The Nachi 7307BMU angular contact ball bearing features a 35mm inner diameter, 80mm outer diameter, and 21mm width, designed as a single-row, open-type bearing with a 40° contact angle. It is flush ground for precision, made with JIS SUJ2 steel inner rings and a JIS SPCC steel cage, offering a dynamic load capacity of 37,500 N and a static load capacity of 24,900 N. The bearing supports speeds up to 7,000 RPM with grease lubrication and 9,500 RPM with oil lubrication, with an ISO P0 precision class and internal clearance CN/C0. It is suitable for high-speed, high-precision applications requiring durability and reliability.