The NACHI 5204 is a double-row angular contact ball bearing designed for demanding applications requiring high load capacity and precision. It features a 20 mm bore, 47 mm outside diameter, and a compact 20.6 mm width, making it ideal for space-constrained installations. With a 20-degree contact angle, this bearing delivers a dynamic load rating of 20,000 N and a static load rating of 12,700 N, ensuring reliable performance under both radial and axial loads. Available in open, shielded (ZZ), and sealed (2NS) configurations, the 5204 supports maximum speeds of up to 10,000 rpm with grease and 14,000 rpm with oil lubrication. Its pressed steel cage enhances durability, while options for double seals or shields provide added protection against contaminants, making it suitable for blowers, pumps, transmissions, and other high-speed machinery.