... & low noise Excelient sealed grease lubrication Series:6000,6200,6300,6400. Deep groove ball bearingsDeep groove ball bearings mainly take ... C.Fair D.Poor Series:SeriesBore diameterVariant structure600010~120Z,2Z,RZ,2RZ,RS1,2RS1,N,NR,ZN,RZN620010~120Z ... ,2RZ,RS1,2RS1,N,NR,ZN,RZN630010~120Z,2Z,RZ,2RZ,RS1,2RS1,N,NR,ZN,RZN640010~120N, ... .6410Notes:More models we have. Deep groove ball bearing 6300 Series