SIST EN 3425:2009

Aerospace series - Groove dimensions for axial mouting internal type retaining rings

This standard defines the dimensions of grooves for axial mounting, internal type, retaining rings.

Luft-und Raumfahrt - Nuten für axial in Bohrungen montierbare Sicherungsringe, Maße

Diese Norm legt die Maße von Nuten für axial in Bohrungen montierbare Sicherungsringe fest.

Série aérospatiale - Dimensions des gorges pour anneaux d'arrêt, type intérieur, à montage axial

Aeronavtika - Mere zarez za notranje varovalne obroče z radialno namestitvijo

General Information

• Status: Published
• Publication Date: 22-Jun-2009
• ICS: 49.030.99 - Other fasteners
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 29-May-2009
• Due Date: 03-Aug-2009
• Completion Date: 23-Jun-2009
• Ref Project: EN 3425:2006 - Aerospace series - Groove dimensions for axial mouting internal type retaining rings

Overview

EN 3425:2006 - part of the CEN / Aerospace series - specifies the groove dimensions for axial mounting, internal-type retaining rings. The standard defines the geometry, dimensional series and tolerancing principles used when designing grooves (bores) that accept axial internal retaining rings in aerospace applications. It was prepared by AECMA-STAN and approved by CEN on 20 April 2006; national adoptions include SIST EN 3425:2009.

Key topics

• Scope: Specifies groove dimensions for axial mounting, internal-type retaining rings used in aerospace assemblies.
• Dimensional data: Table 1 (in the standard) provides code numbers, nominal diameters and corresponding groove parameters (dimensions D1, a, D2, M, b, N, R) in millimetres.
• Tolerances: Tolerance grades (H11, H12, H13) and rules for selection are included - for example, H11 when axial load is in both directions, H13 when load is in one direction only. Some tolerance choices are left to the manufacturer’s option as noted in the standard.
• Configuration and features: Includes required groove configuration and a figure showing critical details (e.g., square/sharp edge on the bearing side).
• Designation: Simple designation format - for example: EN3425-022 (standard number + diameter code).
• Regulatory notes: Foreword notes possible patent rights and national implementation requirements across CEN member bodies.

Applications

• Design and manufacturing of aerospace components that use internal axial retaining rings to secure bearings, sleeves, spacers or assemblies inside bores.
• Mechanical and fastener engineers specifying groove geometry to ensure proper ring fit, reliable axial retention and interchangeability across suppliers.
• Quality, inspection and procurement teams verifying conformance to standard groove dimensions and tolerances during acceptance and maintenance.
• Applicable wherever controlled axial retention and standardized groove geometry are required to meet aerospace safety and interchangeability expectations.

Who uses this standard

• Aerospace component designers and mechanical engineers
• Fastener and retaining ring manufacturers
• Quality assurance and drawing/specification authors in aerospace and related high-reliability industries
• Maintenance and repair organizations that replace or inspect retaining rings and mating grooves

Related standards and references

• EN 3425:2006 is part of the aerospace series and referenced under ICS 49.030.99 (other fasteners). National adoptions (e.g., SIST EN 3425:2009) implement the same dimensional requirements. For system-level design, combine this standard with relevant bearings, shaft and assembly standards and supplier product specifications.

Keywords: EN 3425:2006, groove dimensions, axial mounting internal retaining rings, aerospace standard, retaining ring grooves, CEN, AECMA-STAN.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.QDPHVWLWYLMRLuft-und Raumfahrt - Nuten für axial in Bohrungen montierbare Sicherungsringe, MaßeSérie aérospatiale - Dimensions des gorges pour anneaux d'arrêt, type intérieur, à montage axialAerospace series - Groove dimensions for axial mouting internal type retaining rings49.030.99Drugi vezni elementiOther fastenersICS:Ta slovenski standard je istoveten z:EN 3425:2006SIST EN 3425:2009en,de01-september-2009SIST EN 3425:2009SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 3425June 2006ICS 49.030.99 English VersionAerospace series - Groove dimensions for axial mouting internaltype retaining ringsSérie aérospatiale - Dimensions des gorges pour anneauxd'arrêt, type intérieur, à montage axialLuft-und Raumfahrt - Nuten für axial auf Wellenmontierbare Sicherungsringe MaßeThis European Standard was approved by CEN on 20 April 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 3425:2006: ESIST EN 3425:2009
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