The 6304-2RS is a rugged, medium-duty Single-Row Deep Groove Ball Bearing equipped with dual synthetic rubber contact closures. Built specifically to isolate the internal rolling elements from severe environmental contamination, this bearing excels in operational zones where water, mud, and fine particulate matter are a constant threat. Possessing a 20 mm inner bore, a 52 mm outer diameter, and a 15 mm thickness, it complies with the ISO 6300 dimensional standard. This bulkier geometric profile guarantees superior shock resistance and elevated radial weight-bearing capacity when measured against standard light-duty alternatives of the same bore size.