This single row deep groove ball bearing supports combined radial and axial loads within a compact envelope of 10.0 mm bore, 28.0 mm outside diameter and 8.0 mm width, weighing 0.024 kg. It uses a steel sheet metal cage (JN) and carries normal radial internal clearance (CN, Group N). The limiting speed reaches 40500 1/min, with a reference speed of 28500 1/min. The narrow width and light mass suit installations where space and inertia are restricted while still requiring reliable radial guidance. Normal internal clearance allows standard fit conditions without preload issues, and the sheet metal cage keeps friction low at higher speeds, supporting operation close to the stated limiting and reference speed values. The Z bore type designation should be checked against the mounting arrangement before assembly.