SIST EN 13411-7:2021

Terminations for steel wire ropes - Safety - Part 7: Symmetric wedge socket

This document specifies the minimum requirements for symmetrical wedge socket terminations for stranded steel wire ropes conforming to prEN 12385-5 for lifts.
This document covers those symmetric wedge sockets intended for use at temperatures between -20 °C and 100 °C.
This document only covers those symmetric wedge sockets that have welded socket bodies. An example of the construction and sizes of a symmetric wedge socket is given in informative Annex A.
The informative Annex B gives the recommendations for the safe use and inspection of symmetric wedge socket according to Annex A.
This document deals with all significant hazards, hazardous situations and events relevant to symmetric wedge sockets for terminations for steel wire ropes, when used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer.
The hazards covered by this European Standard are identified in Clause 4.
This document applies to symmetric wedge sockets, which are manufactured after the date of its publication.

Endverbindungen für Drahtseile aus Stahldraht - Sicherheit - Teil 7: Symmetrische Seilschlösser

Dieses Dokument legt die Mindestanforderungen an symmetrische Seilschlösser für Endverbindungen an Aufzugseilen nach prEN 12385 5 fest.
Dieses Dokument gilt für symmetrische Seilschlösser, die für den Gebrauch bei Temperaturen zwischen −20 °C und 100 °C bestimmt sind.
Dieses Dokument gilt nur für symmetrische Seilschlösser mit geschweißtem Gehäuse. Der informative Anhang A enthält ein Beispiel für die Konstruktion und die Maße eines symmetrischen Seilschlosses.
Der informative Anhang B enthält Empfehlungen für den sicheren Gebrauch und die Prüfung von sym-metrischen Seilschlössern nach Anhang A.
Dieses Dokument behandelt alle signifikanten Gefährdungen, Gefährdungssituationen und  ereignisse, die für symmetrische Seilschlösser für Endverbindungen für Drahtseile aus Stahldraht relevant sind, wenn diese zweckbestimmend verwendet und die Bedingungen der Fehlanwendung, die durch den Hersteller ange¬messen vorhersehbar sind, beachtet werden.
Gefährdungen, die in dieser Norm behandelt werden, sind in Abschnitt 4 angegeben.
Dieses Dokument ist für symmetrische Seilschlösser anwendbar, die nach dem Datum seiner Veröffent-lichung hergestellt werden.

Terminaisons pour câbles en acier - Sécurité - Partie 7: Boîte à coin symétrique

Le présent document spécifie les prescriptions minimales des terminaisons de boîte à coin symétrique destinées aux câbles en acier toronnés pour ascenseurs conformes à l’EN 12385-5.
Le présent document couvre les boîtes à coin symétrique prévues pour être utilisées à des températures comprises entre – 20 °C et 100 °C.
Le présent document traite uniquement des boîtes à coin symétrique dont le corps est soudé. L’Annexe informative A donne un exemple de construction et de dimensions d’une boîte à coin symétrique.
L’Annexe informative B donne des recommandations permettant l’utilisation et le contrôle en toute sécurité des boîtes à coin symétrique conformes à l’Annexe A.
Le présent document traite de tous les phénomènes dangereux et de toutes les situations et événements dangereux significatifs correspondant aux boîtes à coin symétrique pour les terminaisons de câbles en acier, lorsqu’elles sont utilisées dans les conditions prévues, ainsi que dans les conditions de mauvais usage raisonnablement prévisibles par le fabricant.
Les phénomènes dangereux couverts par le présent document sont identifiés à l’Article 4.
Le présent document s’applique aux boîtes à coin symétrique qui sont fabriquées après sa date de publication.

Zaključki jeklenih žičnih vrvi - Varnost - 7. del: Simetrični zagozdni spoji

General Information

• Status: Published
• Public Enquiry End Date: 30-Dec-2018
• Publication Date: 17-Aug-2021
• ICS: 21.060.70 - Clamps and staples
• ICS: 53.020.30 - Accessories for lifting equipment
• ICS: 77.140.99 - Other iron and steel products
• Technical Committee: DTN - Lift and transport appliances
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 14-Jul-2021
• Due Date: 18-Sep-2021
• Completion Date: 18-Aug-2021
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Directive: 2014/33/EU - Directive 2014/33/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to lifts and safety components for lifts (recast)
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Mandate: M/549 - [C(2016)5884] Lifts and safety components for lifts
• Ref Project: EN 13411-7:2021 - Terminations for steel wire ropes - Safety - Part 7: Symmetric wedge socket

Relations

• Replaces: SIST EN 13411-7:2006+A1:2008 - Terminations for steel wire ropes - Safety - Part 7: Symmetric wedge socket
• Effective Date: 05-Jul-2017
• Replaces: SIST EN 13411-7:2006+A1:2008 - Terminations for steel wire ropes - Safety - Part 7: Symmetric wedge socket
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 13411-7:2021
01-september-2021
Nadomešča:
SIST EN 13411-7:2006+A1:2008
Zaključki jeklenih žičnih vrvi - Varnost - 7. del: Simetrični zagozdni spoji
Terminations for steel wire ropes - Safety - Part 7: Symmetric wedge socket
Endverbindungen für Drahtseile aus Stahldraht - Sicherheit - Teil 7: Symmetrische
Seilschlösser
Terminaisons pour câbles en acier - Sécurité - Partie 7: Boîte à coin symétrique
Ta slovenski standard je istoveten z: EN 13411-7:2021
ICS:
53.020.30 Pribor za dvigalno opremo Accessories for lifting
equipment
77.140.99 Drugi železni in jekleni izdelki Other iron and steel products
SIST EN 13411-7:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 13411-7:2021

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SIST EN 13411-7:2021


EN 13411-7
EUROPEAN STANDARD

NORME EUROPÉENNE

July 2021
EUROPÄISCHE NORM
ICS 21.060.70; 53.020.30; C Supersedes EN 13411-7:2006+A1:2008
English Version

Terminations for steel wire ropes - Safety - Part 7:
Symmetric wedge socket
Terminaisons pour câbles en acier - Sécurité - Partie 7 : Endverbindungen für Drahtseile aus Stahldraht -
Boîte à coin symétrique Sicherheit - Teil 7: Symmetrische Seilschlösser
This European Standard was approved by CEN on 28 April 2021.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13411-7:2021 E
worldwide for CEN national Members.

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SIST EN 13411-7:2021
EN 13411-7:2021 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 List of significant hazards . 8
5 Safety requirements and/or measures . 8
5.1 Geometry of wedge and socket body . 8
5.2 Security of the pin . 9
5.3 Welded socket body . 9
5.4 Mechanical properties . 9
5.4.1 General . 9
5.4.2 Termination efficiency . 9
5.4.3 Fatigue behaviour of the socket body and pin . 9
5.4.4 Low temperature properties . 9
6 Verification of safety requirements . 10
6.1 Qualifications of personnel. 10
6.2 Type testing . 10
6.2.1 General . 10
6.2.2 Tensile efficiency test . 10
6.2.3 Fatigue test . 10
6.2.4 Acceptance criteria for type testing . 10
6.2.5 Charpy impact test . 11
6.3 Manufacturing tests and examination . 11
6.3.1 Manufacturers tests . 11
6.3.2 Visual examination of welded socket bodies . 11
6.3.3 Weld testing . 12
6.4 Manufacturing test and examination regime and acceptance criteria . 12
7 Information for use . 12
7.1 Marking . 12
7.2 Fitting instructions . 13
7.3 Manufacturer's certificate . 13
Annex A (informative) Construction and sizes for one design of symmetric wedge
socket with welded socket body . 14
A.1 General . 14
A.2 Material . 14
A.3 Dimensions . 14
Annex B (informative) Recommendations for safe use and inspection of symmetric
wedge sockets conforming to Annex A . 17
B.1 General . 17
2

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SIST EN 13411-7:2021
EN 13411-7:2021 (E)
B.2 Method of assembly . 17
B.3 Inspection in use . 18
Bibliography . 19
3

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SIST EN 13411-7:2021
EN 13411-7:2021 (E)
European foreword
This document (EN 13411-7:2021) has been prepared by Technical Committee CEN/TC 168
“Chains, ropes, webbing, slings and accessories - Safety”, the secretariat of which is held by BSI.
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 2022, and conflicting national
standards shall be withdrawn at the latest by January 2022.
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 13411-7:2006+A1:2008.
The main changes compared to the previous edition are listed below:
— a major change to 6.4;
— updates to standard references;
— coefficient of utilisation changed from 10:1 to 12:1 for lifting persons – 5.4.1.
EN 13411 consists of the following parts:
— Part 1: Thimbles for steel wire rope slings;
— Part 2: Splicing of eyes for steel wire rope slings;
— Part 3: Ferrules and ferrule-securing;
— Part 4: Metal and resin socketing;
— Part 5: U-bolt wire rope grips;
— Part 6: Asymmetric wedge socket;
— Part 7: Symmetric wedge socket;
— Part 8: Swage terminals and swaging;
— Part 9: Solid thimbles.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain,
Sweden, Switzerland, Turkey and the United Kingdom.
4

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SIST EN 13411-7:2021
EN 13411-7:2021 (E)
Introduction
This European standard is a type C standard as stated in EN ISO 12100.
This part of this European standard has been prepared to provide a means of conforming with
the essential safety requirements of the Machinery Directive and the Lift Directive and
associated EFTA regulations.
The wedge socket concerned and the extent to which hazards, hazardous situations and events
are covered are indicated in the scope of this standard part of the standard.
When provisions of this type C standard are different from those which are stated in type A or B
standards, the provisions of this type C standard take precedence over the provisions of the
other standards for symmetric wedge sockets that have been designed and produced according
to the provisions of this type C standard.
Purchasers ordering to this standard are advised to specify in their purchasing contract that the
supplier operates a quality assurance system applicable to the relevant part of this standard
(e.g. EN ISO 9001) to ensure themselves that products claiming to comply consistently achieve
the required level of quality.
5

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SIST EN 13411-7:2021
EN 13411-7:2021 (E)
1 Scope
This document specifies the minimum requirements for symmetrical wedge socket
terminations for stranded steel wire ropes conforming to EN 12385-5 for lifts.
This document covers those symmetric wedge sockets intended for use at temperatures
between −20 °C and 100 °C.
This document only covers those symmetric wedge sockets that have welded socket bodies. An
example of the construction and sizes of a symmetric wedge socket is given in informative
Annex A.
The informative Annex B gives the recommendations for the safe use and inspection of
symmetric wedge socket according to Annex A.
This document deals with all significant hazards, hazardous situations and events relevant to
symmetric wedge sockets for terminations for steel wire ropes, when used as intended and
under conditions of misuse which are reasonably foreseeable by the manufacturer.
The hazards covered by this document are identified in Clause 4.
This document applies to symmetric wedge sockets, which are manufactured after the date of
its publication.
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.
EN 12385-2:2002+A1:2008, Steel wire ropes — Safety — Part 2: Definitions, designation and
classification
EN 12385-5:2021, Steel wire ropes — Safety — Part 5: Stranded ropes for lifts
EN ISO 148-1:2016, Metallic materials — Charpy pendulum impact test — Part 1: Test method
(ISO 148-1:2016)
EN ISO 4063:2010, Welding and allied processes — Nomenclature of processes and reference
numbers (ISO 4063:2009, Corrected version 2010-03-01)
EN ISO 5817:2014, Welding — Fusion-welded joints in steel, nickel, titanium and their alloys
(beam welding excluded) — Quality levels for imperfections (ISO 5817:2014)
EN ISO 7500-1:2018, Metallic materials — Calibration and verification of static uniaxial testing
machines — Part 1: Tension/compression testing machines — Calibration and verification of the
force-measuring system (ISO 7500-1:2018)
EN ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and
risk reduction (ISO 12100:2010)
EN ISO 17638:2016, Non-destructive testing of welds — Magnetic particle testing
(ISO 17638:2016)
6

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SIST EN 13411-7:2021
EN 13411-7:2021 (E)
EN ISO 23277:2015, Non-destructive testing of welds — Penetrant testing — Acceptance levels
(ISO 23277:2015)
3 Terms and definitions
For the purposes of this document, the following terms and definitions given in
EN ISO 12100:2010, EN 12385-2 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
symmetric wedge socket
assembly consisting of a socket body, wedge, and a pin marginally offset to the longitudinal axis
of the live portion of the rope, and securing means for the pin
Note 1 to entry: See Figure B.1.
3.2
socket body
principal component of a wedge socket termination having an internal tapered form suitable for
receiving a wedge (see 3.3) and the rope with which the wedge is associated
Note 1 to entry: See Figure A.1.
3.3
wedge
flat tapered component with peripheral groove, suitable for fitting into a tapered socket body to
accommodate a rope of matching nominal diameter
Note 1 to entry: See Figure A.1.
3.4
pin
removable component intended to facilitate connection of the socket body to its anchorage
point
3.5
lot
number of symmetric wedge sockets from which samples are selected for testing purposes
which are of the same type and dimension, each of their constituent components manufactured
during the same production run from material of the same cast and subjected to the same heat
treatment process
7

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SIST EN 13411-7:2021
EN 13411-7:2021 (E)
4 List of significant hazards
This European standard contains all the significant hazards, hazardous situations and events, as
far as they are dealt with in this European standard, identified by risk assessment as significant
for this type of steel wire rope termination that require action to eliminate or reduce the risk.
In particular, the hazard caused by accidental release of a load, or release of a load due to failure
of a symmetric wedge socket, puts at risk, either directly or indirectly, the safety or health of
those persons within the hazard zone.
Errors in the fitting of accessories can also lead to premature failure and this European
standard contains dimensional and geometrical requirements to allow correct fit.
Table 1 contains those hazards that require action to reduce risk identified by risk assessment
as being specific and significant for symmetric wedge sockets.
Table 1 — Hazards and associated requirements
Hazards relevant to this standard identified by Relevant clause of this standard
reference to EN ISO 12100:2010
Inadequate mechanical strength 5.1
5.3
Clause 6
Errors of fitting 5.1
7.2
Insecurity of components 5.2
Failure arising from fatigue 5.4.3
6.2.3
Inadequate low temperature properties 5.4.4
6.2.5
Incorrect identification of components 7.1
7.2
Inadequate information about the item 7.3
5 Safety requirements and/or measures
5.1 Geometry of wedge and socket body
Symmetric wedge socket terminations for ropes shall conform to the following geometrical
criteria:
— the wedge shall be symmetric;
— the internal side surfaces of the socket body and the wedge in contact with the rope shall be
straight;
— the grooves of the body and the wedge shall have no surface irregularities, such as,
protrusions or joints which could influence the intimate contact with the rope;
— the clamping length between the socket body and the wedge shall be at least 7,3 times the
nominal rope diameter d;
8

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SIST EN 13411-7:2021
EN 13411-7:2021 (E)
— the radius of the wedge at the bottom of the groove at the large end of the wedge shall be at
least 1 times the nominal diameter d of the rope.
5.2 Security of the pin
The pin shall be provided with a means for securing it in position when in operation.
5.3 Welded socket body
The welding and allied process shall conform to one of those specified in EN ISO 4063. The
pe
...

SLOVENSKI STANDARD
oSIST prEN 13411-7:2018
01-december-2018
=DNOMXþNLMHNOHQLKåLþQLKYUYL9DUQRVWGHO6LPHWULþQL]DJR]GQLVSRML
Terminations for steel wire ropes - Safety - Part 7: Symmetric wedge socket
Endverbindungen für Drahtseile aus Stahldraht - Sicherheit - Teil 7: Symmetrische
Seilschlösser
Terminaisons pour câbles en acier - Sécurité - Partie 7: Boîte à coin symétrique
Ta slovenski standard je istoveten z: prEN 13411-7
ICS:
21.060.70 Sponke in skobe Clamps and staples
53.020.30 Pribor za dvigalno opremo Accessories for lifting
equipment
oSIST prEN 13411-7:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 13411-7:2018

---------------------- Page: 2 ----------------------
oSIST prEN 13411-7:2018


DRAFT
EUROPEAN STANDARD
prEN 13411-7
NORME EUROPÉENNE

EUROPÄISCHE NORM

October 2018
ICS 21.060.70; 53.020.30 Will supersede EN 13411-7:2006+A1:2008
English Version

Terminations for steel wire ropes - Safety - Part 7:
Symmetric wedge socket
Terminaisons pour câbles en acier - Sécurité - Partie 7: Endverbindungen für Drahtseile aus Stahldraht -
Boîte à coin symétrique Sicherheit - Teil 7: Symmetrische Seilschlösser
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 168.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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.

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.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


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. prEN 13411-7:2018 E
worldwide for CEN national Members.

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oSIST prEN 13411-7:2018
prEN 13411-7:2018 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 List of significant hazards . 7
5 Safety requirements and/or measures . 7
6 Verification of safety requirements . 9
7 Information for use . 11
Annex A (normative) Construction and sizes for one design of symmetric wedge
socket with welded socket body . 13
A.1 General . 13
A.2 Material . 13
A.3 Dimensions . 13
Annex B (informative) Recommendations for safe use and inspection of symmetric
wedge sockets conforming to Annex A, to be provided by the manufacturer . 16
B.1 General . 16
B.2 Method of assembly . 16
B.3 Inspection in use . 17
Annex ZA (informative) Relationship between this European Standard and the
essential requirements of Directive 2014/33/EU aimed to be covered . 18
Annex ZB (informative) Relationship between this European Standard and the
essential requirements of Directive 2006/42/EC aimed to be covered . 20
Bibliography . 22
2

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oSIST prEN 13411-7:2018
prEN 13411-7:2018 (E)
European foreword
This document (prEN 13411-7:2018) has been prepared by Technical Committee CEN/TC 168
“Chains, ropes, webbing, slings and accessories - Safety”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 13411-7:2006+A1:2008.
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).
For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral
parts of this document.
EN 13411 consists of the following parts:
• Part 1: Thimbles for steel wire rope slings
• Part 2: Splicing of eyes for steel wire rope slings
• Part 3: Ferrules and ferrule-securing
• Part 4: Metal and resin socketing
• Part 5: U-bolt wire rope grips
• Part 6: Asymmetric wedge socket
• Part 7: Symmetric wedge socket
3

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oSIST prEN 13411-7:2018
prEN 13411-7:2018 (E)
Introduction
This European Standard is a type C standard as stated in EN ISO 12100.
This Part of this European Standard has been prepared to provide a means of conforming with
the essential safety requirements of the Machinery Directive and the Lift Directive and
associated EFTA regulations.
The wedge socket concerned and the extent to which hazards, hazardous situations and events
are covered are indicated in the scope of this standard part of the standard.
When provisions of this type C standard are different from those which are stated in type A or B
standards, the provisions of this type C standard take precedence over the provisions of the
other standards for symmetric wedge sockets that have been designed and produced according
to the provisions of this type C standard.
Purchasers ordering to this standards are advised to specify in their purchasing contract that
the supplier operates a quality assurance system applicable to the relevant part of this standard
(e.g. EN ISO 9001) to assure themselves that products claiming to comply consistently achieve
the required level of quality.
4

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oSIST prEN 13411-7:2018
prEN 13411-7:2018 (E)
1 Scope
This document specifies the minimum requirements for symmetrical wedge socket
terminations for stranded steel wire ropes conforming to prEN 12385-5 for lifts.
This document covers those symmetric wedge sockets intended for use at temperatures
between -20 °C and 100 °C.
This document only covers those symmetric wedge sockets that have welded socket bodies. An
example of the construction and sizes of a symmetric wedge socket is given in informative
Annex A.
The informative Annex B gives the recommendations for the safe use and inspection of
symmetric wedge socket according to Annex A.
This document deals with all significant hazards, hazardous situations and events relevant to
symmetric wedge sockets for terminations for steel wire ropes, when used as intended and
under conditions of misuse which are reasonably foreseeable by the manufacturer.
The hazards covered by this European Standard are identified in Clause 4.
This document applies to symmetric wedge sockets, which are manufactured after the date of
its publication.
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.
EN 1561:2011, Founding — Grey cast irons
EN 1562:2012, Founding — Malleable cast irons
EN 10025-2:2004, Hot rolled products of structural steels — Part 2: Technical delivery conditions
for non-alloy structural steels
EN 12385-2:2002+A1:2008, Steel wire ropes — Safety — Part 2: Definitions, designation and
classification
prEN 12385-5:2018, Steel wire ropes — Safety — Part 5: Stranded ropes for lifts
EN ISO 148-1:2016, Metallic materials — Charpy pendulum impact test — Part 1: Test method
(ISO 148-1:2016)
EN ISO 4063:2010, Welding and allied processes — Nomenclature of processes and reference
numbers (ISO 4063:2009, Corrected version 2010-03-01)
EN ISO 5817:2014, Welding — Fusion-welded joints in steel, nickel, titanium and their alloys
(beam welding excluded) — Quality levels for imperfections (ISO 5817:2014)
EN ISO 683-1:2018, Heat-treatable steels, alloy steels and free-cutting steels — Part 1: Non-alloy
steels for quenching and tempering (ISO 683-1:2016)
EN ISO 683-2:2018, Heat-treatable steels, alloy steels and free-cutting steels — Part 2: Alloy steels
for quenching and tempering (ISO 683-2:2016)
5

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oSIST prEN 13411-7:2018
prEN 13411-7:2018 (E)
EN ISO 7500-1:2018, Metallic materials — Calibration and verification of static uniaxial testing
machines — Part 1: Tension/compression testing machines — Calibration and verification of the
force-measuring system (ISO 7500-1:2018)
EN ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and
risk reduction (ISO 12100:2010)
EN ISO 17638:2016, Non-destructive testing of welds — Magnetic particle testing (ISO
17638:2016)
EN ISO 23277:2015, Non-destructive testing of welds — Penetrant testing — Acceptance levels
(ISO 23277:2015)
3 Terms and definitions
For the purposes of this document, the following terms and definitions given in EN ISO
12100:2010, EN 12385-2 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
symmetric wedge socket
assembly consisting of a socket body, wedge, and pin and securing means for the pin; when
assembled the centre line of the pin is marginally offset (by one half rope diameter, see Figure
B.1) to the longitudinal axis of the live portion of the rope
3.2
socket body
principal component of a wedge socket termination having an internal tapered form suitable for
receiving a wedge (see 3.3) and the rope with which the wedge is associated, see Figure A.1
3.3
wedge
flat tapered component with peripheral groove, suitable for fitting into a tapered socket body to
accommodate a rope of matching nominal diameter, see Figure A.1
3.4
pin
removable component intended to facilitate connection of the socket body to its anchorage
point
3.5
lot
number of symmetric wedge sockets from which samples are selected for testing purposes
which are of the same type and dimension, each of their constituent components manufactured
during the same production run from material of the same cast and subjected to the same heat
treatment process
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4 List of significant hazards
This European Standard contains all the significant hazards, hazardous situations and events, as
far as they are dealt with in this European Standard, identified by risk assessment as significant
for this type of steel wire rope termination that require action to eliminate or reduce the risk.
In particular, the hazard caused by accidental release of a load, or release of a load due to failure
of a symmetric wedge socket, puts at risk, either directly or indirectly, the safety or health of
those persons within the hazard zone.
Errors in the fitting of accessories can also lead to premature failure and this European
Standard contains dimensional and geometrical requirements to allow correct fit.
Table 1 contains those hazards that require action to reduce risk identified by risk assessment
as being specific and significant for symmetric wedge sockets.
Table 1 — Hazards and associated requirements
Hazards relevant to this standard identified by Relevant clause of this standard
reference to EN ISO 12100:2010
Inadequate mechanical strength 5.1
5.3
Clause 6
Errors of fitting 5.1
7.2
Insecurity of components 5.2
Failure arising from fatigue 5.4.3
6.2.3
Inadequate low temperature properties 5.4.4
6.2.5
Incorrect identification of components 7.1
7.2
Inadequate information about the item 7.3
5 Safety requirements and/or measures
5.1 Geometry of wedge and socket body
Symmetric wedge socket terminations for ropes shall conform to the following geometrical
criteria (see Figure A.1):
• the wedge groove angle (α) shall be the same as the socket angle in the body (β);
• the wedge shall be symmetric;
• the internal side surfaces of the socket body and the wedge in contact with the rope shall be
straight;
• the grooves of the body and the wedge shall have no surface irregularities, such as,
protrusions or joints which could influence the intimate contact with the rope;
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• the clamping length between the socket body and the wedge shall be at least 7,3 times the
nominal rope diameter d;
• the radius r of the wedge at the bottom of the groove at the large end shall be at least 1
3
times the nominal diameter d of the rope.
5.2 Security of the pin
The pin shall be provided with a means for securing it in position when in operation.
5.3 Welded socket body
The welding and allied process shall conform to one of those specified in EN ISO 4063. The
person who supervises the production process shall be trained in the chosen welding process.
The quality of the welding joint shall be in accordance with assessment group B of EN ISO 5817.
There shall be no melted-on weld chips.
The ligament distance in the root of the welding joint shall be 1 mm for material thickness up to
6 mm and 1,5 mm for material thickness more than 6 mm up to and including 12 mm. The
penetration of the root of the welding shall be avoided. There shall be no increase of the welding
joint in the area of contact with the rope. The welding joint shall have a bonding area of at least
70 % at the joint edge.
Any offset of the edges of the body halves shall be limited to 0,5 mm for material thickness up to
6 mm and 0,8 mm for material thickness more than 6 mm up to and including 12 mm.
5.4 Mechanical properties
5.4.1 General
The required mechanical properties take into account that symmetric wedge sockets in
combination with stranded ropes for lifts to prEN 12385-5 have to be used with a minimum
coefficient of use of 5 for lifting goods and 10 for lifting of persons.
5.4.2 Termination efficiency
When tested in accordance with 6.2.2, the efficiency of the assembled termination shall be at
least 80 % of the minimum breaking force of the rope without any movement between the rope
and the termination and any deformation of the wedge and the socket.
5.4.3 Fatigue behaviour of the socket body and pin
When tested in accordance with 6.2.3 the socket body, wedge and pin shall not exhibit any
indications of cracks after 75 000 load cycles.
The socket and wedge shall also exhibit no sign of local permanent deformation.
5.4.4 Low temperature properties
The material of the socket body and pin, when tested in accordance to 6.2.4 shall possess a
minimum low temperature ductility at –20 °C as follows:
Minimum average Charpy impact value at 27 J, with no individual value less than 18 J.
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6 Verification of safety requirements
6.1 Qualifications of personnel
All testing and examination shall be carried out by a person competent for the purpose.
6.2 Type testing
6.2.1 General
Two type tests shall be carried out for each requirement, in accordance with 6.2.2 to 6.2.3 on
assembled terminations of each design, material and method of manufacture, using the highest
minimum breaking force of rope as defined in prEN 12385-5 for which the socket is designed.
If the dimensional criteria, the material or the method of manufacture are subsequently varied
outside the usual manufacturing tolerances, the type tests shall be repeated.
The testing machine shall conform to the requirements of EN ISO 7500-1.
6.2.2 Tensile efficiency test
Subject the assembled termination to an initial load of 60 % of the minimum breaking force of
the rope, then increase the loading at a rate of not more than 0,5 % of the breaking force per
second in the tensile testing machine. The test shall be continued until either rope breaks or
slips out of the socket.
If terminations are tested in pairs, the distance between the inner faces of the socket bodies
shall be at least 30d.
6.2.3 Fatigue test
The test shall
...