ISO/FDIS 6909

ISO/TC 39/SC 10/WG 1
Secretariat: SNV
Date: 2025-10-30
Machine tools — Safety — Press brakes
Machines outils — Sécurité des machines outils — Presses plieuses
FDIS stage
First edition
Date: 2024-11-04
FINAL DRAFT International Standard ISO/FDIS 6909:2024(E)

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
EmailE-mail: copyright@iso.org
Website: www.iso.org
Published in Switzerland
Contents
Foreword . vi
Introduction . vii
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 4
4 List of significant hazards . 18
5 Safety requirements and/or protective measures . 19
5.1 General . 19
5.2 Protection of mechanical hazards . 19
5.3 Control systems . 36
5.4 Mode of operation . 79
5.5 Consideration of basic design and other mechanical hazards . 80
5.6 Protection against non-mechanical hazard . 83
6 Verification of the safety requirements and/or protective measures . 87
7 Information for use . 94
7.1 Marking . 94
7.2 Instruction handbook . 95
Annex A (informative) Significant hazards, hazardous situations and protective measures . 98
Annex B (normative) Calculation of separation distances . 103
Annex C (normative) Overall system response time of the press brake stopping performance 107
Annex D (informative) Example of redundant and monitored hydraulic control circuits for a
down-stroking press brake . 108
Annex E (normative) Noise test code for press brakes . 111
Annex F (informative) Side safeguarding for press brakes with manually loaded and/or
unloaded . 118
Annex G (normative) Markings . 122
Annex H (normative) Laser actuated AOPD system tests . 124
Annex I (informative) Bending speed . 126
Annex J (informative) Press brakes technologies . 129
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of EU Directive 2006/42/EC aimed to be covered . 131
Annex ZB (informative) Relationship between this European Standard and the essential
requirements of Regulation (EU) 2023/1230 aimed to be covered. 138
Bibliography . 142

v
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 documents 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).
Field Code Changed
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.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
Field Code Changed
This document was prepared by Technical Committee ISO/TC 39, Machine tools, Subcommittee SC 10, Safety,
in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 143,
Machine tools - Safety, in accordance with the Agreement on technical cooperation between ISO and CEN
(Vienna Agreement).
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
Field Code Changed
vi
Introduction
This document is a type C standard as stated in ISO 12100:2010.
This document is of relevance, in particular, for the following stakeholder groups representing the market
players with regard to machinery safety:
— — machine manufacturers (small, medium and large enterprises);
— — health and safety bodies (regulators, accident prevention organizations, market surveillance etc.).
Others can be affected by the level of machinery safety achieved with the means of the document by the above-
mentioned stakeholder groups:
— — machine users/employers (small, medium and large enterprises);
— — machine users/employees (e.g. trade unions, organizations for people with special needs);
— — service providers, e.g.for example, for maintenance (small, medium and large enterprises);
— — consumers (in the case of machinery intended for use by consumers).
The above-mentioned stakeholder groups have been given the possibility to participate at the drafting process
of this document.
The machinery concerned and the extent to which hazards, hazardous situations or hazardous events are
covered are indicated in the Scope of this document.
When requirements of this type-C standard are different from those which are stated in type-A or type-B
standards, the requirements of this type-C standard take precedence over the requirements of the other
standards for machines that have been designed and built according to the requirements of this type-C
standard.
vii
Machine tools — Safety — Press brakes
1 Scope
This document specifies technical safety requirements and measures to be adopted by persons undertaking
the design, manufacture and supply of press brakes which are intended to work cold metal or material partly
of cold metal but which can be used in the same way to work other sheet materials (e.g. cardboard, plastic,
rubber, leather, etc.)) and also referred to as machines.
NOTE 1 The design of a machine includes the study of the machine itself, taking into account all phases of the “life” of
the machine mentioned in ISO 12100:2010, 5.4, and the drafting of the instructions related to all the above phases.
This document covers the following types of machines (see Annex JAnnex J):):
— — hydraulic press brakes;
— — hydraulic servo-drive press brakes;
— — screw servo-drive press brakes;
— — belt-spring servo-drive press brakes.
The requirements in this document take account of intended use, as defined in ISO 12100:2010, 3.23, as well
as reasonably foreseeable misuse, as defined in ISO 12100:2010, 3.24. This document presumes access to the
press brake from all directions, deals with all significant hazards during the various phases of the life of the
machine described in Clause 4Clause 4,, and specifies the safety measures for both the operator and other
exposed persons.
NOTE 2 All significant hazards means those identified or associated with press brakes at the time of the publication
of this document.
This document applies to press brakes which can function independently or in combination (e.g. two machines
in tandem or more) and can also be used as a guide for the design of press brakes which are intended to be
integrated in a manufacturing system.
This document deals with theall significant hazards, hazardous situations andor hazardous events relevant to
press brakes and ancillary devices (see Clause 4Clause 4).) when it is used as intended and under conditions
of misuse which are reasonably foreseeable by the manufacturer. This document specifies the safety
requirements for press brakes defined in Clause 3this clause.
This document does not cover press brakes which transmit energy to impart beam motion by using pneumatic
means or mechanical clutch or press brakes that use combination of technologies (e.g. combined hydraulic
and screw servo-drive press brake or combined hydraulic servo-drive and screw servo-drive press brake).
This document does not cover machines whose principal designed purpose is:
a) a) sheet folding by rotary action;
b) b) tube and pipe bending by rotary action;
c) c) roll bending.
This document does not cover hazards related to the use of press brakes in explosive atmospheres.
This document is not applicable to press brakes which are manufactured before the date of its publication.
This document does not cover the safety aspect of equipment for automatic workpiece loading and unloading
where provided. Guidance on how to take into account additional automatic loading and unloading equipment
can be found in ISO 11161:2007.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 3744:2010, Acoustics — Determination of sound power levels and sound energy levels of noise sources using
sound pressure — Engineering methods for an essentially free field over a reflecting plane
ISO 3746:2010, Acoustics — Determination of sound power levels and sound energy levels of noise sources using
sound pressure — Survey method using an enveloping measurement surface over a reflecting plane
ISO 4413:2010, Hydraulic fluid power — General rules and safety requirements for systems and their
components
ISO 4414:2010, Pneumatic fluid power — General rules and safety requirements for systems and their
components
ISO 4871:1996, Acoustics — Declaration and verification of noise emission values of machinery and equipment
ISO 5774:2023, Plastics hoses — Textile-reinforced types for compressed-air applications — Specification
ISO 11202:2010, Acoustics — Noise emitted by machinery and equipment — Determination of emission sound
pressure levels at a work station and at other specified positions appl
...