This spindle bearing carries a 70.0 mm bore, 100.0 mm outside diameter and 16.0 mm width, with a net mass of 321.8 g. It is built with a 15° contact angle and a T-type cage, supplied without sealing. The design corresponds to the C series with restricted tolerances, matched for adjusted mounting in pairs or sets. The 15° contact angle allows the bearing to take combined loads with a bias toward axial loading, while the restricted tolerances and P4S accuracy class support precise shaft guidance at higher rotational speeds. Being supplied in pairs or sets for adjusted arrangement, it is intended for mounting configurations where preload and mutual bearing position are set during assembly. The absence of sealing means external protection and lubrication supply must be arranged separately, with the T cage providing stable ball spacing under these operating conditions.