thk轴承-球面轴承(en)8页

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1、SphericalBearingStructureandFeaturesSphericalBearingsmodelsSBandSA1areself-aligningplainbearingsdesignedforheavyloads.Theinnerandouterringsofthesemodelsusehigh-carbonchromiumbearingsteelthatishardened,ground,phosphate-coatedandseizedwithmolybdenumdisulfide(M

2、oS2).TheSphericalBearingiscapableofreceivingalargeradialloadandthrustloadsinbothdirec-tions.Furthermore,becauseofitshighresistancetoimpactloads,theSphericalBearingisoptimalforlow-speed,heavy-loadrockingcomponentssuchasthecylinderclevisesorhingesofconstructio

3、nandcivil-engineeringmachinery,thesuspensionsoftrucksandthebolsteranchorsofelectriccars.TypesandFeaturesModelSBModelSA1ThemostpopulartypeofsphericalbearingThistypeofsphericalbearingiswidelySphericalBearinginJapan,modelSBhaswidesphericalcon-usedinEurope.Theou

4、terringissplitattactareasandisusedasabearingforonepoint(outerringswithdiameterofφheavyloads.Theouterringissplitattwo100orthickeraresplitattwopoints),andpoints,enablingtheinnerringtobeaccom-thewidthandthicknessaresmallerthanmodated.modelSB.Thus,thismodelcanbe

5、usedinsmallspaces.Typesattachedwithhighlydust-preventivedustsealsonbothendsr(modelSA1…UU)arealsoavailable.3r-3AccuracyStandardsThedimensionaltolerancesoftheSphericalBearingaredefinedasindicatedintable1.Table1AccuracyoftheSphericalBearingUnit:μmNominaldimensi

6、onoftheToleranceinToleranceinToleranceoftheinnerdiameter(d)andtheinnerdiameterouterdiameterinnerorouterringouterdiameter(D)(mm)(dm)(Dm)inwidth(B1,B)AboveOrlessUpperLowerUpperLowerUpperLower10180–8——0–12018300–100–90–12030500–120–110–12050800–150–130–15080120

7、0–200–150–2001201500–250–180–2501501800–250–250–2501802500–300–300–300250315——0–350–350315400——0–400–400Note1:"dm"and"Dm"representthearithmeticaveragesofthemaximumandminimumdiametersobtainedinmeasuringtheinnerandouterdiametersattwopoints.Note2:Thedimensional

8、tolerancesoftheinnerandouterdiametersarethevaluesbeforetheyaresurface-treated.Note3:Thedimensionaltoleranceoftheouterringisthevaluebeforeitissplit.Note4:Tolerancesoftheinnerandouterdiam-etersinw