The KBC 6303DD (also known as 6303-2RS, 6303DDU, or 6303LLU) is a single-row deep groove radial ball bearing designed for reliable performance in demanding electrical and mechanical applications. It features a 17 mm inner diameter, 47 mm outer diameter, and 14 mm width, with double rubber contact seals (2RS/DD) for enhanced protection against dust and moisture. Manufactured to ABEC-1 precision with C3 internal clearance, this bearing supports high rotational speeds and dynamic loads, making it ideal for motors, pumps, and industrial equipment. Its robust steel construction, polymer grease lubrication, and low-noise EMQ standards ensure smooth operation and extended service life in diverse environments.