1、AECMA STANDARD NORME AECMA AECMA NORM AECMA-STAN Gulledelle 94 8-1200 BRUXELLES prEN 2336 Edition P I December 2001 Mr Feltham PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES - STANDARDIZATION (AECMA-STAN) Gulledelle 94 - 8-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 81
2、11 ICs: 49.035 Descriptors: ENGLISH VERSION Aerospace series Bearings, spherical plain in steel with assembly slots Dimensions and loads Srie arospatiale Rotules lisses en acier avec encoches dassemblage Dimensions et charges Luft- und Raumfahrt Gelen klager aus Stahl mit Einfhrnut Mae und Belastung
3、en This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA-STAN (The European Association of Aerospace Industries - Standardization). It is published on green paper for the needs of the European Aerospace Industry. It has been technically approved by the experts of th
4、e concerned Domain following member comments. Subsequent to the publication of this Prestandard, 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 review by users a
5、nd formal agreement of AECMA-STAN it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau - 92138 ISSY-LES-MOULINEAUX CEOEX I I Mechanical Doma
6、in i Edition approved for publication 1 Comments should be sent within six months after the date of publication to 2001-12-28 I I aecma 200 Page 2 prEN 2336: 2001 Blank page Page 3 prEN 2336: 2001 I Scope This standard specifies the characteristics of spherical plain bearings in steel, with assembly
7、 slots, with or without lubrication holes and grooves, intended for use in fixed or moving parts of aircraft structure and control mechanisms. They may be used in the temperature range from - 54 “C to 150 OC. However, as they are lubricated with the following greases (see EN 2337): - ester type very
8、 high pressure grease (code letter A), operating range from - 73 “C to 121 “C or, - synthetic hydrocarbon type very high pressure grease general purpose (code letter B), operating range from - 54 “C to 177 “C. Their field of application when lubricated with grease code letter A is limited to 121 “C.
9、 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisi
10、ons of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. IS0 1132-1 EN 2031 EN 2337 EN 2424 EN 2491 Rolling bearings - Tolerances - Part 1 : Terms and defi
11、nitions Steel FE-PL31 - Hardened and tempered - Bars -Aerospace series 1) Aerospace series - Spherical plain bearings - Technical specification 2) Aerospace series - Marking of aerospace products Aerospace series - Molybdenum disulphide dry lubricants - Coating methods 3 Symbols, terms and definit i
12、ons For the purpose of this standard, the terms and definitions given in IS0 11 32-1 apply. The following symbols for tolerances are used: Admp : ADmp : ADS a: Ads : 4 4. I single plane mean bore diameter deviation deviation of a single bore diameter single plane mean outside diameter deviation devi
13、ation of a single outside diameter angle of tilt of the outer ring with respect to the inner ring, the spherical surface of the outer ring being completely in contact with tt,e inner ring Required characteristics Configuration, dimensions and masses According to figures 1 and 2 and tables 1 and 2. T
14、he dimensions are expressed in millimetres and apply after surface treatment. 1) Published as AECMA Standard at the date of publication of this standard 2) Published as AECMA Prestandard at the date of publication of this standard Page 4 prEN 2336: 2001 4.2 Surface roughness According to figure 1. T
15、he values are expressed in micrometres and apply before surface treatment. a 0,4 for spherical surface with dry-film lubricant; 0,2 for non-coated surface Figure 1 Code letter E: Bearing without lubrication holes and groove I1 Code letter F: Bearing with lubrication holes and groove on groove on out
16、er ring inner ring Code letter G: Bearing with lubrication holes and Figure 2 Page 5 prEN 2336: 2001 06 oa 10 12 6 8 10 12 15 17 20 25 30 35 40 45 50 60 70 80 15 13 22 1,75 17 3 23 28 2 15 20 23 25 4 23 30 43 35 4 40 55 45 23 3 62 33 50 5 7 2 4 60 6 9 2,5 5 4 10 53 70 3 80 4 5 12 73 1 2 2 3 5 1,5 3
17、2 23 - 23 4 3 4s 8 33 Table 1 - B O - 0,06 6 ID d - 0,25 OI Ads - +2 - 10 - +3 - 11 - +3 - 13 - +3 - 15 t 4 1 14 O -8 8 9 10 - - 5 I 16 O -9 12 I 12 12 14 - j-% 35 20 I 20 16 O - 11 - O - 13 +8 - 19 - 03 to 1 20 22 - +-p 20 55 I 7 1 105 1 612 210 35 I 35 25 I 28 - 32 * 70 35 28 I 75 44 49 - ( - I! -
18、 +4 - 19 - O - 15 - 80 I 80 55 45 1 120 a Maximum values for the user Table 2 I d I Ea I F G I 05 I 51 Without lubrication holes and groove a Three holes at intervals of 120” on the periphery Page 6 prEN 2336: 2001 Internal clearances I.im 4.3 Clearances and loads Permissible static loads kN See tab
19、le 3. Table 3 radial max. normal normal code letter N code letter P 8 radial a axial cs Ca 12 0,68 16 099 26 13 45 23 60 32 90 535 110 6,95 160 9,85 270 18,15 380 25,16 Code I axial number 05 06 08 10 12 . normal code letter N j 25 10 15 40 45 40 to 80 500 30 630 36,66 820 48,1 1 O00 60,96 1600 102,
20、76 2 O00 127,8 2 600 182,8 .q- 50 to 100 reduced code letter P 1 to530 1 to40 1 to50 15 20 25 a These loads can only be applied at 90“ with respect to the opening of the slots. These loads shall be applied to the outer ring from the side opposite to the slots. 4.4 Materials Inner ring: according to
21、EN 2031, 60 HRC to 63 HRC Outer ring: according to EN 2031, 58 HRC to 62 HRC 4.5 Surface treatment Dry-film lubricant on the spherical surface of inner or outer ring (antiscoring treatment) applied according to EN 2491. Page 7 prEN 2336: 2001 5 Designation EXAMPLE: Description block Identity block P
22、LAIN BEARING EN2336AP15 Number of this standard Grease code letter (see clause 1) Internal clearances code letter (see table 3) Diameter code number d (see table 1) Lubrication holes and grooves code letter (see figure 2) NOTE If necessary, the code 19005 shall be placed between the description block and the identity block. 6 Marking EN 2424, style A The marking position is at the manufacturers option. 7 Technical specification EN 2337
