The NACHI 7204CYDUP4 is a precision angular contact ball bearing featuring a 20mm bore diameter, 47mm outer diameter, and a combined width of 28mm for the duplex pair. It has a 15° contact angle and is constructed with steel balls and a polyamide resin cage, ensuring high durability and smooth operation. This ABEC 7 (ISO P4) rated bearing supports combined radial and axial loads, making it suitable for high-precision applications. The open enclosure design allows for effective lubrication and heat dissipation, while the universal ground duplex configuration enhances axial rigidity and load capacity.