This cylindrical roller bearing carries two ribs on the outer ring and a smooth (rib-free) inner ring, allowing axial displacement between the two rings and making it function as a non-locating bearing. Bore diameter is 70.0 mm, outside diameter 150.0 mm, width 51.0 mm, and net mass is 4.36 kg. The limiting speed is 8200 1/min, with a reference speed of 3800 1/min. The bearing uses an M1 cage, the E design for increased load carrying capacity, and radial internal clearance C3 (Group 3), with running accuracy to P6. The smooth inner ring construction allows the inner and outer rings to move axially relative to each other, compensating for shaft expansion under thermal or load-induced growth without introducing axial constraint. The C3 clearance accommodates the additional internal clearance requirement typical of tighter fits or elevated operating temperatures, while the P6 running accuracy supports applications requiring tighter radial runout control. The M1 cage guides the rollers reliably at the stated speed range, and the single-row, non-locating design permits it to be paired with a locating bearing elsewhere on the same shaft.