced.

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SIST EN 60745-2-3:2011
EN 60745-2-3:2011 – 10 –
Figures
Add the following new figures:

Key
1 weight of grinder
2 feed force weight
3 application of feed force using a sling of cord
4 grinder is suspended at an angle of 20° ± 5° to the horizontal
Figure Z101 – Working positions of operator and application of force

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SIST EN 60745-2-3:2011
– 11 – EN 60745-2-3:2011
Dimensions in millimetres

Figure Z102 – Artificial grinding wheel for angle grinding

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SIST EN 60745-2-3:2011
EN 60745-2-3:2011 – 12 –
Dimensions in millimetres

Figure Z103 – Artificial grinding wheel for straight grinding

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SIST EN 60745-2-3:2011
– 13 – EN 60745-2-3:2011

Figure Z104 – Positions of transducers for straight grinders

Figure Z105 – Positions of transducers for angle grinders
..
Figure Z106 – Positions of transducers for polishers and disk-type sanders

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SIST EN 60745-2-3:2011
EN 60745-2-3:2011 – 14 –
Annexes
Add the following annexes:
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
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.
NOTE  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 62061 2005 Safety of machinery – Functional safety of safety- EN 62061 2005
related electrical, electronic and programmable
electronic control systems
ISO 603-12 1999 Bonded abrasive products – Dimensions – - -
Part 12: Grinding wheels for deburring and fettling
on a straight grinder
ISO 603-14 1999 Bonded abrasive products – Dimensions – - -
Part 14: Grinding wheels for deburring and
fettling/snagging on an angle grinder
ISO 603-16 1999 Bonded abrasive products – Dimensions – - -
Part 16: Grinding wheels for cutting-off on hand
held power tools
ISO 13849-1 2006 Safety of machinery – Safety related parts of EN ISO 13849-1 2008
control systems –
Part 1: General principles for design
ANSI B7.1 2000 Safety Requirements for the Use, Care and - -
Protection of Abrasive Wheels

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SIST EN 60745-2-3:2011
– 15 – EN 60745-2-3:2011
Annex ZZ
(informative)

Coverage of Essential Requirements of Directive 2006/42/EC
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and within its scope the standard covers all
relevant Essential Requirements as given in EC Directive 2006/42/EC (Machinery Directive).
Compliance with this standard provides one means of conformity with the specified essential
requirements of the Directives concerned.
WARNING: Other requirements and other EC Directives may be applicable to the products falling
within the scope of this standard.

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SIST EN 60745-2-3:2011
EN 60745-2-3:2011 – 16 –
Bibliography
Add the following note under IEC 60745-2-4:
NOTE 1  Harmonized as EN 60745-2-4.
Add the following note under IEC 60745-2-22:
1)
NOTE 2  Harmonized as EN 60745-2-22 .

1)
At draft stage.

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SIST EN 60745-2-3:2011
NORME CEI
INTERNATIONALE
IEC



60745-2-3
INTERNATIONAL


Deuxième édition
STANDARD

Second edition

2006-02


Outils électroportatifs à moteur –
Sécurité –
Partie 2-3:
Règles particulières pour les meuleuses,
lustreuses et ponceuses du type à disque

Hand-held motor-operated electric tools –
Safety –
Part 2-3:
Particular requirements for grinders,
polishers and disk-type sanders

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Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
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Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
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PRICE CODE
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International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

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SIST EN 60745-2-3:2011
60745-2-3  IEC:2006 – 3 –
CONTENTS
FOREWORD.7

1 Scope.13
2 Normative references .13
3 Definitions .13
4 General requirements .17
5 General conditions for the tests .19
6 Void.19
7 Classification.19
8 Marking and instructions.19
9 Protection against access to live parts.29
10 Starting .29
11 Input and current .29
12 Heating .29
13 Leakage current .29
14 Moisture resistance .29
15 Electric strength .29
16 Overload protection of transformers and associated circuits .31
17 Endurance.31
18 Abnormal operation .31
19 Mechanical hazards.31
20 Mechanical strength .39
21 Construction .43
22 Internal wiring.45
23 Components .45
24 Supply connection and external flexible cords .45
25 Terminals for external conductors.45
26 Provision for earthing .45
27 Screws and connections .45
28 Creepage distances, clearances and distances through insulation.45
29 Resistance to heat, fire and tracking.45
30 Resistance to rusting.47
31 Radiation, toxicity and similar hazards.47

Annexes .69
Annex K (normative) Battery tools and battery packs .69
Annex L (normative) Battery tools and battery packs provided with mains connection
or non-isolated sources.69
Annex AA (informative) Material and thickness of guards.69

Bibliography.71

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SIST EN 60745-2-3:2011
60745-2-3  IEC:2006 – 5 –

Figure 101 – Typical guard designs a) and b) for wheel Types 1, 41 and 42 .49
Figure 102 – Typical guard design with front lip for wheel Types 27, 28 and 29 .51
Figure 103 – Adjus
...