EN ISO 14890:2003
(Main)Conveyor belts - Specification for rubber or plastics covered conveyor belts of textile construction for general use (ISO 14890:2003)
Conveyor belts - Specification for rubber or plastics covered conveyor belts of textile construction for general use (ISO 14890:2003)
ISO 14890:2003 specifies requirements for rubber and/or plastics covered conveyor belting of textile construction for general surface use on flat or troughed idlers. It is not suitable or valid for light conveyor belts as described in EN 873.
Fördergurte - Anforderungen an Textilfördergurte mit Gummi- oder Kunststoff-Deckplatten für allgemeine Anwendungen (ISO 14890:2003)
Diese Norm legt Anforderungen an Textilfördergurte mit Gummi- oder Kunststoff-Deckplatten für allgemeine Anwendungen über Tage auf flachen oder gemuldeten Tragrollen fest. Diese Norm ist nicht anwendbar für leichte Fördergurte nach EN 873. Einzelheiten, die keine Anforderungen dieser Norm, sondern die zwischen Hersteller und Abnehmer vereinbaren sind, sind als informativer Anhang A aufgenommen.
Courroies transporteuses - Spécification pour courroies tranporteuses à carcasse textile et revêtement caoutchouc ou plastique, pour utilisation générale (ISO 14890:2003)
L'ISO 14890:2003 spécifie les prescriptions relatives aux courroies à revêtement en caoutchouc et/ou en plastique, à structure textile, pour une utilisation générale de type «jour» sur des rouleaux plats ou en auge. Elle n'est pas applicable aux courroies transporteuses légères, telles que décrites dans l'EN 873.
Trakovi tračnih transportejev – Zahteve za tračne transportne trakove z gumeno ali plastično oblogo za splošne namene (ISO 14890:2003)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2004
7UDNRYLWUDþQLKWUDQVSRUWHMHY±=DKWHYH]DWUDþQHWUDQVSRUWQHWUDNRYH]JXPHQRDOL
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Conveyor belts - Specification for rubber or plastics covered conveyor belts of textile
construction for general use (ISO 14890:2003)
Fördergurte - Anforderungen an Textilfördergurte mit Gummi- oder Kunststoff-
Deckplatten für allgemeine Anwendungen (ISO 14890:2003)
Courroies transporteuses - Spécification pour courroies tranporteuses a carcasse textile
et revetement caoutchouc ou plastique, pour utilisation générale (ISO 14890:2003)
Ta slovenski standard je istoveten z: EN ISO 14890:2003
ICS:
53.040.20 Deli za transporterje Components for conveyors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 14890
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2003
ICS 53.040.00
English version
Conveyor belts - Specification for rubber or plastics covered
conveyor belts of textile construction for general use (ISO
14890:2003)
Courroies transporteuses - Spécification pour courroies Fördergurte - Anforderungen an Textilfördergurte mit
tranporteuses recouvertes de caoutchouc ou de plastique à Gummi- oder Kunststoff-Deckplatten für allgemeine
structure textile, d'usage général (ISO 14890:2003) Anwendungen (ISO 14890:2003)
This European Standard was approved by CEN on 10 April 2000.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14890:2003 E
worldwide for CEN national Members.
Contents
page
Foreword 3
Introduction 4
1 Scope 5
2 Normative References 5
3 Terms and definitions 6
4 Designation 7
5 Construction 10
6 Length 10
7 Width 11
8 Rubber cover (see Table 5) 12
9 Tolerances on total belt thickness and cover thickness 14
10 Transverse fabric joints in multi-ply belting 14
11 Longitudinal fabric joints in multi-ply belting and Duo-ply belting 15
12 Longitudinal fabric or carcass joints in solid woven and mono ply belting 15
13 Elongation 16
14 Full thickness tensile strength (see clause 3) 16
15 Adhesion 16
16 Troughability 17
17 Sampling 18
18 Identification 18
Annex A (informative) Items to be agreed between manufacturer and purchaser 19
Annex B (informative) Helpful information to be supplied by the purchaser 20
Annex C (informative) Lateral Drift (Straight Running) 22
Bibliography 23
Foreword
This document (EN ISO 14890:2003) has been prepared by Technical Committee CEN/TC 188
"Conveyor belts", the secretariat of which is held by BSI, in collaboration with Technical
Committee ISO/TC 41 "Pulleys and belts (including veebelts)".
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 November 2003, and conflicting national
standards shall be withdrawn at the latest by November 2003.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and
the United Kingdom.
Introduction
In the preparation of this Part of this standard, consideration has been given to the work of ISO
Committee ISO/TC41/SC3, “Conveyor belts”, and the following standards for conveyor belts have
been followed as far as possible.
ISO 251:1987 Conveyor belts - Widths and lengths
ISO 252-1 Textile conveyor belts - Adhesive strength between
constitutive elements - Part 1 : Methods of test
ISO 282:1992 Conveyor belts - Sampling
ISO 283-1 Textile conveyor belts - Full thickness tensile testing - Part 1:
Determination of tensile strength, elongation at break and
elongation of the reference load.
ISO 432:1989 Ply type conveyor belts - Characteristics of construction
ISO 433:1991 Conveyor belts - marking
ISO 583:1990 Conveyor belts with a textile carcass – Tolerances on total
thickness and thickness of covers – Direct measurement method
ISO 703:1988 Conveyor belts - Troughability - Characteristics of transverse
flexibility and test method
1 Scope
This European Standard specifies requirements for rubber and/or plastics covered conveyor
belting of textile construction for general surface use on flat or troughed idlers.
This standard is not suitable or valid for light conveyor belts as described in EN 873.
Items that are not requirements of this standard, but need to be agreed between the manufacturer
and the purchaser, are included as an informative annex A.
A list of the details that should be supplied by the purchaser of belting with an enquiry is given in
informative annex B.
2 Normative References
This European Standard incorporates by dated or undated references, provisions from other
publications. These normative references are cited at the appropriate places in the text, and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of
any of these publications apply to this European Standard only when incorporated in it by an
amendment or revision. For undated references the last edition of the publication referred to
applies (including amendments).
ISO 37, Rubber, vulcanized or thermoplastic – Determination of tensile stress-strain
properties.
ISO 188, Rubber, vulcanized or themoplastic - Accelerated ageing and heat-resistance tests.
ISO 282, Conveyor belts – Sampling.
ISO 4649, Rubber, vulcanized or themoplastic - Determination of abrasion resistance using a
rotating cylindrical drum device.
ISO 10247, Conveyor belts – Characteristics of covers – Classification.
EN ISO 252-1, Textile conveyor belts - Adhesion strength between constitutive elements -
Part 1: Methods of test (ISO 252-1:1999).
EN ISO 283-1, Textile conveyor belts – Full thickness tensile testing – Part 1: Determination
of tensile strength, elongation at break and elongation at the reference load (ISO 283-
1:2000).
EN ISO 583-1, Conveyor belts with a textile carcass - Total thickness and thickness of
elements - Part 1: Methods of test (ISO 583-1:1999).
EN ISO 703-1, Conveyor belts - Transverse flexibility and troughability - Part 1: Test method
(ISO 703-1:1999).
EN 12882, Conveyor belting for general purpose use - Electrical and flammability
safety requirements.
prEN ISO 16851, Textile conveyor belts - Determination of the net length of an endless
(spliced) conveyor belt (ISO/DIS 16851:1998).
3 Terms and definitions
For the purposes of this European Standard, the following terms and definitions apply.
3.1
tensile strength
greatest measured force during the tensile test divided by the width of the test piece . It is
expressed in N/mm
3.2
reference force (reference load)
one-tenth of the nominal tensile strength in the longitudinal direction multiplied by the width of
the test piece in mm. It is expressed in Newtons
Example:
Nominal tensile strength = 1 600 N/mm
Reference force = 160N/mm
Reference force for 25 mm test piece = 25mm · 160 N/mm = 4 000 N.
NOTE This definition does not imply that a 10:1 factor should be used in design calculations, but it is
important to bear in mind that any belt with any form of joint or splice should be capable of transmitting
the desired working strength.
3.3
slab belting
conveyor belting made in wide widths and long lengths for subsequent slitting and cutting into
narrower widths and shorter lengths to suit individual conveyor installations
3.4
solid woven belting
conveyor belting consisting of a carcass of more than one ply, the plies being interlocked in the
weave, or bound together by binding threads in the course of weaving
3.5
mono-ply belting
conveyor belting with a carcass consisting of one ply of woven textile fabric
3.6
duo-ply belting
conveyor belting with a carcass consisting of two plies of woven textile fabric bonded together by
an intermediate layer of elastomer of sufficient thickness to allow the incorporation of a tension
element in the joint
3.7
multi-ply belting
Conveyor belting with a carcass of two or more plies of woven textile fabric,the adjacent plies
being bonded together by an intermediate layer of elastomer
3.8
primary yarn
load carrying yarn which contributes more than 50 % of the tensile strength
3.9
secondary yarn
load carrying yarn which contributes less than 50 % of the tensile strength
4 Designation
4.1 Belting is designated by reference to the following conveyor belt characteristics :
a) reference to this European Standard, i.e. EN ISO 14890;
b) the required length in metres;
c) the required width in millimetres (see Table 4);
d) the fibre type of the carcass, in both the warp and weft directions,
e.g. polyester (E) (warp) polyamide (P), (weft) (EP) (see Table 1);
e) the full thickness tensile strength in N/mm of belt width (see Table 8);
f) the number of plies or belt type (see clause 3);
g) top cover thickness in millimetres;
h) bottom cover thickness in mm (where relevant, see clause 5);
j) cover classification (see Table 5), where appropriate;
k) safety category according to EN 12882.
4.2 Examples of ordering are given below
Example 1: Multiply-ply belt
A 400 m long belt, 1 200 mm wide, textile material in the longitudinal direction of polyester (E)
and in the transverse direction of polyamide (P), having a minimum full thickness tensile strength
of 1 000 N/mm belt width, with 5 plies and a top cover thickness of 4 mm, a bottom cover
thickness of 2 mm, a cover classification of H in accordance with Table 5, and complying with the
safety requirements of category 1 of EN 12882.
Example 1 - Designation
EN Length Width Textile material Tensile No Cover Safety
ISO Strength of Cover gauge Class category
plies (mm) according
N/mm to
EN 12882
14890 (m) (mm)
Warp Weft Top
Bottom
400 1 200 E P 1 000 5 4 2 H 1
Example 2: Duo-ply belt
A 200 m long belt, 1 000 mm wide, textile material in the longitudinal direction of polyester
cotton (EB) and in the transverse direction of polyamide cotton (PB), having a minimum full
thickness tensile strength of 800 N/mm, with 2 plies and a top and bottom cover of 1,5mm,
complying with the safety requirements of category 2A of EN 12882.
Example 2 - Designation
EN Length Width Textile material Tensile No Cover Safety
ISO Strength of Cover gauge Class category
plies (mm) according
N/mm to
EN 12882.
14890 (m) (mm)
Warp Weft Top
Bottom
200 1 000 EB PB 800 2 1,5 1,5 N/A 2A
Example 3: Mono-ply
A 150 m long, 1 200 mm wide Mono-ply belt, having a polyester warp (E) and a polyamide weft
(P), a full thickness tensile strength of 630 N/mm belt width and a top cover thickness of 6 mm, a
bottom cover thickness of 2 mm, and a cover classification of D in accordance with Table 5,
complying with safety requirement of category 1 of EN 12882.
Example 3 - Designation
EN Length Width Textile material Tensile No Cover Safety
ISO Strength of Cover gauge Class category
plies (mm) according
N/mm to
EN 12882
(m) (mm)
Warp Weft Top
Bottom
150 1 200 E P 630 1 6 2 D 1
Example 4: Solid woven belt
A 300 m long, 1 600 mm wide Solid Woven belt having a combined polyester and polyamide
warp (EP) and a polyamide cotton weft (PB) and an integrally woven cotton (B) warp pile, having
a minimum tensile strength of 1 250 N/mm belt width and 1,5 mm top and bottom covers,
complying with safety requirement of category 3A of EN 12882.
Example 4 - Designation
EN Length Width Textile material Tensile No of cover Safety
ISO Strength plies Cover gauge class category
(mm) accordin
N/mm g to
EN
14890 (m) (mm)
Warp Weft Top
Bottom
300 1 600 PB 1250 SW(1) 1,5 1,5 N/A 3A
EP(B)
Table 1 - CODE DESIGNATION OF YARN
Code Letter Yarn
B Cotton
Z Staple Rayon
R Rayon
P Polyamide
E Polyester
D Aramid
G Glass
NOTE Where a fabric contains a secondary yarn, its
identity shall be indicated by the use of bracketed
characters to designate yarn type.
5 Construction
The carcass shall consist either of one or more plies of woven fabric or of solid woven fabric and
shall be impregnated or coated with a rubber or plastics mix.
Where a breaker consisting of open mesh fabric, or cord fabric or cord layer is placed between the
cover and carcass, or is embedded in the cover for the purpose of carcass protection, such a layer
shall be considered to be part of the cover thickness and not counted as a fabric ply.
If a fabric pile is integrally woven with the carcass on either one or both of the surfaces of the
carcass it shall be considered to be part of the carcass thickness.
NOTE The external su
...
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