This deep groove ball bearing carries radial and limited axial loads on a single row of balls, with a bore diameter of 20.0 mm, outside diameter of 52.0 mm and width of 15.0 mm. Both sides are fitted with shields (Z), and the bearing uses a steel sheet metal cage (JN). Net mass is 0.155 kg. Limiting speed is rated at 16800 1/min, with a reference speed of 14400 1/min, giving the operating ceiling under standard mounting and lubrication conditions. Radial internal clearance falls in the CN (normal) group, suitable for standard shaft and housing fits without added preload. The shields protect the raceway and balls from dust and splashed contaminants while retaining the grease fill, so the bearing is intended for shaft positions with fixed axial location where this clearance class and cage design match the running speeds given above.