The FAG HCS71913-E-T-P4S-UL is a high-precision hybrid angular contact ball bearing, specifically engineered for demanding machine tool spindle applications. This bearing features ceramic balls (Si3N4) for superior speed capabilities, reduced friction, and extended service life, combined with bearing rings made of rolling bearing steel. It has a bore diameter of 65 mm, an outer diameter of 90 mm, and a width of 13 mm. The 'E' designation indicates a 25° contact angle, while 'P4S-UL' signifies P4S precision class with ultra-light preload, ensuring optimal performance and rigidity in high-speed operations. The 'T' denotes a textile laminate cage, outer ring piloted.