1、Aerospace series - Bushes, plain, aluminium alloy, with self-lubricating liner - Dimensions and loads BS EN 2285:2017 BSI Standards Publication WB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2285 May 2017 ICS 49.030.99 Supersedes EN 2285
2、:1989 English Version Aerospace series - Bushes, plain, aluminium alloy, with self-lubricating liner - Dimensions and loads Srie arospatiale - Bagues cylindriques en alliage daluminium garniture autolubrifiante - Dimensions et charges Luft- und Raumfahrt - Buchsen aus Aluminium- Legierung mit selbst
3、schmierender Beschichtung - Mae und Belastungen This European Standard was approved by CEN on 2 January 2017. 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 alter
4、ation. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made
5、 by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estoni
6、a, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FO
7、R STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2285:2017 E National foreword Thi
8、s British Standard is the UK implementation of EN 2285:2017. It supersedes BS EN 2285:1990, which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems. A list of organizations represented on this committee can be
9、 obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017 ISBN 978 0 580 95838 0 ICS 49.030.99 Compl
10、iance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2017. Amendments/corrigenda issued since publicationDate Text affected BRITISH STANDARD BS EN 2285:2017 EUROP
11、EAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2285 May 2017 ICS 49.030.99 Supersedes EN 2285:1989 English Version Aerospace series - Bushes, plain, aluminium alloy, with self-lubricating liner - Dimensions and loads Srie arospatiale - Bagues cylindriques en alliage daluminium garniture autolubrifi
12、ante - Dimensions et charges Luft- und Raumfahrt - Buchsen aus Aluminium- Legierung mit selbstschmierender Beschichtung - Mae und Belastungen This European Standard was approved by CEN on 2 January 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the co
13、nditions 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-CENELEC Management Centre or to any CEN member. This European Standard exi
14、sts 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national st
15、andards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Sl
16、ovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any me
17、ans reserved worldwide for CEN national Members. Ref. No. EN 2285:2017 E BS EN 2285:2017EN 2285:2017 (E) 2 Contents Page European foreword . 3 1 Scope . 4 2 Normative references . 4 3 Required characteristics . 4 3.1 Configuration Dimensions Masses 4 3.2 Surface roughness 4 3.3 Materials 4 3.4 Surfa
18、ce treatment . 5 4 Designation . 8 5 Marking 8 6 Technical specification . 8 7 Design recommendation 9 (informative) Standard evolution form . 10 BS EN 2285:2017EN 2285:2017 (E) 3 European foreword This document (EN 2285:2017) has been prepared by the Aerospace and Defence Industries Association of
19、Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this European Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This
20、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 2017, and conflicting national standards shall be withdrawn at the latest by November 2017. Attention is drawn to the possibility that some of t
21、he elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 2285:1989. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries
22、 are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
23、 Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 2285:2017EN 2285:2017 (E) 4 1 Scope This document specifies the characteristics of plain bushes in aluminium alloy with self-lubricating liner and the design recommendation of shafts and
24、housings. The bushes are intended for operation within the temperature range of 55 C to 121 C and assembly with an interference fit into fixed and moving aerospace parts. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispen
25、sable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2086, Aerospace series Aluminium alloy AL-P2618A T851 Hand and die forgings a 150 mm EN 2101, Aerospace series
26、 Chromic acid anodizing of aluminium and wrought aluminium alloys EN 2284, Aerospace series Sulphuric acid anodizing of aluminium and wrought aluminium alloys EN 2311, Aerospace series Bushes with self-lubricating liner Technical specification EN 2701, Aerospace series Aluminium alloy (2024) Solutio
27、n treated, water quench, cold worked and naturally aged (T3) Drawn tube for structures 0,6 a 12,5 mm 1)EN 2704, Aerospace series Aluminium alloy AL-P2024 AlCu4Mg1 T3511 Drawn bars D e 75 mm 2) 3 Required characteristics 3.1 Configuration Dimensions Masses Configuration: according to Figure 1. Dimens
28、ions, masses: according to Figure 1 and Table 1. Dimensions apply after surface treatment. 3.2 Surface roughness According to Figure 1. 3.3 Materials Bush: Aluminium alloy according to EN 2086, EN 2701 or EN 2704. Liner: Self-lubricating wear resistant material consistent with the requirements of EN
29、 2311. 1)Published as ASD-STAN Standard at the date of publication of this European Standard. http:/www.asd-stan.org/ 2)Published as ASD-STAN Prestandard at the date of publication of this European Standard. http:/www.asd- stan.org/ BS EN 2285:2017EN 2285:2017 (E) 5 3.4 Surface treatment Table 1 Sur
30、face treatment Treatment Remarks Code Chromic acid anodizing according to EN 2101 Type A or Pre-treatment for painting no code Sulphuric acid anodizing according to EN 2284 Type A. Chromic acid anodizing according to EN 2101 Type B or Corrosion Protection R Sulphuric acid anodizing according to EN 2
31、284 Type B. Dimensions in millimetres Key a 0,50 to 0,75 b chamfer machined before bonding c chamfer or radius at manufacturers option d chamfer machined after bonding Figure 1 Configuration and dimensions BS EN 2285:2017EN 2285:2017 (E) 6 Table 2 Dimensions and tolerances Dimensions in millimetres
32、d D L 0,1 0,4 Nominal- size Tolerances m Nominal- size Tolerances m 6 8 10 12 15 16 18 20 22 25 28 30 32 35 40 45 50 Mass in kg/1 000 pieces 6 +22 +410 +24 +150,9* 8 +27 +512 +29 +181,1 1,4* 10 14 1,3 1,7 2,1* 12 +33 +616 1,5 2,0* 2,5 3,0* 15 19 +35 +22 2,4 3,0* 3,6 4,6* 16 20 2,6 3,2 3,8 4,8 5,1 18
33、 22 3,6 4,3 5,5 6,6 20 +40 +725 5,0 6,0* 7,5 10,0* 22 26 5,1 6,4* 8,5 9,4* 25 30 7,4 9,2* 12,5 13,5 15,3* 28 34 +42 +26 12,4 16,6 18,2 20,7 23,2 30 36 13,3 17,7* 19,5 22,1 26,5* 32 +48 +938 14,0 18,7 20,5 23,5 28,0 29,9 35 42 24,0* 26,5 30,1 36,0 42,2* 40 48 31,0 39,0 46,9* 54,9 62,8* 45 52 +51 +32
34、38,0 45,6 53,1* 60,7 68,2* 50 58 48,7 58,2 67,7 77,3* 86,8 96,4* Only bushes whose masses lie within the bold lines are standard. The recommended sizes are indicated by *. BS EN 2285:2017EN 2285:2017 (E) 7 Table 3 Loads d L Permissible radial load d L Permissible radial load d L Permissible radial l
35、oad Static Dynamic Static Dynamic Static Dynamic C s aC 25 bC s aC 25 bC s aC 25 bmm mm kN kN mm mm kN kN mm mm kN kN 6 6 4,9 4,1 20 15 53,6 44,7 32 30 184,6 153,8 8 6 6,6 5,5 20 74,2 61,8 32 197,8 164,8 8 9,9 8,3 22 12 45,3 37,7 35 20 129,8 108,2 10 6 8,2 6,8 15 58,9 49,1 22 144,2 120,2 8 12,4 10,3
36、 20 81,6 68,0 25 165,8 138,2 10 16,5 13,8 22 90,6 75,5 30 201,9 168,3 12 6 9,9 8,3 25 12 51,5 42,9 35 237,9 198,3 8 14,8 12,3 15 67,0 55,8 40 20 148,3 123,6 10 19,8 16,5 20 92,7 77,3 25 189,5 157,9 12 24,7 20,6 22 103,0 85,8 30 230,7 192,3 15 8 18,5 15,4 25 118,5 98,8 35 271,9 226,6 10 24,7 20,6 28
37、15 75,0 62,5 40 313,1 260,9 12 30,9 25,8 20 103,8 86,5 45 25 213,2 177,7 15 40,2 33,5 22 115,4 96,2 30 259,6 216,3 16 8 19,8 16,5 25 132,7 110,6 35 305,9 254,9 10 26,4 22,0 28 150,0 125,0 40 352,3 293,6 12 33,0 27,5 30 15 80,3 66,9 45 398,5 332,1 15 42,5 35,7 20 111,2 92,7 50 25 236,9 197,4 16 45,1
38、38,4 22 123,6 103,0 30 288,4 240,3 18 10 29,7 24,8 25 142,1 118,4 35 339,9 283,3 12 37,1 30,9 30 173,0 144,2 40 391,4 326,2 15 48,2 40,2 32 15 85,7 71,4 45 442,9 369,1 18 59,3 49,4 20 118,7 98,9 50 494,4 412,0 20 10 33,0 27,5 22 131,8 109,8 12 41,2 34,3 25 151,6 126,3 aC s= 0,206 d (L 2) kN Based on
39、 a unit pressure of 206 MPa. bC 25= 1, 2 kN Definitions of all loads are given in EN 2311. BS EN 2285:2017EN 2285:2017 (E) 8 4 Designation EXAMPLE NOTE 1 The number of characters is constant, Zero (0) is inserted to the left of the figure when the diameter d or length L is less than 10. NOTE 2 If ne
40、cessary, the code I9005 shall be placed between the description block and the identity block. NOTE 3 Parts manufactured before the issue of this European Standard shall be accepted without technology code. Table 4 Technology code Technology code Technology A Bonded fabric liner B Injection moulded l
41、iner Without code Both technologies can be used at users convenience 5 Marking In addition to the manufacturers own marking, each bush and its package shall be marked with the identity block specified in Clause 4 of this European standard. The technology used by the manufacturer shall be stated with
42、in the identity block. Marking position and method are at manufacturers option and shall not have any detrimental effect on the bush. Bushes which are too small to be marked with the full information required shall have this on the package only. 6 Technical specification According to EN 2311. BS EN
43、2285:2017EN 2285:2017 (E) 9 7 Design recommendation Bushes defined by this European Standard are intended to be installed by interference fit methods (see Figure 2). Therefore, the loads given in Table 3 can only be ensured if the following mounting is applied. Key 1 shaft 2 bush 3 housing a housing
44、 diameter D H7 b shaft diameter d f6 Figure 2 Surface roughness of the shaft Hardness of the shaft: 50 HRC min. Surface roughness of the shaft: according to Figure 2. The reduction in bore diameter d (see Figure 1), due to interference fit of the bush in the housing, has been taken into account when
45、 selecting tolerances for the shaft: f6 (clearance fit). When applied in actual usage, the coefficient of friction under load could be different from that defined in EN 2311, since it depends on the following shaft definitions: Material, hardness, surface finish, surface treatment and installation c
46、onditions. BS EN 2285:2017EN 2285:2017 (E) 10 (informative) Standard evolution form The main changes with respect to the previous edition are listed in Table A.1. Table A.1 Main changes to previous edition prEN/EN Number Edition Publication Date Modification Reason and validation 2285 P1 03/2002 Ger
47、man title changed: wording ohne Flansch deleted Wrong translation Surface treatment, Table 1 for treatment with remarks and code was added New surface treatment added Designation; code R and surface treatment was added New surface treatment added Scope temperature changed from 55 C to 163 C to 55 C
48、to 121 C Changed due to aluminium Editorially revised BS EN 2285:2017This page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services. BSI is incorporated by Royal Charter. British Standards and other standardization products are
