1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication prEN 4040 Edition P 1 September 1996 CI Chairman Comments should be sent within six months after the date of publication to PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - B-1200 BRUXELLES -
2、Tel. (32) 2 775 81 10 - Fax. (32) 2 775 81 11 ICs : Descriptors : ENGLISH VERSION Aerospace series Bearings, spherical plain in corrosion resisting steel with self-lubricating liner with wide inner ring Elevated loads at ambient temperature Dimensions and loads Srie arospatiale Luft- und Raumfahrt R
3、otules en acier rsistant la corrosion garniture autolubrifiante avec bague intrieure large Srie charge leve temprature ambiante Dimensions et charges Gelenklager aus korrosionsbestndigem Stahl mit selbstschmierender Beschichtung mit breitem Innenring Hohe Belastung bei Raumtemperatur MaBe und Belast
4、ungen 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 followi
5、ng 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 Stan
6、dard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. AECMA 1996-09-30 Gulledelle 94 B-1200 BRUXELLES Mr Oestreicher STD-AECMA PREN 40iO-ENGL
7、L77b LOL2333 0033752 895 W Page 3 prEN 4040 : 1996 1 Scope This standard specifies the characteristics of spherical plain bearings in corrosion resisting steel with self-lubricating liner, with wide inner ring, for elevated loads at ambient temperature. They are intended for use between fixed or mov
8、ing parts of the aircraft structure and their control mechanisms. The spherical plain bearings defined in this standard are used from - 55 OC to + 163 OC. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative refe
9、rences 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 by amendment or revision. For undated references the
10、 latest edition of the publication referred to applies. IS0 11 32 IS0 8075 EN 2030 EN 2424 EN 2539 Aerospace series - Steel FE-PM61 - Solution annealed and precipitation hardened - EN 2755 Aerospace series - Bearings spherical plain in corrosion resisting steel with self- Rolling bearings - Toleranc
11、es - Definitions Aerospace - Surface treatment of hardenable stainless steel parts Steel FE-PM43 - Hardened and tempered - Bars D I 150 mm - Aerospace series 1) Aerospace series - Marking of aerospace products Rm 2 960 MPa - Bar De I120 mm 2) lubricating liners - Technical specification 2) 3 Symbols
12、 The definitions of tolerances and clearances are given in IS0 1 132. Ads AD Adrnp AD, a = the deviation of a single bore diameter = the deviation of a single outside diameter = single plane mean bore diameter deviation = single plane mean outside diameter deviation = angle of tilt of the outer ring
13、 with respect to the inner ring, the spherical surface of the outer ring being completely in contact with the inner ring. 4 Required characteristics 4.1 Configuration : see figure 1 or 2 ; the bearings are fitted with or without swaging grooves. Values : see figure 1 or 2 and table 1: values after s
14、urface treatment. Dimensions - Tolerances - Masses 4.2 Surface roughness See figures 1 and 2 ; the values are expressed in micrometres, apply before surface treatment. 4.3 Materials Inner ring : EN 2030, 55 8,00.12 Figure 2: Type with swaging grooves, W I_ code R STD-AECMA PREN qOLiO-ENGL L77b W LUL
15、23LL 001175Li bb8 Page 5 prEN 4040 : 1996 STD*AECMA PREN 4040-ENGL L77b 9 1012311 OULL755 5TY 9 Permissible Permissi ble code kN radial loads Diameter static loads dynamic Radial Axial 1 25 O00 cycles CS Ca kN 06 41,5 5,1 16,6 08 63 9,5 25,2 10 105,l 18,6 42,2 Page 6 prEN 4040 : 1996 Starting torque
16、 N.m Code L Code N 0,Ol to 0,2 0,12 to 0,80 0,02 to 0,4 4.5 Loads and starting torque values Number of this standard 5 Designation EXAMPLE : Description block I Identity block Code for type (see figures 1 and 2) Diameter code (see table 1) Surface treatment code (see 4.4) Starting torque code (see 4.5) NOTE: If necessary, the originator code 19005 shall be placed between the description block and the identity block. 6 Marking EN 2424, style A Marking position and method are at manufacturers option. 7 Technical specification EN 2755
