... V3, V2, V1 4) Internal clearance codes: C0, C2, C3, C4, C5 5) Material: AISI52100, AISI440C, AISI304, AISI316, Ceramic 6) Retainer: PTFE ... Z2,Z3,Z465.6. Internal elimination code: C0, C2, C3, C4, C57. Bearing material: bearing steel (9Cr18), stainless steel(AISI440C, ... V3, V2, V1 4) Internal clearance codes: C0, C2, C3, C4, C5 5) Material: AISI52100, AISI440C, AISI304, AISI316, Ceramic 6) Retainer: PTFE ...