EN 60745-2-3:2011

SLOVENSKI STANDARD
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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
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.

– 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.

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.

– 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.
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.

– 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

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.
– 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.

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

– 11 – EN 60745-2-3:2011
Dimensions in millimetres
Figure Z102 – Artificial grinding wheel for angle grinding

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

– 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

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
– 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.

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.
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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For price, see current catalogue

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

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

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
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international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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equipment declared to be in conformity with an IEC Publication.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60745-2-3 has been prepared by subcommittee 61F: Safety of
hand-held motor-operated electric tools, of IEC technical committee 61: Safety of household
and similar electrical appliances.
This second edition cancels and replaces the first edition published in 1984 and its
amendment 1 (1995). It constitutes a technical revision. Main changes include Clause 8:
Markings and instructions, introducing detailed safety warnings, Clause 19: Mechanical
hazards, with requirements for flanges, spindles and guards and Clause 20: Mechanical
strength, with requirements and test for guards.

60745-2-3  IEC:2006 – 9 –
The text of this standard is based on the following documents:
FDIS Report on voting
61F/624/FDIS 61F/634/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This part 2 is to be used in conjunction with the latest edition of IEC 60745-1, Hand-held
motor-operated electric tools – Safety – Part 1: General requirements, and its amendments. It
was established on the basis of the third edition (2001) of that standard.
NOTE 1 When “Part 1” is mentioned in this standard, it refers to IEC 60745-1.
This part 2 supplements or modifies the corresponding clauses of IEC 60745-1, so as to
convert that publication into the IEC standard: Safety for grinders, polishers and disk-type
sanders.
When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies
as far as is reasonable. When this standard states “addition”, “modification” or “replacement”,
the relevant text in Part 1 is to be adapted accordingly.
NOTE 2 The following numbering system is used:
– subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1;
– additional annexes are lettered AA, BB, etc.
NOTE 3 In this standard, the following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
– notes: in smaller roman type.
Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the
associated noun are also in bold.
IEC 60745 consists of the following parts, under the general title Hand-held motor-operated
electric tools – Safety:
Part 1: General requirements
Part 2-1: Particular requirements for drills and impact drills
Part 2-2: Particular requirements for screwdrivers and impact wrenches
Part 2-3: Particular requirements for grinders, polishers and disk-type sanders
Part 2-4: Particular requirements for sanders and polishers other than disk type
Part 2-5: Particular requirements for circular saws and circular knives
Part 2-6: Particular requirements for hammers
Part 2-7: Particular requirements for spray guns for non-flammable liquids
Part 2-8: Particular requirements for shears and nibblers
Part 2-9: Particular requirements for tappers
Part 2-11: Particular requirements for reciprocating saws (jig and sabre saws)
Part 2-12: Particular requirements for concrete vibrators

60745-2-3  IEC:2006 – 11 –
Part 2-13: Particular requirements for chain saws
Part 2-14: Particular requirements for planers
Part 2-15: Particular requirements for hedge trimmers and grass shears
Part 2-16: Particular requirements for tackers
Part 2-17: Particular requirements for routers and trimmers
Part 2-18: Particular requirements for strapping tools
Part 2-19: Particular requirements for jointers
Part 2-20: Particular requirements for band saws
Part 2-21: Particular requirements for drain cleaners
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
60745-2-3  IEC:2006 – 13 –
HAND-HELD MOTOR-OPERATED ELECTRIC TOOLS –
SAFETY –
Part 2-3: Particular requirements for grinders,
polishers and disk-type sanders

1 Scope
This clause of Part 1 is applicable, except as follows:
1.1 Addition:
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.
This standard does not apply to random-orbit polishers and random-orbit sanders. These are
covered by IEC 60745-2-4.
2 Normative references
This clause of Part 1 is applicable except as follows:
Addition:
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
3 Definitions
This clause of Part 1 is applicable, except as follows:
3.101
blotter
thin piece of an easily compressible material, between the abrasive product and flange
3.102
disk-type sander
tool, constructed like a grinder, intended for sanding

60745-2-3  IEC:2006 – 15 –
3.102.1
angle disk-type sander
tool with the rotating spindle at a right angle to the motor shaft, intended for lateral sanding
3.102.2
straight disk-type sander
tool with the rotating spindle in-line with the motor shaft, intended for peripheral or lateral
sanding
3.102.3
vertical disk-type sander
tool with the rotating spindle in-line with the motor shaft, intended for lateral sanding
3.103
flange
collar, disc or plate between or against which wheels are mounted
3.103.1
unrecessed flange
flange fixed to the machine spindle having an unrecessed flat surface against which a
threaded hole abrasive product is screwed, e.g. a cup wheel, a cone or a plug
3.103.2
recessed flange
flange fixed to the machine spindle having a recessed flat surface
3.103.3
flange outside diameter
outside diameter of the contact surface of a flange
3.103.4
backing flange
contacts and provides support to the back side of the wheel and is located on the spindle
between wheel and tool
3.103.5
locking flange
supports the front side of the wheel and secures and clamps the wheel to the spindle and the
backing flange
3.104
grinder
tool driving a rotating spindle on which a bonded abrasive product is mounted
3.104.1
angle grinder
tool with the rotating spindle at a right angle to the motor shaft, intended for peripheral and
lateral grinding
3.104.2
straight grinder
tool with the rotating spindle in-line with the motor shaft, either equipped with an abrasive
wheel intended for peripheral grinding or equipped with a collet or chuck intended for use with
mounted wheels, points or burrs

60745-2-3  IEC:2006 – 17 –
3.104.3
vertical grinder
tool with the rotating spindle in-line with the motor shaft, intended for lateral grinding
3.105
mounted wheels
various shapes and sizes that may be either organic or inorganic bonded abrasives and are
mounted on a mandrel or threaded onto a mandrel
3.106
polisher
tool equipped with a rotating disk or pad intended for polishing
3.106.1
angle polisher
tool with the rotating spindle at a right angle to the motor shaft, intended for peripheral and
lateral polishing
3.106.2
straight polisher
tool with the rotating spindle in-line with the motor shaft, intended for peripheral polishing
3.106.3
vertical polisher
tool with the rotating spindle in-line with the motor shaft, intended for lateral polishing
3.107
rated capacity
maximum diameter of the rotating accessory to be fitted on the tool as recommended by the
manufacturer’s instruction
3.108
rated speed
maximum attainable speed, with any recommended accessory installed, at rated voltage or at
the upper limit of the rated voltage range designated by the manufacturer
3.109
wheel guard
device which partly encloses the abrasive wheel and gives protection to the operator
3.110
wheel types
wheels for different applications in accordance with ISO 603-12, ISO 603-14, ISO 603-16 or
ANSI B 7.1
3.111
minor fragment
particles less than 1/16 of the mass of the abrasive wheel
4 General requirements
This clause of Part 1 is applicable.

60745-2-3  IEC:2006 – 19 –
5 General conditions for the tests
This clause of Part 1 is applicable.
6 Void
7 Classification
This clause of Part 1 is applicable.
8 Marking and instructions
This clause of Part 1 is applicable, except as follows:
8.1 Addition:
Tools shall also be marked with:
– rated speed in revolutions per minute. Tools designed for operation at more than one
rated speed shall be marked with the rated speed for each of the speed settings in such a
way that it is clear which speed corresponds with each of the settings;
– rated capacity in mm;
– indication of direction of rotation of the spindle. This shall be indicated by an arrow, raised
or sunk, or by any other means no less visible and indelible;
– tools provided with a threaded spindle shall be marked with spindle thread size;
– “ WARNING Always wear eye protection” or the sign M004 of ISO 7010 .
8.6 Addition:
n……………………….rated speed
8.12.1 Addition:
For the following safety instructions specified in 8.12.1.101 to 8.12.1.107, the terms like
grinding/grinder, sanding/sander, wire brushing/wire brush, polishing/polisher or cutting-
off/cut-off tool, are selected as recommended by the manufacturer. These terms in the
warnings and headings must be consistently used or deleted based on the
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