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
20-Jan-2009
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
14-Jan-2009
Due Date
21-Mar-2009
Completion Date
21-Jan-2009

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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
SIST EN 2337:2009

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

EN 2337:2006 (E) 2 Contents Page Foreword..........................................................................................................................................................3 1 Scope...................................................................................................................................................4 2 Normative references.........................................................................................................................4 3 Terms and definitions.........................................................................................................................4 4 Required characteristics, inspection and test methods..................................................................4 5 Quality assurance...............................................................................................................................6 6 Packaging............................................................................................................................................7 7 Certificate of compliance....................................................................................................................8 Annex A (normative)

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

SIST EN 2337:2009

EN 2337:2006 (E) 3 Foreword This European Standard (EN 2337:2006) has been prepared by the European Association of Aerospace Manufacturers - Standardization (AECMA-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 AECMA, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2006, and conflicting national standards shall be withdrawn at the latest by November 2006. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This European Standard supersedes EN 2337:1996. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: 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 the United Kingdom. SIST EN 2337:2009

EN 2337:2006 (E) 4 1 Scope 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. 2 Normative references The following referenced documents are indispensable for the application 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 2335, Aerospace series – Bearings, spherical plain in corrosion resisting steel without assembly slot – Dimensions and loads. EN 2336,

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

EN 2337:2006 (E) 5 Table 1 Subclause Characteristics Requirements Inspection and test methods Q a A b 4.1 Materials In accordance with the product standards or design documentation Chemical analysis or certificate 2.1 according to EN 10204 issued by semi-finished products manufacturer X X 4.2 Dimensions In accordance with the product standards or design documentation Suitable measuring instruments Measurement of bore and outer diameter:  Rings with a width of ≤ 10 mm: in the centre plane.  Rings with a width of > 10 mm: in two planes parallel to the outer faces and at a distance from these faces of twice the maximum value of the ring chamfer. The minimum and maximum diameters are determined in each measuring plane. Measurement of ring width:  The width of each ring (distance between the two faces) is verified at a minimum of four points. X X 4.3 Masses In accordance with the product standards or design documentation Suitable methods X

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)

SIST EN 2337:2009

EN 2337:2006 (E) 6 Table 1 (concluded) Subclause Characteristics Requirements Inspection and test methods Q a A b 4.7 Surface roughness In accordance with the product standards or design documentation Suitable measuring instruments or visual-tactile samples X X 4.8 Lubrication In accordance with the product standards or design documentation. Visual inspection X X

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

EN 2337:2006 (E) 7 Qualification shall be obtained for each bearing. However, "de facto" qualification of a bearing is acquired if it has been obtained for the bearing immediately before and the one immediately after the bearing in question within the range of bearings indicated in the product standard. 5.2 Acceptance conditions 5.2.1 Inspections and tests to be carried out by the manufacturer See Table 4. 5.2.2 Purchaser's (user's) quality control The purchaser (user) may, on acceptance of a delivery batch, proceed to inspect it by using the inspections specified in Table 4, in full or in part, to ensure that the items conform to the required quality level, and to determine whether the delivery batch is acceptable. This inspection may be carried out in the purchaser's (user's) factory, or, by special agreement, in the manufacturer's factory. 6 Packaging The bearings shall be packaged either individually or in rolls so that they will not be damaged during transportation. They shall be protected against moisture, corrosion, dirt and other harmful substances. The packaging material in contact with the bearing shall provide this protection and be grease-resistant. The following indications shall be affixed to each individual package:  manufacturer's name and address;  quantity (for rolls);  identity block as defined by product standards or design documentation;  packaging date;  lubrication date. The following indications at least shall appear on collective packaging:  manufacturer's name and address;  number of order;  quantity;  identity block(s) as defined by the product standards or design documentation. SIST EN 2337:2009

EN 2337:2006 (E) 8 7 Certificate of compliance All the bearings supplied in accordance with this standard shall be accompanied by a certificate of compliance according to EN 10204, 2.1 or 3.1 issued by the manufacturer for each production batch. Table 2 — Non-destructive inspec

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