1、BRITISH STANDARD AEROSPACE SERIES BS EN 2067:1996 Rod ends with self-aligning ball bearings Technical specification The European Standard EN 2067:1996 has the status of a British Standard ICS 49.040.30BSEN2067:1996 This British Standard, having been prepared under the directionof the Engineering Sec
2、torBoard, was published underthe authority of the Standards Board and comes intoeffect on 15 June 1996 BSI 11-1999 The following BSI references relate to the work on this standard: Committee reference ACE/14 Draft for comment 89/70706 DC ISBN 0 580 25658 8 Committees responsible for this British Sta
3、ndard The preparation of this British Standard was entrusted to Technical Committee ACE/14, Aerospace details and parts, upon which the following bodies were represented: British Iron and Steel Producers Association Civil Aviation Authority (Airworthiness Division) Federation of Wire Rope Manufactur
4、ers of Great Britain Institute of Petroleum Ministry of Defence Society of British Aerospace Companies Stainless Steel Wire Industry Association Amendments issued since publication Amd. No. Date CommentsBSEN2067:1996 BSI 11-1999 i Contents Page Committees responsible Inside front cover National fore
5、word ii Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 3 4 Required characteristics, inspection and test methods 3 5 Quality assurance 8 6 Packaging 8 7 Certificate of conformity 8 Annex A (normative) Retention test for seals and shields 10 Annex B (normative) Sealing Sand and dust test
6、 11 Annex C (normative) Test on the running behaviour of the rod ends, retention of seals and shields at the limit temperatures 11 Annex D (normative) Verification of internal clearances 12 Annex E (normative) Verification of permissible and ultimate loads 14 Annex F (normative) Lubricants Essential
7、 characteristics 16 Figure 1 Discontinuities on threads flank 7 Figure 2 Discontinuities on threads flank 7 Figure A.1 10 Figure A.2 10 Figure D.1 12 Figure D.2 13 Figure E.1 15 Figure E.2 16 Table 1 4 Table 2 Non-destructive inspections and tests to be carried out for qualification 8 Table 3 Destru
8、ctive inspections and tests to be carried out for qualification 9 Table 4 Inspections and tests to be carried out for acceptance 9 Table D.1 13 Table D.2 14 List of references Inside back coverBSEN2067:1996 ii BSI 11-1999 National foreword This British Standard has been prepared by Technical Committ
9、ee ACE/14 and is the English language version of EN2067:1996 Aerospace series Rod ends with self-aligning ball bearings Technical specification, including corrigendum, published by the European Committee for Standardization (CEN). EN 2067:1996 was produced as a result of international discussions in
10、 which the United Kingdom took an active part. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligat
11、ions. Cross-references Publication referred to Corresponding British Standard BS 6293 Aerospace. MJ threads. ISO 5885-1 Part 1:1994 General requirements ISO 5885-2 Part 2:1994 Limit dimensions for bolts and nuts EN 3042 BS EN 3042:1992 Quality assurance. EN aerospace products. Qualification procedur
12、e Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN title page, pages 2 to 16, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendme
13、nt table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2067 January 1996 ICS 49.040.30 Descriptors: Aircraft industry, aircraft control, rod-end, rod-end with self-aligning ball bearing, threaded shank, specification English version Aerospace series Rod ends with sel
14、f-aligning ball bearings Technical specification Srie arospatiale Embouts rotule sur billes Spcification technique Luft- und Raumfahrt senkpfe mit Pendelkugellager Technische Lieferbedingungen This European Standard was approved by CEN on 1995-08-31. CEN members are bound to comply with the CEN/CENE
15、LEC 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 Central Secretariat or to any C
16、EN 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 Central Secretariat has the same status as the official versions. CEN
17、members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europ
18、isches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1996 Copyright reserved to CEN members Ref. No. EN 2067:1996 EEN2067:1996 BSI 11-1999 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries
19、 and votes carried out in accordance with the rules of this Association, this Standard has successively received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation toCEN. This European Standard shall be given the status of
20、a national standard, either by publication of an identical text or by endorsement, at the latest by July1996, and conflicting national standards shall be withdrawn at the latest by July1996. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this Europe
21、an Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom.EN2067:1996 BSI 11-1999 3 1 Scope This standard specifies the required characteristics, inspection and test methods
22、, qualification and acceptance conditions for rod ends with self-aligning ball bearings designed to withstand (under load) slight swivelling and slow rotations only. It is applicable whenever referenced. 2 Normative references This European Standard incorporates by dated or undated reference provisi
23、ons from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by
24、amendment or revision. For undated references the latest edition of the publication referred to applies. ISO 5855-1, Aerospace MJ threads Part1:General requirements. ISO 5855-2, Aerospace MJ threads Part2:Limit dimensions for bolts and nuts. EN 2002-16, Aerospace series Test methods for metallic mat
25、erials Part 16: Dye penetrant testing 1) . EN 3042, Aerospace series Quality assurance EN aerospace products Qualification procedure. 3 Definitions For the purposes of this standard, the following definitions apply: 3.1 Surface discontinuities 3.1.1 crack break in the material which may extend in al
26、l directions and be intercrystalline or transcrystalline in character 3.1.2 score, scratch open surface defect 3.1.3 lap surface defect where particles of metal or sharp edges are folded over and then rolled or forged into the surface 3.1.4 seam unwelded fold which appears as an open defect in the m
27、aterial 3.2 Internal clearances 3.2.1 radial total value of possible radial displacements of the inner ring in relation to the rod end body 3.2.2 axial total value of possible axial displacements of the inner ring in relation to the rod end body 3.3 starting torque at zero load maximum torque requir
28、ed to start the rotation of the inner ring of the bearing, with the rod end body held stationary 3.4 production batch batch consisting of rod ends of the same type, the same dimensions and from the same materials batch, defined by the same product standard 3.5 delivery batch batch consisting of rod
29、ends with the same identity block which may come from different production batches 4 Required characteristics, inspection and test methods SeeTable 1. 1) In preparation at the date of publication of this standardEN2067:1996 4 BSI 11-1999 Table 1 Sub-clause Characteristics Requirements Inspection and
30、 test methods Q a A b 4.1 Materials Shall conform with the product standards or design documentation Chemical analysis or certificate of conformity issued by semi-finished products manufacturer 4.2 Dimensions and tolerances Shall conform with the product standards or design documentation Suitable me
31、asuring instruments 4.3 Mass Shall conform with the product standards or design documentation Suitable methods 4.4 Marking Shall conform with the product standards or design documentation. It shall be legible and shall not alter the material or the functioning of the rod end. Visual examination 4.5
32、Surface appearance c 4.5.1 of rod end body (except thread) No surface discontinuity Suitable inspection methods Look for seams and cracks by dye penetrant process according to EN2002-16 or magnetic process. 4.5.2 of the inner ring and balls No surface discontinuity liable to alter the characteristic
33、s and endurance of these parts Magnetic or dye penetrant inspection 4.6 Grooves Shall not change the thread function Visual examination and threaded gauge c 4.7 Hardness Shall conform with the product standards or design documentation Suitable processes and measuring instruments c 4.8 Surface roughn
34、ess Shall conform with the product standards or design documentation Suitable measuring instruments or visual-tactile samples 4.9 Surface treatment Shall conform with the product standards or design documentation Visual inspection As per surface treatment standard c 4.10 Thread discontinuities SeeFi
35、gure 1 andFigure 2 Examination of micrographic sectionfor: qualification: on finished parts; acceptance: by sampling during manufacture. EN2067:1996 BSI 11-1999 5 Table 1 Sub-clause Characteristics Requirements Inspection and test methods Q a A b 4.11 Lubrication At least 80% of the free space in th
36、e rod end head shall be charged with the grease specified in the product standards or design documentation (seeAnnex F). Visual examination after removal of seals and shields Visual examination during manufacture 4.12 Seals and shields 4.12.1 Retention The seals and shields shall be fitted correctly
37、 on the rod end body, in such a way that the functioning of the self-aligning ball bearing is not affected. Visual examination After the test, the seals and shields shall not have loosened or become deformed. SeeAnnex A. 4.12.2 Sealing The seals shall: Visual examination after the inner ring is turn
38、ed manually in relation to the rod end body. rub on the inner ring and retain the grease; prevent the penetration of foreign bodies. After the test, the running behaviour of the rod ends shall conform with 4.14.1. SeeAnnex B. 4.12.3 Temperature test After the test, the behaviour shall conform with 4
39、.12.1. SeeAnnex C. 4.13 Internal clearances: radial; axial Shall conform with the product standards or design documentation SeeAnnex D. 4.14 Behaviour in rotation 4.14.1 At ambient temperature No tight spots Manually rotating and oscillating the inner ring 4.14.2 At limit temperatures After the test
40、, the mean starting torque shall not exceed 1,5 times the mean of the values recorded before the test. SeeAnnex C. No tight spots Manually rotating and oscillating the inner ringEN2067:1996 6 BSI 11-1999 Table 1 Sub-clause Characteristics Requirements Inspection and test methods Q a A b 4.15 Startin
41、g torque at zero load Shall conform with the product standards or design documentation Suitable procedures and measuring instruments Rotate the inner ring at least four times to distribute the lubricant evenly. Measure at least five times the torque applied progressively to the inner ring of the bea
42、ring, in both directions, with the rod end held stationary. Only the highest value shall be taken into account. 4.16 Permissible static loads: radial: C s ; axial: F a Shall conform with the product standards or design documentation After the removal of the loads, no permanent deformations: affectin
43、g the behaviour of the rod end in rotation and oscillation (see4.14.1); increasing the inner radial clearance by more than 5 m; increasing the inner axial clearance by more than15m. SeeAnnex E. 4.17 Ultimate static loads: radial; axial After the removal of the loads, there shall be no cracks or dete
44、rioration of the rod end. SeeAnnex E. a Q = Qualification test b A = Acceptance test c These inspections shall be made in the absence of surface treatment, which, for the purpose of qualification, may be removed by a chemical process.EN2067:1996 BSI 11-1999 7 1)See ISO 5855-1. 2)See ISO 5855-2. Figu
45、re 1 Discontinuities on threads flank 1)See ISO 5855-1. 2)See ISO 5855-2. Figure 2 Discontinuities on threads flankEN2067:1996 8 BSI 11-1999 5 Quality assurance 5.1 Product qualification See EN3042 and Table 2 andTable 3. Qualification shall be obtained for each rod end. 5.2 Acceptance conditions 5.
46、2.1 Inspections and tests to be carried out by the manufacturer SeeTable 4. 5.2.2 Users quality control The user may, on acceptance of a delivery batch, proceed to inspect it by using the inspections specified inTable 4, in full or in part, to ensure that the items conform to the required quality le
47、vel, and to determine whether the delivery batch is acceptable. This inspection can be carried out in the users factory, or by special agreement with the manufacturer in the manufacturers factory. 6 Packaging The rod ends shall be packaged individually and in such a way that they will not be damaged
48、 during transportation. They shall be protected against moisture, corrosion, dirt and other harmful substance. 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
49、s name and address; identity block as defined by product standards or design documentation; packaging date; lubrication date. The following indications at least shall appear on collective packaging: manufacturers name and address; number of order; quantity; identity block(s) as defined by product standards or design documentation. 7 Certificate of conformity All the rod en
