1、c- 3. CEN EN*Z50L 88 3404589 0016790 7 W . EUROPEAN STANDARD NORME EUROPENNE EUROPAISCHE NORM EN 2501 January 1988 UDC : 629.7.02 : 621.822.3-408.2-72.004.1 : 669.14.018.89 Key words : Aircraft industry, spherical bearing, corrosion resisting steel, linings, self-lubricating parts, dimensions, loads
2、. English version Aerospace series Bearings, spherical plain in corrosion resisting steel with self-lubricating liner and wide inner ring Dimensions and loads Srie arospatiale Luft- und Raumfahrt Gelenklager aus korrosionsbestndigem Stahl mit selbstschmierender Beschichtung und breitem Innenring Mae
3、 und Belastungen Rotules en acier rsistant tl la corrosion garniture autolubrifiante et bague intrieure large Dimensions et charges This European Standard was accepted by CEN on 1 987-1 1-1 6. CEN members are bound to comply with the requirements of CEN Internal Regulations which stipulate the condi
4、tionsfor giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical referencesconcerning such national standards may be obtainedon application to the CEN Central Secretariat or to any CEN member. This European Standard exists in three
5、 official versions (English, French, German). Aversion in any other language made by translation under the responsibilityof 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 organizations of
6、 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 Brderode 2, 6
7、-1 O00 Bruxelles 0 CEN 1987 Copyright reserved to all CEN members Ref. Nr EN 2501 : 1987 E r CEN EN*E503 88 W 3404589 O036793 9 EN 2501 Page 2 Brief history This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After enquiries and votes carried out
8、in accordance with the rules of this Assoc.iation, this draft has successively received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to C.E.N. According to the Common CEN/CENELEC Rules, following countries are bound t
9、o implement this European Standard: c- 1 4% CEN EN*i(i503 AA E 3404589 0036792 O E EN 2501 Page 3 1 This standard specifies the characteristics of beatings, spherical plain in corrosion resisting steel with self lubricating liner and wide inner ring. They are intended, principally, for use in rod en
10、d fittings. They shall be used in the temperature range -55 to +150 OC. Scope and field of application 2 References EN 2023, Aerospace series - Bearings, spherical plain, in corrosion resisting steel with self lubricating liner - Normal series - Dimensions and loads EN 2030, Steel FE-PM43 - Hardened
11、 and tempered - Bars D 150 mm - Aerospace series EN 2064, Bearings, spherical plain in corrosion resisting steel with self lubricating liner - Technical specification - Aerospace series EN 2136, Steel FE-PM42 - 900 MPa L Rm - 1100 MPa - Bars De L 100 mm - Aerospace series EN 2539, Aerospace series -
12、 Steel FE-PM61-Rm 2 960 MPa - Bars De 150 mm 1) - 3 Symbols A ds * Ds A dmp = single plane mean bore diameter deviation * Dmp = single plane mean outside diameter deviation 01 = maximum displacement angle which can be formed by the outer ring with = the deviation of a single bore diameter = the devi
13、ation of a single outside diameter the inner ring the spherical track of the outer ring being fully in contact with the inner ring. 4 Required characteristics 4.1 Dimensions - Tolerances - Masses Configuration shall correspond with figure. Dimensions, tolerances and masses shall correspond with tabl
14、e 1. 4.2 Loads - Starting torques Loads and starting torques shall correspond with table 2. 4.3 Materials Inner ring : steel EN 2030 Outer ring : steel EN 2136 or steel EN 2539 Liner : Self-lubricating low friction wear resisting material consistent with requirements of EN 2064. 1) In preparation. C
15、EN EN*Z50L 88 3404589 OOLb793-2 EN 2501 Page 4 / Break sharp corner R max. 0,2 Detail W 21 Figure Table 1 -. _- - Dimensions in millimetres Tolerances pm DBC . .- K d, rl N P FI I CY Mass d 1) CodelNominal O o -0,2 0 +O.ljdeS:ees o g -0,06 k,i bmp AD bmp bs min. - - 16,2 0,7 0,2 9 15 o 8 22 22,2 13,
16、5 23,4 10 48 0.3 -_- 15,O 9,0 o i5 06 6 18 14 8 -8 -13 I - $2- 8 21 15 10 0 + 6 -8 -10 17,5 11,o to 18,4 08 10 10 26 20 13 - .- - - 0,9 0,3 -9 -15 . ._ I 1) Attention should be paid to the possible indentation of the support mountings by the inner bearing faces. Table 2 Permissible static loads kN P
17、ermissible d nominal rnm radial c, 6,O I 41,5 8,O I 63,O 10.0 105,l axial Ca 9,5 18,6 dynamic axial radial after swaging loads 1) 25000 cycles kN 4,5 16.6 6,s 25.2 10,5 42.2 Starting torques N.m 0,12 to o,ao 1) These values are given for information. The actual values depend on the method of swaging
18、. CEN EN*2501 dB W 3404589 O036794 4 EN 2501 Page 5 5 Designation Each spherical plain bearing shall only be designated as in the following example : Description block Id entity block I SPHERICAL PLAIN EN250 1-06 7-T Note : If necessary, the originator code S9005 may be introduced between the descri
19、ption block and the identity block, 6 Marking In addition to the manufacturers own marking, each spherical plain bearing shall be marked, using the identity block as defined in clause 5 of this s tandard. Marking position and method are at the manufacturers option. 7 Technical specification Spherica
20、l plain bearings supplied to this standard shall conform with the requirements of EN 2064. Qualification testing of these bearings is unnecessary providing that : - manufacturers have already been qualified to supply bearings in accordance with EN 2023 ; - material and methods of manufacture are exactly the same for these bearings as those used for EN 2023.
