1、CEN EN*3285 74 3404587 00bbLb 522 BRITISH STANDARD AEROSPACE SERIES Bearings, airframe rolling - Rigid single row ball bearings in steel, cadmium plated - Diameter series O and 2 - Normal clearance category - Dimensions and loads The European Standard EN 3285 : 1994 has the status of a British Stand
2、ard Srie arospatiale - Roulements pour structures daeronefs - Roulements en acier, cadmis, rigides, une range de billes - S6ries de diamtres O et 2 - Catgorie jeux normaux - Dimensions et charges Luft- und Raumfahrt - Flugwerklager - Einreihige Rillenkugellager aus Stahl, verkadmet - Durchmesserreih
3、en O und 2 - Normale Lagerluft - Mae und Belastungen UUC: 629.7.02 : 621.822.74.004.1 : 669.14.669.738 BS EN 3285 : 1994 CEN EN*3285 94 = 3404589 O066397 4b9 Amd. No. Date BS EN 3285 : 1994 Text affected This British Standard, having been prepared under the direction of the Aerospace Standards Polic
4、y Committee, was published under the authority of the Standards Board and comes into effect on 15 August 1994 O BSI 1994 The following BSI references relate to the work on this standard: Committee reference MCE17 Draft for comment 88172196 DC ISBN O 580 21887 2 Cooperating organizations The European
5、 Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Belgium Denmark Finland France Germany Greece Iceland Ireland Italy Luxembourg Netherlands Norway Portugal Spain Swede
6、n Switzerland United Kingdom Oesterreichisches Normungsinst,itut Institut belge de nornialisation Dansk Standard Suomen Standardisoimisliito, r. y. Association franaise de normalisation Deutsches Institut fr Normung eV. Hellenic Organization for Standardization Technological Institute of Iceland Nat
7、ional Standards Authority of Ireland Ente Nazionale Italiano di Unificazione Inspection du Travail et des Mines Nederlands Normalisatie-instituut Norges Standardiseringsforbund Instituto Portugus da Qualidade Asociacin Espaola de Normalizacin y Certificacin Standardiseringskommissionen i Sverige Ass
8、ociation suisse de normalisation British Standards Institution CEN ENx3285 94 3404587 0066398 3T5 BS EN 3285 : 1994 Contents Cooperating organizations National foreword Page Inside front page i Foreword Specification 1 Scope 2 3 2 Normative references 3 3 Definition 3 4 Symbols 3 5 Required characte
9、ristics 4 6 Designation 6 7 Marking 6 8 Technical specification 6 National annexes NA (informative) Committees responsible Inside back page NB (informative) Cross-references Inside back page National foreword This British Standard has been prepared under the direction of the Aerospace Standards Poli
10、cy Committee and is the English language version of EN 3285 : 1994 Aerospace series - Bearings, ai?fram rolling - Rigid single row ball bearings in steel, cadmium plated - Diameter series O and 2 - Normal clearance category - Dimensions and loads, published by the European Committee for Standardizat
11、ion (CEN). EN 3285 was produced as a result of international discussions in which the United Kingdom took an active part. Compliance with a British Standard does not of itself confer immunity from legal obligations. i CEN ENr3285 94 m 3404589 0066199 231 m EUROPEAN STANDARD EN 3285 NORME EUROPENNE E
12、UROPISCHE NORM May 1994 I!I)C (i29.7.l2 : i21.X.2.74.004.1 : 669.14 : 669.738 Ikscriptors: Aircraft industry. airframe bearings, ball bearings, steel, cadmium, dimensions, static loads English version Aerospace series - Bearings, airframe rolling - Rigid single row ball bearings in steel, cadmium pl
13、ated - Diameter series O and 2 - Normal clearance category - Dimensions and loads Srie arospatiale - Roulements pour structures daronefs - Roulements en acier, cadmis, rigides, une range de billes - Sries de diamtres O et 2 - Catgorie jeux normaux - Dimensions et charges Luft- und Raumfahrt - Flugwe
14、rklager - Einreihige Rillenkugellager aus Stahl, verkadmet - Durchmesserreihen O und 2 - Normale Lagerluft - MaBe und Belastungen This European Standard was approved by CEK on 1994-05-19. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giv
15、ing 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 CEN member. This European Standard exists in three official vers
16、ions (English, French, German). -4 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,
17、 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 Europisches Komitee fr Normung Central Secretariat: rue de Stassart
18、 36, B-1050 Brussels O 1994 Copyright reserved to CEN members Ref. No. EN 3285 : 1994 E CEN ENx3285 94 = 3404587 0066200 883 Page 2 EN 3285 : 1994 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out i
19、n 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, and the result was positive. T
20、his 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 November 1994 and conflicting national standards shall be withdrawn at the latest by November 1994. According to the CENKENELEC Internal Regulations,
21、 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, United Kingdom. . CEN ENx3285 94 3404589 0066203 7LT Page 3 EN 3285 : 1
22、994 1 Scope This standard specifies the characteristics of rigid single row ball bearings in steel 11, cadmium plated, of diameter series O and 2 2) designed to withstand only slow rotations and oscillations under load. They are intended for use between fixed and moving parts of the aircraft structu
23、re and their control mechanisms. The airframe rolling bearings defined in this standard are used from - 54 OC to + 150 OC However, being lubricated with the following greases : - very high pressure grease, ester type (code A), operational range - 73 OC to + 121 OC or - very high pressure grease, syn
24、thetic hydrocarbons, general purpose (code 8). operational range - 54 OC to + 177 OC (see EN 3280), their field of application when lubricated with code A grease is limited to + 121 OC. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other pub
25、lications. 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 amendment or revis
26、ion. For undated references the latest edition of the publication referred to applies. IS0 15 IS0 1 132 EN 2031 EN 21 33 EN 2221 EN 2222 EN 3280 EN 3286 Rolling bearings - Radial bearings - Boundary dimensions - General plan Rolling bearings - Tolerances - Definitions Steel FE-PL31 - Hardened and te
27、mpered - Bars - Aerospace series 3) Cadmium plating of steels with maximum specified tensile strength equal to or less than 1450 MPa and copper and copper alloys - Aerospace series 3) Steel FE-PL31 - Hardened and tempered - Hollow bars 3,5 mm S a 5 55 mm - Aerospace series 31 Steel FE-PL31 - Hardene
28、d and tempered - Hand and die forgings - Aerospace series 3) Aerospace series - Bearings, airframe roiiing, rigid or self-aligning - Technical specification Aerospace series - Bearings, airframe rolling - Rigid single row bail bearings in corrosion resisting steel - Diameter series O and 2 - Normal
29、clearance category - Dimensions and loads 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 given in IS0 1 132. Admp = single plane mean b
30、ore diameter deviation ADmp Ads = deviation single bore diameter ADS = deviation single outside diameter Ga = axial internal clearance Gr = radial internal clearance Sia = assembled bearing inner ring face runout with raceway Sea = assembled bearing outer ring face runout with raceway .%a = radial r
31、unout of assembled bearing inner ring Kea = radiai runout of assembled bearing outer ring Fa max. = permissible static axial load cs = permissible static radial load. = single plane mean outside diameter deviation 1) For new design. use preferably bearings in corrosion resisting steel, see EN 3286 2
32、) See IS0 15 3) Published as AECMA Standard at the date of publication of this standard CEN EN*3285 94 3404589 O066202 656 Page 4 EN 3285 : 1994 5 Required characteristics 5.1 Configuration : see figure 1 ; the bearings are fitted with either seals or shields. Values : see table 1 ; the dimensions a
33、nd tolerances apply after protection. Dimensions - Tolerances - Clearances - Loads - Mass 5.2 Surface roughness Raceways and rolling elements : Ra = 0,2 pm Bore, side faces and cylindrical outer surface : Ra = 0,8 pm The values apply prior to cadmium plating. 5.3 Materials Inner ring : Outer ring :
34、Balls Shields : Seals EN 2031 or EN 2221 or EN 2222, 59 HRC to 64 HRC EN 2031 or EN 2221 or EN 2222, 59 HRC to 64 HRC EN 2031, 59 HRC to 64 HRC Corrosion resisting material Polytetrafluoroethylene (PTFE) or polytetrafluoroethylene (PTFE) reinforced with fibreglass. 5.4 Surface treatment EN 2133 thic
35、kness, 5 pm to 12 pm, on the inner and outer rings, the bore and raceways are not cadmium plated. As soon as possible after plating, and within 16 h de-embrittlement heat treatment shall be carried out at a temperature and for a time (compatible with the performance requirements of the bearing) whic
36、h shall be subject to written approval of the qualifying authorities. c 11-1 I Type with seals Code E . Type with shields Code P NOTE 1 : The installation of seals and shields is at the manufacturers option. NOTE 2 : The shields shall not extend beyond u C R. Figure 1 CEN EN*3285 94 3404587 0066203
37、592 Page 5 EN 3285 : 1994 Table 1 Dimensions in millimetres 0,3 to 0.8 14 19 t- I 24 Internal clearances d Pm 40 Runout tolerances max. pm s, 40 Radial Axial Radial F, max. 25 2 4 3.1 6.8 2.5 5 42 9,2 3 6.5 5.4 11.8 4 7,5 7.7 17 5 8.5 8,9 19.5 6 10 10.6 23.3 40 8 12 12.2 26,9 10.5 15 18.7 41,2 I 13.
38、5 I 18 I 21.2 1 46.6 I 19 I 25 I 28.5 1 62.6 I li Definition, see EN 3280. 2) Axial and radial loads may be applied simultaneously. I For ultimate static loads, see EN 3280. Page 6 EN3285: 1994 6 Designation EXAMPLE : Description block BEARING Identity block EN3285AlOP Number of this standard Code f
39、or grease type (see 1 ) Diameter code d (see table li Code for type (see figure 11 NOTE : If necessary, the code 19005 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 one side face only, us
40、ing the identity block, see 6. Marking position and method are at the manufacturers option. 8 Technical specification See EN 3280. e CEN ENx325 94 3409589 0066205 365 = BS EN 3285 : 1994 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of thi
41、s European Standard was entrusted by the Aerospace Standards Policy Committee (ACE/-) to Technical Committee MCEI7 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 (in
42、formative) Cross-references The British Standards corresponding to the international standards referred to in the text are as follows. International standard Corresponding British Standard IS0 15 : 1981 IS0 1132 : 1980 BS 6267 : 1982 Specification for rolling bearings : boundary dimensions for radia
43、l bearings BS 6107 Rolling bearings : tolerances Part 1 : 1981 Glossary of terms BS EN 3285 : 1994 BSI 2 Park Street London W1A 2BS BSI Linford Wood Milton Keynes MK14 6LE 9408 - 4 - 0.4k -IT BSI - British Standards Institution BSI is the independent national body responsible for preparing British S
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