This single-row cylindrical roller bearing carries a bore of 40.0 mm, an outside diameter of 90.0 mm, and a width of 33.0 mm, with a net mass of 1.042 kg. The outer ring has two ribs while the inner ring is smooth (no ribs), giving the NU design its non-locating function that allows axial displacement of the inner ring relative to the outer ring. The reinforced internal design E provides increased roller size and load carrying capacity within the standard envelope. The bearing is fitted with an M1 cage and runs to P6 running accuracy, supporting a limiting speed of 14200 1/min and a reference speed of 5800 1/min. The non-locating design suits applications where axial compensation is required, such as when a shaft needs to move freely in one direction without inducing axial preload. Radial internal clearance is CN (Group N), matching normal running conditions without added play or preload. The M1 cage, machined and centered on the roller set, supports stable roller guidance at the stated speed range, while the P6 accuracy class allows for precise radial runout control in mounting positions where shaft or housing tolerances are tightly controlled.