This spherical roller bearing accommodates radial loads combined with shaft misalignment through its two symmetric outer ribs and rib washer design (BEA). Bore diameter is 280.0 mm, outside diameter 500.0 mm, and width 176.0 mm, with a net mass of 142.9 kg. The tapered bore, designated by code K, allows mounting on tapered seats or with adapter sleeves. Limiting speed reaches 1280 1/min, while reference speed is rated at 630 1/min. The bearing is manufactured with CN (Group N) radial internal clearance, suitable for standard mounting conditions without preload requirements. The MB1 cage, made of machined brass, provides stable roller guidance at the stated speed range and supports reliable operation under the radial load and misalignment capacity inherent to the spherical roller design. Standard relubrication feature allows grease replenishment during service without disassembly, supporting maintenance in continuous operation.