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1、BRITISH STANDARD AEROSPACE SERIES BS EN 2018:1989 Specification for Bearings-airframe rolling single row, self aligning roller bearings in steel diameter series 3 and 4 Dimensions and loads This European Standard EN 2018 has the status of a British Standard. UDC 629.7.02:621.822.8.004.1:621.828:669.
2、14 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:42:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2018:1989 This British Standard, having been prepared under the direction of the Aerospace Standards Policy Committee, was published under the authority of the Board of BSI and comes i
3、nto effect on 29 September 1989 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference MCE/7 Draft for comment 76/74662 DC ISBN 0 580 17652 5 Cooperating organizations The European Committee for Standardization, under whose supervision this European Standar
4、d was prepared, comprises the national standards organizations of the following Western European countries. AustriaOesterreichisches Normungsinstitut BelgiumInstitut belge de normalisation DenmarkDansk Standardiseringsraad FinlandSuomen Standardisoimisliito, r.y. FranceAssociation franaise de normal
5、isation GermanyDeutsches Institut fr Normung e.V. GreeceHellenic Organization for Standardization IrelandNational Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto Portugus d
6、e Qualidade SpainInstituto Espaol de Normalizacin SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Fri
7、Nov 03 01:42:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2018:1989 BSI 12-1999i Contents Page Cooperating organizationsInside front cover National forewordii Brief history2 Text of EN 20183 National appendix AInside back cover National appendix BInside back cover Licensed Copy: sheffieldun s
8、heffieldun, na, Fri Nov 03 01:42:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2018:1989 ii BSI 12-1999 National foreword This British Standard has been prepared under the direction of the Aerospace Standards Policy Committee and is the English language version of EN 2018 “Bearings-airframe ro
9、lling single row, self aligning roller bearings in steel diameter series 3 and 4. Dimensions and loads. Aerospace series”, published by the European Committee for Standardization (CEN). EN 2018 was produced as a result of international discussion in which the UK took an active part. A British Standa
10、rd 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 comprises a front cover, a
11、n inside front cover, pages i and ii, the EN title page, pages 2 to 6, 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. Licensed Copy: sheffiel
12、dun sheffieldun, na, Fri Nov 03 01:42:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2018 June 1984 UDC 629.7.02:621.822.8.004.1:621.828:669.14 Key words: Aircraft industry, airframe bearings, self aligning bearings, roller bearings, steel, dimensi
13、ons, static loads English version Bearings-airframe rolling single row, self aligning roller bearings in steel diameter series 3 and 4 Dimensions and loads Aerospace series Roulements pour structures daronefs roulements en acier, rotule sur une range de rouleaux sries de diamtres 3 et 4 Dimensions e
14、t charges Srie arospatiale Luft- und Raumfahrt Flugwerklager einreihige Tonnenlager aus Stahl Durchmesserreihen 3 und 4 Masze und Belastungen This European Standard was accepted by CEN on 1984-06-21. CEN members are bound to comply with the requirements of CEN Internal Regulations which stipulate th
15、e 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 CEN Central Secretariat or to any CEN member. This European Standard exist
16、s 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 CEN Central Secretariat has the same status as the official versions. CEN members are the national standards orga
17、nizations of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Ireland, Italy, 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
18、 Stassart 36, B-1050 Brussels CEN 1984 Copyright reserved to all CEN members Ref. No. EN 2018:1984 E Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:42:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2018:1984 BSI 12-1999 2 Brief history This European Standard has been prepared by the Eur
19、opean Association of Aerospace Constructors (AECMA). This Standard has been accepted by the European Committee for Standardization (CEN) after inquiries and votes carried out in accordance with the rules of this Committee. Contents Page Brief history2 1Scope3 2Fields of application3 3References3 4De
20、finitions3 5Symbols3 6Materials3 7Required characteristics3 8Designation5 9Marking5 10Technical specification5 Figure4 Table4 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:42:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2018:1984 BSI 12-19993 1 Scope This standard specifies the chara
21、cteristics, of rigid single row ball bearings of diameter series 3 and 41) 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. 2 Fields of application The airframe roll
22、er bearings defined in the present standard shall be used from 54 to + 150 C. However, being lubricated with the following greases: very high pressure grease, ester type (code A), operational range 73 to + 121 C or very high pressure grease, synthetic hydrocarbons, general purpose (code B), operatio
23、nal range 54 to + 177 C (refer to EN 2063), their field of application when lubricated with code A grease shall be limited to + 121 C. 3 References ISO 15:1981, Rolling bearings Radial bearings Boundary dimensions General plan. EN 2031, Steel FE-PL31, Hardened and tempered, Bars. EN 2063, Bearings,
24、airframe rolling Technical Specification. 4 Definitions Self aligning roller bearings, full complement (without cage), single row. 5 Symbols 6 Materials Inner ring: Steel EN 20312)59 to 64 HRC Outer ring: Steel EN 20312)59 to 64 HRC Rollers: Steel EN 20312)59 to 64 HRC Shields: Corrosion resisting m
25、aterial Seals: Polytetrafluoroethylene (PTFE); or polytetrafluoroethylene (PTFE) glass fibre reinforced plastic material. 7 Required characteristics 7.1 Dimensions Tolerances Clearances Loads Mass Configuration shall correspond with the Figure. Dimensions shall correspond with the Table. Bearings ca
26、n be assembled with either seals or shields. 1) See ISO 15. %ds= the deviation of a single bore diameter %Ds= the deviation of a single outside diameter %dmp= single plane mean bore diameter deviation %Dmp= single plane mean outside diameter deviation Cs= permissible static radial load Fa= bearing a
27、xial load = axial component of actual bearing load Fa max= permissible static axial load Fr= static radial load Por= static equivalent radial load Ys= coefficient of axial load. 2) For new designs, bearings in corrosion resisting steel should be used for preference, see EN 2020. Licensed Copy: sheff
28、ieldun sheffieldun, na, Fri Nov 03 01:42:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2018:1984 4 BSI 12-1999 7.2 Surface roughness Ra = 0,2 4m for the raceway and rolling elements. Ra = 0,8 4m for the bore side faces and cylindrical outer surface. Table Figure Dimensions in millimetres d D C 0
29、0,12 B 0 0,12 d1 nom. Tolerances m r Radial internal clearance Permissible static radial load Cs Mass kg/1 000 parts Codenominal%dmp%Dmp%ds%DsmkN. 08830141714 0 8 0 9 + 2 10 + 2 11 0,3 to 0,8 10 to 20 36,758 101035 1721 15,7 0 11 + 3 14 53,991 12123718 + 3 11 60,2106 15154221,869,6132 171747192325,1
30、94,5186 202052212628 0 10 0 13 + 3 13 +4 17 0,3 to 1 15 to 25 113,2246 252562242934,5161,7397 303072273441,3215,6610 Fa max. =where Ys = 3,3 Equivalent static radial load Por. Load Por resulting from radial and axial loads is calculated according to formula Por = Fr + 3,3 Fa and shall be less than o
31、r equal to load Cs given in the Table, see EN 2063. For ultimate static loads, see EN 2063. Cs Ys - Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:42:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2018:1984 BSI 12-19995 8 Designation Each bearing shall only be designated as in the follo
32、wing example: where the following codes are applied: NOTEIf necessary, the originator code S 9005 may be introduced between the description block and the identity block. 9 Marking In addition to the manufacturers own marking, each bearing shall be marked, on one side face only using the identity blo
33、ck as defined in clause 8 of this standard. Marking position and method are at the manufacturers option. 10 Technical specification Bearings supplied to this standard shall conform with the requirements of EN 2063. GreasesTypes A = ester type greaseE = with seals B = synthetic hydrocarbon type greas
34、eP = with shields Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:42:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 6 blank Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:42:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2018:1989 BSI 12-1999 National appendix A The United K
35、ingdom 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: Advanced Manufacturing Technology Research Institute Ball and Roller Bearing Manufacturer
36、s Association Engineering Equipment and Materials Users Association Institution of Production Engineers Ministry of Defence North East Coast Institution of Engineers and Shipbuilders Society of British Aerospace Companies Limited National appendix B The British Standards corresponding to the Europea
37、n and International Standards referred to in the text are identical in number and title with those given in clause 3 with the exception of ISO 15 for which the corresponding British Standard is BS 6267:1982 (content identical). Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:42:16 GMT+00:0
38、0 2006, Uncontrolled Copy, (c) BSI BS EN 2018:1989 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorpo
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46、oes not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel: 020 8996 7070. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:42:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI