Single row radial ball bearing accommodating pure radial loads and moderate axial loads in both directions, running on a solid ball complement guided by a solid laminated fabric cage (TB). Bore diameter is 30.0 mm, outside diameter 55.0 mm, width 13.0 mm, and the bearing weighs 120.51 g. Limiting speed reaches 18500 1/min, with a reference speed of 13100 1/min. The C3 radial internal clearance (Group 3) provides extra internal play, compensating for thermal expansion and interference fits under load, which suits installations where operating temperature rises during service. The TB cage design offers stable ball guidance at higher speeds compared to pressed steel cages, and the bore type Z should be matched with the corresponding shaft tolerance during mounting. As an open, unsealed design, external lubrication and periodic relubrication with grease or oil must be planned according to the operating conditions.