... (P6), ABEC-5(P5), ABEC-7(P4) 2)Noise level: Z1, Z2, Z3, Z43)Vibration Level: V1, V2, V3, V4 4)Clearance: C2 ... . Windage test3. Cleaning 4. Rotary Test5. Greasing and gland 6. Noise Inspection 7. Appearance Inspection8. Rust Prevention 9. Product Packaging Application ...