SIST EN ISO 20643:2008

SLOVENSKI STANDARD
SIST EN ISO 20643:2008
01-september-2008
1DGRPHãþD
SIST EN ISO 20643:2005
0HKDQVNHYLEUDFLMH3UHQRVQLURþQLLQURþQRYRGHQLVWURML1DþHODYUHGQRWHQMD
RGGDMDQMDYLEUDFLM,62
Mechanical vibration - Hand-held and hand-guided machinery - Principles for evaluation
of vibration emission (ISO 20643:2005)
Mechanische Schwingungen - Handgehaltene und handgeführte Maschinen -
Grundsätzliches Vorgehen bei der Ermittlung der Schwingungsemission (ISO
20643:2005)
Vibration mécanique - Machines tenues et guidées à la main - Principes pour l'évaluation
d'émission de vibration (ISO 20643:2005)
Ta slovenski standard je istoveten z: EN ISO 20643:2008
ICS:
13.160 Vpliv vibracij in udarcev na Vibration and shock with
ljudi respect to human beings
25.140.01 5RþQDRURGMDQDVSORãQR Hand-held tools in general
SIST EN ISO 20643:2008 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 20643:2008

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SIST EN ISO 20643:2008
EUROPEAN STANDARD
EN ISO 20643
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2008
ICS 25.140.01; 13.160 Supersedes EN ISO 20643:2005
English Version
Mechanical vibration - Hand-held and hand-guided machinery -
Principles for evaluation of vibration emission (ISO 20643:2005)
Vibration mécanique - Machines tenues et guidées à la Mechanische Schwingungen - Handgehaltene und
main - Principes pour l'évaluation d'émission de vibration handgeführte Maschinen - Grundsätzliches Vorgehen bei
(ISO 20643:2005) der Ermittlung der Schwingungsemission (ISO 20643:2005)
This European Standard was approved by CEN on 25 May 2008.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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: rue de Stassart, 36  B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 20643:2008: E
worldwide for CEN national Members.

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SIST EN ISO 20643:2008
EN ISO 20643:2008 (E)
Contents Page
Foreword.3
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/EC, amended by Directive 98/79/EC .4
Annex ZB (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC .5

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SIST EN ISO 20643:2008
EN ISO 20643:2008 (E)
Foreword
The text of ISO 20643:2005 has been prepared by Technical Committee ISO/TC 118 “Compressors,
pneumatic tools and pneumatic machines” of the International Organization for Standardization (ISO) and has
been taken over as EN ISO 20643:2008 by Technical Committee CEN/TC 231 “Mechanical vibration and
shock” the secretariat of which is held by DIN.
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 December 2008, and conflicting national standards shall be withdrawn
at the latest by December 2008.
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 ISO 20643:2005.
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 EC Directive(s).
For relationship with EC Directive(s), see informative Annexes ZA and ZB, which are 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, 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 20643:2005 has been approved by CEN as a EN ISO 20643:2008 without any modification.
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SIST EN ISO 20643:2008
EN ISO 20643:2008 (E)
Annex ZA
(informative)

Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/EC, amended by Directive 98/79/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 98/37/EC on machinery, amended by 98/79/EC.
Once this standard is cited in the Official Journal of the European Communities under that Directive and has
been implemented as a national standard in at least one Member State, compliance with the normative
clauses of this standard confers, within the limits of the scope of this standard, a presumption of conformity
with the Essential Requirements 1.5.9 and 2.2 of that Directive 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.

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SIST EN ISO 20643:2008
EN ISO 20643:2008 (E)
Annex ZB
(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 Communities under that Directive and has
been implemented as a national standard in at least one Member State, compliance with the normative
clauses of this standard confers, within the limits of the scope of this standard, a presumption of conformity
with the Essential Requirements 1.5.9 and 2.2.1.1 of that Directive 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.


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SIST EN ISO 20643:2008

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SIST EN ISO 20643:2008


INTERNATIONAL ISO
STANDARD 20643
First edition
2005-01-15

Mechanical vibration — Hand-held and
hand-guided machinery — Principles for
evaluation of vibration emission
Vibration mécanique — Machines tenues et guidées à la main —
Évaluation d'émission de vibration




Reference number
ISO 20643:2005(E)
©
ISO 2005

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SIST EN ISO 20643:2008
ISO 20643:2005(E)
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ii © ISO 2005 – All rights reserved

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SIST EN ISO 20643:2008
ISO 20643:2005(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 20643 was prepared by the European Committee for Standardization (CEN) in collaboration with
Technical Committee ISO/TC 118, Compressors, pneumatic tools and pneumatic machines, Subcommittee
SC 3, Pneumatic tools and machines, in accordance with the Agreement on technical cooperation between
ISO and CEN (Vienna Agreement).
Throughout the text of this document, read “.this European Standard.” to mean “.this International
Standard.”.
For the purposes of this International Standard, the CEN annex regarding fulfilment of European Council
Directives has been removed.
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SIST EN ISO 20643:2008
ISO 20643:2005(E)


Contents
page
Foreword.v
Introduction.vi
1 Scope .1
2 Normative references.2
3 Terms, definitions and symbols.2
3.1 Terms and definitions .2
3.2 Symbols.3
4 Basic standards and vibration test codes .4
5 Description of a family of machines.4
6 Characterization of vibration.4
6.1 Direction of measurement .4
6.2 Location of measurement.5
6.3 Magnitude of vibration .6
6.4 Combination of vibration directions.6
7 Instrumentation requirements.7
7.1 General .7
7.2 Mounting of transducers .7
7.2.1 Specification of transducer .7
7.2.2 Fastening of transducer.7
7.3 Frequency weighting filter.7
7.4 Integration time.7
7.5 Auxiliary equipment .7
7.6 Calibration of the measurement chain .8
8 Testing and operating conditions of the machinery.8
8.1 General .8
8.2 Operating conditions.8
8.3 Other quantities to be specified.8
8.4 Attached equipment, workpiece and task.8
8.5 Operator.9
9 Measurement procedure and validity.9
9.1 Reported vibration value .9
9.2 Declaration and verification of the vibration emission value .9
10 Measurement report .9
Annex A (normative)  Summary of information to be given in the vibration test code.11
Annex B (informative)  Possible sources of errors during vibration measurements.13
Annex C (normative)  Procedure for developing a vibration test code for a specific category of hand-
held or hand-guided machinery.14
Bibliography .15


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SIST EN ISO 20643:2008
ISO 20643:2005(E)


Foreword
This document (EN ISO 20643:2005) has been prepared by Technical Committee CEN/TC 231 "Mechanical
vibration and shock", the secretariat of which is held by DIN, in collaboration with Technical Committee ISO/TC 118
"Compressors, pneumatic tools and pneumatic machines".
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 July 2005, and conflicting national standards shall be withdrawn at the latest by
July 2005.
This document supersedes EN 1033:1995.
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 EC Directive(s).
For relationship with EC Directive(s), see informative Annex ZA, which is an integral part of this document.
This document provides concrete rules for the application of EN 12786 in relation to vibration test codes. It is
complementary to EN 12096.
New or revised vibration test codes in the standards series EN 28662/EN ISO 8662 for portable hand-held
machines will be based on this document. All currently existing parts of EN 28662/EN ISO 8662, however, are
based on EN 28662-1:1993. It is envisaged that EN 28662-1:1993 will be withdrawn when all parts of the series
EN 28662/EN ISO 8662 have been revised in accordance with 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, Cyprus, Czech Republic, Denmark,
Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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SIST EN ISO 20643:2008
ISO 20643:2005(E)

Introduction
Human exposure to mechanical vibration from hand-held or hand-guided machinery can interfere with comfort,
working efficiency and, in some circumstances, health and safety. According to EN ISO 12100-2 the risks created
by vibrating machinery need to be minimized and the residual risk from vibration need to be noted in the relevant
instruction handbook. This, ideally, will be based on the vibration emission magnitude reported in accordance with
this document or the relevant vibration test code, but additional information for use may be required (see Clause 6
in EN ISO 12100-2:2003).
It is possible that the type test method may not identify all the mechanisms that generate vibration when the
machine is used in the real operational environment. Factors such as the workpiece, the process and the operator
can have an important influence on the vibration magnitudes. For this reason the type test measurements cannot
replace field measurements to evaluate vibration exposure at the workplace, but should be sufficiently
representative to be able to be used for preliminary assessment of risk.
Vibration magnitudes in type tests shall be within the range of measurements made in the field, but with less
variability. Type tests require accurate and reproducible conditions. It is essential that different laboratories obtain
the same results within specified limits. This requires that the process or way in which the machine is measured is
precisely defined. The operating conditions should be well defined, they should preferably be a real process, typical
of that for which the machine is designed. If it is intended to be used for a variety of tasks and the vibration is
affected significantly by the task, then more than one task might be used in determination of vibration emission. In
some cases an artificial process may be used which is not in line with the typical use of the machine in the field but
which provides equivalent data. If two machines produce significantly different magnitudes of vibration under real
conditions, then the test should be capable of demonstrating this difference.
This document is intended to assist technical standardization committees responsible for specific types of
machinery in preparing vibration test codes to ensure that such vibration test codes:
— enable users to make comparisons and to check the declared vibration emission values;
— are as homogeneous as possible with each individual test code having the same basic structure;
— are in full accordance with basic type-B standards on measurement of vibration emissions;
— reflect the latest technical knowledge of methods of determining the vibration emissions from the specific
family of machinery under consideration.
A vibration test code for a family of machinery prepared in accordance with this document:
a) produces vibration emission data which allow the determination of the vibration state-of-the-art for a family of
machinery and the identification of a machine which has significantly greater or smaller vibration emission;
b) produces vibration emission values and uncertainties suitable for comparing the emissions of machinery of the
same type irrespective of the date or location of the testing;
c) produces vibration emission values and uncertainties corresponding to the upper quartile of vibration
magnitudes resulting from intended uses of the machinery;
d) specifies the operating conditions of the machine during testing that are, so far as practicable, representative of
normal use;
e) identifies parameters that have a significant influence on the vibration emission of the machinery;
f) specifies installation and mounting conditions of transducers, measurement positions and measurement
directions;
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SIST EN ISO 20643:2008
ISO 20643:2005(E)

g) prescribes equipment used during testing and
h) requires recording of the values of machinery operating parameters that may influence vibration emission.
This document can be used, in the absence of an agreed vibration test code, as a guide to determine vibration
emission values and to define test parameters that may influence vibration emission to be recorded.
This document is a type-B standard as stated in EN ISO 12100-1.
The provisions of this document may be supplemented or modified by a type-C standard. However, for machines
which are covered by the scope of a type-C standard and which have been designed and built according to the provisions of
that standard, the provisions of that type-C standard take precedence over the provisions of this type-B standard.
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SIST EN ISO 20643:2008
ISO 20643:2005(E)
1 Scope
This document provides the basis for the drafting of vibration test codes for hand-held and hand-guided power-
driven machinery. It specifies the determination of hand-transmitted vibration emission in terms of frequency-
weighted root-mean-square (r.m.s.) acceleration during type testing. For machines where vibration test codes do
not exist, it may also be used for determination of emission values and contains sufficient guidance for designing
an appropriate test.
NOTE Vibration test codes based on this document should define measuring procedures which provide controlled,
repeatable and reproducible results which are, as far as possible, in agreement with the vibration values measured at the
machine-hand contact surfaces under real working conditions and for which the uncertainties of measurement are quantified.
This document is applicable to hand-held power tools (e.g. chipping hammers, sanders), hand-guided powered
machines (e.g. lawn mowers, single-axle tractors, vibratory rollers) and other types of powered machines fitted with
handles, guiding beams or similar means of control. It is applicable to machinery of all power sources (electrical,
hydraulic, pneumatic, internal combustion engine, etc.).
It does not apply to fixed machinery in which the vibration is transmitted to the hands of the user through the
workpiece.
This document is not applicable to vibration transmitted from steering wheels or control levers of mobile machinery
where the operator's position is on the machine, see EN 1032.
It is restricted to translational vibration measured in three orthogonal directions at the hand-machine interface.
This document should be applied with caution to machines producing single and repetitive shocks with a frequency
of occurrence lower than 5 Hz. For such machines, it is not known whether frequency-weighted root-mean-square
acceleration values are related to the risks to health and additional measurements may be required. When
developing vibration test codes for such machines the information in CEN ISO/TS 15694 should be considered.
This document is not applicable to vibration test codes published before the date of publication of this document by
CEN and, when used as test code, to hand-held and hand-guided machinery manufactured before that date.
This document does not present limits or recommended vibration values. It does not give any guidance or
recommendations for determination of human exposure to vibration at the workplace. For such information,
reference is made to EN ISO 5349-1 and EN ISO 5349-2.
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SIST EN ISO 20643:2008
ISO 20643:2005(E)
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.
EN 12096, Mechanical vibration — Declaration and verification of vibration emission values.
ENV 28041, Human response to vibration — Measuring instrumentation (ISO 8041:1990).
EN ISO 5349-1, Mechanical vibration — Measurement and evaluation of human exposure to hand-transmitted
vibration — Part 1: General requirements (ISO 5349-1:2001).
ISO 2041:1990, Vibration and shock — Vocabulary.
ISO 5347 (all parts), Methods for the calibration of vibration and shock pick-ups.
ISO 5805:1997, Mechanical vibration and shock — Human exposure — Vocabulary.
ISO 16063 (all parts), Methods for the calibration of vibration and shock transducers.
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 2041:1990 and ISO 5805:1997 and the
following apply.
3.1.1
family of machinery
machines of similar design to fulfil the same functions
EXAMPLE chain saws
3.1.2
hand-guided machine
machine which is guided by the operator with his hands, such that the vibration exposure is obtained through the
handles, steering wheel or tiller
[EN ISO 5349-2]
EXAMPLE walk-behind cutting machine, swing grinder
3.1.3
hand-held power tool
powered tool which is held in the hand and for which a feed force is necessary to fulfil a task
EXAMPLE electric drill, pneumatic chisel, chain-saw
3.1.4
inserted tool
interchangeable or replaceable attachment which fits into or onto a hand-held power tool or hand-guided machine
for performing the intended operation
EXAMPLE drill bit, chisel, saw chain, saw blade, abrasive wheel
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SIST EN ISO 20643:2008
ISO 20643:2005(E)
3.1.5
equipment
specific interchangeable attachment other than an inserted tool to complete the machine
EXAMPLE guards, side handles
3.1.6
operation
identified task for which a representative vibratio
...