This deep groove ball bearing carries radial and moderate axial loads on a shaft with a 12.0 mm bore, 30.0 mm outside diameter and 8.0 mm width, weighing 25.0 g. The single-row design uses a steel sheet metal cage (JN) and runs with normal radial internal clearance CN (Group N). The limiting speed reaches 38500 1/min, with a reference speed of 25000 1/min. The single-row deep groove design allows the bearing to handle combined radial and light axial loads while running at high speed due to its low-friction sheet metal cage construction. Normal internal clearance (CN) suits standard mounting conditions without preload requirements. The narrow 8.0 mm width and low mass make it suitable for compact shaft assemblies where space and weight are limited, and the recorded limiting and reference speeds indicate its capability for high-speed rotation within the specified operating range.