SIST EN ISO 11148-11:2012

SLOVENSKI STANDARD
SIST EN ISO 11148-11:2012
01-februar-2012
1DGRPHãþD
SIST EN 792-11:2000+A1:2008
1HHOHNWULþQDURþQDRURGMD9DUQRVWQH]DKWHYHGHO6HNDOQLNLLQãNDUMH,62

Hand-held non-electric power tools - Safety requirements - Part 11: Nibblers and shears
(ISO 11148-11:2011)
Handgehaltene nichtelektrisch betriebene Maschinen Sicherheitsanforderungen Teil 11:
Nibbler und Scheren (ISO 11148-11:2011)
Machines portatives à moteur non électrique - Exigences de sécurité - Partie 11:
Grignoteuses et cisailles (ISO 11148-11:2011)
Ta slovenski standard je istoveten z: EN ISO 11148-11:2011
ICS:
25.140.10 3QHYPDWLþQDRURGMD Pneumatic tools
SIST EN ISO 11148-11:2012 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 11148-11:2012

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SIST EN ISO 11148-11:2012


EUROPEAN STANDARD
EN ISO 11148-11

NORME EUROPÉENNE

EUROPÄISCHE NORM
December 2011
ICS 25.140.10 Supersedes EN 792-11:2000+A1:2008
English Version
Hand-held non-electric power tools - Safety requirements - Part
11: Nibblers and shears (ISO 11148-11:2011)
Machines portatives à moteur non électrique - Exigences Handgehaltene nicht elektrisch betriebene Maschinen -
de sécurité - Partie 11: Grignoteuses et cisailles (ISO Sicherheitsanforderungen - Teil 11: Nibbler und Scheren
11148-11:2011) (ISO 11148-11:2011)
This European Standard was approved by CEN on 12 November 2011.

CEN 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 CEN-CENELEC Management Centre or to any CEN 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 CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11148-11:2011: E
worldwide for CEN national Members.

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SIST EN ISO 11148-11:2012
EN ISO 11148-11:2011 (E)
Contents Page
Foreword .3
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC .4

2

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SIST EN ISO 11148-11:2012
EN ISO 11148-11:2011 (E)
Foreword
This document (EN ISO 11148-11:2011) has been prepared by Technical Committee ISO/TC 118
"Compressors and pneumatic tools, machines and equipment" in collaboration with Technical Committee
CEN/TC 255 “Hand-held, non-electric power tools - Safety” the secretariat of which is held by SIS.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by June 2012, and conflicting national standards shall be withdrawn at
the latest by June 2012.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 792-11:2000+A1:2008.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive.
For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 11148-11:2011 has been approved by CEN as a EN ISO 11148-11:2011 without any
modification.
3

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SIST EN ISO 11148-11:2012
EN ISO 11148-11:2011 (E)
Annex ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC
This European Standard has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association to provide a means of conforming to Essential Requirements of the
New Approach Directive 2006/42/EC on machinery.
Once this standard is cited in the Official Journal of the European Union under that Directive and has been
implemented as a national standard in at least one Member State, compliance with the clauses of this
standard confers, within the limits of the scope of this standard, a presumption of conformity with the
corresponding Essential Requirements of that Directive except ER 1.5.7 and associated EFTA regulations.
WARNING — Other requirements and other EU Directives may be applicable to the product(s) falling
within the scope of this standard.


4

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SIST EN ISO 11148-11:2012

INTERNATIONAL ISO
STANDARD 11148-11
First edition
2011-12-01

Hand-held non-electric power tools —
Safety requirements —
Part 11:
Nibblers and shears
Machines portatives à moteur non électrique — Exigences de
sécurité —
Partie 11: Grignoteuses et cisailles




Reference number
ISO 11148-11:2011(E)
©
ISO 2011

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SIST EN ISO 11148-11:2012
ISO 11148-11:2011(E)

COPYRIGHT PROTECTED DOCUMENT


©  ISO 2011
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 ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56  CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland

ii © ISO 2011 – All rights reserved

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SIST EN ISO 11148-11:2012
ISO 11148-11:2011(E)
Contents Page
Foreword . iv
Introduction . v
1  Scope . 1
2  Normative references . 1
3  Terms and definitions . 2
3.1  General definitions . 2
3.2  Definitions related to nibblers and shears. 4
4  Safety requirements and/or protective measures . 4
4.1  General . 4
4.2  Mechanical safety . 4
4.3  Thermal safety . 5
4.4  Noise reduction . 5
4.5  Vibration . 5
4.6  Materials and substances processed, used or exhausted . 6
4.7  Ergonomics . 6
4.8  Controls . 7
5  Verification . 7
5.1  General conditions for tests . 7
5.2  Noise . 7
5.3  Vibration . 8
5.4  Unintentional start . 8
5.5  Power tool construction . 8
5.6  Structure of verification . 8
6  Information for use . 9
6.1  Marking, signs and written warnings . 9
6.2  Instruction handbook . 9
6.3  Operating instructions . 14
6.4  Data . 14
6.5  Maintenance instructions . 15
Annex A (informative) List of significant hazards . 16
Annex B (informative) Examples of nibblers and shears covered by this part of ISO 11148 . 17
Annex C (normative) Symbols for labels and signs . 18
Bibliography . 19
© ISO 2011 – All rights reserved iii

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SIST EN ISO 11148-11:2012
ISO 11148-11:2011(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 11148-11 was prepared by Technical Committee ISO/TC 118, Compressors and pneumatic tools,
machines and equipment, Subcommittee SC 3, Pneumatic tools and machines.
ISO 11148 consists of the following parts, under the general title Hand-held non-electric power tools — Safety
requirements:
 Part 1: Assembly power tools for non-threaded mechanical fasteners
 Part 2: Cutting-off and crimping power tools
 Part 3: Drills and tappers
 Part 4: Non-rotary percussive power tools
 Part 5: Rotary percussive drills
 Part 6: Assembly power tools for threaded fasteners
 Part 7: Grinders
 Part 8: Sanders and polishers
 Part 9: Die grinders
 Part 10: Compression power tools
 Part 11: Nibblers and shears
 Part 12: Circular, oscillating and reciprocating saws
A part 13, dealing with fastener driving tools, is under preparation.
iv © ISO 2011 – All rights reserved

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SIST EN ISO 11148-11:2012
ISO 11148-11:2011(E)
Introduction
This document is a type-C standard as stated in ISO 12100.
The machinery concerned and the extent to which hazards, hazardous situations and events are covered are
defined in the Scope of this part of ISO 11148.
When requirements of this type-C standard are different from those which are stated in type-A or -B standards,
the requirements of this type-C standard take precedence over the requirements of other standards, for
machines that have been designed and built according to the requirements of this type-C standard.
ISO 11148 consists of a number of independent parts for individual types of hand-held non-electric power
tools.
Certain parts of ISO 11148 cover hand-held non-electric power tools driven by internal combustion engines
powered by gaseous or liquid fuel. In these parts, the safety aspects relating to internal combustion engines
are found in a normative annex.
The parts are type-C standards and refer to pertinent standards of type A and B where such standards are
applicable.

© ISO 2011 – All rights reserved v

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SIST EN ISO 11148-11:2012

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SIST EN ISO 11148-11:2012
INTERNATIONAL STANDARD ISO 11148-11:2011(E)

Hand-held non-electric power tools — Safety requirements —
Part 11:
Nibblers and shears
IMPORTANT — The colours represented in the electronic file of this document can be neither viewed
on screen nor printed as true representations. For the purposes of colour matching, see ISO 3864-4,
which provides colorimetric and photometric properties together with, as a guideline, references from
colour order systems.
1 Scope
This part of ISO 11148 specifies safety requirements for hand-held non-electric power tools (hereinafter
“nibblers and shears”) with a reciprocating movement for nibbling and shearing. The nibblers and shears can
be powered by compressed air or hydraulic fluid and are intended to be used by one operator and supported
by the operator's hand or hands, with or without a suspension, e.g. a balancer.
NOTE 1 At the time of publication, no nibblers and shears driven by internal combustion engines are known. Once
these are identified, it is intended to amend this part of ISO 11148 to include such power tools.
This part of ISO 11148 is applicable to:
 nibblers;
 shears.
NOTE 2 For examples of nibblers and shears, see Annex B.
This part of ISO 11148 is not applicable to special requirements and modifications of nibblers and shears for
the purpose of mounting them in a fixture.
This part of ISO 11148 deals with all significant hazards, hazardous situations or hazardous events relevant to
nibblers and shears when they are used as intended and under conditions of misuse which are reasonably
foreseeable by the manufacturer, with the exception of the use of nibblers and shears in potentially explosive
atmospheres.
NOTE 3 EN 13463-1 gives requirements for non-electrical equipment for potentially explosive atmospheres.
2 Normative references
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.
ISO 3857-3, Compressors, pneumatic tools and machines — Vocabulary — Part 3: Pneumatic tools and
machines
ISO 5391, Pneumatic tools and machines — Vocabulary
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SIST EN ISO 11148-11:2012
ISO 11148-11:2011(E)
ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction
ISO 13732-1, Ergonomics of the thermal environment — Methods for the assessment of human responses to
contact with surfaces — Part 1: Hot surfaces
ISO 13732-3, Ergonomics of the thermal environment — Methods for the assessment of human responses to
contact with surfaces — Part 3: Cold surfaces
ISO 13851, Safety of machinery — Two-hand control devices — Functional aspects and design principles
ISO 15744, Hand-held non-electric power tools — Noise measurement code — Engineering method (grade 2)
ISO 17066, Hydraulic tools — Vocabulary
ISO 28927-7, Hand-held portable power tools — Test methods for evaluation of vibration emission — Part 7:
Nibblers and shears
EN 12096, Mechanical vibration — Declaration and verification of vibration emission values
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 3857-3, ISO 5391, ISO 12100 and
ISO 17066 (for hydraulic tools) and the following apply.
3.1 General definitions
3.1.1
hand-held power tool
machine operated by one or two hands and driven by rotary or linear motors powered by compressed air,
hydraulic fluid, gaseous or liquid fuel, electricity or stored energy (e.g. by a spring) to do mechanical work and
so designed that the motor and the mechanism form an assembly that can easily be brought to its place of
operation
NOTE Hand-held power tools driven by compressed air or gas are called pneumatic tools (or air tools). Hand-held
power tools driven by hydraulic liquid are called hydraulic tools.
3.1.2
inserted tool
tool inserted in the nibbler or shear to perform the intended work
3.1.3
service tool
tool intended for performing maintenance or service on the nibbler or shear
3.1.4
control device
device to start and stop the nibbler or shear or to change the direction of the rotation or to control the
functional characteristics, such as speed and power
3.1.5
start-and-stop device
throttle
manually operated control on the nibbler or shear by which the energy supply to the motor can be turned on
and off
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SIST EN ISO 11148-11:2012
ISO 11148-11:2011(E)
3.1.6
hold-to-run start-and-stop device
constant pressure throttle
start-and-stop device which automatically returns to the OFF position when force on the start-and-stop device
actuator is released
3.1.7
lock-on start-and-stop device
constant pressure throttle with instant release lock
hold-to-run start-and-stop device that can be locked in the ON position and which is designed so that it
permits the nibbler or shear to be turned off by a single motion of the same finger or fingers used to turn it on
3.1.8
lock-off start-and-stop device
lock-off throttle
start-and-stop device that automatically latches in the OFF position when the actuator is released and where
two motions are required to energize the nibbler or shear
3.1.9
positive on-off start-and-stop device
positive on-off throttle
start-and-stop device that remains in the ON position until it is manually changed
3.1.10
maximum operating pressure
maximum pressure at which a nibbler or shear may be operated
3.1.11
whip hose
air hose connecting the main air hose with an air tool for the purpose of providing more flexibility
3.1.12
rated air pressure
air pressure, required at an air tool inlet port to ensure rated performance of the tool, also considered the
maximum pressure at which the tool may be operated
3.1.13 Rated speed
3.1.13.1
rated speed
pneumatic tool speed of an air tool at no load and rated air pressure at the tool inlet port
NOTE The rated speed is expressed in revolutions per minute.
3.1.13.2
rated speed
hydraulic tool nominal speed of a hydraulic tool at no load and rated flow at the tool inlet port
NOTE The rated speed is expressed in revolutions per minute.
3.1.14
maximum attainable speed
maximum speed which the tool can achieve under the most adverse condition of possible maladjustment or
malfunction of its speed control devices, when supplied with compressed air at the pressure marked on the
nibbler or shear
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SIST EN ISO 11148-11:2012
ISO 11148-11:2011(E)
3.1.15
suspension device
device, which is attached to the tool, whose primary purpose is to reduce the strain on the operator caused by
the weight of the tool
NOTE The device can also have a secondary purpose of transmitting a reaction torque.
3.2 Definitions related to nibblers and shears
3.2.1
nibbler
power tool for cutting sheet metal where material removal is caused by a reciprocating motion of a punch
through a fixed die
3.2.2
shear
power tool with a cutter acting in reciprocating motion relative to a fixed cutter, used for cutting sheet metal by
shearing action
4 Safety requirements and/or protective measures
4.1 General
The machine shall comply with the safety requirements and/or protective measures and be verified in
accordance with Clause 5. In addition, the machine shall be designed in accordance with the principles of
ISO 12100 for relevant, but not necessarily significant, hazards, which are not dealt with by this part of
ISO 11148.
The measures adopted to comply with the requirements of Clause 4 shall take account of the state-of-the-art.
It is recognized that optimizing the design with respect to some safety measures can result in a degradation of
performance against other safety requirements. In such cases, it is required to strike a balance between the
various requirements in order to achieve a nibbler or shear design that satisfies each requirement, so far as is
reasonably practicable, and remains fit for purpose.
4.2 Mechanical safety
4.2.1 Surfaces, edges and corners
Accessible parts of nibblers and shears, except the inserted tool, shall not have sharp edges or angles or
rough or abrasive surfaces; see ISO 12100:2010, 6.2.2.1.
4.2.2 Supporting surface and stability
Nibblers and shears shall be so designed that they can be laid aside and remain in a stable position on a
plane surface.
4.2.3 Hydraulic fluid ejection
Hydraulic systems of the nibblers and shears shall be enclosed so as to provide protection from high-pressure
fluid ejection.
4.2.4 Power tool construction
The nibbler or shear shall be so designed and constructed as to prevent the loosening or loss of components
during expected use, including rough handling and occasional dropping, which can compromise its safety
functions. Verification shall be carried out in accordance with 5.5.
4 © ISO 2011 – All rights reserved

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SIST EN ISO 11148-11:2012
ISO 11148-11:2011(E)
4.3 Thermal safety
Surface temperatures of parts of the nibbler or shear which are held during use or which can be inadvertently
touched shall follow the provisions of ISO 13732-1 and ISO 13732-3.
Pneumatic tools shall be designed to minimize the cooling effects of exhaust air on the handles and other
gripping zones.
4.4 Noise reduction
The nibbler or shear shall be designed and constructed so that the emission of noise is reduced to the lowest
practical level, taking account of technical progress and the availability of means of reducing noise, in
particular at source. Principles for designing nibblers and shears with reduced noise emission are contained in
ISO/TR 11688-1 and ISO/TR 11688-2.
The noise emission from using nibblers and shears has three main sources:
 the nibbler or shear itself;
 the inserted tool;
 the workpiece.
NOTE Generally, the noise emitted due to the characteristics of the workpiece cannot be controlled directly by the
manufacturer of the nibbler or shear.
Typical sources of noise emitted by the nibbler or shear itself are
a) the motor and drive mechanism,
b) the exhaust air or gases, and
c) vibration or impact-induced noise.
Where the exhaust air or gases are the major contributor to the noise, means to reduce the noise, for example
a silencer or equivalent means, shall be included in the design.
Alternatively, where practicable, the exhaust air or gases may be piped away from the operator in a hose.
Vibration-induced noise can often be reduced by vibration isolation and damping.
This list is not exhaustive; where alternative technical measures for noise reduction, with greater efficiency,
are available, they should be used by the manufacturer.
4.5 Vibration
The nibbler or shear shall be designed and constructed so that the vibration is reduced to the lowest level at
the handles and at any other parts of the tool in contact with the operator's hands, taking account of technical
progress and the availability of means of reducing vibration, in particular at source. Principles for designing
nibblers and shears with reduced vibration emission are contained in CR 1030-1.
Typical sources of vibration emitted by a nibbler or shear are
 impacts,
 poorly designed motors, and
 resonances in the structure of the machine, particularly the handles and their mounts.
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SIST EN ISO 11148-11:2012
ISO 11148-11:2011(E)
The following design features have been found to be effective and should be considered by manufacturers
when designing nibblers or shears:
a) reaction masses and springs;
b) increasing inertia;
c) isolated casing or handles.
This list is not exhaustive; where alternative technical measures for vibration reduction, with greater efficiency,
are available, they should be used by the manufacturer.
4.6 Materials and substances processed, used or exhausted
4.6.1 Exhaust air or gas
Nibblers and shears driven with compressed air or gas shall be designed in such a way that exhaust air or
gases are directed so as not to cause a hazard to the operator and so that any other effects, such as blowing
the dust and reflected air or gas from the workpiece on to the operator, are minimized.
4.6.2 Lubricants
When specifying lubricants, the manufacturer shall take environmental and occupational health aspects into
account.
4.6.3 Dust and fumes
So far as is reasonably practicable, the nibbler or shear shall be designed to facilitate the collection and
removal or suppression of airborne dust particles and fumes generated by the work process. The user
instructions shall include sufficient information to enable adequate control of the risks from dust and fumes.
4.7 Ergonomics
4.7.1 Design of the handle
Gripping areas of the nibblers and shears shall be designed to provide convenient, effective means for the
operator to exercise full control over the nibbler or shear.
Handles and other parts used for gripping the nibbler or shear shall be designed to ensure that the operator is
able to grip the nibbler or shear correctly and to perform the expected work. Handles shall suit the functional
anatomy of the hand and the dimensions of the hands of the operator population.
NOTE Further guidance on ergonomic design principles can be found in EN 614-1.
Nibblers and shears having
...