This deep groove ball bearing carries radial and moderate axial loads in a single row of balls, running with a bore of 50.0 mm, outside diameter of 90.0 mm, and width of 20.0 mm, weighing 0.45 kg. It is built as Generation C with shields on both sides and a steel sheet metal cage (JN), giving it a limiting speed of 9900 1/min and a reference speed of 9200 1/min. The radial internal clearance is CN (Group N), suitable for standard fit conditions without preload or excessive play. The shields protect the raceway and balls from dust and coarse contaminants while retaining the internal grease fill, so no separate external sealing is required. This configuration suits shaft arrangements with normal running accuracy and standard operating temperatures.