The Nachi 5204-2NS is a double row angular contact ball bearing designed for demanding applications, featuring a 20 mm bore, 47 mm outer diameter, and 20.6 mm width for precise fit and robust performance. It offers a 20° contact angle, supporting both radial and axial loads with a dynamic load rating of 20,000 N and a static load rating of 12,700 N, ensuring durability under high stress. The bearing is double sealed for enhanced protection against contaminants, uses a steel cage, and is pre-lubricated with high-quality grease. With an ABEC 1 (ISO P0) precision class and a maximum speed rating of 10,000 rpm, the 5204-2NS is ideal for blowers, pumps, transmissions, and other machinery requiring reliable, long-lasting rotation. Its compact dimensions and sealed design make it a versatile choice for industrial and automotive applications where space and environmental resistance are critical.