... low noise Excelient sealed grease lubrication Series:6000,6200,6300,6400. Deep groove ball bearingsDeep groove ball bearings mainly take radial load as well ... grease lubrication CBADustproofCBAWaterproofDCBA.ExcelientB.Good C.Fair D.Poor Series:SeriesBore diameterVariant structure600010~120Z,2Z,RZ,2RZ,RS1,2RS1, ... .80024.000900075000.6410Notes:More models we have. Deep groove ball bearing 6300 Series