1、AECMA PEN%4357 96 m 10323Lai 0030663 BT2 m Edition approved for publication AECMA STANDARD NORME AECMA AECMA NORM CI Chairman Comments should be sent within six months after the date of publication to prEN 4157 Edition P 1 March 1996 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AEC
2、MA) Gulledelle 94 - B-1200 BRUXELLES - Tel. (32) 2 775 81 10 - Fax: (32) 2 775 81 11 ICs : Descriptors : ENGLISH VERSION Aerospace series Rod ends, with self-aligning double row ball bearings and threaded shank in steel Dimensions and loads Inch series Srie arospatiale Luft- und Raumfahrt Embouts ro
3、tule sur deux ranges de billes et 31 tige filete en acier Dimensions et charges Osenkpfe mit zweireihigem Pendelkugellager und Gewindeschaft aus Stahl Mae und Belastungen Srie en inches Zoll Reihe This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (The European A
4、ssociation 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
5、 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 Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be
6、 submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. 1996-03-29 AECMA Gulledelle 94 B-I 200 BRUXELLES Mr Oestreicher I aecma 1996 AECMA PRENSqL57 b = 1032333 00306b5 b75 Page 3 prEN 41 57 : 1996 1 Scope This standard specifies the characteristics o
7、f adjustable rod ends with self aligning double row ball bearing and threaded shank in steel. They consist of : - a rod end comprising : - either seals or shields; - an optional longitudinal groove for locking purpose; - an inner ring with balls. These rod ends are intended for use with flight contr
8、ol rods or rods for aerospace structures. They are intended to be used in the temperature range: - 54 OC to + 150 OC. However, being lubricated with the following greases : - very high pressure grease, ester type (code A), operational range - 73 OC to + 121 OC or - very high pressure grease, synthet
9、ic hydrocarbons, general purpose (code B), operational range - 54 OC to + 177 OC (see EN 20671, their field of application when lubricated with code A grease is limited to + 121 OC. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publica
10、tions. These normative references 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.
11、 For undated references the latest edition of the publication referred to applies. IS0 1132 IS0 3161 IS0 3353 EN 2031 EN 2067 EN 2099 EN 2133 EN 2135 EN 2424 Rolling bearings - Tolerances - Definitions UNJ thread, with controlled root radius, for aerospace - Inch series Aerospace - Rolled threads fo
12、r bolts - Lead and runout requirements Steel FE-PL31 - Hardened and tempered - Bars - Aerospace series 1) Aerospace series - Rod-ends with self-aligning ball bearings - Technical specification Steel FE-PL71 - Carburized, hardened and tempered - Bar De 2 100 mm - Aerospace series 2) Aerospace series
13、- Cadmium plating of steels with maximum specified tensile strength equal to or less than 1450 Mpa, copper, copper alloys and nickel alloys 1) Aerospace series - Steel FE-PL61 - Carburized, hardened and tempered - Bar De I40 mm 3) Aerospace series - Marking of aerospace products 3 Symbols The defini
14、tions of tolerances and clearances are given in IS0 1 132. deviation of a single bore diameter single plane mean bore diameter deviation angular displacement permissible between inner and outer ring axis of a set of aligning bearing permissible static radial load permissible static axial load 1 ) Pu
15、blished as AECMA Standard at the date of publication of this standard 2) In preparation at the date of publication of this standard 3) Published as AECMA Prestandard at the date of publication of this standard AECMA PREN*4157 96 m 1012311 OOLObbb 501 Page 4 prEN 4157 : 1996 4 Required characteristic
16、s 4.1 Configuration : see figure 1. Values Dimensions - Tolerances - Masses : see figure 1 and table 1: values after cadmium plating. 4.2 Surface roughness See figure 1, values prior to cadmium plating. Rolling elements and raceways : Ra = 0,2 pm (8 pin). 4.3 Materials Rod end : - by case hardening,
17、 hardening and tempering a surface hardness of 2 58 HRC on the raceway; - by hardening and tempering a strength Rm 2 830 MPa on the whole rod end. Steel EN 2135 or EN 2099; heat treated to obtain : Inner ring : Steel EN 2031 Rolling elements : Steel EN 2031 Seals : Polytetrafluoroethylene (PTFE) or
18、glass reinforced fabric polytetrafluoroethylene (PTFE) Shields : Corrosion resisting material Retaining rings : Corrosion resisting material 4.4 Surface treatment Rod end body : All outer surfaces with the exception of the raceway, cadmium plating and chrornating as per EN 2133, 10 prn to 20 pm (400
19、 pin to 800 pin). Exception : threads, coat thickness 5 pm to 10 pm (200 pin to 400 pin). Page 5 prEN 41 57 : 1996 125 pv 32biv Break sharp edges and corners and remove all burrs and slivers Dimensions in miilimetres/inches LB_ - AL A-A z (3 : 1) Break sharp corner 0,lO r5 max. Y (3 : 1) Design of s
20、ealed or shielded ball bearing Type with seats Type with shields Code E Code P NOTE : The installation of seals and shields is at the manufacturers option. Figure 1 AECHA PREN*4157 i6 = 1012311 0010668 384 dl min. 8,4 0,33 G +0,5 +0,02 1) 27,O 1 ,O6 37,O 1,46 42,O 52,O 1,65 2,05 10,8 0,43 13,8 Or54
21、37,O 1,46 42,O 52,O 59,O 63,O 37,O 42,O 1,65 2,05 2,32 2,48 1,46 1 n65 52,O 2,05 1,89 2,48 48,O 63,O Page 6 prEN 41 57 : 1996 Table 1 Dimensions in millimetres/inches - C I0,12 f 0,005 - B O -0,12 O -0,005 14,OO 0,551 I Diameter d D 10,25 I0,OlC H +0,5 t 0,02 29,3 1,15 K Type of thread UNJF - 3A 2)
22、6,3 50-2 8 O, 2 500-28 Tolerance *dmp O -0,008 O -0,0003 7,938-24 O, 3 7 50-24 11,113-20 22,50 0,886 54,3 I 12,700-20 I 2,14 0,5000-20 10,oo 0,394 15,875-1 8 0,6250-1 8 7,938-24 0,3750-24 1 1,113-20 O .0,013 O .0,0005 15.00 0,591 28,50 1,122 54,3 I 12,700-20 I 2,14 0,5000-20 0,3750-24 91525-24 I 39,
23、3 44,3 54,3 1,55 1,74 2,14 1 1,113-20 12,700-20 0,5000-20 20,oo 0,787 14,OO 0,551 32,OO 1,260 - 15,875-1 8 - AECG1.A PREM*415 96 1012311 0010667 210 Page 7 prEN 4157 : 1996 Table 1 (concluded) Dimensions in millimetres/inches - xO3) min. L f 0,25 *0,010 r3 t 0.25 k0,OlO 80 nax. Type Mass glpiece Ibl
24、piece - Y r2 0,3 +0,01 7,O 0,28 Code o1 02 03 -0,13 -0,005 I 5,11 54,OO 2,126 6,O 0,24 0,260 0,311 0,3 O, 5 to 3.01 to 3.02 - O, 3 to 0,8 0,Ol to 0.03 5,O 0,20 46 1 o1 32 60,OO 2.362 0203963 1 03:-o 11 ,O7 0,436 56 I 123 7,O 0,28 6,O 0,24 04 05 77,50 3,051 06 85,OO 3,346 12.14 0,541 80,OO 3,150 7,O
25、0,28 5,O 0,20 07 10 0,13 to 0,38 3,005 to 3,015 21 6 132 64 141 60,OO 2,362 6,48 0,255 11 7,90 I 0,311 8 - +- 190 62.00 2,441 74,OO 2,913 12 13 11 ,O7 0,436 I 12.14 103 I 227 80.00 3,150 83,OO 3,268 14 15 0,125 318 Y-= 1 3,74 7,O 0,28 30 - 35 114 251 94 207 1. I 0,541 20 62,OO 2,441 7,90 I 0,311 67.
26、00 2,638 t 270 21 22 75.00 2,953 5,O 0,20 11 ,O7 0,436 12,14 3,18 0,478 0,125 13,74 t 0,541 73,OO 2,874 85,OO 3,346 23 24 144 1) G = minimum length of useful threads 2) Thread rolled as per IS0 31 61. 3) Maximum value for the user Radial load c, 2) N Ifb Axial load Fa max. 2) N Ifb With seals With s
27、hields 10780 2423 3369 1053 10,o 0,89 5,0 0,44 12750 2866 3984 1245 12,o 1 ,O6 7,0 0,62 Diameter code Test torque min. Page 8 prEN 4157 : 1996 4.5 See table 2. Loads, starting torques and clearances Table 2 Dimensions in millimetres/inches Clearance 1) Pm pin Permissible static loads Diameter code R
28、adial Axial max. Code R Code N o1 02 03 04 05 06 07 2 to 10 79 to 3 94 1 to 5 39 to 197 10 11 80 31 50 12 13 14 15 20 21 22 23 24 1) Defir 2) Defir li li ,tion and testing as per EN 2067. ition and testing for ultimate static loads as per EN 2067, annex E. 4.6 Retention of seals or shields Definitio
29、n and testing as per EN 2067, annex A. Table 3 I O1 to 24 I 5,O Nm 44 in.lbs AECMA PRENx4157 96 = 1012311 0010671 979 Code Number letter of this for thread standard (see below) I- Diameter code (see table 1) Page 9 prEN 4157 : 1996 5 Designation EXAMPLE: Description block ROD END Identity block EN 4
30、1 57L05EKlAN Code letter for radial clearance (see table 2) Code letter for thread: L = left hand thread R = right hand thread Code for longitudinal groove type: K 1 = longitudinal groove as per type 1 K 2 = longitudinal groove as per type 2 NOTE: If necessary, the originator code I9005 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 2067
