ISO 20019
(Main)Agricultural vehicles — Mechanical connections on towed vehicles — Dimensions for hitch rings
Agricultural vehicles — Mechanical connections on towed vehicles — Dimensions for hitch rings
This International Standard specifies dimensional requirements for the attachment of agricultural, non-balanced trailers and implements by means of hitch rings to the rear of towing vehicles equipped with a hook specified in ISO 6489-1. Its purpose is to ensure the interchangeability of the mechanical connections on agricultural towed vehicles. This International Standard is applicable to rings whose coupling point is below the centre-line of the rear axle and the power take-off (PTO) of the tractor. NOTE Other International Standards are to be developed for rings above the PTO coupling.
Véhicules agricoles — Liaisons mécaniques sur véhicules remorqués — Dimensions des anneaux d'attelage
La présente Norme internationale spécifie les dimensions de l'attelage des remorques agricoles semi-portées et des instruments agricoles attelés au moyen d'anneaux d'attelage à l'arrière du véhicule tracteur équipé d'un crochet d'attelage tel que spécifié dans l'ISO 6489-1. Elle a pour objet d'assurer l'interchangeabilité des liaisons mécaniques entre véhicules agricoles remorqués. La présente Norme internationale s'applique aux anneaux dont le point d'attelage est situé au-dessous de la ligne médiane de l'essieu arrière et au-dessous de la prise de force (p.d.f.) du tracteur. NOTE D'autres Normes internationales sont en cours d'élaboration pour les anneaux attelés au-dessus de la p.d.f.
General Information
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Standards Content (Sample)
International
Standard
Second edition
Agricultural vehicles — Mechanical
connections on towed vehicles —
Dimensions for hitch rings
Véhicules agricoles — Liaisons mécaniques sur véhicules
remorqués — Dimensions des anneaux d'attelage
PROOF/ÉPREUVE
Reference number
© ISO 2025
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: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
PROOF/ÉPREUVE
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Interchangeability dimensions . 1
4.1 General .1
4.2 Trailer shank travel angles .1
5 Construction . 2
Bibliography . 4
PROOF/ÉPREUVE
iii
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 respons
...
ISO/PRF 20019
ISO/TC 23/SC 4
Secretariat: DIN
Date: 2025-01-13
Agricultural vehicles — Mechanical connections on towed vehicles —
Dimensions for hitch rings
Véhicules agricoles — Liaisons mécaniques sur véhicules remorqués — Dimensions des anneaux d'attelage
PROOF
ISO/PRF 20019:2025(en)
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: + 41 22 749 01 11
E-mail: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO/PRF 20019:2025(en)
Contents
Foreword . iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Interchangeability dimensions . 1
5 Construction . 2
Bibliography . 6
Foreword . iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Interchangeability dimensions . 1
5 Construction . 2
Bibliography . 6
iii
ISO/PRF 20019:2025(en)
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.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.
For an explanation of the volu
...
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