The Nachi 7204BMU angular contact ball bearing features a 20mm inner diameter, 47mm outer diameter, and 14mm width, designed with a 40° contact angle for high axial load capacity. It includes a brass cage and C3 radial clearance for enhanced performance and durability. This single-row bearing supports a dynamic load rating around 13,300 N and a limiting speed of up to 16,000 RPM with oil lubrication. Constructed from high-quality JIS SUJ2 steel, it offers precise ISO P0 tolerance and is suitable for applications requiring reliable, high-speed rotation with moderate radial and axial loads.