Ball Bearing 1.Brand:SKF,NSK,RDRJ(domestic) 2.High pricision,low noise 3. ... 6300,6301,6302,6303,6304,6305,6306,6307,6308,6309,6310,6311,6312s67series:670568series:686,687,688,689,6800,6801, ... hexagonal, Inch breadth widened bore3.Sealing form:OPEN,RS,2RS,Z,ZZ,RZ,2RZ,N,NR4.Material:Gcr155.Quality standard ... home appliance motors, motorcycles, power tools, sports goods, office appliance SKF bearing 51215