ISO 8759-3:2018
(Main)Agricultural tractors - Front-mounted equipment - Part 3: Power take-off: General specifications and location
Agricultural tractors - Front-mounted equipment - Part 3: Power take-off: General specifications and location
This document gives general specification and location requirements for front-mounted power take-offs (PTO) on agricultural tractors. NOTE 1 Further specifications for front-mounted power take-offs are given in ISO 8759-1. It is not applicable to tractors which are designed to run in two directions, where either end can be considered to be the front or the rear. NOTE 2 In this case, ISO 500 (all parts) apply.
Tracteurs agricoles — Équipement monté à l'avant — Partie 3: Prise de force: Spécifications générales et emplacement
Le présent document donne des spécifications générales et des exigences relatives à l'emplacement des prises de force montées à l'avant des tracteurs agricoles. NOTE 1 De plus amples spécifications concernant les prises de force montées à l'avant sont données dans l'ISO 8759-1. Il n'est pas applicable aux tracteurs conçus pour se déplacer dans deux directions et dont chacune des deux extrémités peut être indifféremment considérée comme l'extrémité avant ou l'extrémité arrière. NOTE 2 Dans ce cas, l'ISO 500 (toutes les parties) s'appliquent.
General Information
- Status
- Published
- Publication Date
- 14-Nov-2018
- Technical Committee
- ISO/TC 23/SC 4 - Tractors
- Drafting Committee
- ISO/TC 23/SC 4/WG 8 - Power take-off (PTO) and drawbar
- Current Stage
- 9093 - International Standard confirmed
- Start Date
- 22-Jul-2024
- Completion Date
- 13-Dec-2025
Relations
- Effective Date
- 04-Nov-2015
Overview
ISO 8759-3:2018 sets out general specifications and location requirements for front-mounted power take-offs (PTO) on agricultural tractors. This international standard is designed to ensure compatibility, safety, and efficiency of front-mounted PTOs used in agricultural operations. It complements related standards such as ISO 8759-1, which covers safety requirements and clearance zones for PTOs. ISO 8759-3:2018 specifically excludes tractors designed to operate in bi-directional modes, for which ISO 500 series standards apply.
Key aspects covered include the type and rotational frequency of the PTO, its direction of rotation, and precise location specifications to harmonize fitting across different tractor models.
Key Topics
PTO Types and Rotational Frequency
The standard aligns PTO types with those defined in ISO 500-1:2014, covering Power Take-Off types 1 through 4, ensuring consistent rotational speed standards across tractor equipment.Direction of Rotation
Front-mounted PTO shafts shall rotate in an anti-clockwise direction when viewed from the front of the tractor. This is a critical safety and compatibility specification, with clear marking requirements for the direction and speed of rotation.Location Requirements
Precise positioning of the PTO unit on the tractor front is mandated according to ISO 500-3:2014 dimensions. These dimensions account for the tractor's normal tyre sizes and suspension conditions, especially relevant for front axle suspension tractors in their working positions.Terms and Definitions
The document refers to definitions standardized in ISO 8759-1, maintaining consistent terminology across related tractor and agricultural equipment standards.
Applications
Agricultural Tractor Manufacturing
ISO 8759-3 helps manufacturers design front-mounted PTOs that meet international guidelines, ensuring equipment compatibility and operator safety.Tractor Equipment Compatibility
Implements and attachments that connect via front-mounted PTO can rely on these standards for uniform fit and function, enhancing interchangeability.Safety Compliance
By standardizing rotation direction and marking, this standard contributes to safer tractor operations, minimizing incorrect PTO use.Tractor Engineering and Design
The document provides engineers with detailed specifications for integrating front PTO systems into existing tractor frameworks and new models, including consideration for suspension and tyre size variations.
Related Standards
ISO 8759-1: Agricultural tractors - Front-mounted equipment - Part 1: Power take-off - Safety requirements and clearance zone
Further safety and clearance specifications for front-mounted PTOs.ISO 500 Series: Agricultural tractors - Rear-mounted power take-off types 1, 2, 3, and 4
Relevant especially for tractors designed for bi-directional operation or rear PTO configurations.ISO 5673-2: Agricultural tractors and machinery - Power take-off drive shafts and power-input connection - Part 2: Specification for use of PTO drive shafts
Outlines specifications for PTO drive shafts, clearance, and positioning of attachments.
By adhering to ISO 8759-3:2018, agricultural manufacturers and operators can ensure front-mounted PTOs are designed with uniformity in location, function, and safety, supporting effective tractor-equipment integration worldwide. Keywords: agricultural tractors, front-mounted power take-off, PTO specifications, tractor safety, ISO standards agricultural equipment.
ISO 8759-3:2018 - Agricultural tractors — Front-mounted equipment — Part 3: Power take-off: General specifications and location Released:11/15/2018
ISO 8759-3:2018 - Tracteurs agricoles — Équipement monté à l'avant — Partie 3: Prise de force: Spécifications générales et emplacement Released:11/15/2018
Frequently Asked Questions
ISO 8759-3:2018 is a standard published by the International Organization for Standardization (ISO). Its full title is "Agricultural tractors - Front-mounted equipment - Part 3: Power take-off: General specifications and location". This standard covers: This document gives general specification and location requirements for front-mounted power take-offs (PTO) on agricultural tractors. NOTE 1 Further specifications for front-mounted power take-offs are given in ISO 8759-1. It is not applicable to tractors which are designed to run in two directions, where either end can be considered to be the front or the rear. NOTE 2 In this case, ISO 500 (all parts) apply.
This document gives general specification and location requirements for front-mounted power take-offs (PTO) on agricultural tractors. NOTE 1 Further specifications for front-mounted power take-offs are given in ISO 8759-1. It is not applicable to tractors which are designed to run in two directions, where either end can be considered to be the front or the rear. NOTE 2 In this case, ISO 500 (all parts) apply.
ISO 8759-3:2018 is classified under the following ICS (International Classification for Standards) categories: 65.060.10 - Agricultural tractors and trailed vehicles. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 8759-3:2018 has the following relationships with other standards: It is inter standard links to ISO 8759-1:1998. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ISO 8759-3:2018 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 8759-3
First edition
2018-11
Agricultural tractors — Front-
mounted equipment —
Part 3:
Power take-off: General specifications
and location
Tracteurs agricoles — Équipement monté à l'avant —
Partie 3: Prise de force: Spécifications générales et emplacement
Reference number
©
ISO 2018
© ISO 2018
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
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
Contents Page
Foreword .iv
1 Scope . 1
2 Normative reference(s) . 1
3 Terms and definitions . 1
4 General specifications . 1
4.1 PTO type, rotational frequency . 1
4.2 Direction of rotation . 1
5 PTO location . 2
Bibliography . 3
Foreword
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any patent rights identified during the development of the document will be in the Introduction and/or
on th
...
NORME ISO
INTERNATIONALE 8759-3
Première édition
2018-11
Tracteurs agricoles — Équipement
monté à l'avant —
Partie 3:
Prise de force: Spécifications
générales et emplacement
Agricultural tractors — Front-mounted equipment —
Part 3: Power take-off: General specifications and location
Numéro de référence
©
ISO 2018
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2018
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: +41 22 749 01 11
Fax: +41 22 749 09 47
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse
ii © ISO 2018 – Tous droits réservés
Sommaire Page
Avant-propos .iv
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Spécifications générales . 1
4.1 Type de prise de force et fréquence de rotation . 1
4.2 Sens de rotation . 2
5 Emplacement de la prise de force . 2
Bibliographie . 3
Avant-propos
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nationaux de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est
en général confiée aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude
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concerne la normalisation électrotechnique.
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décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des différents
critères d'approbation requis pour les différents types de documents ISO. Le présent document a été
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