1、BRITISH STANDARD AEROSPACE SERIES BS EN 2791:1991 Rod ends, adjustable, single fork and threaded shank with engagement: 1.5 thread diameter Dimensions and loads This European Standard EN2791:1991 has the status of a BritishStandardBSEN 2791:1991 This BritishStandard was published under the authority
2、 ofthe Standards Board and comesinto effect on 30August1991 BSI12-1999 The following BSI references relate to the work on this standard: Committee reference ACE/14 Draft for comment88/76837 DC ISBN 0 580 19887 1 Cooperating organizations The European Committee for Standardization, under whose superv
3、ision this European Standard was prepared, comprises the national standards organizations of the following Western European countries. Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisation Denmark Dansk Standardiseringsraad Finland Suomen Standardisoimisliito, r.y. Franc
4、e Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National Standards Authority of Ireland Italy Ente Nazionale Italiano di Unificazione Luxemburg Inspection du Travail
5、 et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certificacin Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingd
6、om BritishStandards Institution Amendments issued since publication Amd. No. Date CommentsBSEN 2791:1991 BSI 12-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text of EN2791 3 National appendix NA Inside back cover National appendix NB Inside back c
7、overBSEN 2791:1991 ii BSI 12-1999 National foreword This BritishStandard has been prepared under the direction of the Aerospace Standards Policy Committee and is the English language version of EN2791 “Aerospace series Rod ends, adjustable, single fork and threaded shank with engagement:1.5 thread d
8、iameter Dimensions and loads” published by the European Committee for Standardization (CEN). EN2791 was produced as a result of international discussions in which the United Kingdom took an active part. A British Standard does not purport to include all the necessary provisions of a contract. Users
9、of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, the EN title page, pages2 to6, an inside back
10、 cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN2791 UDC629.7.02:621.827.1:621.85.053.004.1 Key words: Ai
11、rcraft industry, flight control, rod ends, threaded shanks, dimensions, static loads English version Aerospace series Rod ends, adjustable, single fork and threaded shank withengagement:1,5 thread Dimensions and loads Srie arospatiale Embouts rglables chape simple et tige filete implantation:1,5 fil
12、etage Dimensions et charges Luft- und Raumfahrt Einstellbare Gabelkpfe einfach, mit Gewindeschaft mit Einschraubtiefe von1,5 Gewinde- Mae und Belastungen This European Standard was accepted by CEN on12 June1990. CEN members are bound to comply with the requirements of CEN Internal Regulations which
13、stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Central Secretariat or to any CEN member. This European St
14、andard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to CEN Central Secretariat has the same status as the official versions. CEN members are the national st
15、andards organizations of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Nor
16、mung Central Secretariat: rue de Stassart 36, B-1050 Brussels CEN1991 Copyright reserved to all CEN members Ref. No. EN2791:1991 EEN 2791:1991 BSI 12-1999 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes car
17、ried out in accordance with the rules of this Association, this Standard has successively received the approval of the National Associations 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 countrie
18、s are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Contents Page Foreword 2 1 Scope and field of application 3 2 References 3
19、3 Required characteristics 3 4 Designation 6 5 Marking 6 6 Technical specification 6 Figure 4 Table 5EN 2791:1991 BSI 12-1999 3 1 Scope and field of application This standard specifies the characteristics of adjustable rod-ends consisting of: a single fork; a threaded shank comprising: a circumferen
20、tial 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 exceeding235 C. 2 References ISO3353, Aerospace c
21、onstruction Rolled threads Run-out and lead threads. ISO5855-2, Aerospace MJ Threads Part2: Limit dimensions for bolts and nuts. EN2133, Cadmium plating of steels with maximum specified tensile strength equal to or less than1450MPa and copper and copper alloys Aerospace series 1) . EN2137, Steel FE-
22、PL75 1100MPau R m u1250MPa Bars D e u 100mm Aerospace series 1) . EN2438, Steel FE-PL62 900MPau R m u 1100MPa Bars D e u 40mm Aerospace series 1) . EN2515, Aerospace series Rod ends, adjustable, single fork and threaded shank Dimensions and loads. EN2601, Aerospace series Fork ends Technical specifi
23、cation 2) . 3 Required characteristics 3.1 Dimensions Tolerances Mass Configuration: see Figure. Dimensions, tolerances and mass: see Figure and Table, values after cadmium plating. 3.2 Surface roughness See Figure, values before cadmium plating. 3.3 Material Steel EN2137 or EN2438. 3.4 Surface trea
24、tment Cadmium plating EN2133, except on the bore d,7m to20m, except thread5m to10m. 1) Published as AECMA standard at the date of publication of the present standard. 2) In preparation at the date of publication of the present standard.EN 2791:1991 4 BSI 12-1999 NOTEThe circumferential groove and th
25、e longitudinal groove over distance F shall be painted red. Figure EN 2791:1991 BSI 12-1999 5 Table Dimensions in millimetres Fork Shank Rod end Reference to be used for the designation d A B D E G 0,25 H 0,1 J K 0,25 M 0,25 Thread a designation F b min. L N P R S T V max. Ultimate load kN Mass g Co
26、de Nominal diameter J7 06 6 14 20,2 12,2 30 24 0,5 2 13 19,2 MJ10 1,254h6h 23 39 2,4 8,0 0,8 33 40 54 EN2791 08 8 15 22,2 13,9 36 30 0,8 2 15 21,5 MJ12 1,254h6h 27 44 2,4 10,2 0,8 38 58 81 10 10 20 28,2 17,8 41 34 0,8 3 17 27,0 MJ14 1,54h6h 31 50 3,2 12,2 1,0 40 4 44 83 132 EN2515 c a According to I
27、SO5855-2; manufacturing method: rolled b F is also the minimum length of engaged thread; it includes thickness of lock washers and height of nut. c The reference EN2791 has been used in the pre-standard. +0,1 0 +0,2 0 +0,2 0 +1 0 +1 0 +0,1 0 0 0,1 0 1 0 0,25EN 2791:1991 6 BSI 12-1999 4 Designation E
28、ach rod end shall only be designated as in the following example: Where the following codes are applied: NOTE 1In the pre-standard the identity block was EN279108L. NOTE 2If necessary, the originators code19005 may be introduced between the description block and the identity block. 5 Marking In addi
29、tion to the manufacturers own marking, each rod end (see Figure) and its packaging shall be marked, using the identity block specified in clause4. 6 Technical specification See EN2601. L =left-hand thread R =right-hand thread K =with groove T =without grooveBSEN 2791:1991 BSI 12-1999 National append
30、ix NA The United Kingdom participation in the preparation of this European Standard was entrusted by the Aerospace Standards Policy Committee (ACE/-) to Technical Committee ACE/14 upon which the following bodies were represented: British Independent Steel Producers Association Civil Aviation Authori
31、ty (Airworthiness Division) Federation of Wire Rope Manufacturers of Great Britain Institute of Petroleum Ministry of Defence Society of British Aerospace Companies Limited Stainless Steel Wire Industry Association National appendix NB The BritishStandard corresponding to the European Standard refer
32、red to in the text is identical in number and title with that given in clause2. The BritishStandard corresponding to the International Standard referred to in the text is as follows. International Standard BritishStandard ISO3353:1976 BS A231:1982 Specification for runout and lead threads for rolled
33、 threads (Identical)BS EN 2791:1991 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Char
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