This single row deep groove ball bearing carries a steel sheet metal cage (JN) and runs with normal radial internal clearance (CN, Group N). Bore diameter is 30.0 mm, outside diameter 55.0 mm, and width only 9.0 mm, giving a net mass of 0.081 kg. The narrow section places it in the low-height 160 series. Limiting speed reaches 18500 1/min, with a reference speed of 10000 1/min. The reduced width makes this bearing suitable where axial space is restricted but radial load capacity in a deep groove design is still required. Normal clearance (CN) suits standard fit conditions without added preload, and the steel sheet metal cage keeps friction and mass low, supporting the high limiting speed. No sealing or shielding is specified, so lubrication must be supplied and maintained externally, and the bore type designation Z should be checked against the applicable fit table before mounting.