Deep groove ball bearing Low friction torque & low noise Excellent sealed grease lubrication Professional supplier. Deep groove ball bearings mainly take ... 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~ ... .3000Notes:More models we have. Deep groove ball bearing