1、 STD-AECMA PREN iL78-ENGL 1778 = LOL23LL Il034808 330 AECMA STANDARD prEN 4198 NORME AECMA Edition P 1 AECMA NORM June 1998 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: 49.035 Descriptors
2、: ENGLISH VERSION Aerospace series Rod-ends, adjustable self-aligning plain bearing with self-lubricating liner and threaded shank in corrosion resisting steel Dimensions and loads Srie arospatiale Luft- und Raumfahrt Embouts rglables rotule, garniture autolubrifiante, tige filete, en acier rsistant
3、 la corrosion Dimensions et charges senkopf, einstellbar mit Gelenklager mit selbstschmierender Beschichtung und Gewindeschaft aus korrosionsbestndigem Stahl Mae und Belastungen This “Aerospace Series I Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aero
4、space 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 not be chan
5、ged 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 as a dra
6、ft 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 - 921 38 ISSY-LES-MOULINEAUX CEDEX Comments should be sent within six months after the date of publication to I Edit
7、ion approved for publication 1998-06-30 AECMA Gulledelle 94 B-1200 BRUXELLES CI Chairman Mr streicher 0 aecma 1998 1 Scope and field of application This standard specifies the characteristics of adjustable rod-ends consisting of: - a self-aligning ball bearing with self-lubricating liner, EN 2501. -
8、 a rod-end with threaded shank consisting of: - a circumferential groove to identity location, - an optional longitudinal groove for locking purposes. These rod-ends are intended for use with flying control rods or rods for aerospace structures. They shall be used within the temperature range from:
9、-55 “C to +163 OC. 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 the text and the publications are listed hereafter. For dated references, subsequent ame
10、ndments 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 to applies. IS0 11 32 Bearings - Tolerances - Definitions IS0 3353 Aerospace construction
11、 - Rolled threads - Runout and lead threads IS0 5855-2 Aerospace - MJ threads - Part 2: Dimensions limits for nuts and bolts IS0 8075 Aerospace - Surface treatment of hardenable stainless steel EN 2068 Aerospace series - Rod-ends with self-lubricating, self aligning bearings - Technical specificatio
12、n) EN 2424 Aerospace series - Identification marking of standard fasteners ! EN 2501 Aerospace series - Bearings, spherical plain in corrosion resisting steel with self-lubricating liners reduced starting torque with wide inner ring - Dimensions and loads EN 2539 Steel FE-PM61 - Solution annealed an
13、d precipitation hardened R - 900 MPa - Bars D, 5 120 mm EN 2755 Aerospace series - Bearings spherical plain in corrosion resisting steel with self-aligning liners - Elevated loads at ambient temperature - Technical specification 3 Symbols A, A, : Single plane mean bore diameter deviation3) a : Devia
14、tion of a single bore diameter3) : Maximum angle of tilt of the outer ring with respect to the inner ring, with the spherical raceway of the outer : Permissible dynamic radial load by 25 O00 cycles (for definitions: EN 2755) ring being completely in contact with the inner ring C, ) Published as AECM
15、A Prestandard at the date of publication of the present standard. *) Published as AECMA Standard at the date of publication of this standard ) In conformity with IS0 11 32. H2LK (F/3.F/F/C) Previous page is blank STD-AECMA PREN 9LS-ENGL 1778 LOL23LL 0014810 T77 Page 4 prEN 4198 4 Required characteri
16、stics 4.1 Dimensions - Masses Configuration: according to figure 1. The dimensions and the tolerances shall conform with the values indicated in the figure 1 and tables 1 and 2; values ater passivating. 4.2 Surface roughness According to figure 1. Values in micrometers, apply prior to surface treatm
17、ent. 4.3 Loads and rotational starting torques According to table 2. 4.4 Materials Rod-end body: steel according to EN 2539 - 35 I HRC I 42 Plain bearing : according to EN 2501. 4.5 Surface treatment According to IS0 8075: code T No surface treatment: without code HPLK ( F/3. WFIC) STD-AECMA PREN iL
18、SB-ENGL 1798 m LG123LL UUL48LL 725 m Page 5 prEN 4198 S0D r - I r A J-: i h Y X c - 1) In conformity with IS0 3353 2) 0 of base of groove: 0 ci, min (according to IS0 5855-2) 3) Thread, pitch diameter NOTE: The circumferential indication groove and the longitudinal groove over the distance i, shall
19、be painted red. Figure 1 H2LK ( F13. F/F/C) Page 6 prEN 4198 c 0- o r Or r $C - o- c 2 ? oc .l C E Y N I I c - 4 + 3 C O CJ) al f -o C (u al f v) - E .- t Y o O O v) v) al C Y o - - .- 5 v) al U 3 o C - .- Page 7 prEN 4198 Axial push out load kN kN Nem Starting torque Permissible dynamic radial load
20、) c2, Table 2 Ultimate static load3) kN 16,6 25,2 38,6) 4s 0,45 to 1,3 27 39 0,7 to 2,O 685 103 58 ) In direction of the axis of the rod-end fitting. ) This load is a maximum of 23 ultimate static load the rod-end and not the load from EN 2501. ) Ultimate loads are listed because failure will occur
21、in the rod-end, not the 3 bearing. Users shall apply their own factors to obtain the permissible static load. Left hand thread Right hand thead Without longitudinal groove With longitudinal groove 5 Designation EXAMPLE: L R G K Number of E Description block Identity block RO D-E N D i standard Code
22、for thread direction (see table 3) Code for d, (see table 1) Code for longitudinal groove (see table 3) Code for surface treatment (see 4.5) Table 3. NOTE: If necessary the code I9005 shall be introduced between the description block and identity block. 6 Marking According to EN 2424, category A The position and method of marking are at the manufacturers discretion. 7 Technical specification According to EN 2068 H2LK (F/3.F/F/C)
