>> P.6
A3Bearingscanbeclassifiedintotwomaintypes,namelyrollingbearingsandslidingbearings.Rollingbearingscanbesubdividedfurtherintoballbearingsandrollerbearingsaccordingtotherollingelements.IKONeedleRollerBearingsarehigh-precisionrollingbearingswithalowsectionalheight,incorporatingneedlerollersastherollingelement.Theyhavethefollowingfeatures.MeritsofRollingBearingsComparedwithslidingbearings,rollingbearingshavethefollowingmerits:CharacteristicsofNeedleRollerBearingsStableaccuracycanbemaintainedforlongperiods.Owingtolesswear,stableaccuracycanbemaintainedforlongperiods.Staticandkineticfrictionislow.Sincethedifferencebetweenstaticfrictionandkineticfrictionissmallandthefrictionalcoefficientisalsosmall,driveunitsormachinescanbemademorecompactandlightweight,savingmachinecostsandpowerconsumption.Machinereliabilityisimproved.Sincethebearinglifecanbeestimatedbasedonrollingfatigue,machinereliabilityisimproved.Lubricationissimplified.Sincegreaselubricationissufficientinmostcases,lubricationcanbesimplifiedforeasymaintenance.MeritsofNeedleRollerBearingsComparedwithotherrollingbearings,IKONeedleRollerBearingshavethefollowingadvantages:Rotatingtorqueissmall,improvingmechanicalefficiency.Sincetherotatingradiusissmall,therotatingtorqueisalsosmallunderthesamefrictionalconditions,thusimprovingmechanicalefficiency.Withalowsectionalheight,theycanwithstandheavyloads.Sincetheyhavealowsectionalheightcomparedwithotherrollingbearingsandyetcanwithstandheavyloads,machinescanbemademorecompactandlightweight,thussavingcosts.Inertiaisminimized.Sincethebearingvolumeandweightaresmall,themomentofinertiaofthebearingisminimizedwhenitisputinmotion.Mostsuitedtooscillatingmotions.Manyrollingelementsarearrangedatasmallspacingpitch,andthisconfigurationismostsuitedtooscillatingmotions.earingscanbeclassifiedintotwomaintyp,melyrolngbearingndidigbeingsRllingbearingsesbvidfurthintobalbeainsadrllerbearisodngotollnelements.NedleRlerBeaingsae-reciorlingberinwtalowtoalheightincorporatingneedlellrsstollnele.Teyveheollowinfeatures.MeitsoolligBearingsComparewithslidngbarngs,rolngbearingvhefollowngmerits:ChactristicsofNedleRollerBeringsSabecurcycnemaintainedorlongperiods.Owigoleswear,stleacuacanbeinedfolongperiods.Sttandkineticrictonislow.Sincethediffncebetweensaticrictionanknricionsmallnthfiinalcofficienialssmal,ivuitorachicanbemademorcomacandlitweight,savingmchinecostsnpoweronsumption.Machnereailtisimproved.ncethbearingifnbsimatdbasedorolliatgmchinereailitisimproved.Lubricaosimplified.ncegralubcatoisufficietnmstcass,lbricincbsimiifoeamntenance.MeritsNeeleRllrBearingsCompredwithherroingbarings,IONeedleRllerBearingsvethefollowadvantages:Rotatngtorueisll,improvingmialefficiency.inetheroatngrdissmaltherotatingtorqueisalsosmaludrhaefrictionalconditions,tsovichancalefficiency.Wihalowsectionalheig,theycanwithstnheavyloads.Sincetheyhavealowsectinaleigtcomparedihoheroingeainandytcanwithstandhavyloa,mahineaemdemoecompactandlteghtthussavingcosts.Inertiisiimized.ithbarngvolumeandwgemall,themoetofinrtaoftheberingsminimidwhenitiutinmotion.ostsuitedosillatingmotions.anyrollingeleentsarearrngedaasmallacingtchadthisconfgraioimssuitedtoosciimotions.
| < 
| 
> | 
>>
