EN 3056:1994
(Main)Aerospace series - Bearings, airframe rolling - Rigid double row ball bearings in steel - Dimensions and loads
Aerospace series - Bearings, airframe rolling - Rigid double row ball bearings in steel - Dimensions and loads
This standard specifies the characteristics of rigid double row bearings in steel designed to withstand only slow rotations and oscillations under load. They are intended for use in the hubs of bell crank levers fitted with a single bearing. The airframe rolling bearings defined in this standard are used form -54°C to 150°C.
Luft- und Raumfahrt - Flugwerklager - Zweireihige Rillenkugellager aus Stahl - Maße und Belastungen
Diese Norm legt die Eigenschaften von zweireihigen Rillenkugellagern aus Stahl fest, die so ausgelegt sind, dass sie unter Belastung nur langsamen Dreh- und Schwenkbewegungen standhalten. Sie sind zur Verwendung in den Naben von Umlenkhebeln, die mit einem Wälzlager ausgerüstet sind, vorgesehen. Die in der vorliegenden Norm festgelegten Flugwerklager sind in dem Temperatur- bereich von -54°C bis 150°C anwendbar.
Série aérospatiale - Roulements pour structures d'aéronefs - Roulements en acier, rigides, à deux rangées de billes - Dimensions et charges
La présente norme spécifie les caractéristiques des roulements en acier, rigides, à deux rangées de billes conçus pour supporter en charge uniquement des rotations lentes et des oscillations faibles. Ils sont destinés à être utilisés dans des moyeux de guignol équipés d'un seul roulement. Les roulements de structure définis par la présente norme sont utilisables dans l'intervalle de température de -54°C à +150°C.
Aerospace series - Bearings, airframe rolling - Rigid double row ball bearings in steel - Dimensions and loads
General Information
- Status
- Published
- Publication Date
- 28-Apr-1994
- Withdrawal Date
- 30-Oct-1994
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 3 - Mechanical
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 21-Jan-2025
- Completion Date
- 14-May-2025
Overview
EN 3056:1994 (adopted as SIST EN 3056:2001) is a CEN aerospace series standard that defines the characteristics of rigid double row ball bearings in steel for airframe rolling applications. The standard covers dimensions and loads for bearings intended to withstand only slow rotations and oscillations under load and specifies their intended use in the hubs of bell crank levers fitted with a single bearing. Design limits include operation in the temperature range -54 °C to 150 °C.
Key topics and technical requirements
- Bearing type and construction: rigid, double row ball bearings manufactured from steel, tailored for airframe rolling use.
- Operational motion: suitable only for slow rotations and oscillatory movement under load - not for continuous high-speed operation.
- Dimensions and interchangeability: standardized external and internal dimensions to ensure compatibility for replacement and procurement (EN 3056 specifies dimensional classes and tolerances).
- Load considerations: requirements for radial and axial loads as applicable to bell crank lever hubs; the standard specifies load-related characteristics and ratings rather than extended dynamic duty cycles.
- Environmental range: declared suitability for service temperatures from -54 °C to 150 °C, reflecting typical aerospace environmental extremes.
- National adoption: EN 3056:1994 has been adopted by national bodies (for example, SIST EN 3056:2001 in Slovenia), ensuring harmonized application across member countries.
Applications
- Specification and selection of airframe rolling bearings used in control linkages, bell crank lever hubs, pivots and other locations where slow oscillation or rotation is the primary motion.
- Procurement and acceptance criteria for aerospace component suppliers and OEMs requiring standardized rigid double row ball bearings in steel.
- Design and maintenance guidance for aircraft structures where bearings must perform reliably across a wide temperature range and under oscillatory loads.
Who uses this standard
- Aerospace design and structural engineers specifying bearing components.
- Manufacturers and suppliers of aerospace bearings and mechanical interfaces.
- Procurement, quality assurance, and maintenance teams verifying dimensional compatibility and load capacity of replacement bearings.
- Certification and regulatory bodies referencing standardized component specifications.
Related standards
- EN 3056 is part of the CEN aerospace series and is typically used alongside other national adoptions (e.g., SIST EN 3056:2001).
- It is commonly referenced in conjunction with broader bearing standards and aerospace component regulations (ISO and industry-specific standards) when developing detailed design or procurement specifications.
Keywords: EN 3056, rigid double row ball bearings, airframe rolling bearings, aerospace bearings, dimensions and loads, bearings in steel, bell crank lever hubs.
Frequently Asked Questions
EN 3056:1994 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Bearings, airframe rolling - Rigid double row ball bearings in steel - Dimensions and loads". This standard covers: This standard specifies the characteristics of rigid double row bearings in steel designed to withstand only slow rotations and oscillations under load. They are intended for use in the hubs of bell crank levers fitted with a single bearing. The airframe rolling bearings defined in this standard are used form -54°C to 150°C.
This standard specifies the characteristics of rigid double row bearings in steel designed to withstand only slow rotations and oscillations under load. They are intended for use in the hubs of bell crank levers fitted with a single bearing. The airframe rolling bearings defined in this standard are used form -54°C to 150°C.
EN 3056:1994 is classified under the following ICS (International Classification for Standards) categories: 21.100.20 - Rolling bearings. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 3056:1994 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.Aerospace series - Bearings, airframe rolling - Rigid double row ball bearings in steel - Dimensions and loadsLuft- und Raumfahrt - Flugwerklager - Zweireihige Rillenkugellager aus Stahl - Maße und BelastungenSérie aérospatiale - Roulements pour structures d'aéronefs - Roulements en acier, rigides, a deux rangées de billes - Dimensions et chargesAeros
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...