... life 2. chrome steel Gcr15 3. low noise 4. high precision China cylindrical roller bearing CYLINDRICAL ROLLER BEARING---Shenyang Total BearingSeries:N, NU, NJ, NUP, NN etc ... delivering or against copy of B/LPrecision:P0,P4,P5Application:cylindrical roller bearing is widely used in metallurgy, mining, printing machines, rolling machines ...