EN 4040:2006
(Main)Aerospace series - Bearings, spherical plain in corrosion resisting steel with self-lubricating liner with wide inner ring - Elevated loads at ambient temperature - Dimensions and loads
Aerospace series - Bearings, spherical plain in corrosion resisting steel with self-lubricating liner with wide inner ring - Elevated loads at ambient temperature - Dimensions and loads
This standard specifies the characteristics of spherical plain bearings in corrosion resisting steel with self-lubricating liner, with wide inner ring, for elevated loads at ambient temperature.
They are intended for use between fixed or moving parts of the aircraft structure and their control mechanisms.
The spherical plain bearings defined in this standard are used from - 55 °C to 163 °C.
Luft- und Raumfahrt - Gelenklager aus korrosionsbeständigem Stahl mit selbstschmierender Beschichtung mit breitem Innenring - Hohe Belastung bei Raumtemperatur - Maße und Belastungen
Diese Norm legt die Eigenschaften von Gelenklagern aus korrosionsbeständigem Stahl mit selbst¬schmierender Beschichtung und breitem Innenring für hohe Belastungen bei Raumtemperatur fest.
Sie sind zur Verwendung zwischen starren und beweglichen Flugwerkteilen und deren Steuerungs¬einrichtungen bestimmt.
Die in dieser Norm festgelegten Gelenklager werden im Temperaturbereich von 55 °C bis 163 °C eingesetzt.
Série aérospatiale - Rotules en acier résistant à la corrosion à garniture autolubrifiante avec bague intérieure large - Série à charge élevée à température ambiante - Dimensions et charges
Aeronavtika - Ležaji, krogelni, drsni, iz korozijsko odpornega jekla s samomazalno oblogo, s širokim notranjim obročem - Serija za višje obremenitve pri temperaturi okolice - Mere in nosilnosti
General Information
- Status
- Published
- Publication Date
- 02-May-2006
- Withdrawal Date
- 29-Nov-2006
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 3 - Mechanical
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 31-May-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
- Effective Date
- 28-Jan-2026
Overview
EN 4040:2006 (CEN) is an aerospace standard that defines the dimensions, loads and required characteristics for spherical plain bearings made of corrosion-resisting steel with a self-lubricating liner and a wide inner ring, intended for elevated loads at ambient temperature. These aerospace spherical plain bearings are specified for use between fixed or moving parts of the aircraft structure and their control mechanisms and are rated for operation from −55 °C to 163 °C.
Key topics and requirements
- Geometry and tolerances: Detailed dimensional drawings, tolerances and masses (see Figure 1/2 and Table 1 in the standard) are provided for bearings with and without swaging grooves.
- Materials and hardness:
- Inner ring: steel per EN 2030, 55–62 HRC.
- Outer ring: steel per EN 2539 (or related documents), 28–37 HRC before swaging.
- Liner: self-lubricating, low-friction wear-resistant material consistent with EN 2755.
- Surface treatment: Inner ring passivation options referenced to ISO 8075 (code T) or no surface treatment (no code); break sharp edges and remove burrs.
- Surface roughness: Specified values (pre-treatment) tied to the dimensional drawings.
- Loads and starting torque: Permissible static and dynamic radial/axial loads and starting torque values are specified (Table 2), including notes that bearings with swaging grooves may have reduced push-out loads.
- Designation and marking: Standardized designation format (example: EN4040S06TN), marking per EN 2424 (style A), and manufacturer/originator coding rules.
- Operational envelope: Intended for elevated static loads at ambient temperature within the stated temperature range.
Applications and users
EN 4040 is primarily used by:
- Aerospace design and structural engineers specifying joint and bearing components for control linkages and structural interfaces.
- Bearing manufacturers and suppliers producing spherical plain bearings for aircraft applications.
- Procurement and quality assurance teams ensuring components meet aerospace dimensional, material and load requirements.
- Maintenance, repair and overhaul (MRO) organizations and certification bodies verifying conformity for installed bearings.
Practical applications include bearings in control mechanisms, actuator linkages and structural articulation points where corrosion resistance, self-lubrication and the ability to carry elevated loads are required.
Related standards
- ISO 1132-1 (terms and definitions)
- ISO 8075 (surface treatment of hardenable stainless steel)
- EN 2755 (technical specification for similar bearings)
- EN 2030, EN 2539 / EN 3161 (steel material specifications)
- EN 2424 (marking of aerospace products)
Keywords: EN 4040, aerospace spherical plain bearings, corrosion resisting steel, self-lubricating liner, dimensions and loads, wide inner ring, aerospace bearings, elevated loads.
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Frequently Asked Questions
EN 4040:2006 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Bearings, spherical plain in corrosion resisting steel with self-lubricating liner with wide inner ring - Elevated loads at ambient temperature - Dimensions and loads". This standard covers: This standard specifies the characteristics of spherical plain bearings in corrosion resisting steel with self-lubricating liner, with wide inner ring, for elevated loads at ambient temperature. They are intended for use between fixed or moving parts of the aircraft structure and their control mechanisms. The spherical plain bearings defined in this standard are used from - 55 °C to 163 °C.
This standard specifies the characteristics of spherical plain bearings in corrosion resisting steel with self-lubricating liner, with wide inner ring, for elevated loads at ambient temperature. They are intended for use between fixed or moving parts of the aircraft structure and their control mechanisms. The spherical plain bearings defined in this standard are used from - 55 °C to 163 °C.
EN 4040:2006 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 4040:2006 has the following relationships with other standards: It is inter standard links to EN 2424:2008, EN 3161:2007, EN 13522:2001, CEN/TS 13130-12:2005, EN 2755:2021, EN 2755:2009. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 4040:2006 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 - Gelenklager aus korrosionsbeständigem Stahl mit selbstschmierender Beschichtung mit breitem Innenring - Hohe Belastung bei Raumtemperatur - Maße und BelastungenSérie aérospatiale - Rotules en acier résistant à la corrosion à garniture autolubrifiante avec bague intérieure large - Série à charge élevée à température ambiante - Dimensions et chargesAerospace series - Bearings, spherical plain in corrosion resisting steel with self-lubricating liner with wide inner ring - Elevated loads at ambient temperature - Dimensions and loads49.035Sestavni deli za letalsko in vesoljsko gradnjoComponents for aerospace constructionICS:Ta slovenski standard je istoveten z:EN 4040:2006SIST EN 4040:2009en,de01-junij-2009SIST EN 4040:2009SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 4040May 2006ICS 49.035 English VersionAerospace series - Bearings, spherical plain in corrosionresisting steel with self-lubricating liner with wide inner ring -Elevated loads at ambient temperature - Dimensions and loadsSérie aérospatiale - Rotules en acier résistant à lacorrosion à garniture autolubrifiante avec bague intérieurelarge - Série à charge élevée à température ambiante -Dimensions et chargesLuft- und Raumfahrt - Gelenklager auskorrosionsbeständigem Stahl mit selbstschmierenderBeschichtung mit breitem Innenring - Hohe Belastung beiRaumtemperatur - 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 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 4040:2006: ESIST EN 4040:2009
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