This single-row cylindrical roller bearing carries a bore of 100.0 mm, outside diameter of 150.0 mm, and width of 24.0 mm, with a net mass of 1.44 kg. Type NU design features two ribs on the outer ring and a smooth (rib-free) inner ring, allowing the inner ring to displace axially relative to the outer ring. The M1 cage guides the rollers, and running accuracy is held to P6. Limiting speed is rated at 9000 rpm, with a reference speed of 4150 rpm. Radial internal clearance is set to C3 (Group 3), wider than normal clearance. Because the inner ring has no ribs, this bearing functions as a non-locating bearing, accommodating axial shaft displacement caused by thermal expansion while carrying purely radial load. The C3 clearance suits applications with elevated operating temperatures or interference fits, and the P6 accuracy class supports rotation with tighter running tolerances than standard P0. As an open bearing without integrated seals, it requires external sealing and a separate lubrication supply matched to the specified speed ratings.