This deep groove ball bearing carries radial and moderate axial loads on a shaft of 12.0 mm bore, with an outside diameter of 28.0 mm and a width of 8.0 mm. It weighs 0.021 kg and is fitted with shields on both sides, protecting the raceway from dust while still allowing the standard grease fill to remain in place. The cage is a steel sheet metal type (JN), and the radial internal clearance falls in the CN (Group N) range. The limiting speed is rated at 32000 1/min, with a reference speed of 23200 1/min, making this bearing suitable for applications running at higher rotational speeds within its size class. The shielded design (2Z) keeps out coarse contaminants without full contact sealing, so the bearing is intended for clean to moderately clean environments where relubrication is not required over its service life. The CN clearance and steel cage support stable running under normal thermal and load conditions typical for this bore size.