1、CEN PREN2015 82 W 3404589 00b117b 188 Approved by COMITE DE NORMALISATION of A.E.C.M.A. 1981-06-30 -I w I- l E U a a 8 O m F The equivalent versions in French and German languages can be supplied by B.N.A.E., 8. rue Moreau-Vauthier 92100 BOULOGNE-BILLANCOURT - FRANCE. a a U w J U I- a ! a UI 5 w D v
2、) cc 3 U 3 U I- t *; v1 W D w z z a O U 3 W z t- o v) UI w 0 o a 1 a a r: z a W cl w prEN2015 A.E.C.M.A. STANDARD NORME A.E.C.M.A. A.E.C.M.A. NORM Edition 3 February 1982 Supersedes edition 2 September 1975 ENGLISH VERSION BEAR I NGS-AI R FRAME ROLLING DOUBLE ROW SELF ALIGNING BALL BEARINGS IN STEEL
3、 DIAMETER SERIES 2 DIMENSIONS AND LOADS AEROSPACE SERIES ROULEMENTS POUR STRUCTURES DAERONEFS ROULEMENTS EN ACIER, A ROTULE, SUR DEUX RANGEES DE,BILLES SERIE DE DIAMTRES 2 DIMENSIONS ET CHARGES SERIE AEROSPATIALE LUFT- UNO RAUMFAHRT FLUG WE RKLAGER ZWEI R El H IGE PENDELKUG E LLAGE R AUS STAHL DURCH
4、MESSERREIHE 2 MASZE UND BEANSPRUCHUNGEN This industrial standard for the aerospace sector has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on yellow paper in three equivalent versions (English, French, German). It wi
5、ll be submitted to GEN (European Committee for Standardization) as a draft European Standad. Page 2 CONTENTS 1 SCOPE AND FIELD OF APPLICATION 2 REFERENCES 3 DEFINITIONS 4 SYMBOLS 5 MATERIALS 6 LUBRICATION 7 REQUIRED CHARACTERISTICS 8 DESIGNATION 9 MARKING 10 TECHNICAL SPECIFICATION CEN PREN2015 82 3
6、404589 OObLL78 T50 prEN20L5 Page 3 A.E.C.M.A. STANDARD prEN2015 BEARINGS, AIRFRAME ROLLING DOUBLE ROW SELF DIMENSIONS AND LOADS ALIGNLNG BALL BEARINGS IN STEEL - DIAMETER SERIES 2 1 SCOPE AND FIELD OF APPLICATION The standard specifies the characteristics, of double row self aligning ball bearings o
7、f diameter series 2 1) designed to withstand only slow rotations and oscillations under load. They are intended for use between fixed and moving parts of the aircraft structure and their control mechanisms. They shall be used in the temperature range -54 to +121 OC (grease code A) or -54 to +177 OC
8、(grease code BI. 2 RE FERE NC E S ISO/R15/1- 1968, Rolling bearings - Radial bearings - Boundary dimensions - General plan - Part 1 : Diameter series 8,9,0,1,2,3 and 4. ISO/R 201- 1961, Rolling bearings - Radial internal clearance in unloaded raaial groove type ball bearings with cylindrical bore -V
9、alue; EN2031, Steel FE-PL31, Hardened and tempered, Bars. EN2063 , Bearings, airframe rolling - Technical Specification. 3 DEFINITIONS Self aligning ba 11 bearings, full complement (without cage), double row. 4 SYMBOLS A ds Ds dmp Dmp CS Fa Fa ma Fr PO, YS = the deviation of a single bore diameter =
10、 the deviation of a single outside diameter = single plane mean bore diameter deviation = single plane mean outside diameter deviation = permissible static radial load, = bearing axial load = axial component of actual bearing load = permissible static axial load = static radial load = static equival
11、ent radial load = coefficient of axial load. 5 MATERIALS Inner ring : Steel EN20312), 59 to 64 HRC Outer ring : Steel EN20312), 59 to 64 HRC Balls Shields : Corros ion res is ting ma teria 1 Seals : Polytetrafluoroethylene (PTFE); : Steel EN20312), 59 to 64 HRC or polytetrafluoroethylene (PTFE) - gl
12、ass fibre reinforced plastic material. 6 LUBRICATION Ester type extreme pressure grease (Code A), r Synthetic hydrocarbon type extreme pressure grease, general use (Code B), see EN2063. i) See ISO/RI/. 2) For new designs, bearings in corrosion resisting steel should be used for preference; see EN201
13、7. normal group Pm 1) r group 3 Pm 1) 05 06 08 5 16 8 - - l9 10 8 24 03 to On* _ 3to 18 13t023 CEN PREN2015 82 340ll589 OObLL79 997 prEN2015 Page 4 7 REQUIRED C HARAC TER I ST IC C 7. 1 - Dimensions - Tolerances - Clearances - Loads - Mass. Configuration shall correspond with the figure. Dimensions
14、shall correspond with the table. Bearings can be assembled with either seals or shields. 7.2 - Surface roughness. Ra = 0,2 pm for the raceway and rolling elements. Ra = 0,8 pm for the bore, side faces and cylindrical outer surface Bearing . shields code P 0 m E - .- Ii n .- - .- 5 Bearing Code E sea
15、ls with with Detail W of chamfer applicable to bore and outer surface FIGURE TABLE Dimensions in millimetres I Permissible static radial load kN CS Tolerances pm Mass kg/lOOO parts m B O - 0,12 C - 0,12 dl nom, Ad mp Ads - +2 - 10 ADS - +2 - 10 +2 - 11 ADmp O -8 3,7 lg 12 5,7 I 3;: 9.1 14 15 O -9 O
16、- 11 O -8 O - 10 1411 I 57 I 20 +3 - 11 +3 - 13 - - 16.1 I 62 - I - +3 - 14 - 24.3 110 22 24 /G/ 15 to 25 3216 1 170 23,6 Fa rnax. - - where Ys = 3,2 Equivalent static radial load Po,. Load Por resulting from radial and axial loads is calculated according to formula Por = Fr -k 3,2 Fa and shall be l
17、ess than or equal to load Cs given in the table, see EN2063. For ultimate static loads, see EN2063. YS 1) See ISO/R 201. CEN PREN2015 82 W 3404589 OObL180 b09 W prEN2015 Page 5 8 DESIGNATION Each bearing shall only be designated as in the following example : Description block BEARING Ident i ty bloc
18、k EN2015A NO8 P Number of EN standard.- A = code for ester type grease N = code for internal radial clearance, normal group where the following codes are applied : Greases : A = ester type grease B = synthetic hydrocarbon type grease - Types : E = with seals P = with shields P = code for type with s
19、hields -08 = Diameter code for d (see table) Clearances: L ? internal radial clearance, group 3 N = internal radial clearance, normal group Note : If necessary, the originator code S 9005 may be introduced between the description block and the identity block. 9 MARKING In addition to the manufacture
20、rs own marking, each bearing shall be marked, on one side face only using the identity block as defined in clause 8 of this standard. Marking position and method are at the manufacturers option. 10 TECHNICAL SPECIFICATION Bearings supplied to this standard shall conform with the requirements of EN2063
