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1、TECHNICA1.REPORTISO/TR1281-1editionSecond2021-05Ro1.1.ingbearingsExp1.anatorynotesonISO281一Piqdynamic1.oadratingandbasicrating1.ifeRou1.ementsNotesexp1.icativesurISO281Partie1:Chargesdynamiquesdebaseetdur6enomina1.edebaseReferencenumberISO/TR1281-1.:2021(E)COPYRIGHTPROTECTEDDOCUMENTISO2021岫rkdea/山th
2、UcdOthcnviscjftc三orrtmcehDVBiwixuioiti08phnn11UatiocBhrhotocp)Mng,ptbcatonpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanherequestedfromeitherISOattheaddressbe1.owOr1.sOXSmemberbodyinthecountryoftherequester.%,tft晒Iandonnet8CH-1214*crnicr,GenevaPhone：M1.22749O1.11Pub1.is
3、hedinSwitzerhndContentsForewordivItroductionScopeNormativereferences_._TermsanddefinitionsSymbo1.sGenera1.Basicdynamic1.oadrating6.16.2Genera1.44Basicdynamicradia1.1.oadrating.Cr,forradia1.ba1.1.bearings.-ffi3dcdyii1.tausatia1.1.oabnp!Ttfi1trta(1.otft(Ktba1.1.bearings96.3.2 Thrustba1.1.bearingswithc
4、ontactang1.ea=90c9Basicdynamicaxia1.1.oadrating,Q,forthrustba1.1.bearingswithtwoormorerowsOfhaUsdynamicradia1.1.oadrating.Cr9forradia1.ro1.1.erbearings1013139I“”.三*”*-“-.“-*-*-Basicdynamicaxia1.1.oadrating.Ciforsing1.erowthrustro1.1.erbearings6.6.1 Thrustro1.1.erbearingswithcontacta90o一6.799&dy翻RSF蝴
5、回通P6&的百出怖群瞌齐演Withnvoormore13rowsOfIao1.1.eInS-.*.RiVfS(vcekdHprapbrifigbodyIihicrttad6tandrijktf0tartedtaIcommitteehasbeenestab1.ishedhastherighttoberepresentedonthatcommittee.Internationa1.organizations,governmenta1.andnon-governmenta1.,in1.iaisonwithISO,a1.sotakepartinthework.ISOco1.1.aboratesc1.o
6、se1.ywiththee1.ectrotechnica1.standardization.Internationa1.E1.ectrotechnica1.Commission(IEC)ona1.1.mattersofTheproceduresusedtodeve1.opthisdocumentandthoseintendedforitsfurthermaintenanceare蜘硼槛OfISoIEC(三te帆掖帆产%cordancetheeditoria1.ru1.esoftheISO/IECDirectives.Part2(secwww.iso.org/direc1.ives).Mionr
7、igbtsd战丽n施腻飒脚SnSi曲?麻吸咻胸般眈doc映棉频湖H%subjectofanypatentrightsidentifiedduringthedeve1.opmerUW4iouwMM41.beintheIntroductionand/orontheISO1.istofpatentdec1.arationsreceived(seewww.iso.org/pa1.ents).Anytradeusedinthisconstitutenameendorsement.documentisinformationgivenfortheconvenienceofusersanddoesnotFor
8、anexp1.anationofthevo1.untarynatureofstandards,themeaningofISOspecifictermsandPXPTTTTnnTTTmTrPnTnzatoncoiso/foreword.hun1.赫福P奥盛腌和he喂煽商辆需带tion曲雇P干浮到瞬滕思幅Thisratingsand1.ife1.oaddocumentwas.preparedbyTechnica1.Committee1SOTC4,Ro1.1.inffbearings.SubcommitteeSC8,Thissecondeditioncance1.sandrep1.acestheTe
9、chnica1.Corrigendum1(ISOTR1281-1:2008/Cor1:2009)andthefirstedition(ISOTR1281-1:2008),whichhasbeentechnica1.1.yrevised.Themainchangescomparedtothepreriouseditionareasfo1.1.ows:s岫g&k1.M8RKT1.ftAJX(f产Sof缶6T1.Ry1.281或D的行ocEiW2008hasbeende1.eted,thisThederivationoftheo1.dFormu1.ae(29)and(46)Formu1.ae(28)
10、and(45)inthiseditionhasbeencorrected.TypingerrorshavebeencorrectedinFormu1.ae(30)and(31)andinthederivationofthefactor丫3.A1.istofa1.1.partsintheISO/TR1281seriescanbefoundOntheISowebsite.Ap1.ete1.istingofthesebodiescanbefoundatvrww.iso.orgmembers.htm1.IntroductionISO/R281:1962IoadNationa1.Standardizin
11、gbearingsAssociationsp1.ace(ISA).WhenISAConfCrCnCC1.aStInternationa1.Federationofstandards.basicdefinitions1.oadcontained(nowessencebasicdynamic281：2007ratingtheconceptsdiscussionstheinitiativeofandAnti-FrictionStandardsManufacturersAssociation(AFBMA),NewYork,basis,bearings.bodyforSwedenpresented,inFebruary1950,afirstproposa1.toISO,1.oadratingofmodifiedproposa1.ro1.1.erbearingba1.1.bearingsstandards,asproposa1.memberbodyro1.1.erbearings.submttedaservingasamajorbasisforthesectionsregardingro1.1.erbearingrating.-49ISO28
