The INA-FAG B71906-C-2RSD-T-P4S-UM is a high-precision sealed spindle bearing designed for demanding applications. It features a 30mm bore diameter, 55mm outer diameter, and 13mm width. This bearing is part of the 719 series, indicating a compact design. The 'C' designation refers to a contact angle of 15 degrees, suitable for high-speed applications. '2RSD' signifies seals on both sides, providing protection against contaminants and retaining lubricant. The 'T' indicates a textile laminate cage, and 'P4S' denotes a special precision class, exceeding P4, ensuring high running accuracy and stiffness. 'UM' indicates a universal design for paired mounting. This genuine FAG bearing is engineered for optimal performance in machine tool spindles and other high-speed, high-precision rotating equipment.