1、BRITISH STANDARD AEROSPACE SERIES BS EN 3285:1994 Bearings, airframe rolling Rigid single row ball bearings in steel, cadmium plated Diameter series0 and2 Normal clearance category Dimensions and loads The European Standard EN3285:1994 has the status of a BritishStandard UDC 629.7.02:621.822.74.004.
2、1:669.14.669.738BSEN 3285:1994 This British Standard, having been prepared under the directionof the Aerospace Standards Policy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 15August1994 BSI 01-2000 The following BSI references relate to the work on this s
3、tandard: Committee reference MCE/7 Draft for comment 88/72196 DC ISBN 0 580 21887 2 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: Aust
4、ria Oesterreichisches Normungsinstitut Belgium 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 Technologic
5、al Institute of Iceland Ireland National 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 Asoci
6、acin Espaola de Normalizacin y Certificacin Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation UnitedKingdom BritishStandards Institution Amendments issued since publication Amd. No. Date CommentsBSEN 3285:1994 BSI 01-2000 i Contents Page Cooperating organi
7、zations Inside front cover National foreword 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 (in
8、formative) Cross-references Inside back cover Figure 1 5 Table 1 5BSEN 3285:1994 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 EN3285:1994 Aerospace series Bearings, airfr
9、ame rolling Rigid single row ball bearings in steel, cadmium plated Diameter series0 and2 Normal clearance category Dimensions and loads, published by the European Committee for Standardization (CEN). EN3285 was produced as a result of international discussions in which the UnitedKingdom took an act
10、ive 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 obligations. Summary of pages This document
11、comprises a front cover, an inside front cover, pagesi andii, the EN title 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.EU
12、ROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3285 May 1994 UDC 629.7.02:621.822.74.004.1:669.14:669.738 Descriptors: Aircraft industry, airframe bearings, ball bearings, steel, cadmium dimensions, static loads English version Aerospace series Bearings, airframe rolling Rigid single row ball be
13、arings in steel cadmium plated Diameter series0 and2 Normal clearance category Dimensions and loads Srie arospatiale Roulements pour structures d aronefs Roulements en acier, cadmis, rigides, une range de billes Sries de diamtres0 et2 Catgorie jeux normaux Dimensions et charges Luft- und Raumfahrt F
14、lugwerklager Einreihige Rillenkugellager aus Stahl, verkadmet Durchmesserreihen0 und2 Normale Lagerluft Mae und Belastungen This European Standard was approved by CEN on1994-05-19. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving thi
15、s 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 CEN member. This European Standard exists in three official versions (E
16、nglish, 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 members are the national standards bodies of Austria, Belgium, Denmark
17、, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-10
18、50 Brussels CEN1994 Copyright reserved to all CEN members Ref. No. EN3285:1994 EEN 3285:1994 BSI 01-2000 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out in accordance with the rules of this Asso
19、ciation, 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 to CEN. This standard was submitted for formal vote, and the result was positive. This European Standard shall be given the
20、 status of a national standard, either by publication of an identical text or by endorsement, at the latest by November1994 and conflicting national standards shall be withdrawn at the latest by November1994. According to the CEN/CENELEC Internal Regulations, the following countries are bound to imp
21、lement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, UnitedKingdom.EN 3285:1994 BSI 01-2000 3 1 Scope This standard specifies the characteristics of rigid single row
22、 ball bearings in steel 1) , cadmium plated, of diameter series0 and2 2)designed to withstand only slow rotations and oscillations under load. They are intended for use between fixed and moving parts of the aircraft structure and their control mechanisms. The airframe rolling bearings defined in thi
23、s standard are used from54 C to+150 C. However, being lubricated with the following greases: very high pressure grease, ester type (code A), operational range73 C to+121 C or very high pressure grease, synthetic hydrocarbons, general purpose (code B), operational range54 C to+177 C (see EN3280), the
24、ir field of application when lubricated with code A grease is limited to+121 C. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications
25、 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 amendment or revision. For undated references the latest edition of the publication referred to applies. ISO15, Rolling bear
26、ings Radial bearings Boundary dimensions General plan. ISO1132, Rolling bearings Tolerances Definitions. EN2031, Steel FE-PL31 Hardened and tempered Bars Aerospace series 3) . EN2133, Cadmium plating of steels with maximum specified tensile strength equal to or less than1450MPa and copper and copper
27、 alloys 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 spec
28、ification. EN3286, Aerospace series Bearings, airframe rolling Rigid single row ball bearings in corrosion resisting steel Diameter series0 and2 Normal clearance category Dimensions and loads. 3 Definition For the purposes of this standard, the following definition applies: bearing full complement o
29、f balls (without cage), with filling slot 4 Symbols The definitions of tolerances and clearances are given in ISO1132. 1) For new design, use preferably bearings in corrosion resisting steel, see EN3286. 2) See ISO15. 3) Published as AECMA Standard at the date of publication of this standard. % dmp
30、= single plane mean bore diameter deviation % 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 S ia = assembled bearing inner ring face runout wit
31、h raceway S ea = assembled bearing outer ring face runout with racewayEN 3285:1994 4 BSI 01-2000 5 Required characteristics 5.1 Dimensions Tolerances Clearances Loads Mass Configuration:seeFigure 1: the bearings are fitted with either seals or shields. Values:seeTable 1; the dimensions and tolerance
32、s apply after protection. 5.2 Surface roughness Raceways and rolling elements: R a =0.24m. Bore, side faces and cylindrical outer surface: R a =0.84m. The values apply prior to cadmium plating. 5.3 Materials 5.4 Surface treatment EN2133 thickness,54m to124m, on the inner and outer rings, the bore an
33、d raceways are not cadmium plated. As soon as possible after plating, and within16h de-embrittlement heat treatment shall be carried out at a temperature and for a time (compatible with the performance requirements of the bearing) which shall be subject to written approval of the qualifying authorit
34、ies. K ia = radial runout of assembled bearing inner ring K ea = radial runout of assembled bearing outer ring F a max. = permissible static axial load C s = permissible static radial load. Inner ring : EN2031 or EN2221 or EN2222,59HRC to64HRC Outer ring : EN2031 or EN2221 or EN2222,59HRC to64HRC Ba
35、lls : EN2031,59HRC to64HRC Shields : Corrosion resisting material Seals : Polytetrafluoroethylene (PTFE) or polytetrafluoroethylene (PTFE) reinforced with fibreglass.EN 3285:1994 BSI 01-2000 5 Table 1 NOTE 1The installation of seals and shields is at the manufacturers option. NOTE 2The shields shall
36、 not extend beyondC. Figure 1 Dimensions in millimetres d B C D d1 min. Tolerances 4m r Mass kg/1000 parts . Code Nominal % dmp % Dmp % ds % Ds 05 5 7 5 16 7,6 0,3 to 0,8 4 06 6 8 6 19 8,6 9 08 8 9 7 22 10,6 12 10 10 10 8 26 12,6 21 12 12 28 14,7 24 15 15 11 9 32 17,7 32 17 17 12 10 35 20,2 42 20 20
37、 14 12 42 23,5 72 25 25 47 28,6 85 30 30 15 13 55 34,1 0,3 to1 123 0 0,12 0 0,12 0 8 0 8 + 2 10 + 2 10 0 9 + 2 11 + 3 11 0 11 + 3 14 0 10 + 3 13 0 13 + 4 17EN 3285:1994 6 BSI 01-2000Table 1 6 Designation EXAMPLE: NOTEIf necessary, the codeI9005 shall be placed between the description block and the i
38、dentity block. 7 Marking In addition to the manufacturers own marking, each bearing shall be marked, on one side face only, using the identity block, see6. Marking position and method are at the manufacturers option. 8 Technical specification See EN3280. d Code Internal clearances 4m Runout toleranc
39、es max. 4m Starting torque in mN.m a Permissible static loads b kN Axial max. Radial Axial Radial Code Code Axial Radial G a G r S ia S ea K ia K ea P E F a max. C s 05 100 2 to13 40 40 25 40 2 4 3,1 6,8 06 2,5 5 4,2 9,2 08 3 6,5 5,4 11,8 10 4 7,5 7,7 17 12 120 3 to18 5 8,5 8,9 19,5 15 6 10 10,6 23,
40、3 17 8 12 12,2 26,9 20 5 to20 10,5 15 18,7 41,2 25 13,5 18 21,2 46,6 30 150 19 25 28,5 62,6 a Definition, see EN3280. b Axial and radial loads may be applied simultaneously. For ultimate static loads, see EN3280.BSEN 3285:1994 BSI 01-2000 National annex NA (informative) Committees responsible The Un
41、itedKingdom participation in the preparation of this European Standard was entrusted by the Aerospace Standards Policy Committee (ACE/-) to Technical Committee MCE/7 upon which the following bodies were represented: Ball and Roller Bearing Manufacturers Association Ministry of Defence Society of Bri
42、tish Aerospace Companies Ltd. National annex NB (informative) Cross-references The BritishStandards corresponding to the International Standards referred to in the text are as follows. International Standard Corresponding BritishStandard ISO15:1981 BS6267:1982 Specification for rolling bearings: bou
43、ndary dimensions for radial bearings ISO1132:1980 BS6107 Rolling bearings: tolerances Part1:1981 Glossary of termsBS EN 3285:1994 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the U
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