The 604RS Deep Groove Ball Bearing with Single Rubber Seal is a star product among the 60 series bearings of Cixi Laoyang Bearing Factory. It adopts a deep channel design, which can simultaneously withstand radial and bidirectional axial loads, ensuring the stable operation of the equipment. Made of high-quality steel, it has strong wear resistance and a long service life. The single rubber sealing structure is made by combining nitrile butadiene rubber (NBR) with low-carbon steel (SPCC), which can effectively isolate dust and impurities, prevent the loss of internal lubricating grease, and reduce friction and heat generation. This bearing has an inner diameter of 4mm, an outer diameter of 12mm and a thickness of 4mm. It is widely used in agricultural machinery, garden equipment, power tools and other fields, and supports customization to meet diverse demands.