EN 3061:2007
(Main)Aerospace series - Bearings, airframe rolling - Rigid single row ball bearings in corrosion resisting steel, with flanged alignment housing - Dimensions and loads
Aerospace series - Bearings, airframe rolling - Rigid single row ball bearings in corrosion resisting steel, with flanged alignment housing - Dimensions and loads
This standard specifies the characteristics of rigid single row ball bearings in corrosion resisting steel with a solid or lightweight flanged alignment housing, designed to withstand only slow rotations and slight oscillations under load.
They are intended for use in the hubs of torsion lever and in separated supports for airframe/aerospace applications.
The airframe rolling bearings defined in this standard may be used in the temperature range from - 54 °C to 150 °C.
However, being lubricated with the following greases (see EN 3727):
ester type very high pressure grease (code letter A), operating range from - 73 °C to 121 °C or,
synthetic hydrocarbons type very high pressure grease general purpose (code letter B) operating range from - 54 °C to 177 °C.
Their field of application when lubricated with code letter A grease is limited to 121 °C.
Luft- und Raumfahrt - Flugwerklager - Einreihige Rillenkugellager aus korrosionsbeständigem Stahl mit selbsteinstellendem Flansch - Maße und Belastungen
Diese Norm legt die Eigenschaften von einreihigen Rillenkugellagern aus korrosionsbeständigem Stahl mit selbsteinstellendem Voll- oder Teilflansch fest, die so ausgelegt sind, dass sie unter Belastung nur langsamen Dreh und geringen Schwenkbewegungen standhalten.
Sie sind zur Verwendung in den Naben von Torsionshebeln und in getrennten Auflagern für Flugwerk¬teile/ Anwendungen in der Luft und Raumfahrt vorgesehen.
Die in der vorliegenden Norm festgelegten Flugwerklager können im Temperaturbereich von –54 °C bis 150 °C verwendet werden.
Jedoch mit folgenden Fetten geschmiert (siehe EN 3727):
Hochdruckfett auf Esterbasis (Kennbuchstabe A), Betriebstemperaturbereich –73 °C bis 121 °C; oder
Hochdruckfett auf der Basis von synthetischen Kohlenwasserstoffen (Kennbuchstabe B), Betriebs¬temperaturbereich –54 °C bis 177 °C.
Ihr Anwendungsbereich ist bei Schmierung mit Fett mit dem Kennbuchstaben A auf 121 °C eingeschränkt.
Série aérospatiale - Roulements pour structures d'aéronefs - Roulements en acier résistant à la corrosion, rigides, à une rangée de billes, avec bague d'alignement à collerette - Dimensions et charges
Aeronavtika - Kotalni ležaji za letala - Enoredni žlebasti kroglični ležaji iz korozijsko odpornega jekla s samonastavljivo prirobnico - Mere in nosilnosti
General Information
- Status
- Published
- Publication Date
- 19-Jun-2007
- Withdrawal Date
- 30-Dec-2007
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 3 - Mechanical
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 30-Jun-2017
- Completion Date
- 28-Jan-2026
Relations
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
EN 3061:2007 is a European standard developed by CEN that specifies requirements for rigid single row ball bearings in corrosion-resisting steel with a flanged alignment housing specifically designed for aerospace and airframe rolling applications. These bearings are engineered to withstand slow rotations and slight oscillations under load, making them suitable for use in torsion lever hubs and separated support systems of aircraft structures.
Key features of the standard include strict definitions on dimensions, loads, tolerances, and materials to ensure optimal performance and reliability in critical aerospace environments. The bearings operate effectively within a temperature range of -54 °C to 150 °C, with lubrication options defined in conjunction with EN 3727 to extend operating conditions.
Key Topics
Bearing Construction
The bearings comprise a rigid, corrosion-resistant single row of balls housed within a solid or lightweight flanged alignment housing. Components include inner and outer rings, balls, shields or seals (options defined by manufacturer), and alignment housing coded as either solid or lightweight.Dimensions and Tolerances
All dimensional specifications, including bore diameters, clearances, runouts, and torques, are rigorously defined with micrometre-level tolerances. Surface roughness and finishing conditions prior to surface treatment (passivation or none) are standardized for optimal assembly and longevity.Load Capacities
The standard provides detailed permissible static axial and radial loads based on housing type-solid (code C) or lightweight (code D). Operators can reference displacement-specific load values for precise sizing and application needs.Materials and Surface Treatments
Materials are selected for aerospace-grade hardness and corrosion resistance: stainless steel grades EN 2030, EN 2226, and EN 2502, among others, with specified hardness levels (e.g., 58 HRC for rings and balls). Surface treatment primarily involves ISO 8075 passivation ensuring protective coatings against corrosion.Lubrication and Temperature Range
Bearings must be lubricated using greases defined in EN 3727: ester type very high pressure grease (code A) and synthetic hydrocarbons grease (code B), with specific operating temperature ranges-up to 121 °C for code A and 177 °C for code B grease.Marking and Designation
Traceability and identification adhere to EN 2424 marking standards, with a clear designation format detailing grease type, diameter code, bearing type, alignment housing, and surface treatment.
Applications
EN 3061:2007 bearings are primarily tailored for aerospace structural components, including:
- Hubs in torsion levers
- Separated support assemblies in airframes
- Components requiring low-speed rotational movement and slight oscillations under load
- Environments demanding corrosion resistance and wide temperature tolerance
These bearings contribute to enhanced reliability and safety in aerospace mechanical design by ensuring predictable performance, longevity, and resistance to harsh operating conditions such as low temperatures and corrosive atmospheres.
Related Standards
- EN 3727 – Technical specifications for airframe rolling bearings with flanged alignment housing, detailing lubrication and ultimate load conditions.
- ISO 1132-1 – Rolling bearings terms, definitions, and tolerances which form the basis for terminology in EN 3061.
- ISO 8075 – Surface treatment guidelines for hardenable stainless steel aerospace parts relevant for passivation processes described.
- EN 2424 – Aerospace product marking standard ensuring consistent identification practices.
- Various EN standards (EN 2030, EN 2226, EN 2502, EN 2503) defining the steel grades and mechanical properties required for the manufacture of bearing components.
Keywords: EN 3061:2007, aerospace bearings, airframe rolling bearings, single row ball bearings, corrosion resistant steel, flanged alignment housing, aerospace standards, aerospace ball bearings, airframe components, bearing dimensions, bearing loads, aerospace lubrication, bearing tolerance, aerospace materials, bearing surface treatment.
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Frequently Asked Questions
EN 3061:2007 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Bearings, airframe rolling - Rigid single row ball bearings in corrosion resisting steel, with flanged alignment housing - Dimensions and loads". This standard covers: This standard specifies the characteristics of rigid single row ball bearings in corrosion resisting steel with a solid or lightweight flanged alignment housing, designed to withstand only slow rotations and slight oscillations under load. They are intended for use in the hubs of torsion lever and in separated supports for airframe/aerospace applications. The airframe rolling bearings defined in this standard may be used in the temperature range from - 54 °C to 150 °C. However, being lubricated with the following greases (see EN 3727): ester type very high pressure grease (code letter A), operating range from - 73 °C to 121 °C or, synthetic hydrocarbons type very high pressure grease general purpose (code letter B) operating range from - 54 °C to 177 °C. Their field of application when lubricated with code letter A grease is limited to 121 °C.
This standard specifies the characteristics of rigid single row ball bearings in corrosion resisting steel with a solid or lightweight flanged alignment housing, designed to withstand only slow rotations and slight oscillations under load. They are intended for use in the hubs of torsion lever and in separated supports for airframe/aerospace applications. The airframe rolling bearings defined in this standard may be used in the temperature range from - 54 °C to 150 °C. However, being lubricated with the following greases (see EN 3727): ester type very high pressure grease (code letter A), operating range from - 73 °C to 121 °C or, synthetic hydrocarbons type very high pressure grease general purpose (code letter B) operating range from - 54 °C to 177 °C. Their field of application when lubricated with code letter A grease is limited to 121 °C.
EN 3061:2007 is classified under the following ICS (International Classification for Standards) categories: 49.035 - Components for aerospace construction. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 3061:2007 has the following relationships with other standards: It is inter standard links to EN 2424:2008, EN 3161:2007, EN 3727:2006, EN 13522:2001, CEN/TS 13130-12:2005. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 3061:2007 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Flugwerklager - Einreihige Rillenkugellager aus korrosionsbeständigem Stahl mit selbsteinstellendem Flansch - Maße und BelastungenSérie aérospatiale - Roulements pour structures d'aéronefs - Roulements en acier résistant à la corrosion, rigides, à une rangée de billes, avec bague d'alignement à collerette - Dimensions et chargesAerospace series - Bearings, airframe rolling - Rigid single row ball bearings in corrosion resisting steel, with flanged alignment housing - Dimensions and loads49.035Sestavni deli za letalsko in vesoljsko gradnjoComponents for aerospace constructionICS:Ta slovenski standard je istoveten z:EN 3061:2007SIST EN 3061:2009en,de01-september-2009SIST EN 3061:2009SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 3061June 2007ICS 49.035 English VersionAerospace series - Bearings, airframe rolling - Rigid single rowball bearings in corrosion resisting steel, with flanged alignmenthousing - Dimensions and loadsSérie aérospatiale - Roulements pour structures d'aéronefs- Roulements en acier résistant à la corrosion, rigides, àune rangée de billes, avec bague d'alignement à collerette -Dimensions et chargesLuft- und Raumfahrt - Flugwerklager - EinreihigeRillenkugellager aus korrosionsbeständigem Stahl mitselbsteinstellendem Flansch - Maße und BelastungenThis European Standard was approved by CEN on 16 March 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 CEN Management Centre 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 CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 3061:2007: ESIST EN 3061:2009
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