... level codes: V4, V3, V2, V1Internal clearance codes: C2, C3, C4, C5Ball bearings material: AISI52100, AISI440C, AISI304 ... NR.In different radial clearances C5, C4, C3, C2.Applications : Typical applications: electric motors, automotive applications, ... Automotive,electric motors, constraction machinery , Motorcycle , Motor , Pump ,Fan,Air conditioner ,Microwave Oven,Range hood,Sewing machine, ...