1、A.E.C. M.A. STANDARD NORME A.E.C.M.A. A.E.C.M.A. NORM prEN 3425 Issue P 1 September 1991 DITE PAR LASSOCIATION EUROPEENNE 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 Aeros
2、pace series Groove dimensions for axial mounting internal type retaining rings Srie arospatiale Dimensions des gorges pour anneaux darrt, type intrieur, montage axial Luft- und Raumfahrt Nuten fr axial in Bohrungen montierbare Sicherungsringe Mae This .Aerospace Series pre-standard has been drawn up
3、 under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). t is published on green paper for the needs of AECMA-Members. It has been technically approvedby the experts of the concerned Commission following comment by the Member countries. Subsequent to the pu
4、blication 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 the
5、OfficiaServices of the Member countries it willbe submittedas 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 - 92138 ISSY-LES-MOULINEAUX CEOEX Edition approved
6、 for publication I Comments should be sent within six months I 1991 -09-27 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 0 aecma 1991 AECMA PREN83425 93 LOI12333 0007395 T prEN 3425 Page 3
7、 1 This standard defines the dimensions of grooves for axial mounting, internal type, retaining rings. Scope and field of application 2 Required characteristics 2.1 Configuration - Dimensions See figure 1 and table. Previous page is blank prEN 3425 Page 4 I M 2 H11 H13 2.65 - 3.15 4.15 . iclurers Fi
8、gure 1 Table millimetres NR min. rnax. 4.5 0.25 - 5,3 0.3 6 0,4 7.5 option. H12 050 062 063 0,12 4.5 ml 1 2.65 1 1 0.25 075 75 78 077 77 80 Dimensions 078 86.5 085 88.5 087 O88 090 93,5 H12 092 92 095 95 097 87 108 108 110 . 150 150 155 H13 158 163 1-1 170 I II The tolerance is left to the man LSquare and sharp edge on the bearing side. 21 1 H11 when the axial load is to both directions ; - H13 when the axiallosd is to one direction only. AECMA PREN*3425 91 1012311 0007197 3 prEN 3425 Page 5 I 3 Designation Example : Diameter code (see table) I
