>> P.457
K251020501002005001000×103TotalslidingdistanceSmFig.5TotalslidingdistanceagainstcontactpressureofMaintenance-freesphericalbushings100908070605040302010012mm/NpContactpressure■Lubrication■OilHoleitisrecommendedSteel-on-steelSphericalBushingsrequireperiodiclubricationasageneralrule.Duringinitialgreaseoperation,toshortenthelubrica-tioninterval.Lithiumsoapbasedgrease(NLGIcon-sistencyNo.2)containingmolybdenumdisulfide(MoS2)iswidelyusedasthelubricationgrease.ForMaintenance-freeSphericalBushings,lubricationisnotrequired.However,supplyinglithiumsoapbasedgreasebeforeoperationcanextendtheSphericalBushing.Also,toprotectthebearingfromforeignsubstancesandcorrosion,itiseffectivetofilltheareaaroundthebearingwithgrease.thelifeofThenumberofoilholesoninnerandouterringsisshowninTable15.Table15NumberofoilholesoninnerandouterringsBushingtypeNumberofoilholesoninnerandouterringsSteel-on-steelSphericalBushingsMetricseriesInchseriesGE…EGE…GSB,SB…AGE…ES,GE…GSSBBMaintenance-freeSphericalBushingsMetricseries…ECGE0220Remark Typeswithoilholesarealsoprovidedwithoilgroovesoninnerandouterrings.K8
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