This self-aligning ball bearing compensates for shaft misalignment through its spherical outer raceway, allowing angular deflection between shaft and housing without edge loading on the balls. Bore diameter is 55.0 mm, outside diameter 100.0 mm, width 25.0 mm, with a net mass of 0.825 kg. The bore type K indicates a tapered bore with a 1:12 taper, intended for mounting on a tapered shaft seat or with an adapter sleeve rather than a straight shaft. The cage is designated TVH, a glass-fibre reinforced plastic cage guided on the balls. Limiting speed is 3900 1/min. Radial internal clearance is C3, greater than standard, which compensates for interference fit tightening during mounting on the tapered seat and for thermal expansion in operation. Both sides are fitted with seals (2RS), retaining grease inside the bearing and excluding external contamination, so no external sealing arrangement is required. The combination of self-aligning capability, tapered bore, and sealed design suits mounting locations where shaft deflection or housing misalignment must be tolerated while keeping relubrication intervals low. Dimensionally and constructionally equivalent bearings are SKF 2211E-2RS1KTN9/C3 and STEYR 2211EK/2RS1/TG/C3.