... , NU, NJ, NUP, NN, etc seriesClearance:C2,C3,C4,etcLubrication:Grease, oilCertification:ISO9001: 2000Payment:30% deposit ,balance against copy of B ... test- Greasing and gland- Noise and vibration inspection- Appearance inspection- Rust prevention- Lubrication-Packing skf auto bearing NU212