6218, 6218N, 6218Z, 6218ZZ, 6218-RZ, 6218-2RZ, 6218RS, 6218-2RS deep groove ball bearing Basic Information Structure : Deep Groove Type Ball Model Number: 6218  Number of Row: Single row deep groove ball bearing or double row deep groove ball bearing Material: iron,Gcr11, Gcr15 Similar type: 6218, 6218N, 6218Z, 6218ZZ, 6218-RZ, 6218-2RZ, 6218RS, 6218-2RS .High precision,long life 2.Quick delivery,good service