1、CEN PREN2501 87 M 3YOY587 O010001 I E FINAL DRAFT EUROPEAN STANDARD prEN 2501 6 *c* NORME EUROPEENNE EUROPISCHE NORM August 1987 UDC : 629.7.02 : 621.822.3-408.2-72.004.1 : 669.1 4.018.89 Key words : Aircraft industry, spherical bearing, corrosion resisting steel, linings, self-lubricating parts, di
2、mensions, loads. 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 breite
3、m Innenring Mae und Belastungen Rotules en acier rsistant la corrosion garniture autotubrifiante et bague intrieure large Dimensions et charges This draft European Standard has been drawn up by AECMA (Association Euroenne des Comtructeurs de Matriel Arospatial). It is submitted to CEN members for fi
4、nal vote. -. .- If this draft becomes a European Standard, CEN members are bound to comply with the requirements of the CEN Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. This draft European Standard was
5、 established by CEN in three official versions (English, French, German). A version in any other language made by translationunder the :esponsi- bility of 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 nati
6、onal standards organizations of 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 Centra
7、l Secretariat : Rue Brderode 2, B-1000 Brussels CEN Copyright reserved to ali CEN members 960 KPa - Bars De - 150 mm 1) il EN2136, EN2539, 3 Symbols Ads = the deviation of a single bore diameter Ds = the deviation of a single outside diameter dmp = single plane mean bore diameter deviation *Dmp = si
8、ngle plane mean outside diameter deviation .cy = maximum displacement angle vhich can be formed by the outer ring vith 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
9、correspond with figure, Dimensions, tolerances and masses shall correspond with table 1. 4.2 Loads - Starting torques Loads and starting torques shall correspond vith table 2. 4.3 Materials Inner ring : steel EN2030 Outer ring : steel EN2136 or steel EN2539 Liner. : Self-lubricating low friction. we
10、ar resisting material consistent with requirements of EN2064. 1) In preparation. 20 CEN PREN2501 87 3404589 0010004 7 = ppxlq 2501 Pagz I 1 P R CY !Mass !,2 ?Idegrees! g 0,7 0,2 9 i 15 8 l 22 0,9 0,3 - - 10 48 in I E I - - -I- c Permissible dynamic Parmissible static io i 86 105 42,2 I 00,12 x F Sta
11、rting torquer N.m 0,12 to 0.80 .-_- / rak harp mrnw . R mrx. 0.2 Detail W Figure Table - Dimensions in millimetres I 1) Attention should be paid to the possible indentation of the support mountings by the inner bearing faces. Table 2 87/76993 t i prEN 2501 Page 5 5 Designation Each spherical plain b
12、earing shall only be designated as in the following example : Description block SPHERICAL PLAIN Identity block EK2 50 1 -! T Number of EN standard 1 06 = Code diameter d (See table 1) Note - If necessary, the originator code S 9005 may be introduced between the descript.iq bl-ock and the identity bl
13、ock. 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 o tandard. Marking position and method are at the manufacturers option. 7 Technical specification Spherical plain bearings supplied to th
14、is standard. shall conform with the requirements of EN2064, Qualification testing of these bearings is unnecessary providing that : - manufacturers have already been qualified to supply bearings in accordance with EN2023 ; c. .* i i - material and methods of manufacture are exactly the same for these bearings as those used for EN2023. I 30
