This single-row cylindrical roller bearing (NU318-E-XL-M1) has a bore of 90.0 mm, outside diameter of 190.0 mm, and width of 43.0 mm, with a net mass of 6.285 kg. The outer ring carries two ribs while the inner ring is smooth (no ribs), giving the NU design its characteristic axial displacement capability. Running accuracy is manufactured to P6, radial internal clearance is CN (Group N), and the cage is executed in M1 design. Limiting speed is rated at 6300 1/min, with a reference speed of 3650 1/min. Because the inner ring has no ribs, the bearing acts as a non-locating bearing, allowing free axial displacement between inner and outer ring to compensate for shaft expansion or misalignment along the axis. The P6 running accuracy suits applications requiring tighter rotational precision than standard tolerance class, while the CN internal clearance provides a balanced fit for typical radial load conditions without excessive play. The M1 cage design supports stable roller guidance at the specified speed range.