SIST EN ISO 11393-1:2018

SLOVENSKI STANDARD
SIST EN ISO 11393-1:2018
01-december-2018
1DGRPHãþD
SIST EN 381-1:1996
9DURYDOQDREOHND]DXSRUDEQLNHURþQLKYHULåQLKåDJGHO2SUHPD]D
SUHVNXãDQMHRGSRUQRVWLSURWLXUH]X]YHULåQRåDJR,62
Protective clothing for users of hand-held chainsaws - Part 1: Test rig for testing
resistance to cutting by a chainsaw (ISO 11393-1:2018)
Schutzkleidung für die Benutzer von handgeführten Kettensägen - Teil 1: Prüfstand zur
Prüfung des Widerstandes gegen Kettensägen-Schnitte (ISO 11393-1:2018)
Vêtements de protection pour utilisateurs de scies à chaîne tenues à la main - Partie 1:
Banc d'essai à volant d’inertie pour les essais de résistance à la coupure par une scie à
chaîne (ISO 11393-1:2018)
Ta slovenski standard je istoveten z: EN ISO 11393-1:2018
ICS:
13.340.10 Varovalna obleka Protective clothing
SIST EN ISO 11393-1:2018 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN ISO 11393-1:2018

---------------------- Page: 2 ----------------------

SIST EN ISO 11393-1:2018


EN ISO 11393-1
EUROPEAN STANDARD

NORME EUROPÉENNE

October 2018
EUROPÄISCHE NORM
ICS 13.340.10 Supersedes EN 381-1:1993
English Version

Protective clothing for users of hand-held chainsaws - Part
1: Test rig for testing resistance to cutting by a chainsaw
(ISO 11393-1:2018)
Vêtements de protection pour utilisateurs de scies à Schutzkleidung für die Benutzer von handgeführten
chaîne tenues à la main - Partie 1: Banc d'essai à volant Kettensägen - Teil 1: Prüfstand zur Prüfung des
d'inertie pour les essais de résistance à la coupure par Widerstandes gegen Kettensägen-Schnitte (ISO 11393-
une scie à chaîne (ISO 11393-1:2018) 1:2018)
This European Standard was approved by CEN on 12 August 2018.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

This European Standard exists 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, 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 United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11393-1:2018 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------

SIST EN ISO 11393-1:2018
EN ISO 11393-1:2018 (E)
Contents Page
European foreword . 3

2

---------------------- Page: 4 ----------------------

SIST EN ISO 11393-1:2018
EN ISO 11393-1:2018 (E)
European foreword
This document (EN ISO 11393-1:2018) has been prepared by Technical Committee ISO/TC 94
"Personal safety -- Personal protective equipment" in collaboration with Technical Committee CEN/TC
162 “Protective clothing including hand and arm protection and lifejackets” the secretariat of which is
held by DIN.
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 April 2019, and conflicting national standards shall be
withdrawn at the latest by April 2019.
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 supersedes EN 381-1:1993.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
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.
Endorsement notice
The text of ISO 11393-1:2018 has been approved by CEN as EN ISO 11393-1:2018 without any
modification.


3

---------------------- Page: 5 ----------------------

SIST EN ISO 11393-1:2018

---------------------- Page: 6 ----------------------

SIST EN ISO 11393-1:2018
INTERNATIONAL ISO
STANDARD 11393-1
Second edition
2018-09
Protective clothing for users of hand-
held chainsaws —
Part 1:
Test rig for testing resistance to
cutting by a chainsaw
Vêtements de protection pour utilisateurs de scies à chaîne tenues à
la main —
Partie 1: Banc d'essai à volant d’inertie pour les essais de résistance à
la coupure par une scie à chaîne
Reference number
ISO 11393-1:2018(E)
©
ISO 2018

---------------------- Page: 7 ----------------------

SIST EN ISO 11393-1:2018
ISO 11393-1:2018(E)

COPYRIGHT PROTECTED DOCUMENT
© 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

---------------------- Page: 8 ----------------------

SIST EN ISO 11393-1:2018
ISO 11393-1:2018(E)

Contents Page
Foreword .iv
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principles . 2
5 Test rig . 3
5.1 General . 3
5.2 Power unit and connecting device . 3
5.3 Saw unit . 4
5.3.1 General. 4
5.3.2 Components of saw unit . 4
5.3.3 Release system . 6
5.3.4 Instrumentation . 6
5.3.5 Fixture for saw unit . 7
5.4 Calibration pad mount. 7
5.5 Calibration pad fixture device . 8
6 Calibration materials . 8
7 Calibration of the test rig . 9
7.1 General . 9
7.2 Starting up the rig . 9
7.3 Chain stopping time . 9
7.4 Measurement of chain speed . 9
7.5 Calibration with clogging material (pads) . 9
7.5.1 Conditioning of the saw chain . 9
7.5.2 Attachment of calibration pad . .10
7.5.3 Cut test .10
Annex A (normative) Supplementary information on calibration pads .11
Annex B (normative) Testing of calibration pads at 19 m/s and 21 m/s .12
Annex C (informative) Method for checking the moment of inertia around pivot .13
© ISO 2018 – All rights reserved iii

---------------------- Page: 9 ----------------------

SIST EN ISO 11393-1:2018
ISO 11393-1:2018(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 on 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 the following
URL: www .iso .org/iso/foreword .html.
This document was prepared by the European Committee for Standardization (CEN) Technical
Committee CEN/TC 162, Protective clothing including hand and arm protection and lifejackets, in
collaboration with ISO Technical Committee TC 94, Personal safety — Personal protective equipment,
Subcommittee SC 13, Protective clothing, in accordance with the agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 11393-1:1998), which has been technically
revised. The main changes compared to the previous edition are as follows:
— the figures have been redrawn;
— measurement tolerances have been added;
— in the Introduction, the term “hand-held chainsaws primarily constructed for cutting wood” has
been added;
— in the Scope, the definition has been specified;
— the normative references have been updated;
— the terms and definitions have been revised and updated;
— in Clause 4, the description has been revised;
— in 5.2, the definition has been specified;
— in 5.3, the definition has been specified, a method for measuring the chain tension is added, the
description of the saw chain has been updated and the definition of the release system has been
revised;
— in 5.4, the description has been specified and the description of the foam has been updated;
— in 7.5, the description has been specified and the definition of the chain has been updated;
iv © ISO 2018 – All rights reserved

---------------------- Page: 10 ----------------------

SIST EN ISO 11393-1:2018
ISO 11393-1:2018(E)

— in Annex A, the description has been revised;
— the previous Annex B has been removed and replaced with a new Annex B;
— a new Annex C has been added.
A list of all parts in the ISO 11393 series can be found on the ISO website.
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.
© ISO 2018 – All rights reserved v

---------------------- Page: 11 ----------------------

SIST EN ISO 11393-1:2018
ISO 11393-1:2018(E)

Introduction
This document forms part of a series concerned with personal protective equipment (PPE) designed
to protect against the risks arising from the use of hand-held chainsaws primarily constructed for
cutting wood.
The portable hand-held powered chainsaws are normally operated by electric or internal combustion
engines. Experience has shown that the specification of the fuel operated engine is difficult. In order
to be able to control the testing parameters, these problems have been eliminated by selecting the
flywheel method described in this document.
No PPE can ensure a 100 % protection against cutting from a hand-held chainsaw. Nevertheless,
experience has shown that it is possible to design PPE that offers a certain degree of protection.
Different functional principles may be applied in order to give protection. These include:
a) chain slipping: on contact the chain does not cut the material;
b) clogging: fibres are drawn by the chain into the drive sprocket and block chain movement;
c) chain braking: fibres have a high resistance to cutting and absorb rotational energy, thereby
reducing the chain speed.
Often more than one principle is applied.
vi © ISO 2018 – All rights reserved

---------------------- Page: 12 ----------------------

SIST EN ISO 11393-1:2018
INTERNATIONAL STANDARD ISO 11393-1:2018(E)
Protective clothing for users of hand-held chainsaws —
Part 1:
Test rig for testing resistance to cutting by a chainsaw
1 Scope
This document specifies the test rig for assessing the resistance to cutting of protective clothing,
footwear and gloves by hand-held chainsaws. It also describes the calibration procedure.
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 1302, Geometrical Product Specifications (GPS) — Indication of surface texture in technical product
documentation
ISO 2060, Textiles — Yarn from packages — Determination of linear density (mass per unit length) by the
skein method
ISO 3386-1, Polymeric materials, cellular flexible — Determination of stress-strain characteristics in
compression — Part 1: Low-density materials
ISO 3801, Textiles — Woven fabrics — Determination of mass per unit length and mass per unit area
ISO 4915, Textiles — Stitch types — Classification and terminology
ISO 7211-2, Textiles — Woven fabrics — Construction — Methods of analysis — Part 2: Determination of
number of threads per unit length
ISO 11393-2, Protective clothing for users of hand-held chainsaws — Part 2: Performance requirements
and test methods for leg protectors
ISO 11393-3, Protective clothing for users of hand-held chainsaws — Part 3: Test methods for footwear
ISO 11393-4, Protective clothing for users of hand-held chainsaws — Part 4: Performance requirements
and test methods for protective gloves
ISO 11393-5, Protective clothing for users of hand-held chainsaws — Part 5: Performance requirements
and test methods for protective gaiters
ISO 11393-6, Protective clothing for users of hand-held chainsaws — Part 6: Performance requirements
and test methods for upper body protectors
ISO 17249, Safety footwear with resistance to chain saw cutting
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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
© ISO 2018 – All rights reserved 1

---------------------- Page: 13 ----------------------

SIST EN ISO 11393-1:2018
ISO 11393-1:2018(E)

— IEC Electropedia: available at http: //www .electropedia .org/
3.1
chain braking
effect whereby fibres or other materials of the personal protective equipment slow down the speed of
the saw chain
3.2
chain slipping
protective effect whereby the saw chain slides over the surface of the protective material without
cutting it
3.3
chain stopping time
period of time taken for the saw chain to decelerate from a specified speed to a complete stop once the
power has been disconnected
3.4
chainsaw
portable powered saw with teeth on a saw chain
3.5
clogging
effect whereby fibres, yarns or other materials are drawn by the saw chain into the saw unit, thereby
stopping the movement of the saw chain
3.6
cut-through
any visible change on the underside of the innermost layer of the test sample caused by the saw chain
3.7
cutting line
tangent to the curve made by teeth of the saw chain at the point where it is in contact with a test
specimen
3.8
free-running stopping time
time for the flywheel to come to a complete stop once the power has been disconnected when there is
no chain fitted to the guide bar
3.9
resistance to cutting
various ways in which protective material prevents cutting or decelerate the chain of a chainsaw (3.4)
Note 1 to entry: It is measured by applying a moving saw chain with a certain chain speed and energy and
studying whether the chain cuts through.
4 Principles
The test rig described in this document has been designed to apply a moving saw chain to a test sample
in such a way that both the speed of the chain and the amount of kinetic energy available for cutting are
controlled.
This is achieved by ensuring that the chain is not under power at the moment of test. The equipment is
designed such that the chain is moving solely under the influence of its own momentum, together with
that of a flywheel and rotating parts of known inertia to which it is coupled.
The result of the test is then reported as to whether or not the sample shows a cut-through at the
test speed.
2 © ISO 2018 – All rights reserved

---------------------- Page: 14 ----------------------

SIST EN ISO 11393-1:2018
ISO 11393-1:2018(E)

5 Test rig
5.1 General
The test rig consists of the following major components:
— a power unit and a connecting device that transfers rotational energy to the saw unit;
— a saw unit with a defined moment of inertia including shaft, flywheel, sprocket, chain and guide bar;
— fixture for saw unit;
— test piece mounts for samples;
— instrumentation.
Fit guards to protect users from flying debris and broken chains.
The general arrangement of the test rig is shown in Figure 1.
Key
1 mounting for sprocket bar 5 sprocket
2 chain 6 pivot
3 guide bar 7 horizontal plane
4 sample mount
Figure 1 — General arrangement of test rig
5.2 Power unit and connecting device
The power unit shall be able to drive the saw chain up to a chain speed of at least 21 m/s. For testing
class 2 products, the power unit shall be capable of driving the saw chain at a speed of at least 24 m/s. For
class 3 products, the power unit shall be capable of driving the saw chain at a speed of at least 28 m/s.
For testing purposes, it is convenient that the test rig shall also be able to drive the chain at speeds as
required by ISO 11393-2, ISO 11393-3, ISO 11393-4, ISO 11393-5, ISO 11393-6 and ISO 17249. Currently,
the maximum speed specified in the ISO 11393-series and in ISO 17249 is 28 m/s (class 3).
It shall be possible to separate the power from the saw unit, see Clause 4. The separation of the powered
drive unit from the saw unit shall not affect the moment of inertia of the sprocket/flywheel assembly
and the moving chain and it shall not affect the falling action around the pivot.
In order to conduct a test, the chain is first driven up to the required speed by means of any convenient
motor. At the moment of test, the motor is then physically separated from the chain and flywheel or the
© ISO 2018 – All rights reserved 3

---------------------- Page: 15 ----------------------

SIST EN ISO 11393-1:2018
ISO 11393-1:2018(E)

power is disconnected from the rotating parts of the saw unit excluding the sprocket. The moment of
inertia shall still fulfil the requirements of 5.3.2.3. Simultaneously, the chain is allowed to pivot down
from a minimal height onto the test sample. The chain subsequently continues to move (and under
normal circumstances, to cut into the sample) until all of its kinetic energy has been dissipated and the
chain stops.
5.3 Saw unit
5.3.1 General
The saw unit shall be able to turn freely in the vertical plane around the horizontal pivot at least in the
range 20 mm upward and 100 mm downward, measured at 360 mm from the pivot.
Certain stops may be included in order to prevent the saw chain damaging the test piece mount.
The moment of inertia of the saw unit, which means all parts turning around the pivot, shall be
2
(0,30 ± 0,05) kgm . The moment of inertia shall be calculated from the construction programme or
measured. A measuring method is described in Annex C. Ensure that no other rotating parts around the
output shaft than the defined rotating inertia will affect the falling action around pivot.
5.3.2 Components of saw unit
5.3.2.1 Guide bar
The guide bar is symmetrical 11-tooth sprocket nosed, with a nominal groove width of 1,50 mm and a
1)
nominal length of 330 mm (13”) .
The lateral stiffness of the saw unit and guide bar shall be measured at the centre of the nose wheel
of the bar, mounted in the saw unit of the test rig. Apply a load cell at the centre of the nose wheel and
adapt equipment for measuring the movement. Pull the guide bar with the load cell until a force of
(50 ± 2) N is reached. The deflection of the guide bar shall be less than 10,0 mm.
The chain tension shall be adjustable. The chain tension shall be measured with every new chain. This
measurement shall be done after having reached the chain stopping time of (4 ± 0,2) s.
The method for measuring chain tension is as follows.
a) Position a suitable clamp on the link on the uppermost edge of the guide bar immediately over
the cutting point for calibration pads (see 5.3.5). Gently lift the guide bar vertically until its own
gravitational force (15 N) is supported entirely by the one link. Measure the vertical deflection of
the chain from the edge of the guide bar and record the deflection to the nearest millimetre.
b) Release the force and remove the clamp from the link. Move the chain along by approximately
14 links and repeat step a).
c) Repeat step b) twice more until four measurements of deflection at different parts of the chain
have been recorded.
d) The range between the highest and the lowest measurement of deflection should not be more than
2 mm to ensure that the deflection at different parts of the chain is constant.
e) If this test fails, repeat both procedures until the required values are fulfilled. If this is impossible,
check the saw unit.
1) A suitable guide bar available on the market is Article no. 138SLBK095 — Blount Oregon. This is an example of
a suitable product available commercially. This information is given for the convenience of users of this document
and does not constitute an endorsement by ISO of this product.
4 © ISO 2018 – All rights reserved

---------------------- Page: 16 ----------------------

SIST EN ISO 11393-1:2018
ISO 11393-1:2018(E)

5.3.2.2 Chain drive sprocket
2)
Use a 7-tooth rim sprocket .
The dimensions of the sprocket surround shall be as indicated in Figure 2.
The machine shall not be fitted with a chain drive sprocket cover.
This requirement does not preclude a guard to protect the operator. Such a guard shall not interfere
with the testing.
Dimensions in millimetres
Key
√ surface roughness in accordance with ISO 1302
Figure 2 — Dimensions of sprocket surround
5.3.2.3 Moment of inertia of rotating parts
The moment of inertia of rotating parts around the output shaft, including the shaft, flywheel and
−3 2
all rotating devices, but excluding the chain and sprocket, shall be [(0,47 ± 0,015) × 10 ] kgm . The
moment of inertia shall be calculated with the construction programme or a calculation.
The free-running stopping time without a chain shall exceed 25 s at a rotational speed corresponding
to a chain speed of 20 m/s.
5.3.2.4 Saw chain
Chains shall be conditioned according to 7.5.1.
2) A suitable sprocket is the Oregon 7-tooth rim sprocket. This is an example of a suitable product available
commercially. This information is given for the convenience of users of this document and does not constitute an
endorsement by ISO of this product.
© ISO 2018 – All rights reserved 5

---------------------- Page: 17 ----------------------

SIST EN ISO 11393-1:2018
ISO 11393-1:2018(E)

3)
Use a chain (0,325”) pitch, with 56 chain links, that conforms to Figure 3 .
X Y Z
Figure 3 — Chain
5.3.2.5 Lubrication system
The lubrication system comprises a device capable of providing a continuous stream of oil to the guide
bar and saw chain at the rate of 1,5 to 3,0 ml/min.
4)
Oil type:             suitable for food production ;
2
Viscosity at 40 °C: (155 ± 5) mm /s;
2
Viscosity at 100 °C: (17 ± 2) mm /s;
3
Density at 15 °C: (860 ± 20) kg/m .
5.3.3 Re
...