>> P.495
K46â– StructureandFeaturesâ– TypesIKOL-Ballsareself-aligningrod-endsconsistingofaspecialzincdie-castalloybodyandastuddedballwhichhasitsaxisatrightanglestothebody.Theycanperformtiltingmovement,oscillatingmove-mentandrotationwithlowtorque,andtransmitpowersmoothlyduetouniformclearancebetweentheslid-ingsurfaces.Theirsuperiorwearresistanceassuresstableaccura-cyforlongperiodsoftime,andmaintenanceissim-ple.Theyareveryeconomicalbearings.Forthesereasons,theyarewidelyusedinlinkmech-anismsinautomobiles,constructionmachinery,farmandpackagingmachines,etc.StructuresofL-BallLHSAStructureofL-BallLHSBodyBodyBodyBodyBushing(Copperalloy)Ball-studBall-studDustcoverBall-studBall-studDustcover(Fixedtothebody)Bushing(Lowcarbonsteel)Bushing(Copperalloy)andupwardsLHSA5,6L-BallsareavailableinvarioustypesasshowninTable1.Table1TypeofL-BallsTypeL-BallL-BalldustcoverModelcodeLHSALHSPRCL-BallLHSAThesearecompactrod-endsinwhichthesphericalpartoftheball-studareheldbythespecialzincdie-castalloybody.Thereisadustcoveronthestudsideandgoodqualitylithiumsoapbasegreaseispre-packed.Theycanberunforlongperiodsoftimewithoutre-lubricationandhaveexcellentlubricationandanti-dustproperties.Asshowninthestructuraldrawing,theserod-endsareclassifiedinto3typesbysize.Inaddition,theball-studsofLHSA10andlowerareformedinonesolidbody,butthoseofLHSA12andhigher,whichareusedunderlargeloads,havethestudfriction-weldedtoahighprecisionsteelballtogivegreaterresistancetowear.L-BallLHSTheserod-endshaveafriction-weldedball-stud,andaspecialzincdie-castalloybodywhichhousesthesphericalsurfaceofthehighprecisionsteelball.Thereisanalmostcompletecontactacrosstheslid-ingsurfaces,andtheuniformclearanceguaranteesastablebearinglife.AnL-Balldustcovercanbeattachedtotheserod-ends.Iftherod-endsarelubricatedwithlithiumsoapbasegrease,theyhaveexcellentlubricationandanti-dustpropertiesandcanrunforlongperiodsoftimewithoutre-lubrication.WhentheL-BallLHSisdeliveredwithadustcoveronrequest,lithiumsoapbasegreaseisprepacked.K
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