1、AECMA STANDARD prEN 4041 NORME AECMA Edition P 1 1 1 AECMA NORM August 1997 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) I Gulledelle 94 - 8-1 200 BRUXELLES - Tel. I+32) 2 775 81 10 - Fax. (+321 2 775 81 11 I ICs : Descriptors : J Nota - Extra copies can be supplied by B.N.A
2、.E. - Technopolis 54 199, rue Jean-Jacques Rousseau - 921 38 ISSY-LES-MOULINEAUX CEDEX Edition approved for publication Comments should be sent within six months CI Chairman after the date of publication to ENGLISH VERSION Aerospace series Bearings, airframe rolling Rigid single row ball bearings in
3、 corrosion resisting steel, with extended inner ring and flanged alignment bush Dimensions and loads Srie arospatiale Roulements pour structures daronefs Roulements en acier rsistant la corrosion, rigides, une range de billes, avec bague intrieure jupe et bague dalignement collerette Dimensions et c
4、harges Luft- und Raumfahrt Flugwerklager Einreihige Rillenkugellager aus korrosionsbectndigem Stahl mit einseitig verlngertem Innenring und selbsteinstellendem Flansch Mae und Belastungen This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (The European Associatio
5、n 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 comment by the Member countries. Subsequent to the publication of this Prestandard, the technical content shall no
6、t 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 Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted
7、 as a draft European Standard to CEN (European Committee for Standardization) for formal vote. 1997-08-29 AECMA Gulledelle 94 6-1 200 BRUXELLES Mr streicher I l I I aecma 1997 Page 3 prEN 4041 : 1995 1 Scope This standard specifies the character.istics of rigid single row ball bearings in corrosion
8、resisting steel, with an extended inner ring and a solid or lightweight flanged alignment bush, designed to withstand only slow rotations and slight oscillations under load. They are intended for use in airframe fixed and moving elements and in flight control linkages. The bearings defined in this s
9、tandard shall be used in the temperature range -54 OC to 150 “c. However, as they are lubricated with the following greases (see EN 2337): - ester type extreme pressure grease (code AI, operating range -73 OC to 121 OC or - synthetic hydrocarbon type extreme pressure grease (code BI, operating range
10、 -54 OC to 177 OC, their field of application when lubricated with code A grease shall be limited to 121 aC. 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
11、 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 by amendment or revision. For undated references the latest edition of the publication referred t
12、o applies. IS0 11 32 Rolling bearings - Tolerances - Definitions IS0 8075 Aerospace - Surface treatment of hardenable stainless steel parts EN 2030 Aerospace series - Steel FE-PM43 - Hardened and tempered - Bars D I 150 mm) EN 2226 Aerospace series - Steel FE-PM43 - Hardened and tempered - Hand and
13、die forgings D, I 150 mm) EN 2424 Aerospace series - Marking of aerospace products EN 2502 Aerospace series - Steel FE-PM66 - 930 MPa 5 R, I 1080 MPa - Bars D, 5 150 mm) EN 2503 Aerospace series - Steel FE-PM66 - 930 MPa 5 R, I 1080 MPa - Forgings D, 5 150 mm) EN 2539 Aerospace series - Steel FE-PM6
14、1 - Solution annealed and precipitation hardened - R, 2 960 MPa - Bars D, I 120 mm2) EN 3727 Aerospace series - Bearing, airframe rolling, rigid single row bail bearings with flanged alignment bush - Technical specification2) 3 Definition Bearing, full complement of balls (without retainer), with fi
15、lling slot. 1 Published as an AECMA Standard at the date of publication of this standard. 1 Published as an AECMA Prestandard at the date of publication of this standard. Previous page is blank STDmAECMA PREN 404L-ENGL 1777 1012311 0013337 73T Page 4 prEN4041 : 1995 4 Symbols The tolerance definitio
16、ns are given in IS0 1 132. single plane mean bore diameter deviation deviation of a single bore diameter axial internal clearance radial internal clearance assembled bearing inner ring face runout with raceway assembled bearing outer ring face runout with raceway radial runout of assembled bearing i
17、nner ring radial runout of assembled bearing outer ring permissible static axial load permissible static radial load 5 Required characteristics 5.1 Configuration, dimensions, limit deviations, clearances, torques and masses See figures 1 to 4 and table 1. The dimensions are expressed in millimetres,
18、 apply after surface treatment. The bearings are fitted either with seals or shields; the flanged alignment bush is either solid or lightweight. 5.2 Loads See tables 2 and 3. 5.3 Surface roughness Raceways and balls: R, = 0,2,um Bore, side faces of bearing and bearinglbush swivelling surfaces: R, =
19、0,8 ,um Embedding diameter and support face of the bush: i?, = 1,6 prn General state: R, = 3,2 ,um The values apply prior to surface treatment. 5.4 Materials Bush: Inner ring: Outer ring: Balls: EN 2030, 1 58 HRC Shields: corrosion resisting material Seals: EN 2502 or EN 2503 or EN 2539, 29 HRC to 3
20、7 HRC EN 2030 or EN 2226, on the side with raceway 2 58 HRC, on the side with fixing holes 20 HRC to 30 HRC EN 2030 or EN 2226, 2 58 HRC polytetrafluoroethylene (PTFE) or polytetrafluoroethylene (PTFE) reinforced with glass fabric. 5.5 Surface treatment Passivation according to IS0 8075: code T With
21、out surface treatment: without code Page 5 prEN 4041 : 1995 00 I I I- I I 0 dl I I OJ CI I st In both positions al 180 from the bearing NOTE: Break sharp edges 0.1 to 0,4; the edges of spherical surfaces shall be carefully rounded off. Figure 1 O 12 x 05.1 -0.05 I Ei “ Figure 2 - Solid flanged align
22、ment bush, code C 1) Transition area at the manufacturers discretion Figure 3 - Lightweight flanged alignment bush, code D STD-AECMA PREN 4041-ENGL L777 LOL2333 0033337 502 O -0.1 35 38 43 48 53 67 Page 6 prEN 4041 : 1995 JH nrao Num- ber o min. 10.15 holes ) i10 19 12“ 2 o 30 2020 4 0,3 15 to 2O .
23、ora - 20 1 O40 6 21 130 22 Type with shields Code P Type with seals Code E NOTE 1 - The process for installation of seals and shields is at the manufacturers option. NOTE 2 - The shields shall not extend beyond width C. Figure 4 Table 1 ) Maximum values for the user 1 See EN 3727 H2LK Y14.FIYIQIBiI
24、- 1,3 1,27 f,2 0.92 1,75 2,13 1,78 2.48 3,18 1,72 2,08 I ,75 2,44 3,13 1.67 2 1,68 2.37 3,03 1,ll 1,29 1,16 1,46 1.78 32 35 40 0.84 45 50 63 0,99 1,1 1 ,O6 1,3 1.17 1.18 Page 7 prEN 4041 : 1995 Table 2: Loads for bearings with code C alignment bush Permissible static loads) kN Axial A F. rnax. F. ma
25、x. L I U d Code for a rnax. disolacement of: I for a rnax. disolacernent of: 0.1 mm I 0.15 mrn I 0.2 mm I 0,1 mm I 0.15 mrn I 0.2 rnm 1 I I I I 24,5 32 35 25.5 29,5 40 45 32,4 35.3 50 63 39,2 1 Axial and radial loads may be applied simultaneously. For ultimate static loads, see EN 3727. Table 3: Loa
26、ds for bearings with code D alignment bush I I Permissible static loads) r Axial kl F8 mar. F8 max. r=! d Code Radial cs k“ I I I for a max. displacement of: 1 for a max. displacement of: I 0,l mm I 0,15 rnm 1 0.2 rnrn I 0.1 mrn I 0.15 mrn 0.2 mm 24.5 25.5 29,5 32.4 1,37 1,57 35.3 39.2 H 2LK (Y 14.F
27、IY IQIB) Page 8 prEN 4041 : 1995 Description Block 6 Designation Identity Block EXAMPLE: NOTE: If necessary, the originator code 19005 shall be placed between the description block and the identity block. 7 Marking EN 2424, style A. The marking position is at the manufacturer?s option. 8 Technical specification EN 3727
