1、A.E.C.M.A. STANDARD NORME A.E.C.M.A. A.E.C.M.A. NORM prEN 3048 issue P 1 October 1988 EDITE PAR LASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATERIEL AROSPATIAL 88, boulevard Malesherbes, 75008 PARIS -TEL. 45-63-82-85 UDC : 629.7.02: 621.822.3-408.2-72,004.1 : 669.14.018.89. Key words : Aircraft ind
2、ustry, spherical bearings, corrosion resisting steel, self-lubricating parts, dimensions, loads. ENGLISH VERSION Aerospace series Bearings, spherical plain in corrosion resisting steel Srie with self-lubricating liner, light series elevated loads at ambient temperature Dimensions and loads rospatial
3、e Luft- und R umfahrt Rotules en acier rsistant la corrosion garniture autolubrifiante, srie lgre charge leve temprature ambiante Dimensions et charges Gelenklager aus korrosionsbestndigem Stahl mit selbstschmierender Beschichtung, leichte Reihe hohe Belastungen bei Umgebungstemperatur MaBe und Bela
4、stungen This Aerospace Series pre-standard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on green paper for the needs of AECMA-Members. It has been technically approved b y the experts of the concerned AECMA Commi
5、ssion following comment by the Member countries. Subsequent to the publication of this pre-standard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and signature of
6、the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for final vote. Nota - Extra copies can be supplied by B.N.A.E. - 8, rue Moreau-Vauthier -
7、92100 BOULOGNE-BILLANCOURT Edition approved for publication Comments should be sent within six months CI Chairman after the date of publication decision 17th October 1988 A.E.C.M.A. Mr. MOUTARDE 88, Bd. Malesherbes 75008 PARIS - FRANCE aecma 19E COPYRIGHT Association Europeene Des Constructeurs de M
8、ateriel AerospaceLicensed by Information Handling ServicesO O e e - AECMA PREN3048 88 10L5311 0004783 -a prEH 30413 Page 3 1 This stmdard specifles ehe c!i:racteristics of spherics1 plain bezrings in comosioii resisting steel, wizh celf-lubric:iCig liner, light serjes. Yney are intesicied for me ?LE
9、 fixed- ox Eoving pciztr; of the airceft structure and c.cr.tiiol mecbai:2smc. Cccpe and fie1.d of appication They sliail be used :Ln the tempez r- e EN 2/55 3 Symbole Ads = the dsv3-ntj-on of a sfiigle bore dimmeter ADS = the ctevation 05 a sing1.e Gutside diasieter 4dmp = single plane een bore dlu
10、meter devia.tion ADmp = single plane mean outside diamstxr deviation (x = maxinum angle of tilt of the auter ring with respeci: to the inirer ring, the spherical surface of the outer rirzg being completely in coritact with the inner ring. . . . 4 Required characteristics 4.1 Dio;enciona .- Tol.eranc
11、es - Eass ConFiguration : See figures 1 or 2. Diniensioils, tolerarxes and musc ; See figures and/or tabh 1, 4.2 Surface rougliness See figures, 4.3 Elaterials Iririer rlng : Steel E Self-lubricating low rictiori wear resfstarit Eaterid consistent with tia requirenents of Eh: 2755. 4.4 Suriace treat
12、nent Chromium platfrig (when specified in designation) : EN 2132. Thickness : IS to 50 IM on the sphericai surface of the inner ring. 1) Zii preparation Previous page - -_- is blank COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesAECMA
13、PREN30Li8 88 1012311 0004782 T W I prEN 3048 Page 4 r-I ILI -8 1 .(XI o3 Break sharp corner /I 4 I R max. 0,12 Without swaging grooves - Code S With swaging grooves - Code R Figure 1 Figure 2 Table 1 Detail W Dimensions in millimetres - Mass %3 9 17 26 40 65 115 160 229 31 5 460 - - - - - - - - - Ta
14、 in nax. degree 0.9 11 9 1 ,o 10 9 1,2 7 6 - 1,5 7 rl NP +0,1 o o -0.2 20.2 24,2 - 28,2 - 0,7 0 0.8 - -Or3 33,2 39.4 44,4 51,8 - 0.9 - 0 58.8 - 64,8 71.8 1,4 -0,4 1.0 - d DG B Tolerances pm - Ads Admp II 12 12 1221 7 I 10 I 14,3 I 17,5 I 18,7 22,3 0,8 2; +6 -1 5 $3 -1 1 O -8 O -10 21,2 25,5 24.9 29,
15、8 30.0 36,l 1,0 I 2;: +8 -1 9 $3 -1 3 30 30 1471 18 I 22 I 35 35 55 20 25 40 40 62 22 28 45 45 68 25 32 50 50 75 28 35 o -13 O -1 2 +10 -23 +3 -1 5 I) Attention should be paid to the possible indentation of the suppofi mountings by the inner ring bearing faces. COPYRIGHT Association Europeene Des Co
16、nstructeurs de Materiel AerospaceLicensed by Information Handling ServicesAxial a 357 Axial for spherical bearing with swaging gr o oves after swaging 2) 197 - AFCMA - PREN3048 - 88 R- lOlE33L 0004783 L m- prEN 3043 Page 5 4.5 Loads and starting torque values See table 2, a Table 2 Permissible stati
17、c loads kN Permissible dynamic radial loads 25000 cycles kN 25,5 d Nominal mm Starting torques N.m Radial CS ode - 12 12 46,4 15 17 - 15 17 79 15 102,6 I I 10,6 I 8 ,O 56,4 0,12 to 0,o; 20 20 147,4 17,O I 13,7 I 81 ,o 25 30 35 - - 142,8 22,2 26, 0,25 to 1,Oi 25 30 221,7 285,6 374 95 0,40 to 2,Ol 35
18、32,5 I 187,3 40 45 50 - - - 462,7 0,60 to 3,51 40 45 605 $8 81 ,6 302,9 105,6 47,O 384 ,O 50 768 ,O 1) Bearings without swaging grooves. 2) These values are given for information. The actual values depend on the method of swaging, 5 Designation Each spherical plain bearing shall only be designated a
19、s in the following example : Description Block Identity Block EN3048S( Ti I REARING, SPHERICAL PLAIN Number of EN standard I S = Code for type without swaging grooves (See figure 2) J 06 = Code diameter d (See table 1) -Only when chromium plated ball is required Where the following codes are applied
20、 : R = with swaging grooves S = without swaging grooves Note : If necessary, the or-ginateur code S9005 may be introduced between tlie description block and the identity block. COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesAECMA PREN3
21、0118 88 M LOL23LL 00047811 3 _! prEN 3048 Page 6 6 Marking In addition to the manufacturers owL narking, each spherical plain bearing shall be marked, using the identity block as defined in clause 5 of this standard. Marking position and method are at the manufacturers option, but shall not adversely affect the functioning of the bearing. 7 Technical specification Spherical plain bearings supplied to this standard shall conform with the requirements of EN 2755. COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling Services
