1、BRITISH STANDARD AEROSPACE SERIES BS EN 3048:2001 Bearings, spherical plain in corrosion resisting steel with self - lubricating liner Light series Elevated load at ambient temperature Dimensions and loads The European Standard EN 3048:2001 has the status of a British Standard ICS 21.100.01.49.025.1
2、0 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 3048:2001 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 9 Novem
3、ber 2001 BSI 9 November 2001 ISBN 0 580 37220 0 National foreword This British Standard is the official English language version of EN 3048:2001. It supersedes BS EN 3048:1992 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee ACE/12/1, Aerospace Fastene
4、r, fastening systems, details and parts (International), which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement these international or European publications may be f
5、ound in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standa
6、rds are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for cha
7、nge, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright dat
8、e displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN3048 October2001 ICS49.035 SupersedesEN3048:1992 Englishversion AerospaceseriesBearings,sphericalplainincorrosion resis
9、tingsteelwithselflubricatinglinerLightseriesElevated loadatambienttemperatureDimensionsandloads SriearospatialeRotulesenacierrsistantla corrosiongarnitureautolubrifianteSrielgrecharge levetempratureambianteDimensionsetcharges LuftundRaumfahrtGelenklageraus korrosionsbestndigemStahlmitselbstschmieren
10、der BeschichtungLeichteReiheHoheBelastungbei RaumtemperaturMaeundBelastungen ThisEuropeanStandardwasapprovedbyCENon29December2000. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration
11、.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitso
12、wnlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EURO
13、PEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2001CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN3048:2001EEN3048:2001(E) 2 Foreword ThisEuropeanStandardhasbee
14、npreparedbytheEuropeanAssociationofAerospaceManufacturers (AECMA). AfterinquiriesandvotescarriedoutinaccordancewiththerulesofthisAssociation,thisStandardhas receivedtheapprovaloftheNationalAssociationsandtheOfficialServicesofthemembercountriesof AECMA,priortoitspresentationtoCEN. ThisEuropeanStandar
15、dshallbegiventhestatusofanationalstandard,eitherbypublicationofanidentical textorbyendorsement,atthelatestbyApril2002,andconflictingnationalstandardsshallbewithdrawnat thelatestbyApril2002. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesarebound
16、toimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark, Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal, Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN3048:2001(E) 3 1 Scope Thisstandardspecifiesthecharacteristicsofsphericalplainbearingsincor
17、rosionresistingsteel,withself lubricatingliner,lightseries,forelevatedloadatambienttemperature,withorwithoutswaginggroove, intendedforuseinthefixedormovingpartsoftheaircraftstructureandcontrolmechanisms. Theyshallbeusedinthetemperaturerange55 Cto+163 C. 2 Normativereferences ThisEuropeanStandardinco
18、rporatesbydatedorundatedreferenceprovisionsfromotherpublications. Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelisted hereafter.Fordatedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplyto thisEuropeanStandardonlywhenincorporatedinitbyame
19、ndmentorrevision.Forundatedreferencesthe latesteditionofthepublicationreferredtoapplies(includingamendments) . ISO11321 RollingbearingsTolerancesPart1:Termsanddefinitions lSO8075 AerospaceSurfacetreatmentofhardenablestainlesssteelparts EN2030 SteelFEPM43HardenedandtemperedBars D 150mmAerospaceseries
20、 1) EN2132 ElectrodepositionofchromiumforengineeringpurposesAerospaceseries 1) EN2424 AerospaceseriesMarkingofaerospaceproducts EN2539 AerospaceseriesSteelFEPM3801(X5CrNiCu174)AirmeltedSolutiontreated andprecipitationtreatedBar aor D 200mm Rm 965MPa 2) EN 2755 Aerospaceseries Bearings,sphericalplain
21、incorrosionresistingsteelwith selflubricatinglinerElevatedloadsatambienttemperatureTechnical specification 2) 3 Symbolsanddefinitions ThetolerancedefinitionsaregiveninlSO11321. dmp = singleplanemeanborediameterdeviation ds = deviationofasingleborediameter Dmp = singleplanemeanoutsidediameterdeviatio
22、n Ds = deviationofasingleoutsidediameter = angleoftiltoftheouterringwithrespecttotheinnerring,thesphericalsurfaceoftheouterringbeing completelyincontactwiththeinnerring 4 Requiredcharacteristics 4.1 Configuration,dimensions,tolerancesandmass Accordingtofigures1and2,andtable1.Thedimensionsareexpresse
23、dinmillimetresandapplyafter surfacetreatment. 4.2 Surfaceroughness 1) PublishedasAECMAStandardatthedateofpublicationofthisstandard 2) PublishedasAECMAPrestandardatthedateofpublicationofthisstandardEN3048:2001(E) 4 Accordingtofigures1and2.Thevaluesareexpressedinmicrometresandapplybeforesurfacetreatme
24、nt. Key a liner Figure1Bearingwithoutswaginggroove,codeSEN3048:2001(E) 5 Key a liner Figure2Bearingwithswaginggrooves,codeREN3048:2001(E) 6 Table1 dBC D Tolerances m d 1 d 2 K l 1 l 2 r 1 r 2 r 3 Mass g/piece Code nom. 0 0,06 0,1 dmp ds Dmp Ds min. +0,1 0 0 0,2 max. +0,1 0m i n . b 0,5 12 12 10 7 22
25、 14,3 20,2 17,5 0,9 11 17 15 24,2 15 a 15 12 9 26 18,7 24 22,3 9 26 17 28,2 17 a 17 14 10 30 0 8 +3 11 0 9 +6 15 21,2 28 25,5 1 0,5 to 0,8 10 40 20 33,2 20 a 20 16 12 35 24,9 33 29,8 0,7 0,2 9 65 25 39,4 25 a 25 20 16 42 30 38,8 36,1 7 115 30 44,4 30 a 30 22 18 47 0 10 +8 19 0 11 +8 19 34,3 43,8 40,
26、8 0,9 1,2 0,6 to 1 6 160 35 35 25 20 55 40,5 51,8 47,6 229 40 40 28 22 62 45 58,8 53,1 315 45 45 32 25 68 51,3 64,8 60,5 460 50 50 35 28 75 0 12 +3 15 0 13 +10 23 58,2 71,8 68 1,4 1,5 0,1 to 0,4 0,8 to 1,2 0,3 7 30 560 a Code1addedtotheendoftheidentityblock b Maximumvaluesfortheuser 4.3 Loadsandstar
27、tingtorques Accordingtotable2 Table2 Permissiblestatic loads d Kennzahl Radial C s Axial a C a Permissibledynamic radialloads 25000cycles Startingtorques kN kN kN Nm 12 46,4 3,7 25,5 15 79,5 8 43,7 17 102,6 10,6 56,4 20 147,4 17 81 0,12to0,8 25 221,7 28,7 110,8 0,25to1 30 285,6 38,2 142,8 35 374,5 4
28、8,7 187,3 0,4to2 40 462,7 60,7 231,3 45 605,8 81,6 302,9 50 768 105,6 384 0,6to2,7 a Thesevaluesapplytobearingswithoutswaginggroove.Forbearingswithswaging grooves,thepushoutloadsmaybesmallerthanthesevalues.EN3048:2001(E) 7 4.4 Materials Innerring:steelaccordingtoEN2030,hardness55HRCto62HRC Outerring
29、:steelaccordingtoEN2539,hardness28HRCto37HRCbeforeswaging Liner:selflubricatinglowfrictionwearresistantmaterialconsistentwiththerequirementsofEN2755 4.5 Surfacetreatmentontheinnerringsolely Seetable3 Table3 Treatment Specification Code Chromiumplatingonthesphericalsurface EN2132, thickness15mto50m P
30、 Passivation ISO8075 T without(neitherchromiumplating,norpassivation) (nocode) 5 Designation EXAMPLE: Descriptionblock Identitiy block BEARING EN3048S 12 PT A 1 Numberofthisstandard Swaginggroovescode(seefigures1und2) Codefordiameter d (siehetable1) Surfacetreatmentcode(see4.5) Technologycode(seetab
31、le4) Dimensionalvarietiescodeforswaginggrooves(seetable1) NOTE:Ifnecessary,thecode I 9005shallbeplacedbetweenthedescriptionblockandtheidentityblock. Table4 Technology Code bondedliner A injectedormouldedliner B bondedlinerorinjectedormouldedliner,atthe manufacturersoption (nocode)EN3048:2001(E) 8 6
32、Marking AccordingtoEN2424,styleA Themarkingpositionisatthemanufacturersoption. Bearingsorderedwithouttechnologycodeshallbedeliveredmarkedwiththecodeoftechnologyused. 7 Technicalspecification AccordingtoEN2755BS EN 3048:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution B
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