This single-row cylindrical roller bearing carries the bore of 80.0 mm, outside diameter of 140.0 mm and width of 26.0 mm, with a net mass of 1.7 kg. Design E with brass cage M1 supports a limiting speed of 9000 1/min and a reference speed of 4200 1/min. The outer ring has 2 ribs while the inner ring is smooth (0 ribs), configuration NU, making it a non-locating bearing that allows axial displacement between inner and outer ring. Radial internal clearance C3 gives an enlarged clearance suited to compensate thermal expansion during operation. Running accuracy is held to P6, providing tighter dimensional and rotational tolerances than standard class. The smooth inner ring combined with the non-locating design allows the bearing to accommodate axial shaft movement without transmitting axial load, while the cage guides the rollers for stable operation at the stated speed range.