BS EN 3727-2006 PDF

Full title and description

Aerospace series — Bearings, airframe rolling rigid with flanged alignment housing — Technical specification. This document is the BS national edition of EN 3727:2006 and specifies required characteristics and technical delivery conditions for airframe bearings with flanged, self‑aligning housings used in aerospace applications.

Abstract

EN 3727:2006 defines the designations, required characteristics, inspection and test methods, qualification and acceptance conditions for rolling bearings used in aircraft airframe applications where a rigid bearing with a flanged alignment housing is required. It establishes dimensional and performance requirements, inspection criteria and procurement/qualification provisions to ensure interchangeability and airworthiness when referenced in contracts and technical specifications.

General information

• Status: Published / Active (national adoptions exist; the EN 3727:2006 text is in force where adopted).
• Publication date: 30 June 2006 (EN 3727:2006; national adoptions published later in 2006–2007).
• Publisher: British Standards Institution as BS EN 3727:2006 (original text: CEN/EN 3727:2006; national bodies such as BSI, DIN and others publish national editions).
• ICS / categories: 49.035 — Components for aerospace construction.
• Edition / version: EN 3727:2006 (BS EN 3727:2006 national adoption).
• Number of pages: Typically reported as 38 pages for the BS EN edition (some national combined-language publications list larger page counts).

Scope

This standard applies to rolling bearings for aircraft airframe use provided as rigid bearings with flanged, self‑aligning housings. It specifies the required characteristics, inspection and test methods, qualification and acceptance conditions for these bearings and is intended to be invoked where a contracting authority or purchaser requires compliance with EN 3727. The standard is applicable to new production bearings supplied to aerospace OEMs and their approved suppliers.

Key topics and requirements

• Definition of bearing types and flanged, self‑aligning housing configurations.
• Dimensional, material and manufacturing requirements for airframe rolling bearings.
• Inspection and acceptance criteria, including visual, dimensional and functional checks.
• Specified test methods for qualification and lot acceptance.
• Marking, traceability and documentation requirements for procurement and supply.
• Qualification and supplier approval conditions for aerospace supply chains.

Typical use and users

Used by aerospace OEMs, aircraft component manufacturers, bearing suppliers, procurement and quality assurance teams, certification authorities and maintenance organisations that purchase, manufacture, qualify or inspect airframe bearings with flanged alignment housings. The standard is referenced in procurement documents, supplier quality plans and technical drawings where aviation‑grade bearing performance and traceability are required.

Related standards

Related and derivative documents include the original EN 3727:2006 text and various national adoptions (e.g., DIN EN 3727:2007, BSI national publication) as well as earlier or parallel aerospace bearing standards and technical delivery condition documents used in the aerospace sector. Other relevant aerospace bearing standards and EN series documents on bearing qualification and technical delivery conditions may be referenced alongside EN 3727 when specifying procurement requirements.

Keywords

airframe bearing; rolling bearing; flanged alignment housing; self‑aligning flange; aerospace series; qualification; inspection; technical specification; BS EN 3727:2006; EN 3727.

FAQ

Q: What is this standard?

A: EN 3727:2006 (published as BS EN 3727:2006 for the UK adoption) is a technical specification in the aerospace series that defines requirements for airframe rolling bearings with a rigid flanged, self‑aligning housing.

Q: What does it cover?

A: It covers designation, required characteristics, inspection and test methods, qualification and acceptance conditions, plus marking and documentation requirements for the specified type of airframe bearings. It is intended for use in procurement and supplier qualification.

Q: Who typically uses it?

A: Aircraft manufacturers (OEMs), bearing and component suppliers, maintenance organisations, procurement and QA/inspection teams, and any organisation that specifies or accepts airframe bearings for aerospace use.

Q: Is it current or superseded?

A: EN 3727:2006 is the 2006 edition and is published/adopted by national bodies (e.g., as BS EN 3727:2006, DIN EN 3727:2007). Sources list the standard as published/active where adopted; users should check with their national standards body or the relevant authority for the absolute current status or any amendments before relying on it for contract work.

Q: Is it part of a series?

A: Yes — it is part of the aerospace series of EN standards covering components for aerospace construction and related technical delivery conditions for bearings and similar parts. It can be used together with other EN and national aerospace standards.

Q: What are the key keywords?

A: Airframe bearing, rolling bearing, flanged housing, self‑aligning flange, aerospace series, inspection, qualification, BS EN 3727.