This single row cylindrical roller bearing carries two ribs on the outer ring and a smooth (rib-free) inner ring, allowing free axial displacement between the two rings and making it suitable as a non-locating bearing. Bore diameter is 100.0 mm, outside diameter 180.0 mm, width 46.0 mm, and mass is 5.2 kg. The reinforced E design supports a limiting speed of 6800 1/min and a reference speed of 2900 1/min, with a solid brass cage (M1) guiding the rollers. Radial internal clearance is set to C3, providing extra internal play to compensate for interference fits and thermal expansion during operation. Running accuracy conforms to P6, giving tighter dimensional and rotational tolerances than standard class. The axial freedom of the smooth inner ring makes this bearing suitable for shaft mounting positions where thermal length changes must be absorbed without introducing axial preload, while the open design allows lubrication with either grease or oil depending on the housing arrangement.