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
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
14-Jul-2021
Due Date
18-Sep-2021
Completion Date
18-Aug-2021

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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.

---------------------- Page: 1 ----------------------
SIST EN 13411-7:2021
---------------------- Page: 2 ----------------------
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.
---------------------- Page: 3 ----------------------
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

---------------------- Page: 4 ----------------------
SIST EN 13411-7:2021
EN 13411-7:2021 (E)

B.2 Method of assembly ..................................................................................................................................... 17

B.3 Inspection in use ........................................................................................................................................... 18

Bibliography ................................................................................................................................................................. 19

---------------------- Page: 5 ----------------------
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.
---------------------- Page: 6 ----------------------
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.
---------------------- Page: 7 ----------------------
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)
---------------------- Page: 8 ----------------------
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
---------------------- Page: 9 ----------------------
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;
---------------------- Page: 10 ----------------------
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

...

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.

---------------------- Page: 1 ----------------------
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.
---------------------- Page: 3 ----------------------
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

---------------------- Page: 4 ----------------------
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
---------------------- Page: 5 ----------------------
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.
---------------------- Page: 6 ----------------------
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)
---------------------- Page: 7 ----------------------
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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oSIST prEN 13411-7:2018
prEN 13411-7:2018 (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 (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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oSIST prEN 13411-7:2018
prEN 13411-7:2018 (E)

• 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

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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prEN 13411-7:2018 (E)
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
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