The Nachi 7209CYDUP4 is a high-precision angular contact ball bearing featuring a 45mm bore, 85mm outer diameter, and 19mm width. It has a 15° contact angle and is constructed with JIS SUJ2 steel for both the outer ring and rolling elements, ensuring durability and performance. This bearing includes a polyamide resin cage and meets ABEC-7 (P4) precision standards, suitable for high-speed applications up to 15,500 RPM. It offers a dynamic load capacity of approximately 64,000 N, making it ideal for machine tools, electric motors, and other industrial uses requiring reliable axial and radial load handling.