1、JISJAPANESEINDUSTRIA1.STANDARDTrans1.atedandPub1.ishedbyJapaneseStandardsAssociationJISB1864-(JBMASA)Synchronousbe1.tdrivesBe1.tsandpu1.1.eysICS21.220.10；43.060.10Refeenconumber:JISB1864:2021(E)DateofEstab1.ishment2021.0222DateofPub1.icNoticeinOfficia1.Gazette.20210222InvestigatedbyJaPaneSeIndustria
2、1.StandardsCommitteeStandardsBoardforISOareaJ1.SB1864:2O2bFirstEng1.isheditionpub1.ishedin2022X)4Trans1.atedandpub1.ishedby:JapaneseStandardsAssociationMiUMTBUiIdi呷3-13-12,MMMinawkU,Tokyo,108-0073JAPAX!ntheCVentofanydoubtsarisingastothecontents,theorigina1.J1.Sistobethefina1.authority.JSA2022A1.1.ri
3、ghMrv*rvM.1.nkMonnuybereproducedaru1.UUedinanyfapcoida1.profi1.eAZA一BZBCurvi1.inearprofi1.eHZHYHRZRYRSZSYS5 Be1.tdesignationbe1.tisdesignatedbythecombinationofthenumberofteeth,toothpitch,basictthprofi1.eandnomina1.width.EAChnomina1.be1.!、jthhCorreRPondingtoFeSDeCtiVereferenceVaIUe8tecifiedasa融律ndard
4、be1.t.Wj1.dth.aha1.1.be.in.aapgance.丽th.Tabk.2,.and.6hc.BIQminaI.be1.twidths.Qrreending。.如k.)yid.thHha1.1.be.我gn.the.pq.r.tj照canegme.d：Examp1.e80Z19I-nomina1.be1.twidthbasictthprofi1.etoothpitchnumberofteethofbe1.tTab1.e2StandardwidthsNomina1.widthReferenceva1.ue(mm)1312.71615.91919.12222.0225.4282
5、8.03030.03232.03434.03838.06 Be1.tstructureThebe1.tsha1.1.beofend1.essconfigurationhavingsuchaCroe8-8CCtionaIstructureasshowninFigure1.Pitch1.inekickingCorewireBaCkrubberTipRootFabric/ToothrubberfacingFigure1CroBS-Boctiona1.structureofsynchronousbe1.t7 Be1.tprofi1.ea/dimensionBandto1.erances7.1 Be1.
6、tprofi1.esanddimenaionsZAandZBTheprofi1.esandnomina1.dimensionsOfTyPeSZandZBsha1.1.beasgiveninTab1.e3.7.2 Be1.tprofi1.esanddimensionsZHandYHTheprofi1.esandnomina1.dimensionsOfTyPeSZHandYHsha1.1.beasgiveninTab1.e4.Unit：mmItemSymbo1.Nomina1.dimensionZHYHTbothpitchp、9.5258.0HeightA5.55.2Rootradiuhrt0.7
7、60.64TbothheightK3.503.04TbothradiusR2.452.11Vertica1.OfrSUtY1.050.93RootradiuhdistanceS,3.272.847.3 Be1.tprofi1.esanddimensionsZRandYRTheprofi1.esandnomina1.dimensionsofTypesZRandYRsha1.1.beasgiveninTab1.e5.Tab1.e5Profi1.esandnomina1.dimensionsofZRandYRDimennionscinmi1.1.imctrej*AngMmdegreesItemSym
8、bo1.Nomina1.cimcntionZRYRTbothpitchPB9.5258.000Tbothang1.e*23230Height.5.4.1.RootradiusG1.00.8Tbothheight3.22.8WdthattoothrootS5.55.3Tbothformparameterk1.2281.692NUaAnng1.cmadebythetoothcentre1.ineandttothecurveconstitutingthematingf1.ankapointofthecurveandthertradiu.ictangent1.inethocontact7.4 Be1.
9、tprofi1.esanddimenionZSandYSTheprofi1.esandnomina1.dimensionsOfTyPeSZSandYSsha1.1.beasgiwninTab1.e6.Tab1.e6Profi1.eeandnomina1.dimensionsofZSandYSUnit：mmItemSymbo1.Nomina1.dimensionZSYSTbothpitchPI9.5258.0Height.5.75.2Rootradiusr0.950.80r11pradiusG0.950.80TbothheightA13.532.95WidthatUothrootS6.195.2
10、0TbothradiumR6.195.20Vertica1.offsetY0.6860.6867.5 To1.eranceeforbe1.tpitch1.engthandcentredistancevariationTheto1.erancesfor1.engthwhichdiffersdependingonthebe1.tpitch1.engthandthecentredistancevariationsha1.1.bemeasuredinaccordanceWithCp1.ywithTab1.e7.Thebe1.tpitch1.engthsha1.1.beasagreedbetweenth
11、epartiesconcerned.8.1.4.2ZHandYHTheprofi1.esanddimensionsofgroovec1.earanceforZHandYHsha1.1.beasgiveninTab1.e11.Tab1.e11Profi1.esanddimensionsofgroovec1.earanceforZHandYHUnit：mmIyPeP1.DGroovec1.earanceRadiusatRo(XhrootRadiusattoothtipRadiusattoothf1.sinkBottomdpthofgrooveaaMin.CaiMin.n.W.05G士0.05n0.
12、0.05ZH0.6860.340.112.780.89一了3.61YH0.6860.300.112.220.693.453.16NOtCThedimensionisnotu&cdforthegroovec1.earanceofZHprofi1.e.10 Pu1.1.eydesignationThepu1.1.eydesignationsha1.1.bethecombinationoftheSymbO1.“Pindicatingapu1.1.ey,numberofteeth,grvepitch,basictoothpro1.eofbe1.tandthenomina1.widthofbe1.t.T
13、henomina1.widthofbe1.ttobeusedsha1.1.beasgiveninTab1.e2.Examp1.eP10ZA19nomina1.widthofbe1.ttobeusedbasictoothprofi1.eofbe1.ttoothpitchnumberofpu1.1.eyteethsymbo1.indicatingpu1.1.ey11 Profi1.esanddimensionsofpu1.1.eytoothc1.earance11.1 ZAandZBThegeneratingtoo1.rackdimensionsandto1.erancesforZandZBsha
14、1.1.bemeasuredbythemethodspecifiedin13.2.andsatisfytherequirementsgiveninTab1.e14.一2。21(I)RvquiromvnUinJIS(II)Internationa1.Standardnumber(III)RvquiromenuinIntpma1.ionA1.Standard(IV)C1.aiAcationanddotaikoftechnica1.deviationtw1.wconJISandthInternationa1.Standardbyc1.ause(V)JuiitiAcauonforthetechnica
15、1.viatonandfuturemcMUfwNo.andtit1.eofc1.auseContentNo.ofc1.auseContentQacaationbydaimoDetai1.oftechnica1.sions.notanthebe1.tdmcruio11A/XdditionAdd1.hc11quir11untforvertica1.offsetY.ThOdpfiniUonofP1.DdvHribedinISOwincorrect.InthisStandard,itisMpaciAedanY.7.5Tb1.eranceeforbe1.tpitch1.engthandcentrei1.
16、ancvvariation6.6A1.moatidentica1.withJISAdditionAddtherecfuiremenuforcentreditanoevariation.AdditiontomootrrentSfituaiioni*inJapan.Underubmiuonof1.hcprpou1.toISO7.6/11!(11rxPiforbe1.twidthand1.atera1.runout661.mo*1.K1.PnUCR1.withJ1.S.AdditionAddthequirvmrntforU1.erancefor1.atera1.runout.dtntom.Wi1.1
17、beProPUIiadtoISOR1.3MgM1.ringmethod7.3AdditionAddca1.cu1.ationformu1.ae.AdditiontometcurrentsituationsinJapan.Theproposa1.haabensubmittediISO.R1.4.1Z1.AundZB7.4A1.moeS1.identica1.WithJISA1.tprutionA1.terthoNymbob1.Symbo1.*ara1.ienedtoCOnfbrmto1.hiMvxpeufi*dinJISB1869PROTEeTKDBYCoPYR1.GHT(I)Rvquirom
18、vnUinJIS(II)Internationa1.Standardnumber(III)RvquiromenuinIntpma1.ionA1.Standard(IV)C1.aiAcationanddotaikoftechnica1.deviationtw1.wconJISandthInternationa1.Standardbyc1.ause(V)JuiitiAcauonforthetechnica1.viatonandfuturemcMUfwNo.andtit1.eofc1.auseContentNo.ofc1.auseContentQacaationbyc1.auoDetai1.ofte
19、chnica1.dnUca1.Wi1.hJISAkonuionDvktonumberofUuth*fromthtab1.e.UrUweVmryBvcaum*theexp1.anationia1.soinFure2.K1.4.4ZSandYS7.41.moik1.entica1.WithJ1.SiterationA1.tertheaymb1.Symbo1.sarea1.teredtonformtoIhDBoSPeCifkd:nJISB1869K3MeaMurvmvntofbe1.twidthAddiIiOnAddth。aspvdAcaUonofbe1.twidthmeasurement.Addi
20、tionUJmukthecontentUndcrf1.UndabIe.CorrStideringtheconvenienceoftheuser.Thepropo1.ha*bwnMubmi1.tedtoISOI1.PrOfi1.Manddimcn-aionaofpu1.1.oytoothdoaranco1.1.1.ZAjmdZB1.1.1.A1.moiidvntictt1.mthJIS/X1.torAtion1.trIhOIiyTnbaU.Symbo1.sarAhorVdtoconformtothosespecifiedinJISB1869AdC1.iIiOnAddNotetoTab1.e14.
21、AdditiontomakethecontentUnderatandabh,con-SiidcnngIhRconvenienceoftheup.W1.1.beproposedtoISO.11.2ZHandYH11.2A1.mostKUca1.WiihJ1.S/iteration1.trthesymbd.Symbo1.sarea1.teredtoconformtothosespecifiedinJISB1868.PRoTECTEDBYCopYR-GHT32B1864:2。21(I)RvquiromvnUinJIS(II)Internationa1.Standardnumber(III)Rvqui
22、romenuinIntpma1.ionA1.Standard(IV)C1.aiAcationanddotaikoftechnica1.deviationtw1.wconJISandthContentNo.ofc1.auseContentQacaationbyc1.auoDetai1.oftechnica1.,viaton11PrOn1.Nanddimenamon*ofpu1.1.eytoothc1.earance(conc1.uded)AdditionAddNotetoTab1.e15.AdditiontomakethecontentUnderMgnckb1。，consideringtheco
23、nvenienceoftheuer.Wi1.1.beproPOaRd1.oISO.H.3ZRandYR11.3Mmotidentica1.M1.hJ1.S.AkerationA1.tertheaymbd.Symbo1.earea1.teredtoconformtothosepecfkdnJISB189AddiiicjnAddthervquirerw.*nuoftoothang1.p2andNototoTab1.e16.AdditionSmakethecontentunderUndabh.consideringtheconvenienceoftheuier.Wi1.1.bepro-P(MCdto
24、ISO.1.1.4ZSndYS1.1.4AImOedMien1.ica1.WithJ1.S.X1.tcrutionA1.1.orthe*ymbuh.SyTnbQ1.aiareOhCrVdtonfbrmIothou0.1bspecifiedinTabk17.Theva1.uwas0.1inD1.SforrvvisededitionofISO.butwachangedto0.01byrusukeinthepub-IiHhcdverRonWi1.1.contact190secretariataboutthecorrection-PROTECTKDBYCoPYRIGHT(I)RvquiromvnUin
25、JIS(II)Internationa1.Standardnumber(III)RvquiromenuinIntpma1.ionA1.Standard(IV)C1.aiAcationanddotaikoftechnica1.deviationtw1.wconJISandthContentNo.ofc1.auseContentQacaationbyc1.auoDetai1.oftechnica1.,viaton12Pu1.kydmriiruand1.okr,ance12.1Deviationsofpi1.chbetweenudjacvnttwthandtota1.doviation12.1AIm
26、OMkdontca1.withJISAdditionAddtheexp1.anationofref-rncovduoufoutmdudrameter.Additiontomakethecontentund11itA11dbh.consideringtheconvenienceoftheuer.Wi1.1.beproPOeedtoISO.12.2OutsidediameterIokranCZ12.2Mmotidentica1.M1.hJ1.S.AddHiOnAddthemeasuringmethod.AdditiontomakethecontentunderMUndb!o.con-idpring
27、theconvnionceoftheuer.Wi1.1.bepro*powedtoISO./iterationA1.terthereferenceva1.uerforoutside*diameterintherangeof*49orovertoand0.01bynuxukpinth。pub1.ishedverton.Wi1.1.contactISOecretariatabouttherr*,consideringtheconvenienceoftheuser.Wi1.1.beproposedtoISO.12.4F1.angedimen*donx124AImoe1.identica1.withJ1.S
