... instruments, low noise motors, automobiles, motorcycles and other machinery Deep groove ball bearing mainly take radial load as well as ... speedBBCSealed grease lubrication CBADustproofCBAWaterproofDCBA.ExcelientB.Good C.Fair D.Poor Series:SeriesBore diameterVariant structure600010~120Z,2Z,RZ,2RZ,RS1,2RS1,N ... More models we have, Any doubt please contacto to us. Deep groove ball bearing 6400 Series