ISO 4254-13:2023

Agricultural machinery — Safety — Part 13: Large rotary mowers

This document, when used together with ISO 4254-1, specifies the safety requirements and their verification for the design and construction of towed, semi-mounted, or mounted large rotary mowers with single or multiple cutting elements which have a cutting element tip circle of 1 000 mm or greater for any single cutting-element assembly, mounted on a propelling tractor or machine, intended for agricultural mowing equipment and designed for shredding crop residue, grass and small brush by impact. It describes methods for the elimination or reduction of hazards arising from the intended use and reasonably foreseeable misuse of these machines by one person (the operator) in the course of normal operation and service. In addition, it specifies the type of information on safe working practices to be provided by the manufacturer. NOTE 1 When used outside of agriculture, additional requirements not specified in this document can be applicable. This document is not applicable to: — rotary disc mowers, rotary drum mowers, and flail mowers designed for forage crop harvesting as covered by ISO 4254-12; — arm-type large rotary mowers; — pedestrian-controlled motor mowers; — lawn mowers covered by the ISO 5395 series. When requirements of this document are different from those which are stated in ISO 4254-1, the requirements of this document take precedence over the provisions of ISO 4254-1 for machines that have been designed and built according to the provisions of this document. This document is also not applicable to environmental hazards, road safety, electromagnetic compatibility, vibration and hazards related to moving parts for power transmission. It is also not applicable to hazards related to maintenance or repairs to be carried out by professional service personnel. This document, taken together with ISO 4254-1, deals with all the significant hazards, hazardous situations and events relevant to large rotary mowers used as intended and under the conditions foreseen by the manufacturer. (A list of significant hazards is provided in Annex A.) NOTE 2 Example illustrations of two mowers (a rigid-deck large rotary mower and a trail-type multi-section, foldable-wing large rotary mower) dealt with in this document are shown in Annex C, C.1. NOTE 3 Example illustrations of mowers not dealt with in this document are shown in Annex C, C.2. NOTE 4 ISO 14982 specifies test methods and acceptance criteria for evaluating the electromagnetic compatibility of all kinds of mobile agricultural machinery. This document is not applicable to large rotary mowers which are manufactured before the date of publication.

Matériel agricole — Sécurité — Partie 13: Grandes faucheuses rotatives

Le présent document, destinée à être utilisée conjointement avec l'ISO 4254-1, spécifie les exigences de sécurité et leur vérification pour la conception et la construction de grandes faucheuses rotatives tractées, semi-portées ou portées pourvues d'un ou de plusieurs éléments de coupe ayant une circonférence de coupe supérieur ou égal à 1 000 mm, montées sur un tracteur ou une machine motrice, destinées au matériel de fauchage agricole et conçues pour le broyage de résidus végétaux, d'herbe et de broussailles par impact. Il décrit des méthodes permettant de réduire ou d'éliminer les phénomènes dangereux découlant d'une utilisation normale et d'une mauvaise utilisation raisonnablement prévisible de ces machines par une personne (l'opérateur) au cours du fonctionnement normal et de l'entretien. En outre, il spécifie le type d'informations que le fabricant doit donner sur les pratiques d'utilisation sûre. NOTE 1 En cas d'utilisation dans une activité non agricole, des exigences supplémentaires non spécifiées dans le présent document peuvent s'appliquer. Le présent document ne s'applique pas: — aux faucheuses rotatives à disques, aux faucheuses à tambours rotatifs et aux faucheuses-broyeuses conçues pour la récolte de fourrage qui sont couvertes par l'ISO 4254-12; — aux grandes faucheuses rotatives à bras; — aux motofaucheuses à conducteur à pied; — aux tondeuses à gazon qui sont couvertes par la série ISO 5395. Lorsque des exigences du présent document sont différentes de celles énoncées dans l'ISO 4254-1, les exigences du présent document prévalent sur les dispositions de l'ISO 4254-1 pour les machines conçues et fabriquées conformément aux dispositions du présent document. Le présent document ne s'applique pas aux phénomènes dangereux liés à environnement, à la sécurité routière, à la compatibilité électromagnétique, aux vibrations ni aux phénomènes dangereux liés aux éléments mobiles de transmission de puissance. Il ne s'applique pas non plus aux phénomènes dangereux liés aux opérations de maintenance ou de réparation qui doivent être exécutées par des professionnels habilités. Le présent document, utilisé conjointement avec l'ISO 4254-1, traite de tous les phénomènes dangereux et situations et événements dangereux significatifs inhérents aux grandes faucheuses rotatives dans le cadre d'une utilisation normale et des conditions prévues par le fabricant. (Une liste de phénomènes dangereux significatifs est fournie à l'Annexe A.) NOTE 2 À titre d'exemple, deux illustrations de faucheuses (une grande faucheuse rotative à châssis rigide et une grande faucheuse rotative traînée à ailes repliables multisection) couvertes par le présent document sont présentées en Annexe C, C.1. NOTE 3 À titre d'exemple, des illustrations de faucheuses non couvertes par le présent document sont présentées en Annexe C, C.2. NOTE 4 L'ISO 14982 spécifie des méthodes d'essai et des critères d'acceptation pour l'évaluation de la compatibilité électromagnétique de tous les types de matériel agricole mobile. Le présent document ne s'applique pas aux grandes faucheuses rotatives fabriquées avant sa date de publication par l'ISO.

General Information

• Status: Published
• Publication Date: 18-Apr-2023
• ICS: 65.060.01 - Agricultural machines and equipment in general
• Technical Committee: ISO/TC 23/SC 7 - Equipment for harvesting and conservation
• Drafting Committee: ISO/TC 23/SC 7/WG 14 - Agricultural mowers and blades
• Current Stage: 6060 - International Standard published
• Start Date: 19-Apr-2023
• Due Date: 27-Feb-2023
• Completion Date: 19-Apr-2023

Relations

• Revises: ISO 4254-13:2012 - Agricultural machinery — Safety — Part 13: Large rotary mowers
• Effective Date: 23-Apr-2020

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 4254-13
Second edition
2023-04
Agricultural machinery — Safety —
Part 13:
Large rotary mowers
Matériel agricole — Sécurité —
Partie 13: Grandes faucheuses rotatives
Reference number
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .v
Introduction .vii
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
3.1 Rotary mowers . 2
3.2 Cutting elements . 3
3.3 Thrown-object testing . 3
4 Safety requirements and/or protective/risk reduction measures .4
4.1 General . 4
4.2 Protection against thrown objects . 4
4.3 Protection against inadvertent contact with the cutting elements . 4
4.4 Rotating power component guarding and shielding . 5
4.5 Overrunning clutch or freewheel device . 5
4.6 Attachment means for trailed mowers . 5
4.7 Attachment means for mounted and semi-mounted mowers . 5
4.8 Cutting elements . 5
4.9 Impact of the cutting-element assemblies . 5
4.10 Unbalance . 6
4.11 Structural integrity . 6
5 Verification of safety requirements and/or protective/risk reduction measures .6
5.1 Test conditions — General . 6
5.1.1 Assembly. 6
5.1.2 Mower position . 6
5.1.3 Test speed . 6
5.1.4 Number of tests . 6
5.2 Foot-probe test . 6
5.2.1 Foot-probe test equipment . 6
5.2.2 Test conditions . 8
5.2.3 Test procedure. 9
5.2.4 Test acceptance . 9
5.3 Impact test for cutting-element assemblies . 9
5.3.1 Test equipment . 9
5.3.2 Test conditions . 9
5.3.3 Test procedure. 9
5.3.4 Test acceptance . 12
5.4 Unbalance test for cutting-element assemblies .12
5.4.1 Test equipment .12
5.4.2 Test conditions — Multi-piece cutting element assembly .12
5.4.3 Test conditions — One-piece cutting element construction .12
5.4.4 Test procedure.12
5.4.5 Test acceptance . 12
5.5 Structural integrity test .12
5.5.1 Test equipment .12
5.5.2 Test conditions . 13
5.5.3 Test procedure.13
5.5.4 Test acceptance . 13
5.6 Thrown object test .13
5.6.1 Operator zone . .13
5.6.2 Test equipment . 16
5.6.3 Test conditions . 17
5.6.4 Test procedure. 18
iii
5.6.5 Scoring . 19
5.6.6 Test acceptance . 19
6 Information for use .20
6.1 Operator's manual . 20
7 Marking and safety signs .21
7.1 Marking . 21
7.2 Safety signs . 21
Annex A (informative) List of significant hazards .22
Annex B (informative) Example of test recording forms .24
Annex C (informative) Example illustrations of mowers .27
Annex D (normative) Corrugated fibreboard penetration tests .30
Bibliography .32
iv
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 types of ISO document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received
notice of (a) patent(s) which may be required to implement this document. However, implementers are
cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents. ISO shall not be held responsible for identifying any or all
such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
Fo
...