1、AECMA STANDARD NORME AECMA AECMA NORM prEN 4265 Edition P 1 November 1996 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - B-1200 BRUXELLES - Tel. (32) 2 775 81 10 - Fax. (32) 2 775 81 11 ICs : Descriptors : ENGLISH VERSION Aerospace series Bearings, spherical pl
2、ain, in corrosion resisting steel Wide series - Dimensions and loads Inch series Srie arospatiale Luft- und Raumfahrt Rotules lisses en acier rsistant la corrosion Srie large - Dimensions et charges Gelenklager aus korrosionsbestndigem Stahl Breite Reihe - Mae und Belastungen Srie en inches Inch Rei
3、he This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Industries). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Technical Committee following
4、 comment by the Member countries. 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 signature of the AECMA Standa
5、rd Checking Centre (NPS) and formal agreement of the Officiai Services of the Member countries 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 R
6、ousseau - 921 38 ISSY-LES-MOULINEAUX CEDEX Edition approved for publication 1996-1 1-29 Comments should be sent within six months after the date of publication to AECMA Gulledelle 94 B-1200 BRUXELLES CI Chairman Mr streicher I aecrna 1996 Copyright Association Europeene des Constructeurs de Materiel
7、 Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 3 prEN 4265 1 Scope This standard specifies the characteristics of spherical plain bearings, metal to metal, in corrosion resisting steel passivated, wide seri
8、es. They are intended for use in fixed or moving parts of the aircraft structure and their control mechanisms. They shall be used in the temperature range -54 OC to +I50 OC. As they are lubricated by means of the following greases: - Grease as per MIL-G-23827 (Code A), operating temperature range -
9、73 “C to + 121 OC or - Grease as per MIL-G-81322 (Code B), operating temperature range - 54 OC to + 177 OC. The range of application for bearings lubricated with grease type A is limited to + 121 OC. In both cases the spherical surface of the outer and inner ring, respectively, have to be provided w
10、ith a dry-film lubricant as per MIL-L-4601 O or equivalent (anti-seizing protection). This European Standard contains also Imperial units (non-SI units) besides the legal SI units. It is emphasized that the use of these non-SI units is not allowed according to Council Directive 80/181/EEC (Council D
11、irective of 20 December 1979 on the approximation of the laws of the Member States relating to units of measurement and on the repeal of Directive 71/354/EEC). These Imperial units are quoted in brackets and only meant for assistance in business and official situations with countries still working w
12、ith them. 2 Normative references IS0 1132 Rolling bearings - Tolerances - Definitions IS0 8075 Aerospace - Surface treatment of hardenable stainless steel parts. EN 2030 Aerospace series - EN 2337 Aerospace series - EN 2424 Aerospace series - EN 2539 Aerospace series - MI L-G-2 3 8 2 7 Steel FE-PM43
13、 - Hardened and tempered - Bars D 5 150 mm - Aerospace series) Spherical plain bearings - Technical Specification - Aerospace series Marking of aerospace products Steel FE-PM61 - R, 2 960 MPa Bars D, 5 120 mm) MIL-SPEC - Grease, aircraft and instrument, gear and actuator screw, NATO code No. G-354 m
14、etric) MIL-G-81322 MIL-SPEC - Grease, aircraft, general purpose, wide temperature range, NATO code No. G-3952) MIL-L-4601 O MIL-SPEC - Lubricant, solid film, heat-cured, corrosion-inhibiting) ! Published as AECMA standard at the date of publication of the present standard 1 Publisher/Editorial Offic
15、es: Information Handing Services, World Headquarters - 1 5 Inverness Way East - P.O. Box 11 54 - Englewood, CO 801 50 USA Previous page is blank Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networki
16、ng permitted without license from IHS-,-,-STD-AECMA PREN 42bS-ENGL L77b II 1012311 001140q 31T Page 4 prEN 4265 3 Symbols Symbols of limit deviations are in accordance with definitions of IS0 11 32. Ca permissible static axial load c, permissible static radial load A, deviation of a single bore diam
17、eter Admp single plane mean bore diameter deviation Aos deviation of a single outside diameter AD, single plane mean outside diameter deviation CY 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.
18、4 Requirements 4.1 Configuration - Dimensions - Masses The Configuration, dimensions, limit deviations, tolerances and masses shall conform with figures 1 and 2 and table 1. Values are those after application of surface treatment. 4.2 Surface roughness In accordance with figures 1 and 2. Values prio
19、r to passivation 4.3 Materials Inner ring : Steel according to EN 2030, hardness 55 HRC 62 Outer ring : Steel according to EN 2539, hardness 28 HRC 38 before swaging 4.4 Surface treatment Passivated according to IS0 8075 Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provi
20、ded by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 5 prEN 4265 1 10,010) I I IW I 6 I I Y 1- m$ o l- Figure 1 : without swaging groove code S (0.010) I I I- Figure 2: with swaging groove code R Dimensions in millimetres (Dimensi
21、ons in inchesi W Z v L U 1 For the inner ring 1 For the outer ring 2 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-,-,-STD-AECMA PREN 42b5-ENGL L7lb E L0
22、123LL 00LLLiOb lid2 Page 6 prEN 4265 -I- _- Figure 3: Code E: Without grease holes and lubrication groove 1 3 holes Oe distributed over the circumference at distance of 120 Figure 4: Code F: With grease holes on inner ring and lubrication groove on: - Bore of inner ring - Spherical surface of the ou
23、ter ring ) 3 holes Oe distributed over the circumference at distance of 120“ Figure 5: Code G: With grease holes on outer ring and lubrication groove on: - Outer surface of outer ring - Spherical surface of the inner or outer ring Copyright Association Europeene des Constructeurs de Materiel Aerospa
24、tial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,- STD.AECMA PREN 42b5-ENGL 1996 0 LOL23LL OOLLLiO7 UT7 U Page 7 prEN 4265 N &I O O m x 2 I Y: i i x 29 O0 go II I m -j o o N o. O0 go II ri o - O8 9) m.9 O0 ti +I 7 o a- c E
25、 Q L al 3 F 1c al 3 - 5 E E .- X al 5 u) al m al C m P U U m al r I- .- - - w 99 p O0 go L II al 4- - in mo -0 O0 O0 o. 9 - -w 0-00 I! 0.0. o. 9 O000 +I+, E a“ Q Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reprodu
26、ction or networking permitted without license from IHS-,-,-STD-AECIA PREN 42b5-ENGL L77L SP 1OL23LL 0011403 T3C Page 8 prEN 4265 4.5 Loads and clearances Table 2 Dimensions in millimetres I d I Permissible static loads kN I RadG clearance4) Code) Nominal n diameter I with lubrication groove Reduced-
27、code P 0,002 to 0,o (0,0001 to 0,0004) 0,003 to 0,012 (0,0001 to 0,0005) 0,004 to 0,015 (0,001 5 to 0,0006) 0,005 to 0,02 (0,0002 to 0,0008) imensions in inches) Axial clearance4) Normal- code N max. 0,12 (0,0047) 0,229 (0,0090) Reduced- code P max. 0,035 (0,001 4) 0,04 (0,001 6) 0,05 (0,0020) 0.06
28、(0,0024) 1 The code corrsponds to nominal diameter d in 1/16 inch. 1 Definition and testing for ultimate static loads according to EN 2337, annex B. 3, These values apply to loose spherical bearings. For installed bearings, the push-out loads may be smaller than these values. 4, Definition and testi
29、ng according to EN 2337, annex A. 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-,-,-, STD-AECMA PREN 42b5-ENGL L97b LOL23LL OOLL409 971 Page 9 prEN 4265
30、5 Designation EXAMPLE: Description block Identity block SPHERICAL PLAIN BEARING Number of this standard Code for grease (see clause 1) Code for clearance (see table 2) Code for diameter (see table 1 ) Code for grease holes and lubrication groove (see figure 3, 4 and 5) Code for swaging grooves (see
31、figure 1 and 2) NOTE: If necessary, the code 19005 shall be placed between the description block and the identity block. 6 Marking Each spherical plain bearing shall be marked at least in accordance with EN 2424, style A. In addition, the bearing may be marked with manufacturers part number. Marking position and method are at manufacturers option. 7 Technical Specification according to 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-,-,-
