This spindle bearing carries a 15° contact angle and is manufactured to restricted tolerances for precise axial and radial guidance under adjusted mounting. Bore diameter is 30.0 mm, outside diameter 55.0 mm, width 13.0 mm, and net mass 113.2 g. The cage is designated T, and the bearing has no sealing arrangement. Being supplied for pair or set arrangement, this bearing is intended for mounting in matched configurations where the adjusted internal geometry maintains defined preload and stiffness across the pair. The restricted tolerance grade (P4S) supports accurate shaft positioning at elevated speeds, while the absence of sealing allows external lubrication supply for the T cage design. Correct pairing orientation must be observed during mounting to preserve the intended contact angle and preload characteristics.