This cylindrical roller bearing, type NU, is a single row design with a cage (M1) and reinforced load-carrying capability marked E. The outer ring carries 2 ribs while the inner ring is smooth (0 ribs), which makes the bearing a non-locating type allowing axial displacement between inner and outer ring. Bore diameter is 170.0 mm, outside diameter 310.0 mm, width 52.0 mm, and net mass 17.58 kg. Limiting speed is 3850.0 1/min, reference speed 1970.0 1/min, radial internal clearance is CN (Group N), and running accuracy is in P6. Due to its non-locating design, this bearing accommodates axial thermal expansion of the shaft without generating additional axial forces, making it suitable as a floating bearing position in a shaft arrangement. The CN clearance combined with P6 running accuracy supports stable radial guidance at the specified speed ratings, while the smooth inner ring raceway allows free axial movement of the inner ring relative to the outer ring during operation.