This deep groove ball bearing carries a cylindrical outer ring and an inner ring machined for a fit on the shaft, giving a bore diameter of 25.0 mm, an outside diameter of 52.0 mm, and a width of 21.0 mm, with a net mass of 0.158 kg. Both sides are closed with R seals (KRR), keeping the rolling elements protected from contamination while retaining lubricant inside the bearing. The cylindrical outer ring design suits mounting in a housing with a matching bore, while the inner ring fit allows secure positioning on the shaft. The double-side sealing arrangement makes this bearing suitable for applications where protection against dust and moisture ingress is required without additional external sealing measures, and where the bearing is expected to retain its factory-applied lubrication over extended operating periods.