BS EN 2288-2019 Aerospace series - Bush, flanged, corrosion resisting steel, with self-lubricating liner - Dimensions and loadsVIP

BSEN 2288:2019 BSI Standards Publication Aerospace series Bush, flanged, corrosion resisting steel, with self-lubricating liner - Dimensions and loads bsu BS EN 2288:2019 EUROPEAN STANDARD EN 2288 NORME EUROPEENNE EUROPAlSCHE NORM February 2019 ICS 49.030.99 Supersedes EN 2288:1989 English Version Aerospace series - Bush, flanged, corrosion resisting steel, with self-lubricating liner - Dimensions and loads Serie aerospatiale - Bague a epaulement, en acier resistant a la corrosion, a garniture autolubrificante - Dimensions et charges Luft- und Raumfahrt - Buchse mit Flansch aus korrosionsbestandigem Stahl mit selbstschmierender Beschichtung - Mafe und Belastung This European Standard was approved by CEN on 18 June 2018. 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 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 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 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, Estonia, 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 FOR STANDARDIZATION COMIT6 EUROPEN DE NORMALISATION e u r o pAi s c h e s k o m i t e e f u r n o r m u n g CEN-CENELEC Management Centre: Rue de la Science 23f B-1040 Brussels 2019 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2288:2019 E BS EN 2288:2019 EN 2288:2019 (E) Contents Page European foreword3 1 Scope4 2 Normative references4 3 Requirements.4 4 Designation8 5 Marking.8 6 Technical specification.8 7 Design recommendation.9 8 Quality management system9 2 BSEN 2288:2019 EN 2288:2019 (E) European foreword This document (EN 2288:2019) has been prepared by the Aerospace and Defence Industries Association of Europe Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association； this 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 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 August 2019, and conflicting national standards shall be withdrawn at the latest by August 2019. Attention is drawn to the possibility that some of the 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 2288:1989. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries 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, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. 3 BS EN 2288:2019 EN 2288:2019 (E) 1 Scope This European standard specifies the characteristics of flanged bushes in corrosion resisting steel with self-lubricating liner and the design recommendation of shafts and housings. The bushes are intended for operation within the temperature range of 55 C to 163 C and assembly with an interference fit into fixed and moving aerospace parts. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2311, Aerospace series Bushes with self-Iubricating liner Technical specification EN 2424, Aerospace series _ Marking of aerospace products EN 3161； Aerospace series Steel FE-PM3801 (X5CrNiCul 7A) Air melted, solution treated and precipitation treated, bar a or D 930 MPa EN 3490, Aerospace series Steel FE-PM3901 (X15CrNil7-3) Air melted Hardened and tempered Bar for machining De 200 mm 900 MPa Rm l 100 MPa 3 Requirements 3.1 Configuration Masses Configuration: according to Figure 1. Dimensions, masses: according to Figure 1 and Table 1. 3.2 Surface roughness According to Figure 1. 3.3 Material Bush: Steel according to EN 3490 or EN 3161. Liner: Self-lubricating wear resistant material consistent with the requirements of EN 2311. 4 / 0(05 A Key a 0,50 to 0,75 b chamfer machined before bonding c chamfer or radius at manufacturer's option d chamfer machined after bonding Figure 1 BSEN 2288:2019 EN 2288:2019 (E) Dimensions in millimetres X 5 EN 2288:2019 (E) Table 1 Dimensions in millimetres 0d0D 0dl 0 -0,25 g 2 0 -0,15 ri 4 -0,4 Nominal size Tolerances xm Nominal size Tolerances |im 68101215161820222528303235404550 mass in kg/1 000 pieces 6 +22 +4 10 +24 + 15 12 0,65 to 0,90 1,5 0,1 to 0,4 2,8* 8 +27 +5 12 +29 + 18 143,54,4* 1014164,15,36,5* 12 +33 +6 1622 0,5 to 0,8 6,3 7,6*9,010,4 1519 +35 +22 259,210,12,515,6* 1620269,711,513,215,916,8 18222812,714,717,620,8 20 +40 +7 2530 0,95 to 1,20 16,519,2*23,430,4“ 22263217,5 21,0* 27,02 9 , 25303523,4 * 28,5 37,040,4 45,5, 2834 +42 +26 40 2,5 41,452,857,464,371,2 30364243,956,2“61,168,480,7* 32 +48 +9 384446,559,564,772,585,590,7 35424773,5*80,290,2106,8123,5“ 40485293,2115,0136,0,158,5180,0, 4552 +51 +32 57113,3138,3 1 5 5 ,176,3197,3* 505862140,9167,6194,3221,0247,7274,4 Only bushes whose masses lie within the bold lines are standard. The recommended sizes are indicated by ' BSEN 228 C O :2019 6 BSEN 2288:2019 EN 2288:2019 (E) Table 2 0d h Permissible radial load Permissible axial static load 0d h Permissible radial load Permissible axial static load StaticDynamicStaticDynamic r u25 C C b 25aC mmmmkNkNkNmmmmkNkNkN 667,53,012,915126,450,6 8 610,04,0 15,6 20186,674,6 816,96,82822210,784,3187,7 612,55,025246,898,5 10821,18,418,428282,9113,0 1029,711,915135,554,2 612,95,220200,080,0 12 823,29,3 71,4 3022225,890,3198,6 1033,513,425264,5105,8 1243,917,630329,0131,6 829,011,615144,557,8 15 1041,916,8 83,6 20213,385,3 1254,821,9 32 22240,896,3 209,4 1574,229,725282,1112,8 831,012,430350,9140,1 1044,717,932378,4151,1 161258,523,487,820233,393,3 1579,131,622263,4105,4 1686,034,33525308,5123,4225,8 1058,320,130383,8153,5 18 1265,826,3 95,9 35459,0183,6 1589,035,520266,6106,6 18112,244,825352,6141,0 1055,922,44030438,6175,4253 20 1273,129,2 104 35524,6209,8 1598,939,640610,6244,2 20141,956,825396,7158,7 1280,432,230493,4197,4 22 15108,843,5 112,2 4535590,2236,1280,2 20156,162,440686,9274,8 22175,070,045783,7313,5 1269,928,025440,8176,3 15123,649,430548,3219,3 2520177,471,0124,4 50 35655,8262,3 307,4 22198,979,640763,3305,3 25231,192,445870,8348,3 50978,3391,3 a cs := 0;43 d (/t 1,2 max. l2 max.) kN based on a unit pressure of 430 MPa. Values of max. and l2 max. derived from the values of fj and /2 given in Table 1. b C2S =吾 c ca:=0,34 叫 -1,5)2 - (/ +2,5)2 kN. Definitions of all loads are given in EN 2311. 7 BS EN 2288:2019 EN 2288:2019 (E) 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 I is less than 10. NOTE 2 If necessary, the code 19005 shall be placed between the description block and the identity block. NOTE 3 Farts manufactured before the issue of this standard shall be accepted without technology code. Table 3 Technology codeTechnology Abonded fabric liner Binjection moulded liner without codeBoth technologies can be used at user's convenience 5 Marking In addition to the manufacturer's own marking, each bush and its package shall be marked with the identity block specified in clause 4 of this standard. The technology used by the manufacturer shall be stated within 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. See also EN 2424. 6 Technical specification According to EN 2311. 8 BSEN 2288:2019 EN 2288:2019 (E) 7 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 ensured if the following mounting is applied. Key 1 shaft 2 bush 3 housing a housing diameter D H7 b shaft diameter d f6 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 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 conditions. 8 Quality management system The manufacturer's operations shall be an approved production organisation for aerospace products and shall demonstrate that it has implemented and is able to maintain a quality management system (e. g. according to EN 9100 or an equivalent aerospace accepted and established quality management system). Figure 2 9 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMIHED BY COPYRIGHT LAW British Standards Institution (BSI) BSI 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 published by BSI Standards Limited. 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