>> P.88
B21SHELLTYPENEEDLEROLLERBEARINGSNote(1)llowablerotationalspeedappliestooillubrication.Forgreaselubrication,amaximumof60%ofthisvalueisallowable.Remarks1."W"intheidentificationnumberindicatesthatrollingelementsarearrangedindoublerows.2. ShellTypeGreaseRetainedFullComplementNeedleRollerBearingsareprovidedwithprepackedgrease.Standardtypeandclosedendtypebearingsarenotprovidedwithprepackedgrease,soperformproperlubricationwhenusingthesetypesofbearings.Shaftdia.mmIdentificationnumberMass(Ref.)gStandard37384045TA3720ZTA3730Z─TA3815ZTA3820ZTA3825ZTA3830ZTAW3845Z───TA4015ZTA4020ZTA4025ZTA4030ZTA4040Z────TA4520ZTA4525ZTA4530ZTA4540Z──64.501─5165.582.50449───5469.586.51044────77022261──TAM3720TAM3730─TAM3815TAM3820TAM3825TAM3830TAMW3845───TAM4015TAM4020TAM4025TAM4030TAM4040────TAM4520TAM4525TAM4530TAM4540──7310─6074.5961459───63.579022054────90153574──────────TLA4012ZTLA4016ZTLA4020Z───────TLA4516ZTLA4520Z──────────────303949───────43.554.5──────────────TLAM4012TLAM4016TLAM4020───────TLAM4516TLAM4520──────────────404958.5───────5667────────YT3720─────────────YT4015YT4025──────YT4520YT4525──81─────────────63.509──────9622Mass(Ref.)gClosedendMass(Ref.)gStandardMass(Ref.)gClosedendMass(Ref.)gGreaseretainedShaftdia.37-45mm
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