1、- AECMA STANDARD NORME AECMA AECMA NORM prEN 4538-1 Edition P I November 2001 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES - STANDARDIZATION (AECMA-STAN) Gulledelle 94 - 8-1200 BRUXELLES - Tel. (+32) 2 775 8110 - Fax. (+32) 2 775 81 11 ICs: 49.035 Descriptors: ENGLISH VERSION Aerosp
2、ace series Bearings, spherical plain, in corrosion resisting steel with self-lubricating liner Elevated load under low oscillations Narrow series Dimensions and loads Metric series Srie arospatiale Rotules, en acier rsistant la corrosion garniture autolubrifiante charge leve sous faibles oscillation
3、s Srie troite Dimensions et charges Srie mtrique Luft- und Raumfahrt Gelen klager, aus korrosionsbestndigem Stahl mit selbstschmierender Beschichtung Hohe Belastung ohne Montagenut Schmale Reihe Mae und Belastungen Metrische Reihe This Herospace Series” Prestandard has been drawn up under the respon
4、sibility 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 the concerned Domain following member comments. Subsequent to the publicati
5、on 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 and formal agreement of AECMA-STAN it will be submitted as a draft Europea
6、n 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 Edition approved for publication 2001 -1 1-30 Comments should be sent within six months afte
7、r the date of publication to Gulledelle 94 AECMA-STAN 6-1200 BRUXELLES Mechanical Domain Mr Feltham aecma 200 Page 2 prEN 4538-1 : 2001 Blank page Page 3 prEN 4538-1 : 2001 1 Scope This standard specifies the characteristics of spherical plain bearing in corrosion resistant steel, with self-lubricat
8、ing liner, narrow series, elevated load under low oscillations applications. They shall be used in the temperature range - 55 “C to 163 “C. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cite
9、d 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 latest edition
10、 of the publication referred to applies. IS0 1132-1 IS0 8075 EN 2030 EN 2132 EN 2424 EN 3161 EN 4540 Rolling bearings - Tolerances - Part I : Terms and definitions Aerospace - Surface treatment of hardenable stainless steel parts Steel FE-PM43 - Hardened and tempered - Bars D 5 150 mm - Aerospace se
11、ries 1) Electrodeposition of chromium for engineering purposes - Aerospace series 1) Aerospace series - Marking of aerospace products Aerospace series - Steel FE-PM3801 (X5CrNiCu17-4) - Air melted - Solution treated and precipitation treated - Bar - a or D I200 mm - Rm 2 930 MPa 2) Aerospace series
12、- Bearings, spherical plain, in corrosion resisting steel with self-lubricating liner - Elevated load under low oscillations -Technical specification 2) 3 Symbols and definitions The tolerance definitions are given in IS0 11 32-1 single plane mean bore diameter deviation deviation of a single bore d
13、iameter single plane mean outside diameter deviation deviation 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 the inner ring. Required characteristics Configuration, dimensions, tol
14、erances and masses See figures 1 and 2 and table 1. The dimensions are expressed in millimeters and apply after surface treatment, 4.2 Surface roughness See figures 1 and 2. The values are expressed in micrometers and apply before surface treatment. 1) Published as AECMA Standard at the date of publ
15、ication of this standard 2) Published as AECMA Prestandard at the date of publication of this standard Page 4 prEN 4538-1 : 2001 W Figure 1 : Bearing without swaging groove, code S Figure 2 : Bearing with swaging grooves, code R Page 5 prEN 4538-1: 2001 - dass /piece = - 32 50 59 126 185 300 340 460
16、 630 870 - - - - - - - - - - Table 1 ADS + -15 +8 -19 d I i3 I C I D I Tolerances dia K N P +0,1 o min. = 0 -0,2 15 19,8 22,4 20,5 25,4 26,4 0,9 21,7 27 28,4 27,l 34,9 36,8 29,6 38,8 41,8 355 45,2 47,8 T nax. 3,9 12 1,s -1 22 22 22 18 ab min. 10“ 8“ 1- 7“ 8“ - 6“ 7“ 6“ - 5“ 7“ - - +3 -11 15 I 15 I 1
17、5 12 +3 -13 - +3 -15 - O 29 I hp D Code O -9 - O - 11 Minimum projected Starting torques surface area Permissible Permissible static loads dynamic radial 25 O00 cycles kN loads O - 13 - O - 15 12 15 17 Radial hiai a CS CS kN m m2 N.m 0,12 78,l 11,7 43 162,36 121,9 18 67 254 to 0,8 148,3 24.3 81 3103
18、 -23 a Attention should be paid to the possible indentation of the support mountings by the inner ring bearing faces. Maximum values for the user. 4.3 Loads and starting torques See table 2. Table 2 - e : 0,5 - 30“ The duty cycles are defined in the technical specification EN 4540. Page 6 prEN 4538-
19、1 : 2001 I 4.4 Materials and surface treatments Inner ring: steel EN 2030, hardness 55 HRC to 62 HRC Outer ring: steel EN 3161, hardness 28 HRC to 37 HRC before swaging Liner: self-lubricating low friction wear resistant material consistent with the requirements of EN 4540 4.5 Surface treatment at t
20、he convenience of the bearing manufacturer to fulfil the requirements of the dimensional standard and of the technical specification (see IS0 8075). Surface treatment on the inner ring 5 Designation EXAMPLE: Description block I Identity block BEARING I EN4538-I 12, IT ! Number of this standard Diame
21、ter code (see table 1) Technology code Where the following technology codes are applied: - code A, bonded liner technology; - code B, injected or moulded liner technology; - without code, both technologies can be used at users convenience 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. Bearings ordered without technology code shall be delivered marked in accordance with its technology code. 7 Technical specification EN 4540
