>> P.94
SHELLTYPENEEDLEROLLERBEARINGSInchSeriesShaftdia.3.969-9.525mmStandardMass(Ref.)ClosedendMass(Ref.)StandardMass(Ref.)ClosedendMass(Ref.)GreaseretainedIdentificationnumberMass(Ref.)gYB2.52.5YB2.540.640.961.6───3.24.6────3.8──────3.45.37.29.1─YB34───YB45YB47────YB55──────YB64YB66YB68YB610─g─────────────6.6─────────8.6─────────────BHAM57─────────g─────────────6.3──────────────────────BHA57Z─────────BHA68Z8.2BHAM68g───────2.73.7─────BAM45BAM473.33.94.65.7──3.94.66.16.77.4─────BAM55BAM56BAM57BAM59──BAM65BAM66BAM68BAM69BAM610─────g───2.12.53.5──.64.35.433──3.54.25.76.37────────BA44BA45ZBA47Z──BA55ZBA56ZBA57ZBA59Z──BA65ZBA66ZBA68ZBA69ZBA610Z─────Shaftdia.mm(inch)3.969(5╱32)4.762(3╱16)6.350(1╱4)7.938(5╱16)9.525(3╱8)Note(1)Allowablerotationalspeedappliestooillubrication.Forgreaselubrication,amaximumof60%ofthisvalueisallowable.RemarkShellTypeGreaseRetainedFullComplementNeedleRollerBearingsareprovidedwithprepackedgrease.Standardtypeandclosedendtypebearingsarenotprovidedwithprepackedgrease,soperformproperlubricationwhenusingthesetypesofbearings.B27
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