This single row cylindrical roller bearing carries the reinforced E design with M1 cage, featuring two ribs on the outer ring and one rib on the inner ring, configured as a semi-locating bearing (type NJ). Bore diameter is 40.0 mm, outside diameter 90.0 mm, width 23.0 mm, and net mass 0.764 kg. Limiting speed reaches 14200 1/min, with a reference speed of 7100 1/min. The C3 radial internal clearance provides increased play to accommodate thermal expansion and shaft deflection during operation. The rib configuration on the inner and outer rings allows axial guidance in one direction while permitting free axial displacement, making this design suitable for locating shaft position on one side without inducing axial preload. The M1 cage guides the rollers, and the E design supports higher radial load capacity within the given envelope dimensions.