This single-row cylindrical roller bearing has a bore of 30.0 mm, outside diameter of 90.0 mm, and width of 23.0 mm, with a net mass of 0.882 kg. The outer ring carries two ribs while the inner ring is smooth, giving type NU a non-locating design that allows axial displacement between the rings. The bearing is fitted with an M1A cage, runs with C3 radial internal clearance, and is manufactured to P6 running accuracy. Limiting speed is rated at 15500 rpm, with a reference speed of 8100 rpm. The non-locating configuration lets this bearing accommodate axial shaft movement caused by thermal expansion, making it suitable as a floating bearing position where the mating bearing provides axial location. The M1A cage guides the rollers at higher speeds within the stated limiting and reference speed values, while the C3 clearance compensates for temperature rise during operation and interference fits on the shaft or housing. The P6 accuracy class supports applications requiring tighter running tolerances than standard class. As supplied, the bearing has no integrated seals or shields, so lubrication and external sealing must be provided by the surrounding housing design.