EN 60745-2-3:2007

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

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 with a rated capacity not exceeding 230 mm. Does not apply to random-orbit polishers and random-orbit sanders. These are covered by IEC 60745-2-4.

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• Status: Withdrawn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: 15-Mar-2007
• Withdrawal Date: 30-Nov-2009
• ICS: 25.140.20 - Electric tools
• Technical Committee: CLC/TC 116 - Safety of hand-held motor-operated electric tools
• Drafting Committee: IEC/TC 116 - Safety of hand-held motor-operated electric tools
• Parallel Committee: IEC/SC 61F - IEC_SC_61F --> TC 116
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 01-Feb-2014
• Completion Date: 01-Feb-2014
• Directive: 98/37/EC - Machinery
• Ref Project: 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

Relations

• Replaces: 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: 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: EN 50144-2-3:2002/A1:2002 - 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
• Replaced By: EN 60745-2-3:2011 - Hand-held motor-operated electric tools - Safety - Part 2-3: Particular requirements for grinders, polishers and disk-type sanders
• Effective Date: 29-Jan-2023
• Amended By: EN 60745-2-3:2007/A11:2009 - Hand-held motor-operated electric tools - Safety - Part 2-3: Particular requirements for grinders, polishers and disk-type sanders
• Effective Date: 07-Jun-2022

Standards Content (Sample)

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

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
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.

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

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.

– 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°).
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,
...