oSIST prEN ISO 5674:2022
(Main)Tractors and machinery for agriculture and forestry - Guards for power take-off (PTO) drive-shafts - Strength and wear tests and acceptance criteria (ISO/DIS 5674:2022)
Tractors and machinery for agriculture and forestry - Guards for power take-off (PTO) drive-shafts - Strength and wear tests and acceptance criteria (ISO/DIS 5674:2022)
Traktoren und land- und forstwirtschaftliche Maschinen - Schutzeinrichtungen für Gelenkwellen - Festigkeits- und Verschleißprüfungen und Annahmekriterien (ISO/DIS 5674:2022)
Diese Internationale Norm beschreibt Laborprüfungen zur Bestimmung von Festigkeit und Verschleiß von Schutzeinrichtungen für Gelenkwellen an Traktoren und Maschinen in der Land- und Forstwirtschaft und deren Annahmekriterien. Die Anwendung in Kombination mit ISO 5673 1:2005 ist beabsichtigt.
Sie gilt für die Prüfung von Gelenkwellenschutzeinrichtungen und ihren Rückhalteeinrichtungen. Sie gilt nicht für die Prüfung von Schutzeinrichtungen, die zur Benutzung als Stufen gestaltet und ausgelegt sind.
Tracteurs et matériels agricoles et forestiers - Protecteurs d'arbres de transmission à cardans de prise de force (p.d.f) - Essais de résistance mécanique et d'usure et critères d'acceptation (ISO/DIS 5674:2022)
Traktorji ter kmetijski in gozdarski stroji - Ščitniki za priključne gredi - Preskusi trdnosti in obrabe ter merila sprejemljivosti (ISO/DIS 5674:2022)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN ISO 5674:2022
01-julij-2022
Traktorji ter kmetijski in gozdarski stroji - Ščitniki za priključne gredi - Preskusi
trdnosti in obrabe ter merila sprejemljivosti (ISO/DIS 5674:2022)
Tractors and machinery for agriculture and forestry - Guards for power take-off (PTO)
drive-shafts - Strength and wear tests and acceptance criteria (ISO/DIS 5674:2022)
Traktoren und land- und forstwirtschaftliche Maschinen - Schutzeinrichtungen für
Gelenkwellen - Festigkeits- und Verschleißprüfungen und Annahmekriterien (ISO/DIS
5674:2022)
Tracteurs et matériels agricoles et forestiers - Protecteurs d'arbres de transmission à
cardans de prise de force (p.d.f) - Essais de résistance mécanique et d'usure et critères
d'acceptation (ISO/DIS 5674:2022)
Ta slovenski standard je istoveten z: prEN ISO 5674
ICS:
65.060.01 Kmetijski stroji in oprema na Agricultural machines and
splošno equipment in general
oSIST prEN ISO 5674:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 5674:2022
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oSIST prEN ISO 5674:2022
DRAFT INTERNATIONAL STANDARD
ISO/DIS 5674
ISO/TC 23/SC 2 Secretariat: ANSI
Voting begins on: Voting terminates on:
2022-05-03 2022-07-26
Tractors and machinery for agriculture and forestry —
Guards for power take-off (PTO) drive-shafts — Strength
and wear tests and acceptance criteria
Tracteurs et matériels agricoles et forestiers — Protecteurs d'arbres de transmission à cardans de prise de
force — Essais de résistance mécanique et d'usure et critères d'acceptation
ICS: 65.060.01
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 5674:2022(E)
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. © ISO 2022
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oSIST prEN ISO 5674:2022
ISO/DIS 5674:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022
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
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oSIST prEN ISO 5674:2022
ISO/DIS 5674:2022(E)
Contents Page
Foreword .iv
European Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General test conditions .2
4.1 Guard . 2
4.2 Other conditions . 2
5 Test equipment .2
5.1 General . 2
5.2 Test parameters . 2
5.2.1 Measuring accuracy . . 2
5.2.2 Potable and salt water . 3
5.2.3 Test dust . 3
6 Tests . 3
6.1 General . 3
6.2 Wear test . 4
6.3 Bearing corrosion test (Perform only if the guard has bearings running in contact
with the PTO drive shaft). 4
6.4 Strength tests . 4
6.4.1 Dynamic radial loading test at defined temperature limits . 4
6.4.2 Test on guard component covering joints . 5
6.4.3 Test on tubes . 5
6.4.4 Dynamic swivel test . 5
6.4.5 Static axial loading test at ambient temperature . 7
6.4.6 Dynamic axial loading test of the bearings at ambient temperature . 7
6.5 Tests at sub-zero temperature . 7
6.5.1 Impact test at sub-zero temperatures . 7
6.5.2 Static axial loading test at sub-zero temperatures . 8
6.6 Restraining means test at ambient temperature . 9
6.6.1 Conventional means of attachment . 9
6.6.2 Other restraining means . 9
7 Final acceptance criteria . .10
8 Test report .11
Annex A (normative) Test schedule .12
Annex B (normative) UV test for plastic guards .16
Annex C (informative) Typical test report .17
Annex D (informative) Novel design guard and restraining systems tests .21
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered .25
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oSIST prEN ISO 5674:2022
ISO/DIS 5674:2022(E)
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).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
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.
This document was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture
and forestry, Subcommittee SC 2, Common tests.
This third edition cancels and replaces the second edition (ISO 5674:2004), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— The wording of Annex B line 8 has been clarified regarding “spectral irradiance”
— The Type 4 Power Take-Off from ISO 500-1:2014 has been added.
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.
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oSIST prEN ISO 5674:2022
ISO/DIS 5674:2022(E)
European Foreword
NOTE European Foreword is not included in the final ISO publication.
This document (EN ISO 5674:YEAR) 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 European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by Date1 and conflicting national standards shall be
withdrawn at the latest by Date2.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
This third edition cancels and replaces the second edition (ISO 5674:2004), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— The wording of Annex B line 8 has been clarified regarding “spectral irradiance”
— The Type 4 Power Take-Off from ISO 500-1:2014 has been added.
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this
document.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,
Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
the United Kingdom.
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oSIST prEN ISO 5674:2022
ISO/DIS 5674:2022(E)
Introduction
This document is a type C standard as stated in ISO 12100.
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 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.
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oSIST prEN ISO 5674:2022
DRAFT INTERNATIONAL STANDARD ISO/DIS 5674:2022(E)
Tractors and machinery for agriculture and forestry —
Guards for power take-off (PTO) drive-shafts — Strength
and wear tests and acceptance criteria
1 Scope
This International Standard specifies laboratory tests for determining the strength and wear resistance
of guards for power take-off (PTO) drive- shafts on tractors and machinery used in agriculture and
forestry, and their acceptance criteria. It is intended to be used in combination with ISO 5673-1:2005.
It is applicable to the testing of PTO drive- shaft guards and their restraining means. It is not applicable
to the testing of guards designed and constructed to be used as steps.
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.
E N 20105 -A02: 19 9 4, Textiles - Tests for colour fastness - Part A02: Grey scale for assessing change in colour
( IS O 105 -A02: 1993)
ISO 500-1:2014, Agricultural tractors — Rear-mounted power take-off types 1, 2, 3 and 4 — Part 1: General
specifications, safety requirements, dimensions for master shield and clearance zone
ISO 500-2:2004, Agricultural tractors — Rear-mounted power take-off types 1, 2 and 3 — Part 2: Narrow-
track tractors, dimensions for master shield and clearance zone
ISO 500-3:2014, Agricultural tractors — Rear-mounted power take-off types 1, 2, 3 and 4 — Part 3: Main
PTO dimensions and spline dimensions, location of PTO
EN ISO 4892-1:2016, Plastics - Methods of exposure to laboratory light sources - Part 1: General guidance
(ISO 4892-1:2016)
EN ISO 4892-2:2013, A1: 2021, Plastics - Methods of exposure to laboratory light sources - Part 2: Xenon-arc
lamps - Amendment 1: Classification of daylight filters (ISO 4892-2:2013/Amd 1:2021)
ISO 5673-1:2005, Agricultural tractors and machinery — Power take-off drive shafts and power-input
connection — Part 1: General manufacturing and safety requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5673-1:2005 and the following
apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
ambient temperature
any temperature between 5 °C and 35 °C
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oSIST prEN ISO 5674:2022
ISO/DIS 5674:2022(E)
4 General test conditions
4.1 Guard
4.1.1 The guard shall be representative of a production model and be within the tolerances specified
for the guard. The results obtained from the sample can be used to certify guards of shorter or longer
lengths, provided the basic design remains the same. When a guard is designed for use with several
drive shaft types, a representative selection of shaft and guard combinations shall be tested.
4.1.2 If the guard is made of plastic material (or any other material susceptible to degradation by UV
radiation), it shall be certified by the manufacturer to be resistant to degradation from UV radiation
under an appropriate, recognized method. See Annex B for an example.
4.1.3 During testing, all operating and maintenance instructions specified for the shaft and guard
shall be complied with, except where specifically mentioned by this International Standard.
4.1.4 The guard shall be tested in conjunction with a PTO drive shaft of between 900 mm and
1 010 mm closed length for which it is intended. The same guard shall be used throughout all the tests.
4.2 Other conditions
4.2.1 Where specified in this International Standard that the PTO drive shaft shall be rotating, its
rotational frequency shall be 1 300 r/min for PTO drive shafts designed to be used for Type 4 PTO and
1 000 r/min for all other PTO drive shafts.
4.2.2 All tests shall be carried out in accordance with the schedule and in the sequence given in
Annex A.
5 Test equipment
5.1 General
5.1.1 Wear test equipment shall be capable of holding the PTO drive shaft and rotating it at a
frequency of 1 300 r/min for PTO drive shafts designed to be used for Type 4 PTO and 1 000 r/min for
all other PTO drive shafts.
The shafts and guards shall be mounted as specified for operational use and only fixed by their
designated restraining device. The fixing points shall be in accordance with ISO 500-1:2014 and the
equivalent machine standard unless otherwise specified for that type of shaft. The size and shape of the
wear test equipment shall be such that an even test environment is maintained, e.g. heat and the dust
specified in 5.2.3.
5.1.2 Strength test equipment shall allow the accurate application of known loads at controlled
temperatures and at the required frequency of rotation within the tolerances stipulated in Table 1.
5.2 Test parameters
5.2.1 Measuring accuracy
All measurements shall be within the tolerances given in Table 1 except where otherwise required by
this International Standard.
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oSIST prEN ISO 5674:2022
ISO/DIS 5674:2022(E)
Table 1 — Measuring accuracy
Measuring accuracy Test tolerance
Rotational speed ± 0,5 % + 5 %
Temperature ± 1,0 °C ± 5 %
Time ± 0,2 % + 5 %
Length ± 0,5 % ± 2 %
Force ± 1,0 % + 2 %
5.2.2 Potable and salt water
5.2.2.1 When a test requires the use of water, it shall be potable (i.e. drinking water).
5.2.2.2 When a test requires a saltwater solution, it shall be prepared by dissolving sodium chloride
in water to produce a concentration of 50 g/l ± 5 g/l. The sodium chloride shall be white and shall give
a colourless solution in water. It shall be substantially free from copper and nickel, and shall not contain
more than 0,1 % of sodium iodine and not more than 0,4 % of total impurities calculated for dry salt.
5.2.3 Test dust
5.2.3.1 The test dust shall consist of a mixture composed of equal parts, by mass, of organic and
mineral dust.
5.2.3.2 The organic dust shall be ground lucerne with a maximum percentage of 12 % water and with
3
a maximum particle size of 2 mm. An environment of 0,5 kg/m shall be maintained.
5.2.3.3 The mineral dust shall be a simple phosphated fertilizer, and shall contain as principal
elements silicophosphates of calcium having the following characteristics:
— minimum content: 9 % of P O total (± 3 %);
2 5
— other: at least 75 % of the P O total declared, soluble in a 2 % concentration of citric acid.
2 5
See Table 2.
Table 2 — Mineral dust specifications
Mesh opening of sieve Minimum fineness of grinding, after sifting
mm %
> 0,063 —
> 0,125 —
> 0,16 75
> 0,63 96
6 Tests
6.1 General
After each test, note and record the condition of the guard, with particular reference to any fractures,
permanent deformation or detachment of components which could contribute to the deterioration of
the guard.
For the test sequence, see Annex A.
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oSIST prEN ISO 5674:2022
ISO/DIS 5674:2022(E)
The PTO drive shaft guard is deemed to have passed the test if
— the guard has no holes or deformation which leave the shaft unprotected,
— the guard has no breakage, crack or part separation, and
— the guard freely rotates separately from the PTO drive shaft when the PTO drive shaft is rotated.
6.2 Wear test
6.2.1 For the whole test, the shaft shall be rotating and, while rotating, shall be repeatedly extended
to its extended length (see ISO 5673-1:2005), held for 1 min, then returned and held at its closed length
(see ISO 5673-1:2005) for 4 min. This shall be repeated for the duration of the test period. See Annex A
for the test sequence.
Guards shall only be fixed using the normal fixing and restraining system as specified by the
manufacturer.
Before the start and at the end of each of the wear test cycles, measure the torque required for the
immobilization of any part of the guard, having first run the guard for 1 min. The torque measured
shall not exceed 2,5 N∙m per bearing race up to a maximum of 10 N∙m per complete drive shaft.
6.2.2 At the start and at the end of the wear test, measure the running torque that needs to be applied
to each guard tube in order to immobilize it when the shaft is rotating at 1 300 r/min for PTO drive
shafts designed to be used for Type 4 PTO and 1 000 r/min for all other PTO drive shafts.
3
6.2.3 For wear tests with dust, the test atmosphere shall contain 0,5 kg/m of dust according to 5.2.3.
6.3 Bearing corrosion test (Perform only if the guard has bearings running in contact with
the PTO drive shaft)
Taking the shaft with the bearing in place, but with the rest of the guard removed, and supported
horizontally and stationary, apply salt water (see 5.2.2.2) to all bearings for the first 5 min of every
hour for 48 h, then leave to dry in free air (i.e. 48 cycles consisting of salt water application for 5 min of
each cycle and drying in free air for the other 55 min of each cycle).
The salt water may be applied by spraying, flooding or any other suitable method, provided that it at
least flows over all the metallic parts of the bearing system at some stage during the 5 min. It might be
necessary to rotate the shaft during the process to ensure good coverage, but this should only be done
very slowly so as not to throw the liquid off. The application of the salt water shall be carried out such
that salt solution corrosion of its inner tubes is avoided.
6.4 Strength tests
6.4.1 Dynamic radial loading test at defined temperature limits
Subject the guarded drive shaft to a radial loading test at ambient temperature after each complete
cycle of the wear test (See A.1 and D.9).
The PTO drive shaft guard is deemed to have passed the test if
— the guard has no holes or deformation which leave the shaft unprotected, and
— the guard has no breakage, crack or part separation.
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oSIST prEN ISO 5674:2022
ISO/DIS 5674:2022(E)
6.4.2 Test on guard component covering joints
Rotate the PTO drive shaft and, using a smooth, flat, 100 mm wide wooden beam, apply a direct force of
500 N to the cone of the universal joint for 60 s, in accordance with Annex A, perpendicularly to the PTO
drive shaft.
To avoid excessive vibration, the wooden beam shall be supported by a 20 mm thick rubber backing
of approximately A 20 Shore hardness. When applying the load, care shall be taken to ensure that no
impact load is applied.
Test over every joint.
The PTO drive shaft guard is deemed to have passed the test if
— the guard has no holes or deformation which leave the shaft unprotected, and
— the guard has no breakage, crack or part separation.
6.4.3 Test on tubes
Support the guarded PTO drive shaft in a horizontal, straight line by its usual end connections, at its
extended length (as specified by the manufacturer).
Rotate the PTO drive shaft and, using a smooth, flat, 100 mm wide wooden beam, apply a direct load of
500 N for 60 s perpendicularly to the shaft guard at its midpoint, in accordance with Annex A.
Record whether any part of the rotating shaft was exposed during or after the test that would allow a
30 mm probe to come into contact with that rotating part.
The PTO drive shaft guard is deemed to have passed the test if
— the guard has no holes or deformation which leave the shaft unprotected, and
— the guard has no breakage, crack or part separation.
6.4.4 Dynamic swivel test
The dimensions of the cone guarding the universal joints shall be such that the cone will not be
damaged by contact with the master shield (see ISO 500-1:2014), when the drive shaft and guard are
at the maximum allowable angle and while the shaft is rotating as specified by the manufacturer in the
instruction handbook.
If the guard cone does not come into contact with the master shield or any part of the drive shaft when
the drive shaft is at the specified maximum rotating angular position, this test need not be carried out.
To verify this requirement, perform the following procedure, with the PTO drive shaft rotating at
1 300 r/min for PTO drive shafts designed to be used for Type 4 PTO and 1 000 r/min for all other PTO
drive shafts.
a) Test the drive shafts with a nominal torque rating
...
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