IEC 62841-3-4:2016
(Main)Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 3-4: Particular requirements for transportable bench grinders
Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 3-4: Particular requirements for transportable bench grinders
IEC 62841-3-4:2016 applies to transportable bench grinders that can be equipped with one or two accessories as follows:
- type 1 grinding wheels in accordance with ISO 603-4:1999 with a diameter not exceeding 310 mm and a thickness not exceeding 55 mm;
- wire brushes with a diameter not exceeding 310 mm and a thickness not exceeding 55 mm;
- polishing wheels with a diameter not exceeding 310 mm and with a peripheral speed of any accessory between 10 m/s and 50 m/s. The attention of National Committees is drawn to the fact that equipment manufacturers and testing organizations may need a transitional period following publication of a new, amended or revised IEC publication in which to make products in accordance with the new requirements and to equip themselves for conducting new or revised tests. It is the recommendation of the committee that the content of this publication be adopted for implementation nationally not earlier than 36 months from the date of publication Keywords: Bench Grinder, Hand-held tool, Transportable tool
This publication is to be read in conjunction with IEC 62841-1:2014. The contents of the corrigendum of December 2016 have been included in this copy.
Outils électroportatifs à moteur, outils portables et machines pour jardins et pelouses - Sécurité - Partie 3-4: Exigences particulières pour les tourets à meuler transportables
IEC 62841-3-4:2016 applies to transportable bench grinders that can be equipped with one or two accessories as follows:
- type 1 grinding wheels in accordance with ISO 603-4:1999 with a diameter not exceeding 310 mm and a thickness not exceeding 55 mm;
- wire brushes with a diameter not exceeding 310 mm and a thickness not exceeding 55 mm;
- polishing wheels with a diameter not exceeding 310 mm and with a peripheral speed of any accessory between 10 m/s and 50 m/s. The attention of National Committees is drawn to the fact that equipment manufacturers and testing organizations may need a transitional period following publication of a new, amended or revised IEC publication in which to make products in accordance with the new requirements and to equip themselves for conducting new or revised tests. It is the recommendation of the committee that the content of this publication be adopted for implementation nationally not earlier than 36 months from the date of publication Keywords: Bench Grinder, Hand-held tool, Transportable tool
This publication is to be read in conjunction with IEC 62841-1:2014. Le contenu du corrigendum de décembre 2016 a été pris en considération dans cet exemplaire.
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+AMD2:2024 CSV/COR1:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
IEC 62841-3-4 IEC 62841-3-4
Edition 1.2 2024-02 Édition 1.2 2024-02
ELECTRIC MOTOR-OPERATED HAND-HELD OUTILS ÉLECTROPORTATIFS À MOTEUR,
TOOLS, TRANSPORTABLE TOOLS AND LAWN OUTILS PORTABLES ET MACHINES POUR
AND GARDEN MACHINERY – SAFETY – JARDINS ET PELOUSES – SÉCURITÉ –
Part 3-4: Particular requirements for Partie 3-4: Exigences particulières
transportable bench grinders pour les tourets à meuler transportables
CO RRI G E NDUM 1
Corrections to the French version appear after the English text.
Les corrections à la version française sont données après le texte anglais.
Replace the entire 19.1 below, including 19.101, 19.1.102 and 19.1.103 and modified by
Amendment 2
19.1 Replacement of the first paragraph:
Moving and dangerous parts other than the accessories shall be so positioned or enclosed to
provide adequate protection against personal injury. The guarding of accessories is covered
in 19.1.101 through 19.1.103.
For grinding wheels and wire brushes, a guard in accordance with 19.1.101 and 19.1.102, a
work rest in accordance with 19.102 and a transparent screen in accordance with 19.1.103
shall be provided.
For polishing wheels, a guard, a work rest and a transparent screen are not required.
Guards for accessories shall not be removable without the aid of a tool.
19.1.101 Guards
The guard shall cover the periphery and the sides of the accessory, flanges and the end of
the tool spindle, except a portion of the accessory as allowed in 19.1.102 and indicated in
Figure 102.
The guard shall be designed so that the tool spindle cannot be fitted with an accessory
greater than 1,07 times the maximum diameter marked on the tool.
– 2 – IEC 62841-3-4:2016+AMD1:2019
+AMD2:2024 CSV/COR1:2024 © IEC 2024
The guard shall be constructed so that removal of the peripheral protecting member is not
necessary for replacement of the accessory.
Compliance is checked by inspection and by measurement.
19.1.102 Openings in the guard
For grinding wheels and for wire brushes, the opening angle in the guard shall not exceed 65°
above the horizontal plane passing through the centre of the wheel. The total opening angle
shall not exceed 90°. See Figure 102.
Compliance is checked by inspection and by measurement.
19.1.103 Transparent screens
Transparent screens shall be adjustable and have the minimum dimensions as specified in
Figure 103.
The operation of adjusting the screen shall not modify the adjustment of other parts of the
bench grinder.
The screen shall be made of transparent material having an appropriate resistance against
shattering, such as polycarbonate or laminated glass which is held in place by an interlayer,
between its two or more layers of glass.
For all bench grinders, the screens shall be mounted in such a way that the symmetrical axis
of the screen coincides with the vertical median plane of the working part of the grinding wheel
or the wire brush.
Compliance is checked by inspection.
19.1 Replacement of the first paragraph:
Moving and dangerous parts other than the accessories shall be so positioned or enclosed to
provide adequate protection against personal injury. The guarding of accessories is covered
in 19.1.101 through 19.1.104.
For grinding wheels, a wheel guard in accordance with 19.1.101 and 19.1.102, a work rest in
accordance with 19.102 and a transparent screen in accordance with 19.1.103 shall be
provided.
For wire brushes, a brush guard in accordance with 19.1.104 and a transparent screen in
accordance with 19.1.103 shall be provided. For brush guards where the angle α as shown in
Figure 107 is < 90°, a work rest in accordance with 19.102 is required.
For polishing wheels, a guard, a work rest and a transparent screen are not required.
Wheel guards and brush guards
– shall be designed so that the tool spindle cannot be fitted with an accessory greater than
1,07 times the maximum diameter marked on the bench grinder; and
– shall not be removable without the aid of a tool.
19.1.101 Guards
Replace the existing title and text with the following:
+AMD2:2024 CSV/COR1:2024 © IEC 2024
19.1.101 Wheel guards
Wheel guards shall cover the periphery and the sides of the accessory, flanges and the end
of the tool spindle, except a portion of the accessory as allowed in 19.1.102 and indicated in
Figure 102.
The wheel guard shall be constructed so that removal of the peripheral protecting member is
not necessary for replacement of the accessory.
Compliance is checked by inspection and by measurement.
19.1.102 Openings in the guard
Replace the existing title and text with the following:
19.1.102 Openings in the wheel guard
The opening angle in a wheel guard shall not exceed 65° above the horizontal plane passing
through the centre of the wheel. The total opening angle shall not exceed 90°. See Figure 102.
Compliance is checked by inspection and by measurement.
19.1.104 Brush guards
Brush guards shall cover an area of ≥ 180° of the periphery of the wire brush. The opening
angle shall not exceed 65° above the horizontal plane passing through the centre of the wire
brush. The width of the brush guard shall at least cover the length of the tool spindle. The
brush guard may be open laterally, see Figure 107.
Compliance is checked by inspection and measurement.
with the following:
19.1 Replacement of the first paragraph:
Moving and dangerous parts other than the accessories shall be so positioned or enclosed to
provide adequate protection against personal injury. The guarding of accessories is covered
in 19.1.101 through 19.1.103104.
For grinding wheels and wire brushes, a wheel guard in accordance with 19.1.101 and
19.1.102, a work rest in accordance with 19.102 and a transparent screen in accordance with
19.1.103 shall be provided.
For wire brushes, a brush guard in accordance with 19.1.104 and a transparent screen in
accordance with 19.1.103 shall be provided. For brush guards where the angle α as shown in
Figure 107 is < 90°, a work rest in accordance with 19.102 is required.
For polishing wheels, a guard, a work rest and a transparent screen are not required.
Guards for accessories shall not be removable without the aid of a tool.
Wheel guards and brush guards
– 4 – IEC 62841-3-4:2016+AMD1:2019
+AMD2:2024 CSV/COR1:2024 © IEC 2024
– shall be designed so that the tool spindle cannot be fitted with an accessory greater than
1,07 times the maximum diameter marked on the bench grinder; and
– shall not be removable without the aid of a tool.
19.1.101 Wheel guards
Wheel guards shall cover the periphery and the sides of the accessory, flanges and the end
of the tool spindle, except a portion of the accessory as allowed in 19.1.102 and indicated in
Figure 102.
The guard shall be designed so that the tool spindle cannot be fitted with an accessory
greater than 1,07 times the maximum diameter marked on the tool.
The wheel guard shall be constructed so that removal of the peripheral protecting member is
not necessary for replacement of the accessory.
Compliance is checked by inspection and by measurement.
19.1.102 Openings in the wheel guard
For grinding wheels and for wire brushes, The opening angle in the a wheel guard shall not
exceed 65° above the horizontal plane passing through the centre of the wheel. The total
opening angle shall not exceed 90°. See Figure 102.
Compliance is checked by inspection and by measurement.
19.1.103 Transparent screens
Transparent screens shall be adjustable and have the minimum dimensions as specified in
Figure 103.
The operation of adjusting the screen shall not modify the adjustment of other parts of the
bench grinder.
The screen shall be made of transparent material having an appropriate resistance against
shattering, such as polycarbonate or laminated glass which is held in place by an interlayer,
between its two or more layers of glass.
For all bench grinders, the screens shall be mounted in such a way that the symmetrical axis
of the screen coincides with the vertical median plane of the working part of the grinding wheel
or the wire brush.
Compliance is checked by inspection.
19.1.104 Brush guards
Brush guards shall cover an area of ≥ 180° of the periphery of the wire brush. The opening
angle shall not exceed 65° above the horizontal plane passing through the centre of the wire
brush. The width of the brush guard shall at least cover the length of the tool spindle. The
brush guard may be open laterally, see Figure 107.
Compliance is checked by inspection and measurement.
+AMD2:2024 CSV/COR1:2024 © IEC 2024
Corrections à la version française:
Remplacer l’alinea 19.1 ci-dessous, y compris 19.101, 19.1.102
...
IEC 62841-3-4 ®
Edition 1.0 2016-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 3-4: Particular requirements for transportable bench grinders
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 3-4: Exigences particulières pour les tourets à meuler transportables
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IEC 62841-3-4 ®
Edition 1.0 2016-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 3-4: Particular requirements for transportable bench grinders
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 3-4: Exigences particulières pour les tourets à meuler transportables
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.140.20 ISBN 978-2-8322-3204-0
– 2 – IEC 62841-3-4:2016 © IEC 2016
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references. 6
3 Terms and definitions . 6
4 General requirements . 7
5 General conditions for the tests . 7
6 Radiation, toxicity and similar hazards . 7
7 Classification . 7
8 Marking and instructions . 7
9 Protection against access to live parts . 9
10 Starting . 9
11 Input and current . 9
12 Heating . 9
13 Resistance to heat and fire . 9
14 Moisture resistance . 9
15 Resistance to rusting . 9
16 Overload protection of transformers and associated circuits . 9
17 Endurance . 10
18 Abnormal operation . 10
19 Mechanical hazards . 10
20 Mechanical strength . 14
21 Construction . 16
22 Internal wiring . 17
23 Components . 17
24 Supply connection and external flexible cables and cords . 17
25 Terminals for external conductors . 17
26 Provision for earthing . 17
27 Screws and connections . 17
28 Creepage distances, clearances and distances through insulation . 17
Annexes . 22
Annex I (informative) Measurement of noise and vibration emissions . 22
Bibliography . 23
Figure 101 – Bench grinder . 18
Figure 102 – Opening angles and dimensions for a guard . 19
Figure 103 – Transparent screen . 20
Figure 104 – Bench grinder with inclinable work rest . 20
Figure 105 – Flange dimensions . 21
Table 4 – Required performance levels . 10
Table 101 – Minimum flange dimensions (see Figure 105) . 13
Table 102 − Test torque for flanges . 13
Table 103 − Guard thickness for steel . 15
Table 104 − Guard thickness for aluminium . 15
Table 105 – Minimum tool spindle diameter . 16
Table I.101 – Operating conditions for bench grinders . 22
– 4 – IEC 62841-3-4:2016 © IEC 2016
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY –
SAFETY –
Part 3-4: Particular requirements for transportable bench grinders
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-
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transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and
...
IEC 62841-3-4 ®
Edition 1.1 2019-07
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 3-4: Particular requirements for transportable bench grinders
Outils électroportatifs à moteur, outils portables et machines pour jardins
et pelouses – Sécurité –
Partie 3-4: Exigences particulières pour les tourets à meuler transportables
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.
IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and
once a month by email. French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or CISPR.
need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.
A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.
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webstore.iec.ch/advsearchform Le premier dictionnaire d'électrotechnologie en ligne au
La recherche avancée permet de trouver des publications IEC monde, avec plus de 22 000 articles terminologiques en
en utilisant différents critères (numéro de référence, texte, anglais et en français, ainsi que les termes équivalents dans
comité d’études,…). Elle donne aussi des informations sur les 16 langues additionnelles. Egalement appelé Vocabulaire
projets et les publications remplacées ou retirées. Electrotechnique International (IEV) en ligne.
IEC Just Published - webstore.iec.ch/justpublished Glossaire IEC - std.iec.ch/glossary
Restez informé sur les nouvelles publications IEC. Just 67 000 entrées terminologiques électrotechniques, en anglais
Published détaille les nouvelles publications parues. et en français, extraites des articles Termes et Définitions des
Disponible en ligne et une fois par mois par email. publications IEC parues depuis 2002. Plus certaines entrées
antérieures extraites des publications des CE 37, 77, 86 et
Service Clients - webstore.iec.ch/csc CISPR de l'IEC.
Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
sales@iec.ch.
IEC 62841-3-4 ®
Edition 1.1 2019-07
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 3-4: Particular requirements for transportable bench grinders
Outils électroportatifs à moteur, outils portables et machines pour jardins
et pelouses – Sécurité –
Partie 3-4: Exigences particulières pour les tourets à meuler transportables
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.140.20 ISBN 978-2-8322-7132-2
IEC 62841-3-4 ®
Edition 1.1 2019-07
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 3-4: Particular requirements for transportable bench grinders
Outils électroportatifs à moteur, outils portables et machines pour jardins
et pelouses – Sécurité –
Partie 3-4: Exigences particulières pour les tourets à meuler transportables
– 2 – IEC 62841-3-4:2016+AMD1:2019 CSV
© IEC 2019
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 General requirements . 7
5 General conditions for the tests . 7
6 Radiation, toxicity and similar hazards . 7
7 Classification . 7
8 Marking and instructions . 7
9 Protection against access to live parts . 9
10 Starting . 9
11 Input and current . 9
12 Heating . 9
13 Resistance to heat and fire . 9
14 Moisture resistance . 9
15 Resistance to rusting . 9
16 Overload protection of transformers and associated circuits . 9
17 Endurance . 10
18 Abnormal operation . 10
19 Mechanical hazards . 10
20 Mechanical strength . 14
21 Construction . 16
22 Internal wiring . 17
23 Components . 17
24 Supply connection and external flexible cables and cords . 17
25 Terminals for external conductors . 17
26 Provision for earthing . 17
27 Screws and connections . 17
28 Creepage distances, clearances and distances through insulation . 17
Annexes . 22
Annex I (informative) Measurement of noise and vibration emissions . 22
Bibliography . 23
Figure 101 – Bench grinder . 18
Figure 102 – Opening angles and dimensions for a guard . 19
Figure 103 – Transparent screen . 20
Figure 104 – Bench grinder with inclinable work rest . 20
Figure 105 – Flange dimensions . 21
Figure 106 – Type 1 grinding wheel . 21
Table 4 – Required performance levels . 10
© IEC 2019
Table 101 – Minimum flange dimensions (see Figure 105) . 13
Table 102 − Test torque for flanges . 13
Table 103 − Guard thickness for steel . 15
Table 104 − Guard thickness for aluminium . 15
Table 105 – Minimum tool spindle diameter . 16
Table I.101 – Operating conditions for bench grinders . 22
– 4 – IEC 62841-3-4:2016+AMD1:2019 CSV
© IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY –
SAFETY –
Part 3-4: Particular requirements for transportable bench grinders
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
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...
IEC 62841-3-4 ®
Edition 1.2 2024-02
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 3-4: Particular requirements for transportable bench grinders
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 3-4: Exigences particulières pour les tourets à meuler transportables
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IEC 62841-3-4 ®
Edition 1.2 2024-02
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 3-4: Particular requirements for transportable bench grinders
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 3-4: Exigences particulières pour les tourets à meuler transportables
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.140.20 ISBN 978-2-8322-8376-9
IEC 62841-3-4 ®
Edition 1.2 2024-02
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 3-4: Particular requirements for transportable bench grinders
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 3-4: Exigences particulières pour les tourets à meuler transportables
– 2 – IEC 62841-3-4:2016+AMD1:2019
+AMD2:2024 CSV © IEC 2024
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 General requirements . 7
5 General conditions for the tests . 7
6 Radiation, toxicity and similar hazards . 7
7 Classification . 7
8 Marking and instructions . 7
9 Protection against access to live parts . 9
10 Starting . 9
11 Input and current . 9
12 Heating . 10
13 Resistance to heat and fire . 10
14 Moisture resistance . 10
15 Resistance to rusting . 10
16 Overload protection of transformers and associated circuits . 10
17 Endurance . 10
18 Abnormal operation . 10
19 Mechanical hazards . 11
20 Mechanical strength . 16
21 Construction . 18
22 Internal wiring . 18
23 Components . 18
24 Supply connection and external flexible cables and cords . 18
25 Terminals for external conductors . 18
26 Provision for earthing . 19
27 Screws and connections . 19
28 Creepage distances, clearances and distances through insulation . 19
Annexes . 24
Annex I (informative) Measurement of noise and vibration emissions . 24
Bibliography . 25
Figure 101 – Bench grinder . 19
Figure 102 – Opening angles and dimensions for a guard . 20
Figure 103 – Transparent screen . 21
Figure 104 – Bench grinder with inclinable work rest . 21
Figure 105 – Flange dimensions . 22
Figure 106 – Type 1 grinding wheel . 22
Figure 107 – Brush guard . 23
Table 4 – Required performance levels . 11
+AMD2:2024 CSV © IEC 2024
Table 101 – Minimum flange dimensions (see Figure 105) . 14
Table 102 − Test torque for flanges . 15
Table 103 − Guard thickness for steel . 16
Table 104 − Guard thickness for aluminium . 16
Table 105 – Minimum tool spindle diameter . 17
Table I.101 – Operating conditions for bench grinders . 24
– 4 – IEC 62841-3-4:2016+AMD1:2019
+AMD2:2024 CSV © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY –
SAFETY –
Part 3-4: Particular requirements for transportable bench grinders
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 wa
...
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