Two rows of balls run in a common spherical raceway in the outer ring, allowing the inner ring with shaft to self-align and compensate for angular misalignment and shaft deflection. Bore diameter is 50.0 mm, outside diameter 90.0 mm, width 23.0 mm, mass 0.55 kg. The cage is a plastic (TVH) design guiding the balls between the rows. Limiting speed is 8100 1/min, reference speed 7100 1/min, radial internal clearance CN (Group N), bore type Z. The spherical outer raceway makes this bearing suitable where shaft bending or housing misalignment must be tolerated without loss of running accuracy, since the outer ring geometry allows the inner ring assembly to pivot rather than transmit edge loading. The plastic TVH cage reduces friction and mass compared with metal cages, supporting the stated speed ratings, while the CN internal clearance corresponds to normal operating fits without additional preload. As an open bearing (bore type Z refers to the bore tolerance, not a seal), relubrication and external sealing arrangements must be provided by the surrounding housing design.