1、A. E. C. M. A. STAN DAR D NORME A.E.C.M.A. A.E.C.M.A. NORM prEN 3384 Issue P 1 September 1991 DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cdex -Tl. (1 ) 47.36.98.76 UDC : Key words ENGLISH VERSION A
2、erospace series Rings retaining, external, axial mounting, steel, phosphated Srie arospatiale Anneaux darrt, montage axial, type extrieur, en acier, phosphats Luft- und Raumfahrt Sicherungsringe, axial auf Wellen montierbar, aus Stahl, phocphatiert This (Aerospace Series pre-standard has been drawn
3、up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Commission following comment by the Member countries. Subsequent to th
4、e publication of this pre-standard, 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 signature of the AECMA Standard Checking Centre (NPS) and formal agreement of
5、the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for final 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 Edition
6、 approved for publication Comments should be sent within six months C3 Chairman after the date of publication decision 1991-09-27 A.E.C.M.A. Mr. ARENA Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cdex - FRANCE aecrna 1991 AECMA PREN833B4 73 = 10L233L O007364 T = prEN 3384
7、1 This standard defines the characteristics of axial mounting external retaining rings, in steel, phosphated, for aerospace applications. Scope and field of application The phosphating restricts the use at temperatures not exceeding 200 OC. 2 References EN 2424, Aerospace series - Identification mar
8、king of standard fasteners EN 2793, Aerospace series - Phosphating of ferrous alloys 2, EN 3380, Aerospace series - Retaining rings - Technical specification 3, EN 3426, Aerospace series - Groove dimensions for axial mounting external type retaining rings 3) 3 Required characteristics 3.1 Configurat
9、ion - Dimensions - Masses See figure 1 and table. 3.2 Materials Spring steel : - 480-530 HV (Diameter codes 008 to 038) - 440-51 O HV (Diameter codes 040 to 165) 3.3 Surface treatment EN 2793, class A Before storing, the ring shall be protected by grease or oil. 1) Published as AECMA standard at the
10、 date of publication of the present standard 2) In preparation at the date of publication of the present standard 3) Published as AECMA pre-standard at the date of publication of the present standard I Page 3 I Previous page is blank AECMA -P REN*3384 91 W 10L23LL 00071b5 I- prEN 3384 Page 4 Free 1,
11、6 Value in micrometres, apply vprior to phosphating e- S R i P ITable L I 4-1 Section 2-2 Alternative configuration for sizes 40 mm to 165 mm At mounting Installed X Diameter codes 003 to O09 Diameter codes 010 to 165 Note : Details of form not stated are left to the manufacturers option. Figure 1 A
12、ECMA PRENM3384 93 3032333 0007366 3 prEN 33 84 Page 5 Table ) Diameter D1 D2 D3 D4 A max- B 3) code 2, E nom. Tol. max. max. min. 003 1,9 0,s 2,7 7,2 6.6 0.8 + Oio6 - 0.12 3ns in millimetres Mase 4, ieces 0,017 “I“-8-I 0.084 0,340 2) See page 6. 3) See page 6. I 14) See page 6. I AECMA PRENu3384 91
13、1012311 O007167 5 prEN 3384 Page 6 Table (concluded) Diameter A B 3) Dl D2 D3 D4 code 2) TOI. max. max. min. max. 0,46 0,92 - + 0,54 - 1,oa 120 I 11 I 10,2 Ill3 140 I 145 12,2 11,5 138 147 12,3 11,6 140 148 12.4 ii,7 141 i50 13 illa 142 152 13 11,9 143 + 0,63 - 1,26 1 ) Values apply after phosphatin
14、g. 3 3,5 4 P 0,25 xis in millimetres kg/l 090 I pieces I 26.200 0,25 127.300 3 1,200 50,200 0,4 85,500 103,000 107,000 I- 115,000 128,000 I 160,000 2 Corresponds to the nominal diameter (expressed in millimetres) f the shaft on which the ring shall be mounted (see EN 3426). 3) Shall not exceed “A“ m
15、ax. 4) Approximative values, calculated on the basis of 7,85 kg/dm3, given for information purpose only AECMA PREN*3384 93 L03233L 0007368 7 prEN 3384 Page 7 4 Designation Example : Description block Identity block RETAINING RING, EXTERNAL, AXIAL MOUNTING EN 3384-01 6 Number of this standard Diameter code (see table) Note : If necessary, the originator code 19005 shall be placed between the description block and the identity block. 5 Marking EN 2424, Style “G“ 6 Technical specification EN 3380 7 Mounting EN 3426
