The Nachi 5309 angular contact ball bearing is designed for high-performance applications, featuring a 45mm inner diameter, 100mm outer diameter, and a width of 39.7mm. This double-row bearing is capable of handling radial, moment, and bi-directional axial loads, making it suitable for demanding environments. With a dynamic load capacity of 76,500 N and a static load capacity of 56,500 N, it offers robust reliability. The bearing has a contact angle of 20 degrees and can operate at speeds up to 5,000 rpm with grease lubrication or 6,700 rpm with oil. Its open design allows for easy maintenance and inspection.