This spindle bearing carries a 15° contact angle and is manufactured to restricted (P4S) tolerances for precise, adjusted mounting. Bore diameter is 35.0 mm, outside diameter 55.0 mm, and width 10.0 mm, with a net mass of 76.51 g. The cage is designated T, and the bearing is supplied without sealing. Designed for use in matched pairs or sets, the B71907-C-T-P4S-UL allows the axial and radial clearance to be set through the adjustment procedure, which is essential for achieving the rigidity and running accuracy required at the P4S tolerance class. The open design, without integrated sealing, permits external lubrication and cooling arrangements to be applied directly at the mounting location, while the T cage supports stable guidance of the rolling elements at the speeds typical for this contact angle and tolerance grade.