This single-row cylindrical roller bearing carries a bore of 170.0 mm, outside diameter of 310.0 mm, and width of 52.0 mm, with a net mass of 17.6 kg. It is a non-locating bearing of type NU, featuring two ribs on the outer ring and a smooth (rib-free) inner ring, allowing free axial displacement between the rings within the bearing. The E design provides an optimized internal geometry for increased load carrying capacity, and the M1 cage is a solid brass cage guided on the roller set. Limiting speed is rated at 3850 1/min, with a reference speed of 1970 1/min. The smooth inner ring and axially free outer ring design allow this bearing to accommodate axial displacement caused by thermal expansion of the shaft, making it suitable as a non-locating bearing position within a shaft arrangement. Radial internal clearance is C3 (Group 3), providing increased internal clearance to compensate for interference fits and operating temperature rise. Running accuracy corresponds to P6 tolerance class, suited for applications requiring tighter rotational precision than standard tolerance. The bearing is supplied without integrated seals, requiring external sealing and a separate lubrication supply of grease or oil suited to the specified speed range.