... Clearance: C2, C0, C3; Precision Level: P0, P6, P5 (ABEC1, ABEC3, ABEC5); 4) Noise Level: Z1, Z2, Z3; Vibration Level: V1, V2, V3; 5 ... need to lubricate any more, meanwhile, it's suitable to work from the temperature from -30degree to +120degree. Because of such ...