BS EN 3057-1994 Bearings airframe rolling - Rigid double row ball bearings in steel cadmium plated - Dimensions and loads《机体轴承 镀铬的钢制的刚性双列球轴承 尺寸和负载》.pdf

1、BRITISH STANDARD AEROSPACE SERIES BS EN 3057:1994 Bearings, airframe rolling Rigid double row ball bearings in steel, cadmium plated Dimensions and loads The European Standard EN3057:1994 has the status of a BritishStandard UDC 629.7.02:621.822.74.004.1:669.14.669.738BSEN3057:1994 This BritishStanda

2、rd, having been prepared under the directionof the Aerospace Standards Policy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 15July1994 BSI01-2000 The following BSI references relate to the work on this standard: Committee reference MCE/7 Draft for comment8

3、8/72195 DC ISBN 0 580 22203 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 Belgium Institu

4、t belge de normalisation Denmark Dansk Standardiseringsraad 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 S

5、tandards 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 Certificaci

6、n Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom BritishStandards Institution Amendments issued since publication Amd. No. Date CommentsBSEN3057:1994 BSI 01-2000 i Contents Page Cooperating organizations Inside front cover National forewo

7、rd ii Foreword 2 1 Scope 3 2 Normative references 3 3 Definition 3 4 Symbols 3 5 Required characteristics 4 6 Designation 5 7 Marking 5 8 Technical specification 5 National annex NA (informative) Committees responsible Inside back cover National annex NB (informative) Cross-reference Inside back cov

8、er Figure 1 4 Table 1 5BSEN3057:1994 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 EN3057:1994 Aerospace series Bearings, airframe rolling Rigid double row ball bearings i

9、n steel, cadmium plated Dimensions and loads, published by the European Committee for Standardization (CEN). EN3057 was produced as a result of international discussions in which the United Kingdom took an active part. A British Standard does not purport to include all the necessary provisions of a

10、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 title page, pages2 to6,

11、 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 EN3057 April 1994 UDC 629.7.02:621.822.74.00

12、4.1:669.14.669.738 Descriptors: Aircraft industry, airframe bearings, ball bearings, steel, cadmium, dimensions, static loads English version Aerospace series Bearings, airframe rolling Rigid double row ball bearings in steel, cadmium plated Dimensions and loads Srie arospatiale Roulements pour stru

13、ctures daronefs Roulements en acier, cadmis, rigides, deux ranges de billes Dimensions et charges Luft- und Raumfahrt Flugwerklager Zweireihige Rillenkugellager aus Stahl, verkadmet Mae und Belastungen This European Standard was approved by CEN on 1994-04-27. CEN members are bound to comply with the

14、 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 national standards may be obtained on application to the Central Secretariat or

15、 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 notified to the Central Secretariat has the same status as the official versi

16、ons. 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. CEN European Committee for Standardization Comit Europen de Normalisati

17、on Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref.No.EN3057:1994EEN3057:1994 BSI 01-2000 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inqui

18、ries 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 to CEN. This standard was submitted for Formal Vote, an

19、d the result was positive. This European Standard shall be given the status ofa national standard, either by publication of an identical text or by endorsement, at the latest by October 1994, and conflicting national standards shall be withdrawn at the latest by October 1994. According to the CEN/CE

20、NELEC 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, Portugal, Spain, Sweden, Switzerland, UnitedKingdom.EN3057:1994 BSI 01-2000 3 1 Sc

21、ope This standard specifies the characteristics of rigid double row ball bearings in steel 1) , cadmium plated, designed to withstand only slow rotations and oscillations under load. They are intended for use in the hubs of bell crank levers fitted with a single bearing. The airframe rolling bearing

22、s defined in this standard are used from 54 C to+150 C. However, being lubricated with the following greases: very high pressure grease, ester type (code A), operational range 73 C to+121 C or very high pressure grease, synthetic hydrocarbons, general purpose (code B), operational range 54 C to+177

23、C (seeEN3280), their 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 an

24、d 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 amendment or revision. For undated references the latest edition of the publication referred to applies. I

25、SO1132, Rolling bearings Tolerances Definitions. EN2031, Steel FE-PL31 Hardened and tempered Bars Aerospace series 2) . EN2133, Cadmium plating of steels with maximum specified tensile strength equal to or less than1450MPa and copper and copper alloys Aerospace series 2) . EN2221, Steel FE-PL31 Hard

26、ened and tempered Hollow bars3,5mmk ak 55mm Aerospace series 2) . EN2222, Steel FE-PL31 Hardened and tempered Hand and die forgings Aerospace series 2) . EN3058, Aerospace series Bearings, airframe rolling Rigid double row ball bearings in corrosion resisting steel Dimensions and loads. EN3280, Aero

27、space series Bearings, airframe rolling, rigid or self-aligning Technical specification. 3 Definition For the purposes of this standard, the following definition applies: bearing full complement of balls (without cage), with filling slot 4 Symbols The definitions of tolerances and clearances are giv

28、en in ISO1132. 1) For new design, use preferably bearings in corrosion resisting steel, seeEN3058. 2) Published as AECMA Standard at the date of publication of this standard. % dmp = single plane mean bore diameter deviation % Dmp = single plane mean outside diameter deviation % Ds = deviation of a

29、single outside diameter G d = diagonal internal clerance S ia = assembled bearing inner ring face runout with raceway S ea = assembled bearing outer ring face runout with raceway K ia = radial runout of assembled bearing inner ring K ea = radial runout of assembled bearing outer ring F amax. = permi

30、ssible static axial load C s = permissible static radial load.EN3057:1994 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 tolerances apply

31、 after protection. 5.2 Surface roughness Raceways and rolling elements: R a =0,24m Bore, side faces and cylindrical outer surface: R a =0,8 4m 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 and racewa

32、ys 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 authorities. Inn

33、er ring : EN2031 or EN2221 or EN2222,59HRC to64HRC Outer ring: EN2031 or EN2221 or EN2222,59HRC to64HRC Balls : EN2031,59HRC to64HRC Shields : Corrosion resisting material Seals : Polytetrafluoroethylene (PTFE) or polytetrafluoroethylene (PTFE) reinforced with fibreglass. NOTE 1The installation of s

34、eals and shields is at the manufacturers option. NOTE 2The shields shall not extend beyond C . Figure 1 EN3057:1994 BSI 01-2000 5 Table 1 Table 1 6 Designation EXAMPLE: NOTEIf necessary, the codeI9005 shall be placed between the description block and the identity block. 7 Marking In addition to the

35、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 SeeEN3280. Dimensions in millimetres d B C D d1 Tolerances 4m r Mass kg/1000 parts . Code Nominal min

36、. % dmp % Dmp % Ds 08 8 22 17 22 10,6 J7 0,3 to 0,8 30 10 10 24 18 26 12,6 52 12 12 28 14,7 60 15 15 26 20 32 17,7 80 17 17 28 22 35 20,2 100 20 20 32 26 42 23,5 165 d Code Diagonal internal clearance G d 4m Runout tolerances max. 4m Starting torque ain mN.m Permissible static loads bkN Axial Radial

37、 Code Code Axial Radial S ia S ea K ia K ea P E F amax. C s 08 50 to250 40 40 25 40 4 6 10,9 24 10 6 9 15,6 34,4 12 7 11 18,4 40,4 15 9 14 21,4 47 17 11 17 24,5 53,8 20 15 23 37,7 83 a Definition, seeEN3280. b Axial and radial loads may be applied simultaneously. For ultimate static loads, seeEN3280

38、. 0 012 , 0 012 , 0 8 + 2 11 0 9 + 3 146 blankBSEN3057:1994 BSI 01-2000 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by the Aerospace Standards Policy Committee (ACE/-) to Technical Committee MCE/7

39、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) Cross-reference The BritishStandard corresponding to the International Standard referred to in the text

40、is as follows. International Standard Corresponding BritishStandard ISO1132:1980 BS6107 Rolling bearings: tolerances Part1:1981 Glossary of termsBS EN 3057:1994 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing Brit

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