EN 12965:2019/FprA1

Tractors and machinery for agriculture and forestry - Power take-off (PTO) drive shafts and their guards - Safety

This document specifies safety requirements and their verification for the design and construction of power take-off (PTO) drive shafts and their guards linking a tractor or self-propelled machinery to the first fixed bearing of recipient machinery. It describes methods for the elimination or reduction of risks which need specific requirements including such risks arising from misuse, reasonably foreseeable by the manufacturer. It is applicable only to those PTO drive shafts and guards mechanically linked to the shaft by at least two bearings.
In addition, it specifies the type of information on safe working practices to be provided by the manufacturer.
This document does not deal with:
-   the guards totally covering, but not mechanically linked to, the PTO drive shaft;
-   the mechanical characteristics of PTO drive shafts, overrun devices and torque limiters;
-   general hazards which are dealt with in EN ISO 4254-1:2015 (see introduction).
Environmental aspects have not been considered in this document.
This document is not applicable to PTO drive shafts and their guards which are manufactured before the date of publication of this document by CEN.

Traktoren und Maschinen für die Land- und Forstwirtschaft - Gelenkwellen und ihre Schutzeinrichtungen - Sicherheit

Tracteurs et matériels agricoles et forestiers - Arbres de transmission à cardans de prise de force et leurs protecteurs - Sécurité

Traktorji ter kmetijski in gozdarski stroji - Priključne gredi in njihova zaščita - Varnost - Dopolnilo A1

General Information

• Status: Not Published
• Publication Date: 28-Jan-2025
• ICS: 65.060.01 - Agricultural machines and equipment in general
• Technical Committee: CEN/TC 144 - Tractors and machinery for agriculture and forestry
• Drafting Committee: CEN/TC 144/WG 1 - General safety requirements
• Current Stage: 5020 - Submission to Vote - Formal Approval
• Start Date: 03-Oct-2024
• Completion Date: 03-Oct-2024
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Ref Project: SIST EN 12965:2020/kFprA1:2024 - Tractors and machinery for agriculture and forestry - Power take-off (PTO) drive shafts and their guards - Safety

Relations

• Merged Into: EN 12965:2019+A1:2025 - Tractors and machinery for agriculture and forestry - Power take-off (PTO) drive shafts and their guards - Safety
• Effective Date: 04-Dec-2024
• Amends: EN 12965:2019 - Tractors and machinery for agriculture and forestry - Power take-off (PTO) drive shafts and their guards - Safety
• Effective Date: 27-Apr-2022

Overview

EN 12965:2019/FprA1 is a European standard developed by CEN that addresses the safety of power take-off (PTO) drive shafts and their guards used in tractors and machinery for agriculture and forestry. This standard specifies essential safety requirements for the design, construction, and verification of PTO drive shafts and their guards that mechanically link tractors or self-propelled machinery to recipient machinery.

The primary objective of EN 12965:2019/FprA1 is to eliminate or reduce risks related to PTO drive shafts, including those arising from misuse that manufacturers can reasonably foresee. The standard also outlines the type of safety information manufacturers must provide for safe working practices.

This standard is applicable only to PTO drive shafts and guards mechanically linked by at least two bearings and does not cover guards merely covering the PTO drive shaft without mechanical linkage, nor the mechanical characteristics of PTO shafts, torque limiters, or overrun devices.

Key Topics

• Safety Requirements: Defines mandatory safety features for PTO drive shafts and guards to minimize accident risks.
• Design and Construction: Specifies how PTO shafts and guards should be constructed to ensure user safety.
• Risk Reduction Methods: Addresses risk scenarios including misuse, providing manufacturers with guidelines for mitigation.
• Verification Procedures: Outlines testing and verification methods to confirm compliance with safety criteria.
• Guard Coverage: Specifies coverage requirements, such as guarding PTO shafts up to the end of inner and outer yokes on universal joints.
• Compatibility with Other Standards: References related standards like EN ISO 4254-1:2015 (general agricultural machinery safety) and EN ISO 13857:2019 (safety distances).
• Manufacturer Safety Information: Details the essential safety information and safe work practices manufacturers must communicate to end users.

Applications

EN 12965:2019/FprA1 is crucial for manufacturers, designers, and safety engineers involved in agriculture and forestry machinery that utilize PTO drive shafts. Practical applications include:

• Tractor and Machinery Manufacturing: Ensuring PTO components meet safety requirements to minimize injury risks.
• Safety Compliance and Certification: Facilitating compliance with EU machinery safety directives, specifically Directive 2006/42/EC.
• Product Development: Helping designers integrate safety features into PTO drive shafts and guards.
• Risk Assessment and Control: Providing a structured approach to identify and reduce hazards related to PTO operations.
• End-User Safety Guidance: Offering manufacturers a framework to provide adequate safety and operational instructions to users.

By adhering to this standard, stakeholders can improve workplace safety, reduce accidents caused by PTO shafts, and comply with regulatory requirements in the agricultural and forestry sectors.

Related Standards

• EN ISO 4254-1:2015 – Agricultural machinery safety – General requirements, addressing overarching safety hazards applicable to agricultural equipment.
• EN ISO 13857:2019 – Safety distances to prevent reaching hazard zones by upper and lower limbs, relevant for guarding considerations.
• EN ISO 5674:2009 – Testing criteria for guard acceptance to ensure guards meet durability and effectiveness standards.
• EN ISO 1140:2021 – Specifications for polyamide fibre ropes referenced for testing components related to PTO shafts.
• EU Machinery Directive 2006/42/EC – Sets essential health and safety requirements for machinery placed on the European market, which EN 12965 supports directly.

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By understanding and implementing EN 12965:2019/FprA1, agricultural and forestry machinery manufacturers enhance safety, comply with European regulations, and promote responsible use of PTO drive shafts, significantly contributing to operator protection and equipment reliability.

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 12965:2020/oprA1:2023
01-junij-2023
Traktorji ter kmetijski in gozdarski stroji - Priključne gredi in njihova zaščita -
Varnost - Dopolnilo A1
Tractors and machinery for agriculture and forestry - Power take-off (PTO) drive shafts
and their guards - Safety
Traktoren und Maschinen für die Land- und Forstwirtschaft - Gelenkwellen und ihre
Schutzeinrichtungen - Sicherheit
Tracteurs et matériels agricoles et forestiers - Arbres de transmission à cardans de prise
de force et leurs protecteurs - Sécurité
Ta slovenski standard je istoveten z: EN 12965:2019/prA1
ICS:
65.060.01 Kmetijski stroji in oprema na Agricultural machines and
splošno equipment in general
SIST EN 12965:2020/oprA1:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

SIST EN 12965:2020/oprA1:2023
SIST EN 12965:2020/oprA1:2023
DRAFT
EUROPEAN STANDARD
EN 12965:2019
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
April 2023
ICS 65.060.01
English Version
Tractors and machinery for agriculture and forestry -
Power take-off (PTO) drive shafts and their guards - Safety
Tracteurs et matériels agricoles et forestiers - Arbres Traktoren und Maschinen für die Land- und
de transmission à cardans de prise de force et leurs Forstwirtschaft - Gelenkwellen und ihre
protecteurs - Sécurité Schutzeinrichtungen - Sicherheit
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 144.

This draft amendment A1, if approved, will modify the European Standard EN 12965:2019. If this draft becomes an amendment,
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant national standard without any alteration.

This draft amendment was established by CEN 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12965:2019/prA1:2023 E
worldwide for CEN national Members.

SIST EN 12965:2020/oprA1:2023
EN 12965:2019/prA1:2023 (E)
Contents Page
European foreword . 3
1 Modification to Clause 2, “Normative references” . 4
2 Modification to 4.1, “General requirements” . 4
3 Modifications to 4.2.1, “Universal joint” . 4
4 Modification to 4.2.2, “Wide-angle universal joint” . 4
5 Modification to 4.4.1, “General” . 5
6 Modification to 4.5.1.1, “Lubrication access” . 5
7 Modification to 5.1, “General” . 5
8 Modification to 5.3.3, “Test sample”. 5
9 Modification to B.1, “General” . 5
10 Modification to Annex ZA (informative), “Relationship between this European Standards
and the Essential Requirements of EU Directive 2006/42/EC aimed to be covered” . 5

SIST EN 12965:2020/oprA1:2023
EN 12965:2019/prA1:2023 (E)
European foreword
This document (EN 12965:2019/prA1:2023) has been prepared by Technical Committee CEN/TC 144
“Tractors and machinery for agriculture and forestry”, the secretariat of which is held by AFNOR.
This document
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