1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 3280:2011Aerospace series Bearings, airframe rolling, rigid or self-aligning T e c h n i c a l s p e c i f i c a t i o nBS EN 3280:2011 BRITISH STANDARDNational forewordThi
2、s British Standard is the UK implementation of EN 3280:2011. It supersedes BS EN 3280:1994, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems.A list of organizations represented on this committee can be o
3、btained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011 ISBN 978 0 580 74015 2 ICS 49.035 Compliance with a British Standard cannot confer immunity from legal obligations.
4、This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2011.Amendments issued since publicationDate T e x t a f f e c t e dBS EN 3280:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3280 May 2011 ICS 49.035 Supersedes EN 3280:1994Eng
5、lish Version Aerospace series - Bearings, airframe rolling, rigid or self-aligning - Technical specification Srie arospatiale - Roulements pour structure daronefs, rigides ou rotule - Spcification technique Luft- und Raumfahrt - Flugwerklager Wlzlager, Rillenkugellager oder Pendellager - Technische
6、Lieferbedingungen This European Standard was approved by CEN on 17 March 2011. 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 bib
7、liographical 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 respo
8、nsibility 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, Gr
9、eece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Manage
10、ment Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3280:2011: EBS EN 3280:2011EN 3280:2011 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .54
11、Required characteristics, inspection and test methods 75 Quality assurances 96 Packaging .97 Certificate of conformity 10Annex A (normative) Retention test for self-aligning bearing seals and shields 11Annex B (normative) Sand and dust test . 13Annex C (normative) Test on the running behaviour of th
12、e bearings, retention of seals and shields at the limit temperatures. 14Annex D (normative) Verification of running accuracy 15Annex E (normative) Verification of internal clearances 18Annex F (normative) Verification of permissible and ultimate static loads 23Annex G (normative) Lubricants Essentia
13、l characteristics 28Annex H (normative) Simplified qualification procedure . 29Bibliography . 34BS EN 3280:2011EN 3280:2011 (E) 3 Foreword This document (EN 3280:2011) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and vo
14、tes 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, prior to its presentation to CEN. This European Standard shall be given the status of a national standard,
15、either by publication of an identical text or by endorsement, at the latest by November 2011, and conflicting national standards shall be withdrawn at the latest by November 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CE
16、N and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 3280:1994. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austr
17、ia, Belgium, Bulgaria, Croatia, 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. B
18、S EN 3280:2011EN 3280:2011 (E) 4 1 Scope This European Standard specifies the required characteristics, inspection and test methods, qualification and acceptance conditions for rigid or self-aligning airframe rolling bearings. 2 Normative references The following referenced documents are indispensab
19、le 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 2063, Aerospace series Airframe rolling bearings Technical specifications EN 3045, Aerospace ser
20、ies Bearings, airframe rolling Rigid single row ball bearings in steel Diameter series 0 and 2 Reduced clearance category Dimensions and loads EN 3046, Aerospace series Bearings, airframe rolling Rigid single row ball bearings in steel, cadmium plated Diameter series 0 and 2 Reduced clearance catego
21、ry Dimensions and loads EN 3047, Aerospace series Bearings, airframe rolling Rigid single row ball bearings in corrosion resisting steel Diameter series 0 and 2 Reduced clearance category Dimensions and loads EN 3053, Aerospace series Bearings, airframe rolling Single row self-aligning roller bearin
22、gs in steel Dimensions and loads EN 3054, Aerospace series Bearings, airframe rolling Single row self-aligning roller bearings in steel, cadmium plated Dimensions and loads EN 3055, Aerospace series Bearings, airframe rolling Single row self-aligning roller bearings in corrosion resisting steel Dime
23、nsions and loads EN 3056, Aerospace series Bearings, airframe rolling Rigid double row ball bearings in steel Dimensions and loads EN 3057, Aerospace series Bearings, airframe rolling Rigid double row ball bearings in steel, cadmium plated Dimensions and loads EN 3058, Aerospace series Bearings, air
24、frame rolling Rigid double row ball bearings in corrosion resisting steel Dimensions and loads EN 3281, Aerospace series Bearings, airframe rolling Rigid single row ball bearings in steel Diameter series 8 and 9 Dimensions and loads EN 3282, Aerospace series Bearings, airframe rolling Rigid single r
25、ow ball bearings in steel, cadmium plated Diameter series 8 and 9 Dimensions and loads EN 3283, Aerospace series Bearings, airframe rolling Rigid single row ball bearings in corrosion resisting steel Diameter series 8 and 9 Dimensions and loads EN 3284, Aerospace series Bearings, airframe rolling Ri
26、gid single row ball bearings in steel Diameter series 0 and 2 Normal clearance category Dimensions and loads EN 3285, Aerospace series Bearings, airframe rolling Rigid single row ball bearings in steel, cadmium plated Diameter series 0 and 2 Normal clearance category Dimensions and loads BS EN 3280:
27、2011EN 3280:2011 (E) 5 EN 3286, Aerospace series Bearings, airframe rolling Rigid single row ball bearings in corrosion resisting steel Diameter series 0 and 2 Normal clearance category Dimensions and loads EN 3287, Aerospace series Bearings, airframe rolling Double row self-aligning ball bearings i
28、n steel Diameter series 2 Dimensions and loads EN 3288, Aerospace series Bearings, airframe rolling Double row self-aligning ball bearings in steel cadmium plated Diameter series 2 Dimensions and loads EN 3289, Aerospace series Bearings, airframe rolling Double row self-aligning ball bearings in cor
29、rosion resisting steel Diameter series 2 Dimensions and loads EN 3290, Aerospace series Bearings, airframe rolling Single row self-aligning roller bearings in steel Diameter series 3 and 4 Dimensions and loads EN 3291, Aerospace series Bearings, airframe rolling Single row self-aligning roller beari
30、ngs in steel, cadmium plated Diameter series 3 and 4 Dimensions and loads EN 3292, Aerospace series Bearings, airframe rolling Single row self-aligning roller bearings in corrosion resisting steel Diameter series 3 and 4 Dimensions and loads EN 4033, Aerospace series Bearings, airframe rolling Rigid
31、 single row ball bearings in corrosion resisting steel Diameter series 8 and 9, reduced internal radial clearance Dimensions and loads EN 4034, Aerospace series Bearings, airframe rolling Double row self-aligning ball bearings with flanged outer ring in corrosion resisting steel, reduced internal ra
32、dial clearance Dimensions and loads EN 9100, Quality Management Systems Requirements for Aviation, Space and Defence Organizations EN 9133, Aerospace series Quality management systems Qualification procedure for aerospace standard parts ISO 1132-1:2000, Rolling bearings Tolerances Part 1: Terms and
33、definitions 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 rolling bearings, rigid or self-aligning 3.1.1 general these bearings have a full complement of balls or rollers 3.1.2 shielded rolling bearing bearing whose rolling elements and rac
34、eways are protected with shields attached to one of the rings and separated from the other by a small space 3.1.3 sealed rolling bearing bearing whose rolling elements and raceways are completely enclosed by seals attached to one of the rings and rubbing on the other BS EN 3280:2011EN 3280:2011 (E)
35、6 3.2 surface discontinuities 3.2.1 crack break in the material which may extend in all directions and be intercrystalline or transcrystalline in character 3.2.2 score, scratch open surface defect 3.2.3 lap surface defect where particles of metal or sharp edges are folded over and then rolled or for
36、ged into the surface 3.2.4 seam unwelded fold which appears as an defect in the material 3.3 radial (Kia, Kea) and axial (Sia, Sea) running accuracy see ISO 1132-1:2000 3.4 internal clearances 3.4.1 radial (Gr) total value of possible radial displacements of one ring in relation to the other 3.4.2 a
37、xial (Ga) total value of possible axial displacements of one ring in relation to the other 3.4.3 diagonal (Gd) value of total cant of the inner ring in relation to the outer ring 3.5 starting torque at zero load maximum torque required to start the rotation of the outer ring with the inner ring held
38、 stationary 3.6 delivery batch batch of bearings with the same identity block, which may come from different production batches BS EN 3280:2011EN 3280:2011 (E) 7 4 Required characteristics, inspection and test methods See Table 1. Table 1 Clause Characteristics Requirements Inspection and test metho
39、ds Q a Ab4.1 Materials In accordance with the product standards or design documentation. Chemical analysis or certificate issued by semi-finished product manufacturer X X 4.2 Dimensions and tolerances In accordance with the product standards or design documentation. Suitable measuring instruments Me
40、asurement 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 shall be determined
41、in each measuring plane. Measurement of ring width: - The width of each ring (distance between the two faces) shall be 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
42、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 No surface discontinuities liable to have an adverse effect on their characteristics and endurance. X X 4.5.1 Assembled
43、bearings Visual inspection using suitable methods 4.5.2 Unassembled rings Magnetic or dye penetrant inspection 4.5.3 Rolling element See 4.5.1. Rolling element must be supplied with certificate of conformity. X X 4.6 Hardness In accordance with the product standards or design documentation. Suitable
44、 processes and measuring instruments c X X 4.7 Surface roughness In accordance with product standards or design documentation. Suitable measuring instruments or visual-tactile samplescX X 4.8 Surface treatment In accordance with product standards or design documentation. - Visual inspection - As per
45、 surface treatment standard X X 4.9 Lubrication At least 80 % of the free space in the bearing shall be charged with the grease specified in the product standards or design documentation (see Annex G). Visual inspection after removal of seals or shields X Visual inspection during manufacture X 4.10
46、Seals (for sealed bearings) and shields (for shielded bearings) continued BS EN 3280:2011EN 3280:2011 (E) 8 Table 1 (concluded) Clause Characteristics Requirements Inspection and test methods Q a Ab 4.10.1 Retention All bearings: - The seals and shields shall be fitted correctly on the outer ring, i
47、n such a way that the functioning of the bearing is not affected. Visual inspection X X Self-aligning bearings: - After the test, the seals and shields shall not have loosened or become deformed. See Annex A. 4.10.2 Sealing The seals shall: rub on the inner ring and retain the grease Visual inspecti
48、on after the rings are manually turned in relation to each other. X X The seals shall: prevent the penetration of foreign bodies. After the test, the running behaviour of the bearings shall conform with 4.13.1. See Annex B. X 4.10.3 Temperature test After the test, the behaviour shall conform with 4
49、.10.1. See Annex C. X 4.11 Running accuracy: - radial: KjaKea - axial: SiaSeaIn accordance with the product standards or design documentation. See Annex D. X X 4.12 Internal clearances: - radial: Gr - axial: Ga - diagonal: GdIn accordance with the product standards or design documentation. See Annex E. X X 4.13 Behaviour in ro
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