The FAG HCS71900-E-T-P4S-UL is a high-precision hybrid spindle bearing designed for demanding applications requiring extreme accuracy and high speeds. This angular contact ball bearing features ceramic balls (hybrid design) for reduced friction, lower operating temperatures, and extended service life. It has an inner diameter of 10 mm, an outer diameter of 26 mm, and a width of 8 mm. The 'E' denotes optimized internal design, 'T' indicates a PEEK cage, and 'P4S-UL' signifies a high-precision tolerance class with universal arrangement capability. Manufactured by FAG (a Schaeffler brand), this bearing is suitable for machine tool spindles and other high-speed rotating equipment.