SIST EN 60745-2-3:2007

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

This standard applies to grinders, with a rated speed not exceeding a peripheral speed of the accessory of 80 m/s at rated capacity, polishers and disk-type sanders, including angle, straight and vertical. This standard applies to tools with a rated capacity not exceeding 230 mm.

Handgeführte motorbetriebene Elektrowerkzeuge - Sicherheit -- Teil 2-3: Besondere Anforderungen für Schleifer, Polierer und Schleifer mit Schleifblatt

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

S'applique aux meuleuses dont la vitesse assignée ne dépasse pas une vitesse périphérique de l'accessoire de 80 m/s à la capacité assignée, aux lustreuses et aux ponceuses du type à disque, y compris d'angle, droites et verticales dont la capacité assignée ne dépasse pas 230 mm.  Cette norme ne s'applique pas aux lustreuses à orbite aléatoire et aux ponceuses à orbite aléatoire. Ces dernières sont couvertes par la CEI 60745-2-4.

Električna ročna orodja - Varnost - 2-3. del: Posebne zahteve za brusilnike, polirnike in diskovne peskalnike (IEC 60745-2-3:2006)

Ta standard velja za brusilnike z nazivno hitrostjo, ki ne presega obodne hitrosti dodatka 80 m/s pri nazivni moči, polirnike in diskovne peskalnike, vključno s kotnimi, ravnimi in navpičnimi. Ta standard velja za orodja z nazivno močjo, ki ne presega 230 mm.

General Information

• Status: Withdrawn
• Publication Date: 14-Oct-2007
• Withdrawal Date: 20-Jan-2014
• ICS: 25.080.50 - Grinding and polishing machines
• ICS: 25.140.20 - Electric tools
• Technical Committee: I09 - Imaginarni 09
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 17-Jan-2014
• Due Date: 09-Feb-2014
• Completion Date: 21-Jan-2014
• Directive: 98/37/EC - Machinery
• Ref Project: EN 60745-2-3:2007 - Hand-held motor-operated electric tools - Safety - Part 2-3: Particular requirements for grinders, polishers and disk-type sanders

Relations

• Replaces: SIST EN 50144-2-3:2002/A2:2003 - Safety of hand-held electric motor operated tools -- Part 2-3: Particular requirements for grinders, disk type sanders and polishers
• Effective Date: 01-Feb-2010
• Replaces: SIST EN 50144-2-3:2002/A1:2003 - Safety of hand-held electric motor operated tools -- Part 2-3: Particular requirements for grinders, disk type sanders and polishers
• Effective Date: 01-Feb-2010
• Replaced By: SIST EN 60745-2-3:2011 - 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)
• Effective Date: 29-Jan-2023
• Amended By: SIST EN 60745-2-3:2007/A11:2010 - Hand-held motor-operated electric tools - Safety -- Part 2-3: Particular requirements for grinders, polishers and disk-type sanders
• Effective Date: 07-Jun-2022
• Replaces: SIST EN 50144-2-3:2002 - Safety of hand-held electric motor operated tools -- Part 2-3: Particular requirements for grinders, disk type sanders and polishers
• Effective Date: 29-Jan-2023
• Replaces: SIST EN 50144-2-3:2002/A2:2003 - Safety of hand-held electric motor operated tools -- Part 2-3: Particular requirements for grinders, disk type sanders and polishers
• Effective Date: 29-Jan-2023
• Replaces: SIST EN 50144-2-3:2002/A1:2003 - Safety of hand-held electric motor operated tools -- Part 2-3: Particular requirements for grinders, disk type sanders and polishers
• Effective Date: 29-Jan-2023
• Replaces: SIST EN 50144-2-3:2002/A1:2003 - Safety of hand-held electric motor operated tools -- Part 2-3: Particular requirements for grinders, disk type sanders and polishers
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60745-2-3:2007
01-november-2007
1DGRPHãþD
SIST EN 50144-2-3:2002
SIST EN 50144-2-3:2002/A1:2003
SIST EN 50144-2-3:2002/A2:2003
(OHNWULþQDURþQDRURGMD9DUQRVWGHO3RVHEQH]DKWHYH]DEUXVLOQLNH
SROLUQLNHLQGLVNRYQHSHVNDOQLNH,(&
Hand-held motor-operated electric tools - Safety -- Part 2-3: Particular requirements for
grinders, polishers and disk-type sanders
Handgeführte motorbetriebene Elektrowerkzeuge - Sicherheit -- Teil 2-3: Besondere
Anforderungen für Schleifer, Polierer und Schleifer mit Schleifblatt
Outils électroportatifs à moteur - Sécurité -- Partie 2-3: Règles particulières pour les
meuleuses, lustreuses et ponceuses du type à disque
Ta slovenski standard je istoveten z: EN 60745-2-3:2007
ICS:
25.080.50 Brusilni in polirni stroji Grinding and polishing
machines
25.140.20 (OHNWULþQDRURGMD Electric tools
SIST EN 60745-2-3:2007 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

EUROPEAN STANDARD
EN 60745-2-3

NORME EUROPÉENNE
March 2007
EUROPÄISCHE NORM

ICS 25.140.20 Supersedes EN 50144-2-3:2002 + A1:2002 + A2:2003


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)


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




This European Standard was approved by CENELEC on 2006-12-01. 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, 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

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60745-2-3:2007 E

---------------------- Page: 2 ----------------------

EN 60745-2-3:2007 – 2 –
Foreword
The text of the International Standard IEC 60745-2-3:2006, prepared by SC 61F, Safety of
hand-held motor-operated electric tools, of IEC TC 61, Safety of household and similar electrical
appliances, together with the common modifications prepared by the Technical Committee
CENELEC TC 61F, Safety of hand-held and transportable motor-operated electric tools, was
submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 60745-2-3
on 2006-12-01.
This European Standard supersedes EN 50144-2-3:2002 + A1:2002 + A2:2003.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2007-12-01

– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2009-12-01
This 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 a mandate given to CENELEC by the
European Commission and the European Free Trade Association and covers essential
requirements of EC Directive 98/37/EC (Machinery Directive), amended by Directive 98/79/EC.
See Annex ZZ.
Compliance with the clauses of Part 1 together with this Part 2 provides one means of conforming
with the essential health and safety requirements of the Directive concerned.
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).
Warning: Other requirements and other EC Directives can be applicable to the products falling
within the scope of this standard.
This 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 60745-1:2006. When this standard states
"addition", "modification" or "replacement", the relevant text in Part 1 is to be adapted accordingly.
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 are
prefixed “Z”.
Annexes ZA and ZZ have been added by CENELEC.

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– 3 – EN 60745-2-3:2007
NOTE In this standard the following print types are used:
- Requirements proper;
- Test specifications;
- Explanatory matter.

---------------------- Page: 4 ----------------------

EN 60745-2-3:2007 – 4 –
Endorsement notice
The text of the International Standard IEC 60745-2-3:2006 was approved by CENELEC as a
European Standard with agreed common modifications as given below.
COMMON MODIFICATIONS
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.
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.

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– 5 – EN 60745-2-3:2007
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.


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
50 ± 0,2 10,0 6 ± 0,05 35 ± 0,02 8,1 14,5
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
300 ± 0,2 22,23 6 ± 0,05 270 ± 0,02 17,4 520

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EN 60745-2-3:2007 – 6 –
Table Z103 – Feed force
ø a
50 80 100 115 125 150 180 200 230 300
mm
Feed force
15 15 40 40 40 40 60 60 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.
For grinders with a rated capacity up to or equal 55 mm, the test shall be
carried out under load by using the artificial wheel.
For grinders with a rated capacity exceeding 55 mm diameter, the test
shall be carried out under load by using the artificial wheel, but at the
speed achieved at under normal load (for example by reducing the
supply voltage).
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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– 7 – EN 60745-2-3:2007
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. 200 mm x 200 mm x 20 mm
mounted on a bench
Tool bit Polishing pad
Feed force 50 N ± 5 N (in addition to the weight of the tool) 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. 200 mm x 200 mm x 20 mm
mounted on a bench
Tool bit Recommended sanding disc for steel with a grain size of 180
Feed force 30 N ± 5 N (in addition to the weight of the tool)
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

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°).

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EN 60745-2-3:2007 – 8 –
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 emission value
Addition:
For the following applications of the tool, if recommended in the instruction manual, the vibration
emission values 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.
21 Construction
21.Z1 Addition:
Disc-type sanders exclusively for sanding wooden floors are considered to be tools where a
considerable amount of dust is produced.
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

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– 9 – EN 60745-2-3:2007
- 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.
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.
Bibliography
Add the following note under IEC 60745-2-4:
NOTE Harmonized as EN 60745-2-4:2003 (not modified).

---------------------- Page: 10 ----------------------

EN 60745-2-3:2007 – 10 –
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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– 11 – EN 60745-2-3:2007

Dimensions in milimetres
Figure Z102 – Artificial grinding wheel for angle grinding

---------------------- Page: 12 ----------------------

EN 60745-2-3:2007 – 12 –

Dimensions in milimetres
Figure Z103 – Artificial grinding wheel for straight grinding

---------------------- Page: 13 ----------------------

– 13 – EN 60745-2-3:2007

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

---------------------- Page: 14 ----------------------

EN 60745-2-3:2007 – 14 –
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

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
ANSI B7.1 2000 Safety Requirements for the Use, Care and - -
Protection of Abrasive Wheels

---------------------- Page: 15 ----------------------

– 15 – EN 60745-2-3:2007
Annex ZZ
(informative)

Coverage of Essential Requirements of EC Directives
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 Annex I of EC Directive 98/37/EC
(Machinery Directive), amended by Directive 98/79/EC.
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.

---------------------- Page: 16 ----------------------

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: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
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МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

---------------------- Page: 17 ----------------------

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

---------------------- Page: 18 ----------------------

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 – Adjustable guard for cup wheel Types 6 and 11 .53
Figure 104 – Principal dimensions of flanges .55
Figure 105 – Dimensions of an adaptor backing flange .55
Figure 106 – Guard strength test: explanation of guard positions.59
Figure 107 – Guard strength test: preparation of the grinder .61
Figure 108 – Guard strength test: preparation of cup wheel Types 6 and 11 .61
Figure 109 – Guard strength test: straight grinder with additional masses.63
Figure 110 – Guard strength test box.67

Table 101 – Torques for testing flanges .37
Table 102 – Typical pre-cut length ranges for standard wheel dimensions .41

---------------------- Page: 19 ----------------------

60745-2-3  IEC:2006 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

HAND-HELD MOTOR-OPERATED ELECTRIC TOOLS –
SAFETY –

Part 2-3: Particular requirements for grinders,
polishers and disk-type sanders


FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpre
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