1、AECMA PREN*3383 73 3032333 0007357 2 A. E. C. M .A. STAN DARD NORME A.E.C.M.A. A.E.C.M.A. NORM prEN 3383 Issue P 1 September 1991 EDIT PAR LASSOCIATLON EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cdex -Tl. (1) 47.36.98.
2、76 UDC : Key words ENGLISH VERSION Aerospace series Rings retaining, internal, axial mounting, steel, vacuum cadmium plated Srie arospatiale Anneaux darrt, montage axial, type intrieur, en acier, cadmis sous vide Luft- und Raumfahrt Sicherungsringe, axial in Bohrungen montierbar, aus Stahl, vakuumve
3、rkadmet This Aerospace Series pre-standard has been drawn 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 approvedby the experts of the concerned Commission fo
4、llowing comment by the Member countries. Subsequent to the publication of this pre-standard, the technical content shallnot 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
5、 Standard Checking Centre (NPS) and formal agreement of 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-Jac
6、ques Rousseau - 92138 ISSY-LES-MOULINEAUX CEDEX Edition approved for publication 1991 -09-27 Comments should be sent within six months after the date of publication decision A.E.C.M.A. Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cdex - FRANCE C3 Chairman Mr. ARENA aecma 1
7、991 prEN 3383 Page 3 1 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 3) Published as AECMA pre-standard at the date of publication of the present standard . 1 Scope and field of application This s
8、tandard defines the characteristics of axial mounting internal retaining rings, in steel, vacuum cadmium plated, for aerospace applications. The cadmium plating restricts the use at temperatures not exceeding 235 OC. 2 References EN 2424, Aerospace series - Identification marking of standard fastene
9、rs EN 2535, Aerospace series - Vacuum cadmium plating of steels 2, EN 3380, Aerospace series - Retaining rings - Technical specification 3, EN 3425, Aerospace series - Groove dimensions for axial mounting internal type retaining rings 3) 3 Required Characteristics 3.1 Configuration - Dimensions - Ma
10、sses 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 2535, 5 pm to 9 pm, on all surfaces which can be contacted by a 20 mm ball. On all other surfaces, a continuous deposit shall be prese
11、nt, but no value is specified. prEN 3383 Page 4 Free AECMA PRENx3383 93 W LOL23LL 0007359 b = 1 6 Apply prior to phosphating I- l Section Z-Z At mounting X Diameter codes -. 03 I _- Installed Diameter codes 008 to 048 025 to 165 A -4 L-D4 A-!JLD 4 Note : Detail of form not stated are left to the man
12、ufacturers option. Figure 1 AECMA PREN83383 L W LOL231L 00071b0 2 W prEN 3383 Page 5 Table 21 See paie 6. 31 See page 6. $1 See page 6. AECMA PRENa33B3 93 1032333 0007363 4 m 160 162 165 prEN 3383 Page 6 13 11,6 169 13 11,7 171,5 13 11,8 174,5 Table (concluded) Dimensions in millimetres Diameter A B
13、 3) D1 D2 D3 D4 P code 2, max* =2: nom. I TOI. max. max. min. + 1,08 - 0,54 112 I 10,5 I 9,l I 119 I 10,7 120 122 il; 1 10 1 132 1 ll2pr1 10,l 134 104 109 128 10,2 135 105 110 130 10,2 137 107 112 132 11 10,3 139 109 114 + 1,26 - 0,63 152 I 12 I 11,3 I 161 155 I 12 I 11,4 I 164 157 I 12 I 11,5 I 166
14、 158 I 12,3 I 11,5 I 167 1) Values apply after cadmium plating. 3,5 - 4 135 - S hl 1 215 3 0,25 4 ieces 20,400 22,000 35,000 I 56,000 58,500 60,000 64,500 72,000 74,500 75,000 75,500 77,000 78,000 79,000 80,500 8 1,000 82,000 83,000 84,000 85,500 86,000 93,000 96,000 100,000 105,000 106,000 107,000
15、108,000 109,000 1 10,000 11 8,000 125,000 2) Corresponds to the nominal diameter (expressed in millimetres) of the bore in which the ring shall be mounted (see EN 3425). 3) Shall not exceed “A“ max. 4) Approximative values, calculated on the basis of 7,85 kg/dm3 , given for information prupose only
16、4 Designation Example : Description block Identity block Number of this standard 1 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 3425
