EN 3053:1994

Aerospace series - Bearings, airframe rolling - Single row self-aligning roller bearings in steel - Dimensions and loads

This standard specifies the characteristics of single row self-aligning roller bearings in steel designed to withstand only slow rotations, oscillations and/ or swivelling under load. They are intended for use in bell crank lever ends or at the end of rigid flight control rods for transmission purposes, before or after servo operations.The airframe rolling bearings defined in this standard are used from - 54°C to +150°C.

Luft- und Raumfahrt - Flugwerklager - Einreihige Tonnenlager aus Stahl - Maße und Belastungen

Diese Norm legt die Eigenschaften von einreihigen Tonnenlagern aus Stahl fest, die so ausgelegt sind, dass sie unter Belastung nur langsamen Dreh-, Schwenk- und/oder Pendelbewegungen standhalten. Sie sind zur Verwendung in Umlenkhebelköpfen oder Stangenköpfen für lineare Bediengestänge vor oder nach dem Stellantrieb vorgesehen. Die in der vorliegenden Norm festgelegten Flugwerklager sind in dem Temperatur- bereich von -54°C bis +150°C anwedbar.

Série aérospatiale - Roulements pour structures d'aéronefs - Roulements en acier, à rotule, sur une rangée de rouleaux - Dimensions et charges

La présente norme spécifie les caractéristiques des roulements en acier, à rotule, sur une rangée de rouleaux conçus pour supporter en charge uniquement des rotations lentes, des oscillations et/ou des rotulages faibles. Ils sont destinés à être utilisés dans des têtes de guignol ou en bout de bielle pour commandes rigides en translation, avant ou après servo. Les roulements de structure définis par la présente norme sont utilisables das l'intervalle de température de -54°C à +150°C.

Aerospace series - Bearings, airframe rolling - Single row self-aligning roller bearings in steel - Dimensions and loads

General Information

• Status: Published
• Publication Date: 28-Apr-1994
• Withdrawal Date: 30-Oct-1994
• ICS: 21.100.20 - Rolling bearings
• 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
• Ref Project: SIST EN 3053:2001 - Aerospace series - Bearings, airframe rolling - Single row self-aligning roller bearings in steel - Dimensions and loads

Overview

EN 3053:1994 is a European aerospace standard developed by CEN that specifies the dimensions and load characteristics of single row self-aligning roller bearings in steel, designed specifically for airframe rolling applications. These bearings are engineered to accommodate slow rotations, oscillations, and swiveling movements under load, making them essential components in aerospace flight control systems. The standard ensures reliable performance of these bearings within a temperature range of -54°C to +150°C, critical for the demanding environmental conditions experienced in aviation.

Key Topics

• Bearing Type: Single row self-aligning roller bearings made of steel, optimized for airframe rolling use.
• Functionality: Designed to withstand slow rotational speeds, oscillatory movements, and swiveling under load, which are common in aircraft flight control linkages.
• Applications: Intended for use specifically in bell crank lever ends and at the ends of rigid flight control rods, whether before or after servo operations.
• Temperature Range: Suitable for operating temperatures from -54°C to +150°C to accommodate extreme aerospace conditions.
• Dimensions and Loads: Defines precise dimensions and load capacities to ensure interchangeability and reliable mechanical performance in aerospace assemblies.
• Standard Compliance: Ensures uniformity across aerospace components, aiding manufacturers and maintenance providers in meeting rigorous quality and safety requirements.

Applications

EN 3053:1994 bearings play a critical role in aerospace structures where precise, reliable movement is essential for flight control operations. Typical applications include:

• Flight Control Systems: Bearings are used in control rods and bell crank lever ends to enable smooth oscillations and rotations needed for accurate control surface adjustments.
• Servo Linkages: Mounted before or after servomechanisms to transmit forces and motions safely and efficiently.
• Landing Gear Mechanisms: Where slow rotational movement and load-bearing capability under varying temperatures are essential.
• Aerospace Mechanical Assemblies: Used wherever slow-speed rolling and swiveling bearing loads need to be supported reliably over long service lifetimes.

Related Standards

• EN 4821 Series - Covers other types of aerospace bearings and their mechanical requirements.
• ISO 5753 - Pertains to roller bearing dimensional series which complements EN 3053 dimensions.
• MIL-STD-810 - Relates to environmental testing standards commonly applied alongside EN 3053 for aerospace components.
• AS 81820 - Aerospace bearing specifications that include testing and quality assurance aligning with EN 3053 requirements.

By adhering to EN 3053:1994, aerospace manufacturers ensure robustness, dimensional compatibility, and performance stability in critical flight control components, ultimately enhancing aircraft safety and reliability. This standard provides the technical backbone for airframe bearing design where slow rotations and oscillations are routine, helping aviation engineers meet demanding operational challenges with precision-engineered steel bearings.

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2001
Aerospace series - Bearings, airframe rolling - Single row self-aligning roller
bearings in steel - Dimensions and loads
Aerospace series - Bearings, airframe rolling - Single row self-aligning roller bearings in
steel - Dimensions and loads
Luft- und Raumfahrt - Flugwerklager - Einreihige Tonnenlager aus Stahl - Maße und
Belastungen
Série aérospatiale - Roulements pour structures d'aéronefs - Roulements en acier, a
rotule, sur une rangée de rouleaux - Dimensions et charges
Ta slovenski standard je istoveten z: EN 3053:1994
ICS:
49.035 Sestavni deli za letalsko in Components for aerospace
vesoljsko gradnjo construction
...