... bearing, 4.steel materialJapan NSK Deep Groove Ball BearingOur main products include deep groove ball bearings,miniature thin-wall bearings,and different types of low ... ,6206,6207,6208,6209,6210,6211,6212 63series:6300,6301,6302,6303,6304,6305,6306,6307,6308,6309,6310,6311,631267series ... :16001,16002,16003,16005,16007(3)Sealing form:OPEN,Z,ZZ,V,VV,DU,DDU,N(4)Material:Gcr15(5)Quality ...