This spherical roller bearing carries a tapered bore (K) with a bore diameter of 460.0 mm, an outside diameter of 680.0 mm and a width of 163.0 mm, giving a net mass of 196.5 kg. Its symmetric design (BEA) features two outer ribs with a rib washer, and the roller set runs in a machined MB1 cage. Radial internal clearance is set to C3 (Group 3), wider than normal, to compensate for thermal expansion and shaft deflection during operation. Limiting speed is rated at 980.0 1/min, with a reference speed of 580.0 1/min. The tapered bore allows mounting on a tapered shaft seat or with an adapter/withdrawal sleeve, simplifying installation and enabling precise control of the internal clearance during fitting. The self-aligning geometry accommodates angular misalignment and shaft deflection without loss of load-carrying capacity. The C3 clearance suits applications where operating temperatures or interference fits reduce the initial clearance, while the MB1 cage design supports stable roller guidance at the given speed range. The bearing follows standard relubrication practice, allowing grease replenishment through the bearing during service.