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ID:29993288
大小:153.47 KB
页数:8页
时间:2018-12-25
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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
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