This deep groove ball bearing carries radial and moderate axial loads in a single row of balls, using a steel sheet metal cage (JN) to guide the rolling elements. Bore diameter is 25.0 mm, outside diameter 80.0 mm, width 21.0 mm, with a net mass of 0.522 kg. The limiting speed reaches 12400 1/min, with a reference speed of 10100 1/min, giving margin for sustained operation without excessive heat generation. Radial internal clearance falls in group CN, suitable for standard fit conditions without preload requirements. The steel sheet metal cage keeps mass low and allows stable ball guidance at the stated speed range. Bore type Z should be checked against the shaft fit before mounting. The bearing is supplied without integrated sealing, so lubricant supply and contamination protection must be arranged externally.