The FAG HS71904-C-T-P4S-UL is a genuine high-precision single-row angular contact ball bearing, specifically engineered for demanding high-speed spindle applications. With a bore diameter of 20 mm, an outer diameter of 37 mm, and a width of 9 mm, this bearing features a 15° contact angle (C design) and a high-performance textile laminate cage (T), outer ring piloted, ensuring optimal operational stability. It meets the P4S tolerance class, signifying exceptional running accuracy and rigidity critical for precision machinery. The UL designation indicates a universal design for paired mounting with a light preload, making it an ideal component for various industrial applications requiring precise rotational guidance and high reliability.