>> P.88
IdentificationnumberMass(Ref.)g──81─────────────63.5109──────96122StandardMass(Ref.)gClosedendMass(Ref.)gGreaseretained──YT3720─────────────YT4015YT4025────────────────────────────────────────────────────────────TLA4012ZTLA4016ZTLA4020Z303949TLAM4012TLAM4016TLAM4020404958.5──────YT4520YT4525────────────────────────TLA4516ZTLA4520Z43.554.5TLAM4516TLAM45205667ClosedendTAM3720TAM3730─Mass(Ref.)g73110─TAM3815TAM3820TAM3825TAM3830TAMW38456074.596114159───63.579102120154────90115135174─────TAM4015TAM4020TAM4025TAM4030TAM4040────TAM4520TAM4525TAM4530TAM4540──Mass(Ref.)g64.5101─5165.582.5104149───5469.586.5110144────77102122161──StandardTA3720ZTA3730Z─TA3815ZTA3820ZTA3825ZTA3830ZTAW3845Z───TA4015ZTA4020ZTA4025ZTA4030ZTA4040Z────Shaftdia.mm373840TA4520ZTA4525ZTA4530ZTA4540Z──45Shaftdia.37-45mmSHELLTYPENEEDLEROLLERBEARINGSNote(1)Allowablerotationalspeedappliestooillubrication.Forgreaselubrication,amaximumof60%ofthisvalueisallowable.Remarks1."W"intheidentificationnumberindicatesthatrollingelementsarearrangedindoublerows.2. ShellTypeGreaseRetainedFullComplementNeedleRollerBearingsareprovidedwithprepackedgrease.Standardtypeandtypesoftheseclosedendbearings.typebearingsarenotprovidedwithprepackedgrease,soperformproperlubricationwhenusingB21
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