This cylindrical roller bearing is a single-row, non-locating design with two ribs on the outer ring and a smooth inner ring, allowing axial displacement between inner and outer ring to compensate for shaft expansion. Bore diameter is 45.0 mm, outside diameter 100.0 mm, and width 25.0 mm. The cage is of TVP2 type, and the design follows the E series, which refers to the optimized internal geometry. Limiting speed is 9800 1/min, with a reference speed of 6400 1/min. Mass netto is 0.88 kg. The radial internal clearance corresponds to C3 (Group 3), providing additional internal clearance to accommodate thermal expansion and interference fits during mounting. Running accuracy is manufactured to P6 tolerance class, supporting precise radial guidance. As a non-locating bearing, it is suited for applications where one bearing position must allow axial movement of the shaft. Equivalent references include SKF NU309ECJ/C3, SKF NU309ECP/C3, and STEYR NU309E/TGP1/C3.