ball bearing,roller bearing,world famous bearings Structure world famous brands deep groove ball bearings Samples available Type Ball bearings Brand Name USU or some other world famous brand Precision Rating P0 ,P6,P5,P4,P2 Clearance C2,C3,C4 OEM Service welcome Number of row single row or double row Place of origin China Material chrome steel Cage chrome steel Certificate ISO9001:2008 Vibration level V1,V2,V3 Lubrication crease or oil Ball chorme steel Features High speed ,long life,high reliability,low noise Service customers first covers type rubber seal ,steel seal or brass seal Quality high quality Hardness 58-62HRC Delivery Rapid delivery