1、AECMA STANDARD NORME AECMA AECMA NORM prEN 2335 Edition P I December 2001 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 11 ICs: 49.035 Descriptors: ENGLISH VERSION Aerospace
2、 series Bearings, spherical plain in corrosion resisting steel without assembly slot Dimensions and loads Srie arospatiale Rotules lisses en acier rsistant la corrosion sans encoche dassemblase Dimensions et charges Luft- und Raumfahrt Gelen klager aus korrosionsbestndigem Stahl ohne Einfhrnut Mae u
3、nd Belastungen 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 ex
4、perts of the 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
5、 by users and 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 CEDEX Editio
6、n approved for publication 2001-12-28 Comments should be sent within six months after the date of publication to Gulledelle 94 AECMA-STAN 8-1200 BRUXELLES - Mechanical Domain Mr Feltham I aecrna 20 Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under licens
7、e with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 2 prEN 2335: 2001 Blank page Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted wit
8、hout license from IHS-,-,-Page 3 prEN 2335: 2001 I Scope This standard specifies the characteristics of spherical plain bearings in corrosion resisting steel, without assembly slot, with or without swaging groove, with or without lubrication holes and grooves, intended for use in fixed or moving par
9、ts of aircraft structure and control mechanisms. They may be used in the temperature range from - 54 “C to 150 “C. However, as they are lubricated with the following greases (see EN 2337): - ester type very high pressure grease (code letter A), operating range from - 73 “C to 121 “C or, - synthetic
10、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. 2 Normative references This European Standard incorporates by dated or undated reference prov
11、isions 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 revisions of any of these publications apply to this European Standard only when incorporated in it
12、by amendment or revision. For undated references the latest edition of the publication referred to applies. IS0 1132-1 IS0 8075 EN 2030 EN 2337 EN 2424 EN 2491 EN 3161 EN 3490 Rolling bearings - Tolerances - Part I : Terms and definitions Aerospace - Surface treatment of hardenable stainless steel p
13、arts Steel FE-PM43 - Hardened and tempered - Bars O 5 150 mm - 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 Aerospace series - St
14、eel FE-PM3801 (X5CrNiCu17-4) - Air melted - Solution treated and precipitation treated - Bar - a or 0 2 200 mm - R, 2 930 MPa 2) Aerospace series - Steel FE-PM3901 (Xl5CrNi17-3) - Air melted - Hardened and tempered - Bar for machining - De I200 mm - 900 MPa 5 R, I I 100 MPa 2) 3 Symbols, terms and d
15、efinitions For the purpose of this standard, the terms and definitions given in IS0 1132-1 apply. The following symbols for tolerances are used: Ad, : single plane mean bore diameter deviation Ads : deviation of a single bore diameter AD, : single plane mean outside diameter deviation A.D : deviatio
16、n of a single outside diameter a : 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 the inner ring 1) Published as AECMA Standard at the date of publication of this standard 2) Published as AECMA Prestandard at t
17、he date of publication of this standard Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 4 prEN 2335: 2001 4 Required characteristics 4.1 Configura
18、tion, dimensions and masses According to figures 1, 2 and 3 and table 1. The dimensions are expressed in millimetres and apply after surface treatment. 4.2 Surface roughness According to figures 1 and 2. The values are expressed in micrometres and apply before surface treatment. 45“I2 W I a For the
19、inner ring For the outer ring Figure I - Bearing without swaging grooves, code letter S 45 a For the inner ring For the outer ring Figure 2 - Bearing with swaging grooves, code letter R Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMA
20、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 5 prEN 2335: 2001 / / Code letter E: Code letter F: Code letter G: Bearing without lubrication holes and groove inner ring and: the outer ring and: Bearing with lubrication holes on - a lubrication groove on the
21、bore of the inner ring - a distribution groove on spherical surface of the inner or outer ring Bearing with lubrication holes on - a lubrication groove on the outer surface of outer ring - a distribution groove on spherical surface of the inner or outer ring Key 1 Three holes 0d3 at 120 NOTE The con
22、fiauration with or without lubrication hole and lubrication groove amlies to bearings either code letter R or code letter S. Figure 3 Table 1 - ao Mass nin.d = 16 3 13 5 15 8 12 12 11 17 8 32 9 10 49 11oc Without lubrication holes and groove Without swaging groove Maximum values for the user Copyrig
23、ht Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 6 prEN 2335: 2001 axial radial max. reduced normal normal code letter P code letter N code letter P 4.3 C
24、learances and loads See table 2. radial axial a cs Ca Table 2 5 to 60 Internal clearances urn 428,8 38 558,4 50 35 20 760,l 64 1056 104,OO Permissible static loads kN number 1- normal code letter N * +I 35 to 75 +I 40 to 80 25 50 to 100 40 1 60to120 60 5 to 35 20 I 70 I 5,3 I 25 5 to 40 21 6,7 18 5
25、to 50 1 30 1 15 a These values apply to bearings without swaging groove. For bearings with swaging grooves, the push-out loads may be smaller than these values. 4.4 Materials Inner ring: according to EN 2030, 55 HRC to 62 HRC Outer ring: according to EN 3490 or EN 3151,28 HRC to 37 HRC before swagin
26、g 4.5 Surface treatment 4.5.1 Outer ring Dry-film lubricant on the spherical surface (antiscoring treatment) applied according to EN 2491. 4.5.2 Inner ring Passivation according to IS0 8075: code letter T Without surface treatment (passivation): without code letter Copyright Association Europeene de
27、s Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 7 prEN 2335: 2001 Internal clearances (see table 2) Diameter code number d (see table 1) 5 Designation Lubrication holes and grooves
28、 code letter (see figure 3) Swaging grooves code letter (see figures 1 and 2) Surface treatment code letter (see 4.5) EXAMPLE: Dimensional varieties code number for swaging grooves (see table 1) 6 Marking EN 2424, style A The marking position is at the manufacturers option. 7 Technical specification EN 2337 Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
