>> P.32
1-4BearingSelection(4)Shields/sealsComparedtoopenbearings,shieldedandsealedbearingssuppresscontaminationingressintothebearingandgreaseleakage.SteelplateshieldNMBpartnumber:ZZ(snapringfixed)NMBpartnumber:KKorHH(outerringfixed)JISpartnumber:ZZ(outerringfixed)StructurewithasteelplateshieldfixedtotheouterringwithasnapringNocontactbetweentheshieldinnerperipheryandtheinnerringouterperipheryStructurewithasteelplateshielddirectlyfixedtotheouterringNocontactbetweentheshieldinnerperipheryandtheinnerringouterperipheryRubbersealOpentype(openbearing)NMB/JISpartnumber:SSandDDNMB/JISpartnumber:NosymbolStructurewitharubbersealdirectlyfixedtotheouterringSelectnocontact(SS)orcontact(DD)betweenthesealandinnerringouterperipheryDDisairtightbuthashighertorqueStructurewithoutsteelplateshieldorrubbersealmountedForminiaturesizes,theshieldedbearingmayhavedifferentwidthdimensionsSSDD32
| < 
| 
> | 
>>
