This deep groove ball bearing carries radial loads in a slim cross-section design, with a bore of 30.0 mm, outside diameter of 42.0 mm and width of only 7.0 mm. It weighs 22.0 g and is fitted with a steel sheet metal cage (JN). The limiting speed reaches 24500.0 1/min, while the reference speed is 11500.0 1/min, giving a wide margin between thermally safe operation and maximum mechanical speed capability. Radial internal clearance is CN (Group N), suitable for standard fits without preload requirements. The narrow width and low mass make this bearing suitable for applications where axial space is restricted and radial load capacity does not need to be high relative to the bore size. The steel sheet metal cage keeps friction and rotating mass low, supporting the high limiting speed rating.