EN 3280:2011
(Main)Aerospace series - Bearings, airframe rolling, rigid or self-aligning - Technical specification
Aerospace series - Bearings, airframe rolling, rigid or self-aligning - Technical specification
This European Standard specifies the required characteristics, inspection and test methods, qualification and acceptance conditions for rigid or self-aligning airframe rolling bearings.
Luft- und Raumfahrt - Flugwerklager, Wälzlager, Rillenkugellager oder Pendellager - Technische Lieferbedingungen
Die vorliegende Norm legt die geforderten Eigenschaftenüberprüfung, Prüfverfahren und die Qualifikations- und Annahmebedingungen für Wälzlager oder Pendelkugellager für Flugwerke fest.
Série aérospatiale - Roulements pour structure d’aéronefs, rigides ou à rotule - Spécification technique
La présente Norme Européenne spécifie les caractéristiques requises, les méthodes de contrôle et d'essai, les conditions de qualification et de réception pour des roulements pour structures d’aéronefs, rigides ou à rotule.
Aeronavtika - Ležaji, ležaji letalske šasije, togi ali samoprilagodljivi - Tehnične zahteve
Ta evropski standard določa zahtevane lastnosti, metode pregleda in preskusa ter pogoje za kvalifikacijo in sprejemljivost togih ali samoprilagodljivih ležajev letalske šasije.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.]DKWHYHLuft- und Raumfahrt - Flugwerklager Wälzlager, Rillenkugellager oder Pendellager - Technische LieferbedingungenSérie aérospatiale - Roulements pour structure d’aéronefs, rigides ou à rotule - Spécification techniqueAerospace series - Bearings, airframe rolling, rigid or self-aligning - Technical specification49.035Sestavni deli za letalsko in vesoljsko gradnjoComponents for aerospace constructionICS:Ta slovenski standard je istoveten z:EN 3280:2011SIST EN 3280:2011en,fr,de01-oktober-2011SIST EN 3280:2011SLOVENSKI
STANDARDSIST EN 3280:20011DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 3280
May 2011 ICS 49.035 Supersedes EN 3280:1994English Version
Aerospace series - Bearings, airframe rolling, rigid or self-aligning - Technical specification
Série aérospatiale - Roulements pour structure d'aéronefs, rigides ou à rotule - Spécification technique
Luft- und Raumfahrt - Flugwerklager Wälzlager, Rillenkugellager oder Pendellager - Technische Lieferbedingungen This European Standard was approved by CEN on 17 March 2011.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC 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 translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3280:2011: ESIST EN 3280:2011
Retention test for self-aligning bearing seals and shields . 11Annex B (normative)
Sand and dust test . 13Annex C (normative)
Test on the running behaviour of the bearings, retention of seals and shields at the limit temperatures. 14Annex D (normative)
Verification of running accuracy . 15Annex E (normative)
Verification of internal clearances . 18Annex F (normative)
Verification of permissible and ultimate static loads. 23Annex G (normative)
Lubricants – Essential characteristics . 28Annex H (normative)
Simplified qualification procedure . 29Bibliography . 34SIST EN 3280:2011
in corrosion resisting steel — Diameter series 8 and 9, reduced internal radial clearance — Dimensions and loads EN 4034, Aerospace series — Bearings, airframe rolling — Double row self-aligning ball bearings with flanged outer ring in corrosion resisting steel, reduced internal radial clearance — Dimensions and loads EN 9100, Quality Management Systems — Requirements for Aviation, Space and Defence Organizations EN 9133, Aerospace series — Quality management systems — Qualification procedure for aerospace standard parts ISO 1132-1:2000, Rolling bearings — Tolerances — Part 1: Terms and definitions 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 rolling bearings, rigid or self-aligning 3.1.1 general these bearings have a full complement of balls or rollers 3.1.2 shielded rolling bearing bearing whose rolling elements and raceways are protected with shields attached to one of the rings and separated from the other by a small space 3.1.3 sealed rolling bearing bearing whose rolling elements and raceways are completely enclosed by seals attached to one of the rings and rubbing on the other SIST EN 3280:2011
Measurement of bore and outer diameter: - Rings with a width of ≤ 10 mm: in the centre plane. - Rings with a width of > 10 mm: in two planes parallel to the outer faces and at a distance from these faces of twice the maximum value of the ring chamfer. The minimum and maximum diameters shall be determined in each measuring plane. Measurement of ring width: - The width of each ring (distance between the two faces) shall be verified at a minimum of four points. X X 4.3 Masses In accordance with the product standards or design documentation. Suitable methods X
4.4 Marking In accordance with the product standards or design documentation. It shall be legible and shall not adversely affect the material or the functioning of the bearing. Visual examination X X 4.5
Surface appearance No surface discontinuities liable to have an adverse effect on their characteristics and endurance.
X X 4.5.1
Assembled bearings
Visual inspection using suitable methods
4.5.2
Unassembled rings Magnetic or dye penetrant inspection
4.5.3
Rolling element See 4.5.1. Rolling element must be supplied with certificate of conformity. X X 4.6 Hardness In accordance with the product standards or design documentation. Suitable processes and measuring instruments c
X X 4.7 Surface roughness In accordance with product standards or design documentation. Suitable measuring instruments or
visual-tactile samples c X X 4.8 Surface treatment In accordance with product standards or design documentation. - Visual inspection - As per surface treatment standard X X 4.9 Lubrication At least 80 % of the free space in the bearing shall be charged with the grease specified in the product standards or design documentation (see Annex G). Visual i
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