This deep groove ball bearing carries radial and moderate axial loads in a single row, with a bore diameter of 45.0 mm, outside diameter of 85.0 mm, and width of 19.0 mm. The bearing has a mass of 0.389 kg and is fitted with a steel sheet metal cage (JN). Limiting speed is 12700 1/min, with a reference speed of 9900 1/min. Radial internal clearance is C3, wider than standard, compensating for tighter fits or thermal expansion during operation. The bore type designation Z relates to the bore tolerance execution. This configuration suits applications requiring stable radial guidance under increased internal clearance conditions, without integrated sealing, so external contamination protection and lubrication must be provided separately.