>> P.433
JCRBHVCRBFVCRB(C)CRBTCRBTFCRBS1N=0.102kgf=0.2248lbs.1mm=0.03937inch■AllowablerotationalspeedAllowablerotationalspeedsofCrossedRollerBearingsareaffectedbymountingandoperatingcon-ditions.ThevaluesingeneraloperationareshowninTable13.Table13dmnvalues(1)ofCrossedRollerBearingsTypeLubricantGreaseOilWithcageorwithseparatorOpentype75000150000Sealedtype60000-FullcomplementOpentype5000075000Sealedtype40000-Note(1)・dmnvalue=dm×nwhere, dm: Meanvalueofbearingboreandoutsidediameters, mm n: Numberofrotationsperminute, min-1 ■Rotationaltorquethanissmall.increasethestatictorqueandRotationaltorqueofIKOCrossedRollerBearingsarethatofplainbearingsandthedifferencelowerbetweenthedynamic(kinetic)torqueTherefore,thesebearingsminimizepowerconsumptionandoperatingtemperatureriseofmachineryandtheoverallefficiencyofmachines.Therotationaltorqueisaffectedbymanyfactors,butthefollowingequationscanbeusedexpediently.DpwT=μP0r———2where,T:Rotationaltorque,N・mmμP0r:Staticequivalentradialload,NDpw:Pitchcirclediameter,mm:Frictioncoefficient(Approx.0.010)( )d+DDpw≒————2■Lubrication(ShellLubricantsJapanK.K.)isshowninTable14,ALVANIAisThesebearingsaregenerallylubricatedwithgrease.Greaseissuppliedthroughtheclearancebetweentheinnerringandtheouterring.GreasespecificationGREASEEP2prepackedasthelubricatinggrease.Forbearingswithoutprepackedgrease,supplygreaseoroilforuse.Operatingwithoutlubricationwillincreasethewearontherollingcontactsurfacesandgreatlyaffectnoiseandheatgeneration,leadingtoashorterbearingtype,becarefulwithpressurewhenapplyinggreasesothatthesealsdonotcomeoff.thesealedlife.ForWhenusingaspecialgrease,carefullyexaminethegreasepropertiesandcontentssuchasbaseoilvis-cosityandextremepressureadditives.Inthiscase,pleasecontactIKO.Table14Bearingswithprepackedgrease○:Withprepackedgrease×:WithoutprepackedgreaseSealspecificationModelcodeCRBHV… ACRBFV… ACRBCCRB… ACRBTCRBTF… ACRBSCRBS… ACRBS… VOpentype(Nosymbol)Sealedtype(UU)××××〇〇×-×〇〇〇〇---〇〇Onesidesealedtype(U)--××---××■OilHoleForCrossedRollerBearings,oilholesandoilgroovescanbeprovidedonbearingringsifrequested.However,thisisnotapplicabletoSuperSlimTypeCrossedRollerBearingsandMountingHoledTypeSuperSlimCrossedRollerBearings.SlimCrossedRollerBearings.Whenanoilholeisrequiredontheouterring,attach"-OH"beforetheclearancesymbolintheidentificationnumber.Whenanoilholeandanoilgroovearerequiredontheouterring,attach"-OG"atthesameplaceintheidentificationnumber.Foranoilholeontheinnerring,attach"/OH",andforanoilholeandanoilgrooveontheinnerring,attach"/OG",atidentificationnumber.HighRigidityTypeCrossedRollerBearingsVandMountingHoledTypeHighRigidityTypeCrossedRollerBearingsVhaveanoilgrooveandtwooilholesontheouterringasstandard.Table15showsavailabilityofoilholesforeachbearingtype.thesameplacetheinTable15OilholesOilholecode/nOH/nOG-nOH〇-〇〇-------〇〇--〇〇〇-nOG-(1)-(1)〇〇-----BearingtypeCRBHV… ACRBFV… ACRBCCRB… ACRBTCRBTF… ACRBSCRBS〇-〇〇--〇〇〇… A… VCRBSNotes(1) CRBHV…AandCRBFV…Aareprovidedwithanoilgrooveandtwooilholesontheouterring.Remark ndenotesthenumberofoilholesnotexceeding4.Foroneoilhole,numberisnotindicated.Whenpreparingmultipleoilholes,pleasecontactIKO.J12
| < 
| 
> | 
>>
