>> P.69
B2â– StructureandfeaturesIKOShellTypeNeedleRollerBearingsarelight-weightbearingswithlargeloadratings.Theyemployashelltypeouterringmadefromathinspecial-steelplatewhichisaccuratelydrawn,carburizedandquenched,thusprovidingthelowestsectionalheightamongtheneedlerollerbearings.Therearetwotypesofbearingsavailableinthisseries;thecagedtypeandthefullcomplementtype.Theappropriatetypecanbeselectedaccordingtotheoperatingconditions.Thecagedtypehasastructureinwhichtheneedlerollersareaccuratelyguidedbythecageandthrustrings.Itisusefulforapplicationsathigh-speedrotation.Thefullcomplementtypenee-dlerollerbearing,ontheotherhand,issuitableforheavy-loadapplicationsatlow-speedrotation.Sincethesebearingsarepress-fittedintothehousing,nofixturesforaxialpositioningareneeded.Theyareidealforuseinmass-producedarticlesthatrequireeconomy,andhaveawidevarietyofapplications.StructuresofShellTypeNeedleRollerBearingsStandardCagedTypeCagedandclosedendtypeCagedtypewithtwosealsGreaseretainedfullcomplementtypeOuterringThrustringCageNeedleRollerOuterringThrustringCageNeedleRollerOuterringThrustringCageSealOuterringNeedleRollerNeedleRollerB
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