This deep groove ball bearing carries radial and moderate axial loads on a shaft of 20.0 mm bore, 47.0 mm outside diameter and 14.0 mm width, weighing 0.1 kg. It belongs to Generation C design, fitted with metal shields on both sides (2Z) and a TVH cage made of glass-fibre reinforced plastic, snap-type. Limiting speed is 20600 1/min, reference speed 18100 1/min, and radial internal clearance falls in the CN (Group N) range. The metal shields keep out coarse contaminants while retaining the factory grease fill, so the bearing runs sealed on both sides without maintenance. The plastic snap cage reduces friction and mass compared with a pressed-steel cage, supporting the stated speed ratings, and the CN clearance suits normal operating conditions without added preload requirements.