EN 4854-3:2019
(Main)Aerospace series — Bearing, spherical plain, in corrosion resisting steel with self-lubricating liner, low starting torque and low friction coefficient, elevated duty cycles under low oscillations at different operating conditions — Part 3: Technical specification
Aerospace series — Bearing, spherical plain, in corrosion resisting steel with self-lubricating liner, low starting torque and low friction coefficient, elevated duty cycles under low oscillations at different operating conditions — Part 3: Technical specification
This European Standard specifies the required characteristics, inspection and test methods, qualification and acceptance conditions for spherical plain bearings in corrosion resisting steel with self-lubricating liner, low starting torque and low friction coefficient, elevated duty cycles under low oscillations at different operating conditions.
This standard applies whenever referenced.
These self-lubricating spherical plain bearings are intended for use in fixed or moving parts of the aircraft structure especially for control mechanism and operating systems. The bearings are designed subjected under low dynamic radial loads and slow rotations in the temperature range of −55 °C to 120 °C (−67 °F to 248 °F).
The liner may be of a fabric or composite material bonded to the inside diameter of the outer ring or in a composite material moulded into a pre-formed cavity between the inner and outer rings.
Luft- und Raumfahrt - Gelenklager aus korrosionsbeständigem Stahl mit selbstschmierender Beschichtung, geringem Losbrechmoment und niedrigem Reibungskoeffizienten, hohe Anzahl an gering oszillierenden Belastungszyklen bei unterschiedlichen Einsatzbedingungen - Teil 3: Technische Lieferbedingungen
Diese Europäische Norm legt die erforderlichen Eigenschaften, Inspektions- und Prüfverfahren, Qualifika-tions- und Abnahmebedingungen für Gelenklager aus korrosionsbeständigem Stahl mit selbstschmierender Beschichtung, geringem Losbrechmoment und niedrigem Reibungskoeffizienten, einer hohen Anzahl an gering oszillierenden Belastungszyklen bei unterschiedlichen Einsatzbedingungen fest.
Diese Norm gilt immer, wenn auf sie verwiesen wird.
Diese Gelenklager mit selbstschmierender Beschichtung sind für den Einsatz in starren oder beweglichen Teilen der Luftfahrzeugstruktur, speziell für Steuerungsmechanismen und Bediensysteme, vorgesehen. Die Lager sind so ausgelegt, dass sie geringen dynamischen Radiallasten und langsamen Drehungen im Temperaturbereich von −55 °C bis 120 °C (−67 °F bis 248 °F) widerstehen können.
Die Beschichtung darf aus einem Gewebe oder Verbundmaterial bestehen, das an dem Innendurchmesser des Außenrings aufgeklebt oder aus einem Verbundmaterial, das in einem vorgeformten Hohlraum zwischen den Innen- und Außenringen eingegossen ist.
Série aérospatiale - Rotules lisses en acier résistant à la corrosion à garniture autolubrifiante, faible couple de démarrage et faible coefficient de frottement, cycles d'endurance élevés sous faibles oscillations à différentes conditions de fonctionnement - Partie 3 : 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 les rotules lisses en acier résistant à la corrosion à garniture autolubrifiante, faible couple de démarrage et faible coefficient de frottement, cycles d'endurance élevés sous faibles oscillations à différentes conditions de fonctionnement.
La présente norme s'applique chaque fois qu'elle est citée en référence.
Ces rotules lisses autolubrifiantes sont destinées à être utilisées dans les parties fixes ou mobiles de la structure de l’aéronef, particulièrement pour les mécanismes de commande et les systèmes d’actionnement. Les rotules sont conçues pour être soumises à de faibles charges radiales dynamiques et à des rotations lentes dans une plage de températures de −55 °C à 120 °C (−67 °F à 248 °F).
La garniture peut être en tissu ou en matériau composite collé au diamètre intérieur de la bague extérieure ou en matériau composite moulé dans une cavité préformée entre les bagues intérieure et extérieure.
Aeronavtika - Kroglasti drsni ležaj iz korozijsko odpornega jekla s samomazalno oblogo, z majhnim začetnim navorom in majhnim tornim količnikom, povišanimi delovnimi cikli pri nizkih oscilacijah v različnih obratovalnih pogojih - 3. del: Tehnična specifikacija
Ta dokument določa zahtevane značilnosti, preglede in preskusne metode ter kvalifikacijo in pogoje sprejemljivosti za kroglaste drsne ležaje iz korozijsko odpornega jekla s samomazalno oblogo, majhnim začetnim navorom in majhnim tornim količnikom ter povišanimi delovnimi cikli pri nizkih nihanjih v različnih obratovalnih pogojih. Ta standard se uporablja, kadar je naveden. Ti samomazalni kroglasti drsni ležaji so namenjeni za uporabo v fiksnih ali premikajočih se delih ogrodja letala, predvsem za nadzorne mehanizme in operacijske sisteme. Ležaji so zasnovani za nizke dinamične radialne obremenitve in počasne rotacije v temperaturnem razponu od –55 °C do 120 °C (od –67 °F do 248 °F). Obloga je lahko iz tkanine ali kompozita, povezanega z notranjim premerom zunanjega obroča, ali iz kompozita, odlitega v predhodno oblikovano odprtino med notranjim in zunanjim obročem.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2020
Aeronavtika - Kroglasti drsni ležaj iz korozijsko odpornega jekla s samomazalno
oblogo, z majhnim začetnim navorom in majhnim tornim količnikom, povišanimi
delovnimi cikli pri nizkih oscilacijah v različnih obratovalnih pogojih - 3. del:
Tehnična specifikacija
Aerospace series - Bearing, spherical plain, in corrosion resisting steel with self-
lubricating liner, low starting torque and low friction coefficient, elevated duty cycles
under low oscillations at different operating conditions - Part 3: Technical specification
Luft- und Raumfahrt - Gelenklager aus korrosionsbeständigem Stahl mit
selbstschmierender Beschichtung, geringem Losbrechmoment und niedrigem
Reibungskoeffizienten, hohe Anzahl an gering oszillierenden Belastungszyklen bei
unterschiedlichen Einsatzbedingungen - Teil 3: Technische Lieferbedingungen
Série aérospatiale - Rotules en acier résistant à la corrosion à garniture autolubrifiante,
faible couple de démarrage et faible coefficient de frottement, cycles d'endurances
élevés sous faibles oscillations à différentes conditions de fonctionnement, série large -
Partie 3 : Spécification Technique
Ta slovenski standard je istoveten z: EN 4854-3:2019
ICS:
21.100.10 Drsni ležaji Plain bearings
49.060 Letalska in vesoljska Aerospace electric
električna oprema in sistemi equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 4854-3
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2019
EUROPÄISCHE NORM
ICS 49.035
English Version
Aerospace series - Bearing, spherical plain, in corrosion
resisting steel with self-lubricating liner, low starting
torque and low friction coefficient, elevated duty cycles
under low oscillations at different operating conditions -
Part 3: Technical specification
Série aérospatiale - Rotules en acier résistant à la Luft- und Raumfahrt - Gelenklager aus
corrosion à garniture autolubrifiante, faible couple de korrosionsbeständigem Stahl mit selbstschmierender
démarrage et faible coefficient de frottement, cycles Beschichtung, geringem Losbrechmoment und
d'endurances élevés sous faibles oscillations à niedrigem Reibungskoeffizienten, hohe Anzahl an
différentes conditions de fonctionnement, série large - gering oszillierenden Belastungszyklen bei
Partie 3 : Spécification Technique unterschiedlichen Einsatzbedingungen - Teil 3:
Technische Lieferbedingungen
This European Standard was approved by CEN on 12 November 2018.
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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4854-3:2019 E
worldwide for CEN national Members.
Contents
Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Requirements, inspection and test methods . 9
5 Quality management system . 20
5.1 Product qualification . 20
5.2 Acceptance conditions . 20
5.2.1 Inspections and tests to be carried out by the manufacturer . 20
5.2.2 User’s quality control . 20
6 Packaging . 21
7 Certificate of conformity . 21
Annex A (normative) Verification of permissible and ultimate static loads (C , C ) . 26
s a
A.1 Permissible radial loads (C ) . 26
s
A.1.1 Principle . 26
A.1.2 Method . 26
A.2 Ultimate radial static load . 26
A.2.1 Principle . 26
A.2.2 Method . 26
A.3 Permissible axial static load (C ) . 27
a
A.3.1 Principle . 27
A.3.2 Method . 27
A.4 Ultimate axial static load . 27
A.4.1 Principle . 27
A.4.2 Method . 27
Annex B (normative) Verification of dynamic radial loads (C ) . 30
dyn
B.1 Principle . 30
B.2 Verification . 31
B.2.1 High and medium surface pressure tests . 31
B.2.2 Low surface pressure tests . 31
B.2.3 Test sequence . 32
Annex C (normative) Fluids — Essential characteristics . 37
C.1 Cleaning agent . 37
C.2 De-icing and anti-icing fluids . 37
C.3 Mineral fluid for hydraulic transmission . 37
C.4 Phosphate ester hydraulic fluid . 37
C.5 Fuel for turbine engine . 37
C.6 Silicon fluid Wacker AK 10 . 37
C.7 Salt laden atmosphere . 38
Annex D (normative) Peeling strength and bond integrity. 39
D.1 Peeling strength . 39
D.1.1 Principle . 39
D.1.2 Method . 39
D.2 Bond integrity . 40
D.2.1 Peelable liner types . 40
D.2.2 Non-peelable liner types . 40
Annex E (normative) Friction coefficient . 41
Bibliography . 42
European foreword
This document (EN 4854-3:2019) has been prepared by the Aerospace and Defence Industries
Association of Europe - Standardization (ASD-STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this Standard has
received the approval of the National Associations and the Official Services of the member countries of
ASD, prior to its presentation to CEN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by April 2020, and conflicting national standards shall be
withdrawn at the latest by April 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
1 Scope
This European Standard specifies the required characteristics, inspection and test methods,
qualification and acceptance conditions for spherical plain bearings in corrosion resisting steel with
self-lubricating liner, low starting torque and low friction coefficient, elevated duty cycles under low
oscillations at different operating conditions.
This standard applies whenever referenced.
These self-lubricating spherical plain bearings are intended for use in fixed or moving parts of the
aircraft structure especially for control mechanism and operating systems. The bearings are designed
subjected under low dynamic radial loads and slow rotations in the temperature range of
−55 °C to 120 °C (−67 °F to 248 °F).
The liner may be of a fabric or composite material bonded to the inside diameter of the outer ring or in
a composite material moulded into a pre-formed cavity between the inner and outer rings.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 4854-1, Aerospace series — Bearing, spherical plain, in corrosion resisting steel with self-lubricating
...
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