This self-aligning ball bearing compensates for shaft misalignment and deflection through its spherical raceway in the outer ring, allowing two rows of balls to adjust their position relative to the housing bore. The bore diameter is 75.0 mm, outside diameter 130.0 mm, and width 25.0 mm, giving a mass of 1.4 kg. The bore type K indicates a tapered bore with a taper of 1:12, designed for mounting on a tapered shaft seat or with an adapter sleeve rather than a cylindrical shaft. Limiting speed is 5700 1/min and reference speed 5500 1/min. The cage is TVH, a glass-fibre reinforced polyamide cage guided on the balls, which reduces friction and supports higher rotational speeds. Radial internal clearance is C3 (Group 3), greater than normal clearance, compensating for interference fit on the tapered seat and thermal expansion during operation. The tapered bore allows the mounted clearance to be set precisely during fitting, making the bearing suitable for applications where shaft misalignment must be absorbed without inducing load on the balls. Dimensionally and constructionally equivalent designations are NSK 1215KTNGC3, NWG 1215KC3TNG, and SKF 1215K/C3.