The NTN 6228LLU5K is a genuine NTN deep groove ball bearing designed for robust performance. It features a 28 mm bore diameter, a 58 mm outer diameter, and a 16 mm width. The 'LLU' designation indicates that the bearing is equipped with contact rubber seals on both sides, providing excellent protection against dust and moisture, making it suitable for demanding environments. The '5K' suffix denotes a C5 radial internal clearance, which is greater than standard clearance, often used in applications with high temperatures or where shaft and housing fits require extra play. This bearing is ideal for various industrial and agricultural machinery applications requiring reliable rotation and protection.