Carries radial loads and moderate axial loads on a shaft of 105.0 mm bore, with an outside diameter of 190.0 mm and a width of 36.0 mm. Net mass is 3.73 kg, limiting speed reaches 2030.0 1/min, and the bearing is built as a single row deep groove ball bearing with a steel sheet metal cage (JN). Radial internal clearance is set to C3, wider than normal, and both sides carry integral seals for permanent grease retention. The C3 clearance compensates for thermal expansion under load and interference fit, keeping the bearing free from excess preload once operating temperature is reached. Seals on both faces keep the grease fill in place and block contamination without the need for external sealing arrangements, so no relubrication access is required in service. Equivalent designations: SKF 6221-2RS1/C3, NSK 6221DDUC3, NTN 6221LLUC3.