Detailed Product Description Cylindrical Roller Bearing <1>Dimension <2>Speed Ratings <3>Weight ... stainless steel, ceramic & plastic Designs includes: · Single row cylindrical roller bearings o Bearing series: N, NJ, NU, NUP· Double row ... cylindrical roller bearings o Bearing series: NN3000, NN4900, NNU4900· Four row cylindrical roller bearings o Bearing series: FC, FCDmFCDP ...