1、BRITISH STANDARD AEROSPACE SERIES BS EN 3290:1994 Bearings, airframe rolling Singlerowself-aligning roller bearings in steel Diameterseries3 and4 Dimensionsand loads The European Standard EN3290:1994 has the status of a BritishStandard UDC 629.7.02:621.822.8.004.1:621.828:669.14BSEN3290:1994 This Br
2、itishStandard, having been prepared under the directionof the Aerospace Standards Policy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 15September1994 BSI01-2000 The following BSI references relate to the work on this standard: Committee referenceMCE/7 Dra
3、ft for comment88/72196DC ISBN 0 580 21892 9 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Oesterreichisches Normungsinstitut B
4、elgium Institut belge de normalisation Denmark Dansk Standard Finland Suomen Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National
5、 Standards Authority of Ireland Italy Ente Nazionale Italiano di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certifica
6、cin Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBSEN3290:1994 BSI 01-2000 i Contents Page Cooperating organizations Inside front cover National for
7、eword ii Foreword 2 1 Scope 3 2 Normative references 3 3 Definition 3 4 Symbols 3 5 Required characteristics 4 6 Designation 6 7 Marking 6 8 Technical specification 6 National annex NA (informative) Committees responsible Inside back cover National annex NB (informative) Cross-references Inside back
8、 cover Figure 1 4 Table 1 5BSEN3290:1994 ii BSI 01-2000 National foreword This BritishStandard has been prepared under the direction of the Aerospace Standards Policy Committee and is the English language version of EN3290:1994 Aerospace series Bearings, airframe rolling Single row self-aligning rol
9、ler bearings in steel Diameter series3 and4 Dimensions and loads, published by the European Committee for Standardization (CEN). EN3290 was produced as a result of international discussions in which the UnitedKingdom took an active part. A British Standard does not purport to include all the necessa
10、ry 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 obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN titl
11、e page, pages2 to6, 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 amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN3290 June1994 UDC 629.7
12、.02:621.822.8.004.1:621.828:669.14 Descriptors: Aircraft industry, airframe bearings, self-aligning bearings, roller bearings, steel, dimensions, static loads English version Aerospace series Bearings, airframe rolling Single rowself-aligning roller bearings in steel Diameter series3 and4 Dimensions
13、 and loads Srie arospatiale Roulements pour structures daronefs Roulements en acier, rotule, sur une range de rouleaux Sries de diamtres3 et4 Dimensions et charges Luft- und Raumfahrt Flugwerklager Einreihige Tonnenlager aus Stahl Durchmesserreihen3 und4 Mae und Belastungen This European Standard wa
14、s approved by CEN on1994-06-07. 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 bibliographical references concerning such nationa
15、l standards 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 translation under the responsibility of a CEN member into its own language and notif
16、ied to the Central Secretariat has the same status as the official versions. CEN 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 UnitedKingdom.
17、 CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN3290:1994EEN3290:1994 BSI 01-2000 2 Foreword This draft European Standard has been prep
18、ared by the European Association of Aerospace Manufacturers (AECMA). After inquiries 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, p
19、rior to its presentation toCEN. This standard was submitted to formal vote and the result was positive. 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 December1994, and conflicting national stand
20、ards shall be withdrawn at the latest by December1994. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Port
21、ugal, Spain, Sweden, Switzerland and UnitedKingdom.EN3290:1994 BSI 01-2000 3 1 Scope This standard specifies the characteristics of single row self-aligning roller bearings in steel 1)of diameter series3 and4 2)designed to withstand only slow rotations, oscillations and/or swivelling under load. The
22、y are intended for use between fixed and moving parts of the aircraft structure and their control mechanisms. The airframe rolling bearings defined in this standard are used from54 C to+150 C. However, being lubricated with the following greases: very high pressure grease, ester type (code A), opera
23、tional range73 C to+121 C or very high pressure grease, synthetic hydrocarbons, general purpose (code B), operational range 54 C to+177 C (see EN3280), their field of application when lubricated with code A grease is limited to+121 C. 2 Normative references This European Standard incorporates by dat
24、ed or undated reference provisions 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 o
25、nly when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. ISO15, Rolling bearings Radial bearings Boundary dimensions General plan. ISO1132, Rolling bearings Tolerances Definitions. EN2031, Steel FE-PL31 Hardened and tempe
26、red Bars Aerospace series 3) . EN2221, Steel FE-PL31 Hardened and tempered Hollow bars3,5mmk ak 55mm Aerospace series 3) . EN2222, Steel FE-PL31 Hardened and tempered Hand and die forgings Aerospace series 3) . EN3280, Aerospace series Bearings, airframe rolling, rigid or self-aligning Technical spe
27、cification. EN3292, Aerospace series Bearings, airframe rolling Single row self-aligning roller bearings in corrosion resisting steel Diameter series3 and4 Dimensions and loads. 3 Definition For the purposes of this standard, the following definition applies: bearing full complement of rollers (with
28、out cage) 4 Symbols The definitions of tolerances and clearances are given in ISO1132. 1) For new design, use preferably bearings in corrosion resisting steel, see EN3292 2) See ISO15 3) Published as AECMA Standard at the date of publication of this standard % dmp = single plane mean bore diameter d
29、eviation % Dmp = single plane mean outside diameter deviation % ds = deviation of a single bore diameter % Ds = deviation of a single outside diameter G a = axial internal clearance G r = radial internal clearance K ia = radial runout of assembled bearing inner ring K ea = radial runout of assembled
30、 bearing outer ring F a max. = permissible static axial load C s = permissible static radial loadEN3290:1994 4 BSI 01-2000 5 Required characteristics 5.1 Dimensions Tolerances Clearances Loads Mass Configuration: see Figure 1; the bearings are fitted with either seals or shields. Values: see Table 1
31、. 5.2 Surface roughness Raceways and rolling elements: R a =0,24m Bore, side faces and cylindrical outer surface: R a =0,84m. 5.3 Materials P or = static equivalent radial load F a = bearing axial load, axial component of actual bearing load F r = bearing radial load, radial component of actual bear
32、ing load. Inner ring : EN2031 or EN2221 or EN2222,59HRC to64HRC Outer ring : EN2031 or EN2221 or EN2222,59HRC to64HRC Rollers : EN2031,59HRC to64HRC Shields : Corrosion resisting material Seals : Polytetrafluoroethylene (PTFE) or polytetrafluoroethylene (PTFE) reinforced with fibreglass. NOTEThe ins
33、tallation of seals and shields is at the manufacturers option. Figure 1 EN3290:1994 BSI 01-2000 5 Table 1 Table 1 Dimensions in millimetres d B C D d1 min. F max a G max. a Tolerances 4m r Mass kg/1000 parts . Code Nominal % dmp % Dmp % ds % Ds 08 8 17 14 30 14 14 24,9 58 10 10 35 15,7 28 0,3 91 12
34、12 21 17 37 18 18 30,7 to 106 15 15 42 21,8 35,5 0,8 132 17 17 23 19 47 25,1 19 39,3 186 20 20 26 21 52 28 22 44,8 0,3 246 25 25 29 24 62 34,5 25 53,3 to 397 30 30 34 27 72 41,3 30 63 1 610 Internal clearances 4m Runout tolerances radial max.4m Starting torque bin mN.m Permissible static loads c kN
35、d Axial max. G a Radial G r code Special group Code R Group 2 Code K Special group Code R Group 2 Code K K ia K ea Code P Code E Axial F a max. Radial C s 08 190 230 2 to7 7 11 11,1 36,7 10 10 15,5 16,3 53,9 12 200 240 3 to9 10 to20 15 23 18,2 60,2 15 25 40 20 30 21,1 69,6 17 25 38 28,6 94,5 20 220
36、250 30 45 34,3 113,2 25 240 290 3 to10 15 to25 35 52 49 161,7 30 40 60 65,3 215,6 a Dimensions of the shields are at the manufacturers option within the limits of F and G. b Definition, see EN3280. c F r +3,3F a= P or ; P orshall be k C s . For ultimate static loads, see EN 3280. 0 0,12 0 0,12 0 9 +
37、 2 10 + 2 11 0 8 0 11 + 3 11 + 3 14 0 10 0 13 + 3 13 + 4 17EN3290:1994 6 BSI 01-2000 6 Designation EXAMPLE: NOTEIf necessary, the codeI9005 shall be placed between the description block and the identity block. 7 Marking In addition to the manufacturers own marking, each bearing shall be marked, on o
38、ne side face only, using the identity block, see6. Marking position and method are at the manufacturers option. 8 Technical specification See EN3280.BSEN3290:1994 BSI 01-2000 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European S
39、tandard was entrusted by the Aerospace Standards Policy Committee (ACE/-) to Technical CommitteeMCE/7 upon which the following bodies were represented: Ball and Roller Bearing Manufacturers Association Ministry of Defence Society of British Aerospace Companies Ltd. National annex NB (informative) Cr
40、oss-references The BritishStandards corresponding to the International Standards referred to in the text are as follows. International Standard Corresponding British Standard ISO15:1981 BS6267:1982 Specification for rolling bearings: boundary dimensions for radial bearings ISO1132:1980 BS6107 Rollin
41、g bearings: tolerances Part1:1981 Glossary of termsBS EN 3290:1994 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. I
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