This single row cylindrical roller bearing carries two ribs on the outer ring and one rib on the inner ring, giving a semi-locating configuration that transmits axial loads in one direction while allowing free axial displacement in the other. Bore is 100.0 mm, outside diameter 180.0 mm, width 46.0 mm, mass 5.3 kg. Limiting speed is rated at 6800.0 1/min, reference speed at 2900.0 1/min. The E design denotes an optimized internal geometry for increased load rating, and the roller set is guided by an M1 machined cage. Radial internal clearance falls in the C3 (Group 3) range, wider than standard, compensating for thermal expansion during operation and interference fits on the shaft or housing. The rib arrangement lets this bearing take up axial displacement of the shaft in one direction, making it suitable for locating one bearing position while a floating bearing is used elsewhere on the same shaft line. As an open bearing without integrated seals, lubrication and sealing must be provided externally by the housing design.