JIS B 2710-4-2021.docx

JISB2710-4=-(JSMA/JSA)1.eafspringsPart4:SpecificationofproductsICS21.160Refer«nc¢number:JISB2710*4:2021(E)JISJAPANESEINDUSTRIA1.STANDARDTrans1.atedandPub1.ishedbyJapaneseStandardsAssiat>nDateofEstab1.ishment20080320DateofRevision-2021-1.1.22DateofPub1.icNoticeinOfficia1.Gazette-20211.1.22Investigatedby：JapaneseIndustria1.StandardsCommitteeStandardsHoardforISOareaJ1.SB27104:202bFirstEng1.isheditionpub1.ishedin2022-03Trans1.atedandpub1.ishedby:JapaneseStandardsAssociationMiUMTBUiIdi呷3-13-12,MMMinawkU,Tokyo,108-0073JAPAX!ntheCVentofanydoubtsarisingastothecontents,theorigina1.J1.Sistobethefina1.authority.©JSA2022A1.1.righMrv*rvM.1.nkMo<herwt*specified,nopartQfth1.*pub1.k*4tk>nnuybereproducedaru1.UUedinanyf<morbyany11vjm,e1.ectronsorInedUnka1.IIKhJdMgphotocopyingandmk*rofi1.m,withoutPCrmiX1.CtonmwritingfromthrpubUchc.HNPrintedInRpanContentsPageIntroduction11 Scope12 Normativereferences13 Termsanddefinitions24 Symbo1.s35 Springtypes46 Materia1.andshape76.1 Stee1.gradeandsize76.2 Crosssectionoff1.atbar76.3 Hardness87 Basicdimensionsandtheirto1.erances87.1 ExpressionofbasicdimenRio11R87.2 Typesofto1.erance97.3 To1.erancesonstraightspanandfixedha1.fstraightspan97.4 To1.erancesonfixedspan,1.engthofairRpringsideandcamberorheightoftrai1.ing1.eaf108 Performance118.1 Genera1.118.2 To1.erancesonspringcharacteristics119 Shapesanddimensionsofeachpartofspring129.1 Curvatureofroundedgeof1.eaf129.2 Centreho1.e129.3 1.eafendshape139.4 Eye149.5 Second1.eafwrapper169.6 Assemb1.edwidth181234567oso.sssSS11111111Parte,20Meta1.bush20Centrebo1.t21C1.ip23C1.ipbo1.t24C1.ippipe2-">Si1.encer26Rivet26(i)FOfCWOrdThisJapaneseIndustria1.StandardhasbeenrevisedbytheMinisterofEconomy,TradeandIndustrythroughde1.iberationsatthe«JapaneseItrduf1.tria1.StandardsCommitteeastheresu1.tofproposa1.forrevisionofJapaneseIndustria1.StandardsubmittedbyJapanSpringManufacturersASSoCiatiOn(JSMA)/JapaneseStandardsAssociation(JS)withadraftbeingattached,basedontheprovisionofArtic1.e12.paragraph(1)oftheIndustria1.Standardizationctapp1.iedmutatismutandispursuanttotheprovisionofArtic1.e16ofthesaidct.Thiseditionrep1.acesthepreviousedition(JISB271Q¼:2008).whichhasbeentechnica1.1.yrevised.ThisJISdocumentisprotectedbytheCopyrightAct.Attentionisdrawntothepossibi1.itythatsomepartsofthisStandardmayn11ictwithpatentrights,pub1.ishedpatentapp1.icationoruti1.itymode1.rights.There1.evantMinisterandtheJapaneseIndustria1.StandardsCommitteearenotresponsib1.eforidentifyinganyofsuchpatentrights,pub1.ishedpatentapp1.icationoruti1.itymode1.rights.JISB2710seriesconsistsofthefo1.1.owing4partsunderthegenera1.tit1.e1.eafsprings:Part 1 Vocabu1.aryPart 2 DesignmethodPart 3 MethodofmeasuringandtestingPart 4 Specificationofproducts(iii):BIank1.1.eafspringsPart4:SpecificationofproductsIntroductionThisJapaneseIndustria1.StandardhasbeenpreparedbasedonISO18137:2015.Edition1,withsomemodificationsofthetechnica1.contents.Thevertica1.1.inesonbothsidesanddottedunder1.inesindicatechangesfromthecorrespondingInternationa1.Standard.1.istofmodificationswiththeexp1.anationsisgiveninAnnexJA.1 ScopeThisStandardprovidestheproductspecificationsofthe1.eafspringsmain1.yusedforautomobi1.es,rgihyayro1.1.inggtocksandindustria1.machines.NOTETheInternationa1.StandardcorrespondingtothisStandardandthesymbo1.ofdegreeofcorrespondenceareasfo1.1.ows.ISO18137:20151.eafSPringSTechnica1.speci11cations(MOD)Inaddition,symbo1.swhichdenotethedegreeofcorrespondenceinthecontentsbetweenthere1.evantInternationa1.StandardandJISareIDTGdentica1.),MOD(modified),andNEQ(notequiva1.ent)accordingtoISO/IECGuide21-1.2 NormativereferencesPartora1.)oftheprovisionsofthefo1.1.owingstandards,throughreferenceinthistext,constitutePrOViHiOnSofthisStandard.Themostrecenteditionsofthestandards(inc1.udingamendments)indicatedbe1.owsha1.1.beapp1.ied.JISB0103SpringsVocabu1.aryNOTENormativereferenceinthecorrespondingInternationa1.StandardISO26909SpringsVocabu1.aryJISB0156SpringsSymbo1.sNOTENormativereferenceinthecorrespondingInternationa1.Standard:ISO16249SpringsSymbo1.sJISB02052ISOgenera!purposemetricscrewthreadsPart2:Genera1.p1.anJISB02092ISOgenera!purposemetricscrewthreadsTo1.erancesPart21.unitsofsizesforgenera1.purposeexterna1.andinterna1.screwthreadsMediumqua1.ityJISB0401-2Geometrica1.productspecifications(GPS)ISOcodesystemforto1.eranceson1.inearsizesPart2:Tab1.esofstandardto1.erancec1.assesand1.imitdeviationsforho1.esandshaftsJISB1021To1.erancesforfastenersPart1Bo1.ts,SCrCWSStUdSandnuts一2B27104：2O21ProductgradesA.BandCJ1.SB1051Mechanica1.propertiesoffastenersmadeofcarbonstee1.anda1.1.oystee1.Bo1.ts,screwsandstudswithspecifiedpropertyc1.assesCoaethreadandfinepitchthreadJISB1181JISB1213HexagonnutsandhexagonthinnutsCo1.dhcadedrivetsJISB27101.1.eafSPringSPart1:Vocabu1.aryJISB271021.eafspringsPart2:DeSignmethodJISB271O31.eafspringsPart3MethodofmeasuringandtestingJISB2711SpringsShotpeeningNOTENormativereferenceinthecorrespondingInternationa1.Standard:ISO269101Springs-Shotpeening-Part1:Genera1.proceduresJISG3101JISG3131JISG3141JISG3302JISG3445J1.SG3505Ro1.1.edstee1.sforgenera1.structureHot-ro1.1.edmi1.dstee1.p1.ates,sheetandstripCo1.d-reducedcarbonstee1.sheetandstripHotdipzincucoatedstee1.sheetandstripCarbonstee1.tubesformachinestructure1.owcarbonstee1.wirerodsJISG3507-1CarbonSteeISforco1.dheadingPart1WirerodsJISG4051Carbonstee1.sformachinestructura1.useJISG40531.owa1.1.oyedstee1.sformachinestructura1.useJISG4801SPringSteeISNOTE1NormativereferenceinthecorrespondingInternationa1.Standard:ISO68314Heatatreatab1.estee1.s,a1.1.oystee1.sandfree-cuttingstee1.sPartH:Hotro1.iedstee1.sforquenchedandtemperedspringsNOTE2TheJIScitedabovedoesnotcontainthehardnessrequirementsapeci-edintheISOStandardgiveninNOTE1.JISZ8401ISO683-14RoundingofnumbersHeat-treatab1.estee1.s,a1.1.oystee1.sandfree-cuttingstee1.s-Part14Hot-ro1.1.edstee1.sforquenchedandtemperedspringsISO18265Meta1.1.icmateria1.sConversionofhardnessva1.ues3TermsanddefinitionsForthepurposeofthisStandard,thetermsanddefinitionsgiveninJISB0103andJISB27101.app1.y.4Symbo1.sForthepurposeofthisStandard,thesymbo1.sanddefinitionsgiveninTab1.e1.JISB0156andJISB2710-2app1.y.Tab1.e1Symbo1.sanddefinitionsSymbo1.DefinitionUnitwidthoroutsidediameterofsi1.encerattachmentpartmm餐1.engthofsi1.encerattachmentpartmmBwidthofeyeors1.idemmAassemb1.edWickhmmbep1.atewidthofc1.ipmm玩edgep1.atowidthofpara1.1.e1.cuttingordiamondcutendmm玩widthoroutsidediameterofsi1.encermm乐widthofcentrespacermmDuinsidediameterofmeta1.bushmmDinsidediameterofeyemmDooutsidediameterOfey。mmdnomina1.diameterofextoma)nterna1.threadofbo1.tsmm4centreho1.ediametermm41.ongdiameterofe1.1.ipticho1.emmshortdiameterofe1.1.ipticho1.ommd"ho1.ediameterofc1.ipbo1.tmm&ho1.odiameterofcentrespacermm4diameterofcentrebo1.theadmmdpinsidediameterofc1.ippipemm小ho1.ediameterofrivetmmdiameterofcy1.indrica1.partofbo1.tsmmHspringheightmmH"heightofattachmentcentrepositionofairsp11ng,(seeFigureo)mmhvertica1.dimensionofupturned3/4typoorBer1.ineye5/8typemm.distancebetweenc1.ipendandc1.ipbo1.tho1.emmcc1.ipheightmm1heightofsi1.encerattachmentpartmmkheadheightofbo1.tsmm1.1.ongitudina1.dimensionofupturned3/4typeorBer1.ineye8typemm“1.engthunderheadofbo1.tsmmUthread1.engthofbo1.tsmm1.r1.engthofcentrespacermmIa1.engthofsi1.encermm%Iengthofc1.ippipemmItUdistancebetweenthecontraho1.oandthecentreofattachmentho1.e1oftrai1.ing1.eaf(seeFigure4andFigure5)mm2distancebetweenthecentreofattachmentho1.e1andthecentreofattachmentho1.e2oftrai1.ing1.eafUeeRgure4andFigure5)mmdixtan<rrb<<weenthecentreofattachmentho1.e2andthe1.eafendoftrai1.ing1.eaf(ccFigure4andFigure5)mmm1gapbetweeneyeandsecond1.eafwrapp<kr.1.ongitudina1.mmTab1.e21(conc1.uded)PaOHeightk6I4.45.RadiusunderrheadApprox.0.5SurfacetreatmentGnformative)三,Ep-FeyZn5CM2orEpF(Zn2C2(booJISH8610)Strrngthandmateria1.Strengthc1.a*Mification4.86.8Materia1.Gnformativc)SWCH12AGeeJISO3507-2)S20CorS45CGweJISG4051)HeatUvi1.tnuntW1.t!WUtHardrw(informative)(seoJISZ2245)71HRBto95HRB89HRBto99HRBNoteSurfacetreatmentmaybeomittedifsoagreedbetweenthepartiesconcerned.10.5C1.ippipeThemateria1.,shapeanddimensionsofac1.ippipesha1.1.beasgiveninTab1.e22.Ifthec1.ippipeisusedforotherpurposesthanpreventingdeformationof1.eaves,othermateria1.,shapeanddimensionsmaybeagreedbetweenthepartiesncerne<1.Tab1.e22Materia1.,shapeanddimensionsofC1.iPpipeUnit：mmNomina1.d<*tmation81012Innidediameterdv>9.011.014.01>1.vrancoonin«id«(diameter1.2-0.6Wa1.1.th>cknes。1.0I1.21.2I1.61.2I1.6To1.eranceonwa1.1.thickneaaH),21.entcth1.fTbthenorentInunTo1.eranceon1.ength>1,50Surfac<*troutmon1.(informative)川Rp-FvZZnWeM2orRpFvZn1.2C2j,orcatin(w*<J1.SH8610)MAteriaISPHCorSPHDofJISG3131.SPCCorSPCDofJISO3141.orSTKMofJISG3445Noto"SurfaceIrOattnommaybeOmittUdifsoagreedbetweenthepartiesconcerned.Tab1.e24Materia1.,shapeanddimensionsofrivetUnit：mmNomina1.diameter6810I13I16ShapeRoundheadrivetofJISB12131.engthunderheadTbthenearest1mmMateria1.SWRCHSRorSWRCH1.oRofJISG3507-1SurfacetroatmontGnfbrmative)Ep-FoZZn5CM2orEpFcZn1.2C2(booJISH81.0)NoteajSurfacetreatmentmaybeomittedifsoagreedbetweenthepartiesconcerned.10.8CentrespacerThemateria1.,shapeanddimensionsofacentrespacersha1.1.beasgiveninTab1.e25.Tab1.e25Materia1.,shapeanddimensionsofcentrespacerUnit：mmItemDimenHionstandmateria1.Width¼(1.eafwidth)-51.ength1.cSpecifiedtothenear<t10mmbyagreementbetweenthePi1.rticoncernedThickneM1.0Ho1.edediameter(Centrebo1.tdi»metcr)÷0.511.cran?onho1.ediameter+0.50Materia1.Po1.yaceta1.orhofdpzmccoatodstee1.hoetofJISG330211 Othernotesonmanufacturing1.eafspringsmaybegivenshotpeening,coating,andpresettingafterheattreatment.Thedetai1.softheseprocessesandre1.atednotesareasfo1.1.ows.Conditionsusedfortheseprocessessha1.1.beagreedbetweenthepartiesconcerned.a) SurfaceconditionThespringsurfacesha1.1.befreefromroughness,f1.aws,decarburization,andotherdefectsthatmaybedetrimenta1.toservice.b) ShotpeeningThe1.eafspringsha1.1.begivenordinarj,peeningorstresspeeningspecifiedinJISB2711beforebeingassemb1.ed.Thetrai1.ing1.eavesinparticu1.araregenera1.1.ygivenordinarypeening,eitheron1.yontheuppersurfaceoronbothsurfaces(firstonthe1.owersurface,thenontheuppersurface)ofthe1.eafdependingontheserviceconditionusingthepeeningconditionsagreedbetweenthepartiesconcerned.c) CoatingThe1.eafspringsha1.1.begivenacoatingafterreceivingshotpeningandbeforebeingassemb1.ed.Theatingmaybeeitheranundercoatingapp1.iedonindividua1.1.eavesorafinishatingapp1.iedontheassemb1.edspring,dependingontheagreementbetweenthepartiesconcerned.d) PresettingThe1.eafspringsha1.1.gothroughpresettingafterbeingassemb1.ed,norma1.1.ybeforeating.Thepresettingisnotperformedontrai1.ing1.eaves.12 InspectionandreportThe1.eafspringsha1.1.besubjecttothefo1.1.owinginspectionandtheresu1.tsoftheinspectionsha1.1.bereported.Thesamp1.inginspectionp1.antobeapp1.iedfora1.otinspection.ifapp1.icab1.e,sha1.1.besubjecttotheagreementbetweenthepartiesconcerned.a) Genera1.inspectionitemsThefo1.1.owingisa1.istofgenera1.inspectionitemsfor1.eafsprings.A1.eafspringisnorma1.1.yinspectedonthoseitemsinthe1.istthatarespecifiedinthedesigndrawngorspecifiedbytheuser.Inspectionofotheritemsmaybeperformeduponagreementbetweenthepartiesconcerned.Testmethodsaredetai1.edinJISB27103.Thedimensionsandto1.erancesnotstatedinthedrawingsha1.1.beinaccordancewithC1.ause9.1) Dimensions2) Hardness3) Surfacecondition4) Shotpeeningb) PerformancetestitemsThefo1.1.owingisa1.istofperformanceteatitemsfor1.eafsprings.A1.eafspringisnorma1.1.ytestedonthoseitemsinthe1.istthatarespecifiedbytheuser.Othertestsmaybeperformeduponagreementbetweenthepartiesconcerned.Testmethodsaredetai1.edinJISB27103.1) Springcharacteristicstest2) Dynamicspringcharacteristicstest3) Wind-upcharacteristicstest4) Vertica1.fatiguestrengthtest5) Eyefatiguetest6) CorrosionfatiguetestBib1.iographyI1.JJISG3507-2Carbonstee1.sforco1.dheadingPart2:Wires1.2JISH8610E1.ectrop1.atedcoatingsofzinconironorstee1.(3JISZ2245Rockwe1.1.hardnesstestTestmethod4JSOC601:2015Automotiveparts1.eafspringsAnnexJA(informative)Comparisontab1.ebetweenJISandcorrespondingInternationa1.StandardJISB27164ISO181372015,(MOD)a)No.ofc1.ause(JiS)b)No.ofc1.ause(cornxpondingTnwma"tioru1.Standard)c)CiaesiA*cationbydauMed)Detai1.andjusufcationoftechnica1.deviatione)Futuremeasuresforthetechnica1.deviationI1.AdditionAddtherai1.wayroi1.ingstocksandindustria1.machinestothe*op。ofappUction>iof1。Af>rin()iba><ionth<»1.oca1.11pcd>iinJapan.Modificationtomeetthe1.oca1.nocdninJapan.NoPrUPaNa1.WiHbemad。toISO22AddkionAddstandardsre1.atedtopartebasedonthe1.(1.needsinJapan.Modificationtomeetthe1.oca1.needinJapan.NoProP(Ma1.wi1.1.bemadetoISO44/XdditionAddsymbo1.icof叩门nPartabedonthe1.oca1.rw<dinJapan.ModiftcaUontomeetthe1.oca1.n<edinJapan.Noproposa1.wi1.1.bemadetoISO.65De1.etionDe1.etesomeofthespringtypogivenmISOu>4wwon1.yIhvmostcommononvu.Notechnica1.deviation.62Addi1.iDnAddtheCrO舐sectionoff1.atbearfortrai1.ing1.eaves.Modcationtomottho1.oca1.n(¼dinJapan.NoPrOPaea1.wi1.1.bemadetoISO.&36.4.1/Xddi1.ion.ddTubk2(Hardneaeof1.eafid1.erquen*hingandIemPCring)hawedonthe1.oca1.nerd>iinJapan.Modification1.omoottheIocu1.needs!inJapan.NOproposa1.wi1.1.bemadetoISO.7.1.AdditionAddfixedha1.fspan,freeheightorcamberunderno1.oad,1.engthofairMpnngMidcandhi,ghtofutt*chmc,ntcvn1.11*p<Mitionofairspringtothebe«rdimcnionMofatrai1.ing：1.eaf.ModiAcationtomeetthe1.oca1.ncedinJapan.NoPrDPoiiaIW1.nbemadetoISO7.2一AddkiOnAddtheexp1.anationforadditionofTpoJto1.erancesin7.&Notechnica1.deviation.a)No.ofdauip(Jra)b)No.ofCIRu1.i<(correspondingInternationa1.Standard)C)C1.a«Afi*cationb>,dause¢0Detai1.anduticatonoftechnica1.viAtione)FuturenwaxuroMfortheSChniaddoviation7.3a2.2K2.39.19.4.19.4.6966.2.16.3.26316.2.66.2.4623622AdditionAddTypvJ1.o!omncv*bawdonthe1.oca1.need与inJapan.ModiAciitiontomootthe1.oca1.needninJapanNoproposa1.wi1.1.bemadetoISO.7.4AdditionAddto1.erancesfortrai1.ing1.eaverbawdonthe1.oca1.needBinJapan.Modificationtomeetthe1.oca1.needsinJa