SIST EN 3287:2001

Aerospace series - Bearings, airframe rolling - Double row self-aligning ball bearings in steel - Diameter series 2 - Dimensions and loads

This standard specifies the characteristics of double row self-aligning ball bearings in steel of diameter series 2 designed to withstand only slow rotationsoscillations and/or swivelling under load. They qre intended for use between fixed and moving parts of the aircraft structure and their control mechanisms. The airframe rolling bearings defined in this standard are used from -54°C to +150°C.

Luft- und Raumfahrt - Zweireihige Pendelkugellager aus Stahl - Durchmesserreihe 2 - Maße und Belastungen

Diese Norm legt die Eigenschaften von zweireihigen Pendelkugellagern aus Stahl der Durchmesserreihe 2 fest, die so ausgelegt sind, dass sie unter Belastung nurlangsamen Dreh-, Schwenk- und/oder Pendelbewegungen standhalten. Sie sind zur Verwendung zwischen starren und beweglichen Flugwerkteilen und deren Steuerungseinrichtungen 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, a rotule, sur deux rangées de billes - Série de diametres 2 - Dimensions et charges

La présente norme spécifie les caractéristiques des roulements en acier, à rotule, sur deux rangées de billes, série de diamètres 2 conçus pour supporter en charge uniquement des rotations lentes, des oscillations et/ou des rotulages faibles. Ils sont destinés à être utilisés entre les éléments fixes et mobiles de la structure des aéronefs et de leurs mécanismes de commande. 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 - Double row self-aligning ball bearings in steel - Diameter series 2 - Dimensions and loads

General Information

• Status: Published
• Publication Date: 31-Dec-2000
• ICS: 49.035 - Components for aerospace construction
• Technical Committee: SS SPL - Technical Board for the general field
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jan-2001
• Due Date: 01-Jan-2001
• Completion Date: 01-Jan-2001
• Ref Project: EN 3287:1994 - Aerospace series - Bearings, airframe rolling - Double row self-aligning ball bearings in steel - Diameter series 2 - Dimensions and loads

Relations

• Referred By: SIST EN 3280:2011 - Aerospace series - Bearings, airframe rolling, rigid or self-aligning - Technical specification
• Effective Date: 28-Jan-2026

Overview

SIST EN 3287:2001, published by CEN, is a key standard within the aerospace series, focusing on airframe rolling bearings. Specifically, it defines the requirements for double row self-aligning ball bearings in steel, classified under diameter series 2. These precision components are engineered to support slow rotational movements, oscillations, and swivelling motions under load conditions, serving as critical interfaces between fixed and moving parts of aircraft structures and their control mechanisms. The standard specifies operational suitability for temperatures ranging from -54°C to +150°C.

Key Topics

• Bearing Characteristics: SIST EN 3287:2001 outlines the attributes of double row self-aligning ball bearings made from steel, suitable for aerospace environments.
• Dimensions and Loads: The standard specifies key dimensions and load ratings for diameter series 2, ensuring compatibility and performance within typical aircraft assemblies.
• Operational Limits: Bearings defined in this standard are intended for locations where movements are slow and loads may be variable, such as control system hinges and pivot points.
• Material Specification: Only steel is specified, providing consistency in strength, durability, and thermal performance.
• Temperature Range: Bearings must reliably operate from -54°C up to +150°C, covering most aerospace deployment scenarios.
• Interchangeability: Standardization of design ensures interchangeability across the aerospace industry, promoting quality and reducing lifecycle costs.

Applications

Airframe rolling bearings described in SIST EN 3287:2001 are widely used in the aerospace sector for both civil and military aircraft. Their common applications include:

• Joints between fixed and moving structural elements, such as flaps, ailerons, elevators, and landing gear assemblies.
• Control mechanism pivots, where slow rotational or oscillatory movement is required under varying loads.
• Swivelling parts, allowing for smooth, aligned movement, reducing wear and maintenance.
• Passive or semi-active joints, where minimizing play and maximizing service life under fluctuating loads are critical.
• Maintenance and Replacement: The standardization enables seamless maintenance, replacement, and inventory control within the aircraft industry.

These bearings significantly enhance reliability, safety, and efficiency in aerospace engineering by providing consistent performance in demanding environments.

Related Standards

To ensure full compliance and integration, users of SIST EN 3287:2001 may also reference related European and international standards, such as:

• EN 3286 - Bearings, airframe rolling - General requirements
• EN 3290 - Aerospace series - Ball bearings - Technical specifications
• EN ISO 281 - Rolling bearings - Dynamic load ratings and rating life
• EN 9100 - Quality management systems in aerospace sector

Additionally, the standard fits under ICS 49.035: Components for aerospace construction, aligning with numerous other standards for aerospace components and assemblies.

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By adhering to SIST EN 3287:2001, aerospace manufacturers, maintenance engineers, and procurement specialists can ensure optimal compatibility, performance, and safety for critical aircraft systems, reinforcing high standards across the aviation industry.

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2001
Aerospace series - Bearings, airframe rolling - Double row self-aligning ball
bearings in steel - Diameter series 2 - Dimensions and loads
Aerospace series - Bearings, airframe rolling - Double row self-aligning ball bearings in
steel - Diameter series 2 - Dimensions and loads
Luft- und Raumfahrt - Zweireihige Pendelkugellager aus Stahl - Durchmesserreihe 2 -
Maße und Belastungen
Série aérospatiale - Roulements pour structures d'aéronefs - Roulements en acier, a
rotule, sur deux rangées de billes - Série de diametres 2 - Dimensions et charges
Ta slovenski standard je istoveten z: EN 3287:1994
ICS:
49.035 Sestavni deli za letalsko in Components for aerospace
vesoljsko gradnjo c
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