SIST EN ISO 7096:2008

SLOVENSKI STANDARD
SIST EN ISO 7096:2008
01-november-2008
1DGRPHãþD
SIST EN ISO 7096:2000
SIST EN ISO 7096:2000/AC:2004
Stroji za zemeljska dela - Laboratorijski postopek za ovrednotenje vibracij
voznikovega sedeža (ISO 7096:2000)
Earth-moving machinery - Laboratory evaluation of operator seat vibration (ISO
7096:2000)
Erdbaumaschinen - Laborverfahren zur Bewertung der Schwingungen des
Maschinenführersitzes (ISO 7096:2000)
Engins de terrassement - Évaluation en laboratoire des vibrations transmises à
l'opérateur par le siège (ISO 7096:2000)
Ta slovenski standard je istoveten z: EN ISO 7096:2008
ICS:
13.160 Vpliv vibracij in udarcev na Vibration and shock with
ljudi respect to human beings
53.100 Stroji za zemeljska dela Earth-moving machinery
SIST EN ISO 7096:2008 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 7096:2008

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SIST EN ISO 7096:2008
EUROPEAN STANDARD
EN ISO 7096
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2008
ICS 53.100; 13.160 Supersedes EN ISO 7096:2000
English Version
Earth-moving machinery - Laboratory evaluation of operator seat
vibration (ISO 7096:2000)
Engins de terrassement - Évaluation en laboratoire des Erdbaumaschinen - Laborverfahren zur Bewertung der
vibrations transmises à l'opérateur par le siège (ISO Schwingungen des Maschinenführersitzes (ISO 7096:2000)
7096:2000)
This European Standard was approved by CEN on 25 August 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 7096:2008: E
worldwide for CEN national Members.

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SIST EN ISO 7096:2008
EN ISO 7096:2008 (E)
Contents Page
Foreword.3
Annex ZA (normative) Normative references to international publications with their relevant
European publications .4
Annex ZB (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/EC .5
Annex ZC (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC .6

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SIST EN ISO 7096:2008
EN ISO 7096:2008 (E)
Foreword
The text of ISO 7096:2000 has been prepared by Technical Committee ISO/TC 127 “Earth-moving machinery”
of the International Organization for Standardization (ISO) and has been taken over as EN ISO 7096:2008 by
Technical Committee CEN/TC 151 “Construction equipment and building material machines - Safety” 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 March 2009, and conflicting national standards shall be withdrawn at
the latest by December 2009.
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 7096:2000.
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 EU Directives, see informative Annexes ZB and ZC, which are integral parts 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 7096:2000 has been approved by CEN as a EN ISO 7096:2008 without any modification.
NOTE: Normative references to International Standards are listed in annex ZA (normative).

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SIST EN ISO 7096:2008
EN ISO 7096:2008 (E)
Annex ZA
(normative)

Normative references to international publications with their relevant
European publications

This European Standard incorporates by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to
this European Standard only when incorporated in it by amendment or revision. For undated references the
latest edition of the publication referred to applies.

Publication Year Title EN Year
ISO 6165 1997 Earth-moving machinery - Basic types - EN ISO 6165 2006
Vocabulary
ISO 8041 1990 Human response to vibration – Measuring ENV 28041 1993
instrumentation
ISO 10326-1 1992 Mechanical vibration - Laboratory method for EN 30326-1 1994
evaluating vehicle seat vibration - Part 1:
Basic requirements
ISO 13090-1 1998 Mechanical vibration and shock - Guidance EN ISO 13090-1 1998
on safety aspects of tests and experiments
with people - Part 1: Exposure to whole-body
mechanical vibration and repeated shock
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SIST EN ISO 7096:2008
EN ISO 7096:2008 (E)
Annex ZB
(informative)

Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/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 Machinery 98/37/EC, 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 relevant Essential Requirements 1.5.9 and 3.2.2 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 7096:2008
EN ISO 7096:2008 (E)
Annex ZC
(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 relevant Essential Requirements 1.1.8 and 1.5.9 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 7096:2008
INTERNATIONAL ISO
STANDARD 7096
Third edition
2000-03-01
Earth-moving machinery — Laboratory
evaluation of operator seat vibration
Engins de terrassement — Évaluation en laboratoire des vibrations
transmises à l'opérateur par le siège
Reference number
ISO 7096:2000(E)
©
ISO 2000

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SIST EN ISO 7096:2008
ISO 7096:2000(E)
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ii © ISO 2000 – All rights reserved

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SIST EN ISO 7096:2008
ISO 7096:2000(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 3.
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 International Standard may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 7096 was prepared by Technical Committee ISO/TC 127, Earth-moving machinery,
Subcommittee SC 2, Safety requirements and human factors.
This third edition cancels and replaces the second edition (ISO 7096:1994), which has been technically revised.
© ISO 2000 – All rights reserved iii

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SIST EN ISO 7096:2008
ISO 7096:2000(E)
Introduction
The operators of earth-moving machinery are often exposed to a low frequency vibration environment partly
caused by the movement of the vehicles over uneven ground and the tasks carried out. The seat constitutes the
last stage of suspension before the driver. To be efficient at attenuating the vibration, the suspension seat should
be chosen according to the dynamic characteristics of the vehicle. The design of the seat and its suspension are a
compromise between the requirements of reducing the effect of vibration and shock on the operator and providing
him with stable support so that he can control the machine effectively.
Thus, seat vibration attenuation is a compromise of a number of factors and the selection of seat vibration
parameters needs to be taken in context with the other requirements for the seat.
The performance criteria provided in this International Standard have been set in accordance with what is
attainable using what is at present the best design practice. They do not necessarily ensure the complete
protection of the operator against the effects of vibration and shock. They may be revised in the light of future
developments and improvements in suspension design.
The test inputs included in this International Standard are based on a very large number of measurements taken in
situ on earth-moving machinery used under severe but typical operating conditions. The test methods are based on
ISO 10326-1, which is a general method applicable to seats for different types of vehicles.
iv © ISO 2000 – All rights reserved

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SIST EN ISO 7096:2008
INTERNATIONAL STANDARD ISO 7096:2000(E)
Earth-moving machinery — Laboratory evaluation of
operator seat vibration
1 Scope
1.1 This International Standard specifies, in accordance with ISO 10326-1, a laboratory method for measuring
and evaluating the effectiveness of the seat suspension in reducing the vertical whole-body vibration transmitted to
the operator of earth-moving machines at frequencies between 1 Hz and 20 Hz. It also specifies acceptance criteria
for application to seats on different machines.
1.2 This International Standard is applicable to operator seats used on earth-moving machines as defined in
ISO 6165.
1.3 This International Standard defines the input spectral classes required for the following earth-moving
machines. Each class defines a group of machines having similar vibration characteristics:
1�
� rigid frame dumpers > 4 500 kg operating mass
� articulated frame dumpers
2�
� scrapers without axle or frame suspension
)
1
� wheel-loaders > 4 500 kg operating mass
� graders
� wheel-dozers
� soil compactors (wheel type)
� backhoe-loaders
� crawler loaders
1), 3�
� crawler-dozersu 50 000 kg operating mass
1)
� compact dumpersu 4 500 kg operating mass
1)
� compact loadersu 4 500 kg operating mass
1)
� skid-steer loadersu 4 500 kg operating mass
1� See ISO 6016.
2� For tractor scrapers with suspension, either a seat with no suspension may be used, or one having a suspension with high
damping.
3� For crawler dozers greater than 50 000 kg, the seat performance requirements are suitably provided by a cushion type seat.
© ISO 2000 – All rights reserved 1

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SIST EN ISO 7096:2008
ISO 7096:2000(E)
1.4 The following machines impart sufficiently low vertical vibration inputs at frequencies between 1 Hz and
20 Hz to the seat during operation that these seats do not require suspension for the attenuation of transmitted
vibration:
4�
� excavators, including walking excavators and cable excavators
� trenchers
� landfill compactors
� non-vibratory rollers
� milling machines
� pipelayers
� finishers
� vibratory rollers
1.5 The tests and criteria defined in this International Standard are intended for operator seats used in earth-
moving machines of conventional design.
NOTE Other tests may be appropriate for machines with design features that result in significantly different vibration
characteristics.
1.6 Vibration which reaches the operator other than through his seat, for example that sensed by his feet on the
platform or control pedals or by his hands on the steering-wheel, is not covered.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this International Standard. For dated references, subsequent amendments to, or revisions of, any of these
publications do not apply. However, parties to agreements based on this International Standard are encouraged to
investigate the possibility of applying the most recent editions of the normative documents indicated below. For
undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC
maintain registers of currently valid International Standards.
ISO 2041:1990, Vibration and shock — Vocabulary.
ISO 2631-1:1997, Mechanical vibration and shock — Evaluation of human exposure to whole-body vibration —
Part 1: General requirements.
ISO 6016:1998, Earth-moving machinery — Methods of measuring the masses of whole machines, their equipment
and components.
ISO 6165:1997, Earth-moving machinery — Basic types — Vocabulary.
ISO 8041:1990, Human response to vibration — Measuring instrumentation.
ISO 10326-1:1992, Mechanical vibration — Laboratory method for evaluating vehicle seat vibration — Part 1: Basic
requirements.
ISO 13090-1:1998, Mechanical vibration and shock — Guidance on safety aspects of tests and experiments with
people — Part 1: Exposure to whole-body mechanical vibration and repeated shock.
4� For excavators, the predominant vibration is generally in the fore and aft (X) axis.
2 © ISO 2000 – All rights reserved

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SIST EN ISO 7096:2008
ISO 7096:2000(E)
3 Terms, definitions, symbols and abbreviations
3.1 Terms and definitions
For the purposes of this International Standard, the terms and definitions given in ISO 2041 and the following
apply.
3.1.1
whole-body vibration
vibration transmitted to the body as a whole through the buttocks of a seated operator
3.1.2
input spectral class
machines having similar ride vibration characteristics at the seat attachment point, grouped by virtue of various
mechanical characteristics
3.1.3
operating mass
mass of the base machine with equipment and empty attachment as specified by the manufacturer, and with the
operator (75 kg), full fuel tank and all fluid systems at the levels specified by the manufacturer
[ISO 6016:1998, 3.2.1]
3.1.4
operator seat
that portion of the machine provided for the purpose of supporting the buttocks and back of the seated operator,
including any suspension system and other mechanisms provided (for example, for adjusting the seat position)
3.1.5
frequency analysis
process of arriving at a quantitative description of a vibration amplitude as a function of frequency
3.1.6
measuring period
time duration in which vibration data for analysis is obtained
3.2 Symbols and abbreviations
For the purposes of this International Standard, the following symbols and abbreviations apply.
a (f ) Unweighted rms value of the measured vertical acceleration at the platform at the resonance
P r
frequency
a* , a* Unweighted rms value of the target vertical acceleration at the platform under the seat (see
P12 P34
Figure 3) between frequencies f and f ,or f and f
1 2 3 4
a , a Unweighted rms value of the measured vertical acceleration at the platform between frequencies f
1
P12 P34
and f ,or f and f
2 3 4
a (f ) Unweighted rms value of the measured vertical acceleration at the seat disk at the resonance
S r
frequency
a* , a* Weighted rms value of the target vertical acceleration at the platform between frequencies f and
1
wP12 wP34
f ,or f and f
2 3 4
a Weighted rms value of the measured vertical acceleration at the platform between frequencies f
1
wP12
and f
2
© ISO 2000 – All rights reserved 3

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SIST EN ISO 7096:2008
ISO 7096:2000(E)
a Weighted rms value of the measured vertical acceleration at the seat disk (see Figure 3) between
wS12
frequencies f and f
1 2
B Resolution bandwidth, in hertz
e
f Frequency, in hertz
f Frequency at resonance
r
G (f) Measured PSD of the vertical vibration at the platform (seat base)
P
G* (f) Target PSD of the vertical vibration at the platform (seat base)
P
G* (f) Lower limit for the measured PSD of the vertical vibration at the platform (seat base)
PL
G* (f) Upper limit for the measured PSD of the vertical vibration at the platform (seat base)
PU
H(f ) Transmissibility at resonance
r
2 2
PSD Power Spectral Density, expressed as acceleration squared per unit bandwidth (m/s ) /Hz
rms root mean square
SEAT Seat Effective Amplitude Transmissibility factor
T Sampling time, in seconds
s
4 General
4.1 The laboratory-simulated machine vertical vibration, specified as input spectral class, is based on
representative measured data from machines in severe but typical working conditions. The input spectral class is a
representative envelope for the machines within the class, as measured under severe conditions.
4.2 Two crite
...