... rings of all types are separable. (Reprint article) CYLINDRICAL ROLLER BEARINGSeries:N, NU, NJ, NUP, NN, etcPrecision RatingP0/ ... P6/P5/P4Lubrication:Grease, oilMaterialBearing steel(GCR-15),Gcr15SiMn,Chrome steel Certification:ISO9001: 2000 Payment:TT 30% deposit , ... service:Such as: skf, ntn, nsk, etcApplication: Cylindrical roller bearing is widely used in metallurgy, mining, printing machines, ...