EN ISO 16231-2:2015

SLOVENSKI STANDARD
01-december-2015
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Self-propelled agricultural machinery - Assessment of stability - Part 2: Determination of
static stability and test procedures (ISO 16231-2:2015)
Selbstfahrende Landmaschinen - Bewertung der Standfestigkeit - Teil 2: Bestimmung
der statischen Standfestigkeit und Prüfverfahren (ISO 16231-2:2015)
Machines agricoles automotrices - Évaluation de la stabilité - Partie 2: Détermination de
la stabilité statique et modes opératoires d'essai (ISO 16231-2:2015)
Ta slovenski standard je istoveten z: EN ISO 16231-2:2015
ICS:
65.060.10 Kmetijski traktorji in prikolice Agricultural tractors and
trailed vehicles
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 16231-2
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2015
EUROPÄISCHE NORM
ICS 65.060.01
English Version
Self-propelled agricultural machinery - Assessment of
stability - Part 2: Determination of static stability and test
procedures (ISO 16231-2:2015)
Machines agricoles automotrices - Évaluation de la Selbstfahrende Landmaschinen - Bewertung der
stabilité - Partie 2: Détermination de la stabilité Standfestigkeit - Teil 2: Bestimmung der statischen
statique et modes opératoires d'essai (ISO 16231- Standfestigkeit und Prüfverfahren (ISO 16231-2:2015)
2:2015)
This European Standard was approved by CEN on 29 August 2015.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16231-2:2015 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European standard and the Essential
Requirements of EU Directive 2006/42/EC . 4

European foreword
This document (EN ISO 16231-2:2015) has been prepared by Technical Committee ISO/TC 23 “Tractors
and machinery for agriculture and forestry” in collaboration with Technical Committee CEN/TC 144
“Tractors and machinery for agriculture and forestry” the secretariat of which is held by AFNOR.
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 2016, and conflicting national standards shall
be withdrawn at the latest by March 2016.
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 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(s).
For relationship with EU Directive(s), 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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 16231-2:2015 has been approved by CEN as EN ISO 16231-2:2015 without any
modification.
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 normative
clauses of this standard confers, within the limits of the scope of this standard, a presumption of
conformity with the relevant Essential Requirement 3.4.3 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.
INTERNATIONAL ISO
STANDARD 16231-2
First edition
2015-09-15
Self-propelled agricultural
machinery — Assessment of stability —
Part 2:
Determination of static stability and
test procedures
Machines agricoles automotrices — Évaluation de la stabilité —
Partie 2: Détermination de la stabilité statique et modes
opératoires d’essai
Reference number
ISO 16231-2:2015(E)
©
ISO 2015
ISO 16231-2:2015(E)
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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ii © ISO 2015 – All rights reserved

ISO 16231-2:2015(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Determination of the centre of gravity (COG) of a self-propelled machine .2
4.1 Method to determine and to calculate the centre of gravity of the un-laden machine . 2
4.2 Remarks and items to observe during this procedure . 2
4.3 Methods to determine the centre of gravity of a laden machine or a machine
with attachments . 5
4.3.1 Graphical method . 5
4.3.2 Mathematical method . . . 7
5 Static overturning angle (SOA). 8
5.1 General . 8
5.2 Lateral roll-over: Machines with one fixed and one swivelling axle (without axle
swivel limiting device). 8
5.2.1 General. 8
5.2.2 Graphical determination of the stability . 9
5.2.3 Determination of the stability by calculation .10
5.3 Lateral roll-over: Machines with one fixed and one swivelling axle with swivelling
angle limiting device .11
5.4 Lateral roll—over: machines without swivelling axle .13
5.4.1 Machines on tracks .13
5.4.2 Machines with devices to lock the swivelling axle or to modify the
stability triangle .13
5.4.3 Machines with individual wheel suspension .13
5.5 Tip forward and tip rearward .13
5.5.1 Tip forward .13
5.5.2 Tip rearward .13
5.6 Body levelling systems .14
5.7 Alternative methods .14
6 Comparison of SOA and RSSA .14
Annex A (informative) Example of calculation of centre of gravity (see Clause 4) .15
Annex B (informative) Example of calculation of static overturning angle (see Clause 5) .16
Annex C (normative) Calculation of RSSA .18
Annex D (informative) Impact of dynamic effects on roll-over or tip-over .19
ISO 16231-2:2015(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different ty
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