1、EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2791 UDC : 629.7.02 : 621.827.1 : 621.85.053.004.1 Key words : Aircraft industry, flight control, rod ends, threaded shanks, dimensions, static loads English version Aerospace series Rod ends, adjustable, single fork and threaded shank with engage
2、ment : 1,5 x thread $I Dimensions and loads Srie arospatiale Luft- und Raumfahrt Einstellbare Gabelkpfe einfach, mit Gewindeschaft mit Einschraubtiefe von 1,5 x Gewinde- Mae und Belastungen Embouts rglables chape simple et tige filete implantation : 1,5 x filetage Dimensions et charges This European
3、 Standardwasaccepted by CEN on 1 990-1 2-06. CEN membersare bound to comply with the requirements of CEN Internal Regulations which stipulate the conditionsfor giving this European Standard the statusof a national standard without any alteration. Up-to-date lists and bibliographical references conce
4、rning such national standards may be obtained on application to the CEN Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). Aversion in anyother.language made by translation under the responsibility of a CEN member into its ow
5、n language and notified to CEN Central Secretariat has the same status as the official versions. CEN members are the national standards organizations of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain,Sweden, Switz
6、erland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Centra! Secretariat : Rue de Stassart, 36, B-1050 Bruxelles 0 CEN 1991 Copyright reserved to all CEN members ,- Ref. Nr EN 2791 : 1991 E - I CEN EN*Z791 93 M 3404589 O0
7、33267 T 3 Page 2 EN 2791:1991 Fomrd This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out in accordance with the rules of this Association, this Standard has successively received the approval of the National As
8、sociations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. According to the Common CEN/CENELEC Rules, the following countries are bound to implement this European Standard : Austria, Belgiun, Damirk, Finland, Gerniany, Greece, Iceland, Ireland, Italy, Lu
9、xeWrg+ Netherlands, Norway, Fbrtqp, Spain, Wm, skitzerlmd and united Kingdan. CEN EN*2791r 91 I 3404589 0033268 3 Page 3 EN 2791:1991 -. 1 Scope and field of application This standard specifies the characteristics of adjustable rod-ends consisting of : - a single fork ; - a threaded shank comprising
10、 : . a circumferential groove to identify engagement ; . an optional longitudinal groove for locking purposes. These rod ends are intended for use with flight control rods or rods for aircraft structures. The cadmium plating restricts the application to a temperature not exceeding 235 OC. 2 Referenc
11、es IS0 3353 IS0 585512 EN 2133 EN 2137 EN 2438 EN 2515 EN 2601 Aerospace construction - Rolled threads - Run-out and lead threads Aerospace - MJ Threads - Part 2 : Limit dimensions for bolts and nuts Cadmium plating of steels with maximum specified tensile strength equal to or less than 1450 MPa and
12、 copper and copper alloys - Aerospace series 1) Steel FE-PL75- 1 100MPai E Lo -. I- O0 I d c a 00- I c z 00 + i a E O CI1 e U c m * z .- s r VI m 3 o O O - 1 -. UJ c L“. e N O N f- c3 c L“ c N .- I 0- $I v) 0- d N O m d m w O m D m e d -. + rn O0 2 2 c - N - O N N. m 00 + c 4 0-0 + Co - Lo O - O c -
13、 O .- a9 U O o CEN EN*2793 93 m 3404589 0033273 3 m Page 6 EN 2791:1991 4 Designation Each rod end shall only be designated as in the following example : Description block ROD END Identity block EN2791 L08K Number of EN standard (see table) Code for left hand thread (see below) Code ford (see table)
14、 Code for longitudinal groove (see below) Where the following codes are applied : L = left-handthread R = right-hand thread K = with groove T = without groove NOTE 1 : In the pre-standard the identity block was EN2791 08L. NOTE 2 : If necessary, the originators code 19005 may be introduced between the description block and the identity block. 5 Marking In addition to the manufacturers own marking, each rod end (see figure) and its packaging shall be marked, using the identity block specified in clause 4. 6 Technical specification See EN 2601.
