oSIST prEN 4157:2020

SLOVENSKI STANDARD
01-november-2020
Aeronavtika - Ušesna glava (vrh palice) s samoporavnavnimi (nihalnimi)
dvorednimi krogličnimi ležaji in držaji z navoji iz jekla - Mere in obremenitve -
Palčne mere
Aerospace series - Rod end, with self-aligning double row ball bearings and threaded
shank in steel - Dimensions and loads - Inch series
Luft- und Raumfahrt - Ösenköpfe mit zweireihigem Pendelkugellager und Gewindeschaft
aus Stahl - Maße und Belastungen; Inch-Reihe
Série aérospatiale - Embout à roulement à rotule sur deux rangées de billes et tige
filetée en acier - Dimensions et charges, série en inches
Ta slovenski standard je istoveten z: prEN 4157
ICS:
49.035 Sestavni deli za letalsko in Components for aerospace
vesoljsko gradnjo construction
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2020
ICS
English Version
Aerospace series - Rod end, with self-aligning double row
ball bearings and threaded shank in steel - Dimensions and
loads, Inch series
Série aérospatiale - Embout à roulement à rotule sur Luft- und Raumfahrt - Ösenköpfe mit zweireihigem
deux rangées de billes et tige filetée en acier - Pendelkugellager und Gewindeschaft aus Stahl - Maße
Dimensions et charges, série en inches und Belastungen; Inch-Reihe
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ASD-
STAN.
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, 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.
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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 4157:2020 E
worldwide for CEN national Members.

Contents
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms, definitions and symbols . 4
3.1 Terms and definitions . 4
3.2 Symbols . 5
4 Requirements . 5
4.1 Dimensions, tolerances and masses . 5
4.2 Surface roughness . 5
4.3 Materials . 5
4.4 Surface treatment . 5
4.5 Loads, starting torques and clearances. 9
4.6 Retention of seals or shields . 10
4.7 Temperature range and lubricant . 10
5 Designation. 10
6 Marking . 11
7 Technical specification . 11
8 Quality management systems . 11
Bibliography . 12

European foreword
This document (prEN 4157:2020) has been prepared by the Aerospace and Defence Industries
Association of Europe - Standardization (ASD-STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this Standard has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, prior to its presentation to CEN.
This document is currently submitted to the CEN Enquiry.
1 Scope
This document specifies the characteristics of adjustable rod-ends with self-aligning double row ball
bearing and threaded shank in steel.
They consist of:
— a rod-end comprising:
— either seals or shields;
— an optional longitudinal groove for locking purpose;
— an inner ring with balls.
These rod-ends are intended for use with flight control rods or rods for aerospace structures.
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 2031, Aerospace series - Steel 102Cr6 (1.2067) - Hardened and tempered - Bars
EN 2067:1996, Aerospace series - Rod ends with self-aligning ball bearings - Technical specification
EN 2133, Aerospace series - Cadmium plating of steels with specified tensile strength ≤ 1 450 MPa, copper,
copper alloys and nickel alloys
EN 2135, Aerospace series - Steel FE-PL61 - Carburized, hardened and tempered - Bar - De ≤ 40 mm
EN 2424, Aerospace series - Marking of aerospace products
ISO 3161, Aerospace — UNJ threads — General requirements and limit dimensions
TR 4475, Bearings and mechanical transmissions for airframe applications — Vocabulary
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in TR 4475 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
NOTE The d
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