1、EUROPEAN STANDARD NORME EUROPEENNE EUROPISCHE NORM EN 2288 December 1989 UDC : 629.7.02+05:621.887-408.2-72,004.1:669.14.018.89. Key words : Aeronautical industry, bush, corrosion resisting steel, liner, self-lubricating piece, dimension. English version Aerospace series Bushes, flanged corrosion re
2、sisting steel with self-lubricating liner Dimensions and loads Srie arospatiale Bagues paulement en acier rsistant la corrosion garniture autolubrifiante Dimensions et charges Luft- und Raumfahrt Buchsen mit Flansch aus korrosionsbestndigem Stahl mit selbstschmierender Beschichtung Mae und Belastung
3、en This European Standard was accepted by CEN on 1 988-1 1-03. CEN members are bound tocomply with the requirements of CEN Internal Regulations which stipulate the conditionsfor giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographic
4、al references concerning such national standards may be obtained on application to the CEN Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). Aversion in any other language made bytranslation under the responsibility of a CEN
5、 member into its own language and notified to CEN Central Secretarat has the same status as the official versions. CEN members are the national standards organizations of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal, S
6、pain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat : Rue Brderode 2, B-1 O00 Bruxelles CEN 1989 Copyright reserved to all CEN members .LL-F Ref. Nr EN 2288: 1989 E . F t F- - CEN E
7、N*Z288 89 3404589 0036358 9 M: C EN 2288 Page 2 Brief history This European Standard has been prepared by the European Association of Aerospace Manufacturers (AE C MA). After inquiries and votes carried out in accordance with the rules of this Association, this Standard has successively received the
8、 approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. According to the Common CEN/CENELEC Rules, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany,
9、Greece, Iceland, Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EY 2768 Tage 3 1 Scope Thls standard specifies the Characteristics of flawed bushes in corrosion res5stiri.g steel with self-luhricatlng liner 2nd the dec5-p recommendation of ch
10、af ts and housings. . 3 Field of application The bushes are intended for operation within t3e temperature range of -55 OC to +150 OC and assembly with an interference fit into fixed and moving aerospace parts. 3 References EN 2136, Steel FF-PM42 - 900 HZa 960 ma - Bars ?le 120 mm 2) - - Ir Required
11、characteristics 4.1 Configuration - Dimensions - Tolerances - !asses Configuratjon : see figure 1. Dimensions, tolerances and masses : see figure 1. and table 1. 4.3. Surface roughness See figure 1. O 4.3 Materials Bush : Steel. EN 3136 or EN 3539 Liner : Self-!ubricating we2r ressrart material ccns
12、istent with the re.u!re- ments of EP 2311. I) Published as AECMA stan8ard. 2) Published as AECMA pre-standard. *- CEN EN*ZZ88 87 3404587 001bLbO 7 .- EN 2288 Page4 I. X (2,5:1) + 0,25 !,5 0 1505 L r or radius acturers I - 0,8 max. - Y (2,5:1) I Break sharp corner R max. 0,2 Figure 1 Table 1 Dimensio
13、ns in millimetres - 0.1 - 0.4 *I0 - _- - -a 6 8 IO 12 15 16 18 20 22 25 28 30 32 35 40 45 50 E O -0.1 ! 1.5 A O -0.25 Mass in kg/1000 pieces - - 24 - 15 - 29 - 18 12 - 14 16 22 - 25 26 ._ - 35 - 22 28 30 32 - 35 JO 42 - - 52 - 26 2.5 - - “ 59 -9 45 - 51 - 32 - Onrv dusnes mose masses Ne mlhm lhe bol
14、d are sfandard %e womntended sms aio atdtcafed by e lm d mm EN 2288 Page 5 static load Ca 31 kN Table 2 I 6 I 10.0 1 4.0 I I 20 i 186.6 i 74.6 I 6 I 6 I 7.5 1 3.0 I 12.9 I I 15 I 126.4 I 50.6 I 28 I 22 I 210.7 I 84.3 I 187.7 1 15.6 I I 8 I 16.9 I 6.8 I 8 10 I l I 6 1 12.5 f 5.0 8 1 21.1 1 8.4 18.4 2
15、8 I 282.9 1 113,2 I 10 I 29.7 I 11.9 I 25 i 246,8 i 98.7 I 15 I 135.5 I 54.2 I I 8 29.0 11.6 10 I 41,9 I 16.8 12 1-1 71,4 L 15 144.5 57.8 20 213.3 I 85.3 198,6 30 25 264.5 105.8 L I 16 86.0 34.4 10 I 58,3 I 20.1 I12 I 43.9 I 17.6 I I 1 30 1 329.0 131.6 1 225.8 35 383.8 153.5 40 83.6 21.9 l5 12 i 54.
16、8 35 1 459.0 I 183.6 I 20 266.6 1 106.6 25 352,6 I 141.0 30 438,6 I 175.4 253 35 I 524.6 I 209.8 209.4 282.1 1 12.8 32 18 16 58,5 23.4 87.7 233,3 93.3 11 2.2 I 44,9 I I 15 I 79.1 1 31.6 I I I 22 1 263.4 I 105.4 I 2o . 40 i 610.6 i 244.2 15 i 98.9 39.6 20 I 141.9 56.8 25 396,7 158.7 12 I 80,4 32,2 I
17、30 I 493.4 1 197.4 1 O4 1 12 I 65.8 I 26.3 I 25 I 95.9 l8 15 i 89.0 I 35,6 22 i 175.0 i 70,O 12 69,s 28.0 15 123.6 49.4 20 177,4 71.0 124,4 22 198.9 79.6 25 231.1 92.4 50 50 I l 12 I 73.1 I 29.2 978,3 391.3 I I I I , I 280.2 22 I :i I 108,8 433 1 112,2 156.1 I 62.4 I 45 I 870.8 I 391.3 I 1) Cs = 0.4
18、3d (L - 1.2 - R max. - E maxi kN. Values of R max. and E max. derived from.the values of R and E given in table 1. 2) Definitions for C25 and ultimate static loads, see EN 231 1. 31 Ca = 0,34 IA - 1,512 - id -t- 2.5)* J kN. s. CEN EN*Z288 89 3401)589 OOLbLb2 O II _ EN 2288 Page 6 5 Designation Each
19、bush shall only be designated as in the following example : Description block Identity block EN2288-1208 BLSH I Number of EN standard 12 = diameter d in rum (see table 1) 1 08 = length L in mm (see table 1) Notes : 1 The number of characters is constant, zero (O) is inserted at the left of the figur
20、e when the diameter d or length L is less than 10. 2 If necessary the originators code I9CC5 may be introduced between the description block and the identity block. 6 Marking In addition to the manufacturers own marking each bush and its package shall be marked with the identity block specified in c
21、lause 5 of this standard. Marking position and method are at manufacturers option, and shall not have any detrimental effect on the bush. 7 Technical specification Bushes supplied to this standard shall conform with the requirements of techni- cal specification EN 2311. The loads given in table 2 of
22、 this standard are only applicable under the conditions given in EN 2311. 8 Design recommendation Bushes defined by this standard are intended to be installed by interference fit methods (see figure 2). Therefore, the loads given in table 2 can only be insured if the following mounting is applied. H
23、ousing - OL/ V Shaft Bush b I Figure 2 Eardness of the shaft : 45 HRC Surface roughness of the shaft : See 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 selecting tolerances for the shaft : f6 (clearance fit) or j6 (transition ft), F
