EN 2337:2006

Aerospace series - Spherical plain bearings - Technical specification

This standard specifies the required characteristics, inspection and test methods, qualification and acceptance conditions for spherical plain bearings designed to withstand static loads and loads with slight swivelling.
It is applicable whenever referenced.

Luft- und Raumfahrt - Gelenklager - Technische Lieferbedingungen

Diese Norm legt die Anforderungen, Prüfverfahren, Qualifikations- und Annahmebedingungen für Gelenklager fest, die so ausgelegt sind, dass sie statischen Belastungen und geringen Kippbelastungen standhalten.
Sie ist immer anzuwenden, wenn auf sie verwiesen wird.

Série aérospatiale - Rotules lisses - Spécification technique

Aeronavtika - Kroglasti drsni zgibi - Tehnična specifikacija

General Information

• Status: Published
• Publication Date: 16-May-2006
• Withdrawal Date: 29-Nov-2006
• ICS: 49.035 - Components for aerospace construction
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 3 - Mechanical
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Completion Date: 31-May-2017
• Ref Project: SIST EN 2337:2009 - Aerospace series - Spherical plain bearings - Technical specification

Relations

• Replaces: EN 2337:1996 - Aerospace series - Spherical plain bearings - Technical specification
• Effective Date: 22-Dec-2008

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Gelenklager - Technische LieferbedingungenSérie aérospatiale - Rotules lisses - Spécification techniqueAerospace series - Spherical plain bearings - Technical specification49.035Sestavni deli za letalsko in vesoljsko gradnjoComponents for aerospace constructionICS:Ta slovenski standard je istoveten z:EN 2337:2006SIST EN 2337:2009en,de01-marec-2009SIST EN 2337:2009SLOVENSKI
STANDARDSIST EN 2337:20011DGRPHãþD

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 2337May 2006ICS 49.035Supersedes EN 2337:1996
English VersionAerospace series - Spherical plain bearings - TechnicalspecificationSérie aérospatiale - Rotules lisses - Spécification techniqueLuft- und Raumfahrt - Gelenklager - TechnischeLieferbedingungenThis European Standard was approved by CEN on 26 October 2005.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 2337:2006: ESIST EN 2337:2009

Verification of internal clearance.10 Annex B (normative)
Verification of permissible and ultimate static loads.13 Annex C (normative)
Lubricants – Essential characteristics.17 Annex D (normative)
Simplified qualification procedure.18
Aerospace series – Bearings, spherical plain in steel with assembly slots – Dimensions and loads. EN 2588, Aerospace series – Bearings, spherical plain in corrosion resisting steel with assembly slots – Dimensions and loads. EN 4265, Aerospace series – Bearings, spherical plain, in corrosion resisting steel – Wide series – Dimensions and loads – Inch series. 1) EN 4266, Aerospace series – Bearings, spherical plain, in corrosion resisting steel, cadmium plated – Wide series – Dimensions and loads – Inch series. 1) EN 6046, Aerospace series – Bearings, spherical plain, in corrosion resisting steel – Narrow series – Dimensions and loads – Inch series. 1) EN 9100, Aerospace series – Quality management systems – Requirements (based on ISO 9001:2000) and Quality systems – Model for quality assurance in design, development, production, installation and servicing (based on ISO 9001:1994). EN 9133, Aerospace series – Quality management systems – Qualification Procedure for aerospace standard parts. EN 10204, Metallic products – Types of inspection documents. TR 4475, Aerospace series – Bearings and mechanical transmissions for airframe applications – Vocabulary. 2) 3 Terms and definitions For the purposes of this standard, the terms and definitions given in TR 4475 apply. 4 Required characteristics, inspection and test methods See Table 1.
1) Published as AECMA Prestandard at the date of publication of this standard. 2) Published as AECMA Technical Report at the date of publication of this standard. SIST EN 2337:2009

4.4 Marking In accordance with the product standards or design documentation. It shall be legible and shall not adversely affect the material or the functioning of the bearing. Visual examination X X 4.5 Surface appearance
4.5.1 Assembled spherical bearings Visual examination using suitable methods X X 4.5.2 Unassembled rings The bearing shall be free of surface discontinuities liable to have an adverse effect on their characteristics and endurance. Magnetic or dye penetrant inspection X X 4.6 Hardness In accordance with the product standards or design documentation Suitable processes and measuring instruments X X (continued)
The dry lubricant shall be compatible with the code A or code B grease (see Annex C) which may be used in accordance with the product standards or design documentation. Suitable method
4.9 Internal clearance:  radial  axial In accordance with the product standards or design documentation See Annex A X X 4.10 Behaviour in rotation and swivelling The bearings shall be able to move freely within the angular limits specified in the product standards or design documentation for swivelling. Manual inspection X X 4.11 Permissible static loads: In accordance with the product standards or design documentation See Annex B X
 radial: Cs After the removal of the loads, no permanent deformations > 0,07 mm
 axial: Ca After the removal of the loads, no permanent deformations > 0,10 mm
4.12 Ultimate static loads:  radial  axial After the removal of the loads, there shall be no cracks or deterioration of the bearing See Annex B X
a Q: Qualification test b A: Acceptance test
5 Quality assurance 5.1 Product qualification According to EN 9133 and Tables 2 and 3 and Annex D. SIST EN 2337:2009

Table 3 — Destructive inspections and tests to be carried out for qualification Serial number of samples Types of inspections and tests a Defined in subclause 1 2 3 4 5 permissible (Cs) 4.11 – X X X – radial ultimate 4.12 X X X – – permissible (Ca) 4.11 – X X X – Test under static load axial ultimate 4.12 – – – X X a The order is left to the initiative of the qualification authority.
Verification of internal clearance
A.1 Radial internal clearance A.1.1 Principle According to Figure A.1, as an example. A.1.2 Method  Mount the bearing vertically and immobilize the inner ring (in the case of a bearing with assembly slots, the direction of application of the load shall be at 90° to the slot centre line).  Place a dial gauge in the radial plane of the bearing.  Apply the load F (see Table A.1) in the direction of the dial gauge and then in the opposite d
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