The Nachi 7228BMU angular contact ball bearing features a 140 mm bore diameter, 250 mm outer diameter, and 42 mm width, with a 40-degree contact angle and a brass cage for durability and reduced friction. It offers a dynamic load capacity of approximately 197,000 N and a static load capacity around 214,000 N. Designed for high precision, it supports maximum speeds of up to 2000 rpm with grease lubrication and 2600 rpm with oil lubrication. The bearing is flush ground for versatile mounting options and is made of high-quality steel, ensuring reliability in demanding industrial applications.