1、AECMA PREN20b4 80 W 1012311 0001L2 4 W A. E .C ,M .A. STAN DARD NBRME A.E.C.M.A. A.E.C.M.A. NORM DRAFT pu EN2064 ENGLISH VERSION BEARINGS SPHERICAL PLAIN IN CORROSION RESISTING STEEL WITH SELF LUBRICATING LINERS TECHNICAL SPECIFICATION AEROSPACE SERIES ROTULES EN ACIER Rl%Wl-ANT A LACORROSION LU FT-
2、UND RAUMFAM R? A GARNITURE AUTOLUBRIFIANTE SPEC i F ICATI ON TECHNIQUE SERI E AEROSPAT I ALE GELENK LAGE I3 AUS NICHTROSTENDEM STAHL MIT SELBSTSCHM I E REND ER BESCHICHTUNG TECHNISCH E SPEZI FI KATION The text of this standard, which exists in three equivalent versions (English, French, German) has
3、been drawn up under the responsability of A ECMA (Association Europenne des Constructeurs de Matriel Arospatial) and has been circulated to Official Services. Any reseniations expressed by Official Services and not resolved in this issue, have been incorporated in the history sheet which has accompa
4、nied this prEN to CEN. It is published on yellow paper as a draft European Standard intended to receive, under the same presentation and according to its own rules, the approval of CEN (European Committee for Standardization). Approved by The equivalent versions in French and German languages can CO
5、MITE DE NORMALISATION be supplied by B.N.A.E., 8, rue Moreau-Vauthier of A.E.C.M.A. 1978-10-27 92100 BOULOGNE-BILLANCOURT - FRANCE. - AECMA PREN20bL1 BO 1012311 0001913 b t prEN2064 Page 2 CONTENTS 1 2 3 4 5 a 7 8 9 10 SCOPE FIELD OF APPLICATION REFERENCES DEFINITIONS AND SYMBOLS MAT ER !ALS R EQU I
6、 R ED CHAR ACTE R IST ICs INSPECTIONS AND TESTS QUALIFICATION CONDITIONS ACCEPTANCE CONDITIONS MARKING, PACKAGING AND CERTIFICATE OF CONFORMITY ANNEX A FLUIDS - MAIN PROPERTIES ANNEX B TABLE Of INSPECTIONS AND TESTS TO BE PERFORMED FR THE QUALIFICATION OF BEARINGS DEFINED IN STANDARDS EN2022 AND EN2
7、023 TABLE OF INSPECTIONS AND TESTS TO BE PERFORMED FOR THE LINERS ANNEX C INDIVIDUAL. QUALIiCATION OF BEARINGS WITH SELF-LUBRICATING DRAFT EUROPEAN STANDARD AEROSPACE JERJES prEN2064 BEARINGS, SPHERICAL PLAIN, IN CORROSION RESISTING STEEL WITH SELF LUBRICATING LINERS TECHNICAL SPECIFICATION I AECMA
8、PREN2064 80 W 1012311 0001915 T W E prEN2064 Page 4 The inner ring is wider than the outer ring which permits a rocking movement, in addition to rotation. The outer ring does not contain any engagement slot. This outer ring may be provided with swaying grooves for direct fitting to the structure. 4.
9、1.2 Loads Permissible static loads. The permissible static load is the maximum permissible load (without safety factor), which can be applied statically. It is defined as a unit pressure multiplied by the effective projected area (radial or axial), for defor- mations that are compatible with correct
10、 Operational behaviour. Permissible static radial load Cs, The permissible static radial load corresponds to a unit pressure of 410 MPa. Permissible static axial load Ca. The permissible static axial load corresponds to a unit pressure of 205 MPa. Ultimate static load. The ultimate static radial or
11、axial load is 1,5 times the value of the permissible static loads and is defined as being the highest load the bearing can support, without failure occurring. Permissible dynamic radial load C25. The permissible dynamic radial load C25 is the load that a bearing can withstand, when subjected to an o
12、scillation of 2 25O (total amplitude 50“) for 25000 cycles, at the rateof 10 cyclesper minute, without the wear on the self lubricating liner exceeding the value specified in clause 6.4.6. This is equal to : 3 2,5 4.1.3 Starting torque The starting torque at zero load is the maximum torque recorded,
13、 when the inner ring starts to revolve, whilst the outer ring is stationary. 4.2 Symbols Cs = Ca = permissible static axial load C25= permissible dynamic radial load at 25000 cycles permissible static radial load 5 MATERIALS The prescribed materials are specified infhe dimensional standards. 6 REQUI
14、RED CHARACTERISTICS 6.1 Dimensions, tolerances and masses These shall comply with the values quoted in the dimensional standards, see 7.2. 6.2 Chemical characteristics of the material The chemical composition of the materials shall complywiththespecifications listed inthedimensional standards, see 7
15、.3. 6.3 Physical characteristics 6.3.1 Physical appearance 6.3.1. I The bearing Bearings shall be free from scoring, cracks, splits, burrs and any other defects likeiy to impair their characteristics and their endurance, see 7.1 .l. 6.3.1.2 The self lubricating liner The liner shall be free from all
16、 traces of contaminating products and shall not show signs of any tearing or stripped portions, see 7,1.2. 6.3 2 Hardness Inner ring 55 n P C n .- m .- L I 9 Y- O e O c. m C u, M B) .- .- O - AECMA PREN20611 80 M 1012311 0001930 b M prEN2064 Page 19 171 1 1711 1Zl 1ZI 1z 1 109 8 o9 109 8 o9 10 8 O5 1FiP 8 9P 19P 8 9t 10P 8 OP 10P Td OP 14c 8 Fi E f +- TI c m M K O ta CI W c 3 r: i- .cT u x (7 L al O cl2 O ta TI c O .- 3 - .- I e 5 .- E L - E, L o M O u al M al c, c E .- 2 5 iz M E al 9 K m m o m w “# x E u .E a m v) c U o w J m 4 i-
