... best quality and competitive price3. Main Bearing: SKF,TIMKEN,NSK,KOYO,,IKO,HRB,ZWZ,LYC Bearing 4. Bearing Precision Class: P0, P6, P5 ... , P4, P2 5. Bearing Clearance: C0, C1, C2, C3 ... , C4, C5 6. Bearing Material: GCr15, GCr15SiMn, Stainless steel 7 ...