This spherical roller bearing has a tapered bore (taper 1:12, bore type K), allowing mounting on an adapter sleeve and compensating for shaft deflection. Main dimensions follow DIN 635-2: bore diameter 40.0 mm, outside diameter 80.0 mm, width 23.0 mm, net mass 0.505 kg. The E1 design incorporates a JPA cage, and the bearing carries CN (Group N) radial internal clearance. Limiting speed is 10500 1/min, with a reference speed of 6200 1/min. The two rows of rollers on a common sphered outer ring race give the bearing self-aligning capability, accommodating angular misalignment and shaft deflection under radial and combined loads. The CN clearance suits standard-fit applications, while the tapered bore simplifies mounting and dismounting on sleeves without requiring a separately machined tapered shaft seat. Relubrication follows standard grease intervals, and no integral sealing is present, so external sealing arrangements should be provided as required by the operating environment.