The 7211BMU Nachi Angular Contact Ball Bearing is designed for high-performance applications, featuring a 55mm inner diameter, 100mm outer diameter, and a width of 21mm. It has a contact angle of 40 degrees, making it suitable for handling both radial and axial loads efficiently. The bearing includes a brass cage and is flush ground, enhancing its durability and precision. It is ideal for use in machine tool spindles, pumps, gearboxes, and electric motors, where high-speed operations and precise load handling are required. The bearing's robust design ensures rapid accelerations and decelerations without needing adjustments for internal clearance or preload.