The Nachi 5308 is a double-row angular contact ball bearing featuring a 40 mm bore diameter, 90 mm outer diameter, and 36.5 mm width. It has a 20-degree contact angle designed to handle combined radial and axial loads efficiently. This open-type bearing offers a basic dynamic load rating of 63,500 N and a static load rating of 46,500 N, making it suitable for high-speed applications such as blowers, vacuum pumps, and transmissions. The bearing uses a punching cage and is engineered for durability and precision, supporting heavy dynamic and static loads with stable performance under demanding conditions.