Carries radial loads and moderate axial loads through a single row of balls guided by a sheet steel cage (JN). Bore diameter is 17.0 mm, outside diameter 47.0 mm, width 14.0 mm, and net mass is 0.112 kg. The bearing reaches a limiting speed of 22300 1/min and a reference speed of 15900 1/min, with radial internal clearance in class C3 (Group 3), giving more internal play than the standard clearance range. The C3 clearance compensates for tighter fits and heat-related expansion during operation, keeping the bearing free from excessive preload once running temperature is reached. The open design without integrated sealing means lubrication and contamination protection must be provided externally. Dimensionally and constructionally this bearing corresponds to SKF 6303/C3, NSK 6303C3, and NTN 6303C3.