EN ISO 7590:2018

SLOVENSKI STANDARD
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Steel cord conveyor belts - Methods for the determination of total thickness and cover
thickness (ISO 7590:2018)
Stahlseil-Fördergurte - Messung der Gesamtdicke und der Deckplattendicke (ISO
7590:2018)
Courroies transporteuses à câbles d'acier - Méthodes de détermination de l'épaisseur
totale et de l'épaisseur des revêtements (ISO 7590:2018)
Ta slovenski standard je istoveten z: EN ISO 7590:2018
ICS:
53.040.20 Deli za transporterje Components for conveyors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 7590
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2018
EUROPÄISCHE NORM
ICS 53.040.20 Supersedes EN ISO 7590:2009
English Version
Steel cord conveyor belts - Methods for the determination
of total thickness and cover thickness (ISO 7590:2018)
Courroies transporteuses à câbles d'acier - Méthodes Stahlseil-Fördergurte - Messung der Gesamtdicke und
de détermination de l'épaisseur totale et de l'épaisseur der Deckplattendicke (ISO 7590:2018)
des revêtements (ISO 7590:2018)
This European Standard was approved by CEN on 30 May 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 7590:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 7590:2018) has been prepared by Technical Committee ISO/TC 41 "Pulleys and
belts (including veebelts)" in collaboration with Technical Committee CEN/TC 188 “Conveyor belts” the
secretariat of which is held by SNV.
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 January 2019, and conflicting national standards shall
be withdrawn at the latest by January 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 ISO 7590:2009.
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 7590:2018 has been approved by CEN as EN ISO 7590:2018 without any modification.

INTERNATIONAL ISO
STANDARD 7590
Sixth edition
2018-05
Steel cord conveyor belts — Methods
for the determination of total
thickness and cover thickness
Courroies transporteuses à câbles d'acier — Méthodes de
détermination de l'épaisseur totale et de l'épaisseur des revêtements
Reference number
ISO 7590:2018(E)
©
ISO 2018
ISO 7590:2018(E)
© 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

ISO 7590:2018(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 2
6 Procedure. 2
6.1 General . 2
6.2 Measurement points . 2
6.3 Test pieces and test specimens . 2
6.3.1 General. 2
6.3.2 Test pieces and test specimens for method A1 . 3
6.3.3 Test specimens for method A2 . 3
6.3.4 Test specimens for method B . 3
6.4 Measurement of thickness . 3
6.4.1 Method A1 . 3
6.4.2 Method A2 . 4
6.4.3 Method B . 5
7 Test report . 5
Bibliography . 7
ISO 7590:2018(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 Technical Committee ISO/TC 41, Pulleys and belts (including veebelts),
Subcommittee SC 3, Conveyor belts.
This sixth edition cancels and replaces the fifth edition (ISO 7590:2009), which has been technically
revised. The main change compared to the previous edition is as follows:
— Figure 4 has been corrected.
iv © ISO 2018 – All rights reserved

INTERNATIONAL STANDARD ISO 7590:2018(E)
Steel cord conveyor belts — Methods for the determination
of total thickness and cover thickness
1 Scope
This document specifies three methods for the measurement of total belt thickness and the thickness of
covers of steel cord conveyor belts.
Methods A1 and A2 (micrometer methods) can be used for all steel cord conveyor belts for the
measurement of both total belt thickness and cover thickness.
Method B (optical method) is intended for the measurement of cover thickness only. It is not suitable if
there is a textile or metal weft, nor if the ends of the steel cords become twisted when cut.
2 Normative references
There are no normative references in this document.
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
— IEC Electropedia: available at http: //www .electropedia .org/
3.1
breaker
transverse reinforcement in the conveyor belt, typically of a textile material, inserted both above and
below or either above or below the steel cords at a distance of at least 1 mm and considered to be part
of the cover
Note 1 to entry: It is used to protect the longitudinal cords from impact or trapped material damage.
3.2
weft
transverse component of a protective reinforcement of either steel or textile cords, typically inserted
both above and below, or either above or below, the steel cords at a distance of less than 1 mm and
considered to be part of the belt carcass
4 Principle
The total thickness is measured using a micrometer at a number of specified points depending on
belt width.
The cover thicknesses are measured either:
a) by removing the covers, taking further measurements at the same specified points and calculating
each of the cover thicknesses by subtraction; or
b) by direct measurement using an optical measuring instrument.
ISO 7590:2018(E)
5 Apparat
...