This cylindrical roller bearing carries a single row of rollers guided by a solid brass cage (M1), with two ribs on the outer ring and a smooth inner ring, allowing the inner ring to move axially relative to the outer ring so it works as a non-locating bearing. Bore diameter is 45.0 mm, outside diameter 100.0 mm, width 25.0 mm, and net mass 0.98 kg. The reinforced E design gives increased load capacity within the same envelope. Limiting speed is 12800 1/min, reference speed 6400 1/min. Radial internal clearance is CN (Group N), and running accuracy is held to P6, giving tighter rotational precision than standard tolerance class. The smooth inner ring without ribs permits free axial displacement, compensating for shaft expansion or misalignment along the bearing axis while transmitting purely radial load. The M1 brass cage supports stable roller guidance at the stated speed range, and the open design requires external sealing and separate lubrication suited to the operating conditions.