The Timken Company 304KDD Deep Groove Radial Ball Bearing

The Timken 304KDD deep groove ball bearing is a single-row radial bearing in the Timken Fafnir 300 Series that uses double metal shields (KDD) to retain lubricant and prevent contaminants from entering, delivering smooth, low-friction rotation at high speeds. It has a 20 mm bore, 52 mm outside diameter, and 15 mm width, with a straight bore and steel balls and cage designed for reliability. The bearing is specified for a dynamic radial load rating of 17,700 N (3,970 lbf) and a static radial load rating of 7,880 N (1,770 lbf), with limiting speeds of 11,000 rpm under grease lubrication and 13,000 rpm with oil lubrication. Weighing about 0.15 kg, it is factory-lubricated and features precision-ground raceways, double-shielded construction, and high-speed capability for long service life. Commonly used in electric motors, pumps, conveyors, gearboxes, fans, compressors, agricultural equipment, and other industrial rotating machinery that requires reliable, low-maintenance operation.