Cylindrical roller and raceway for the line of contact. The bearing load capacity, mainly bear radial load. Ring wall and rolling friction small, suitable for high-speed rotation 1）Bearing series:NU、NJ、NUP、N、NF NNU、NN 2) Material: chrome steel (GCR15) 3) Cage: Steel/Cu 4) Roller: steel 5) Precision: P0 - P6 6) Vibration: Z1 - Z3 7）Clearance: C0 - C5 8）Application: Large and medium sized motor, rolling stock, machine tool spindle, internal combustion engine, generator, gas turbine, gear box, rolling mill, vibration sieve, lifting and transportation machinery, etc.