This spherical roller bearing accommodates radial loads together with combined loads acting from either direction, using a symmetric roller design with two outer ribs and a rib washer. Bore diameter is 280.0 mm, outside diameter 500.0 mm, width 176.0 mm, and net mass 142.855 kg. The limiting speed is rated at 1280.0 1/min, with a reference speed of 630.0 1/min. The bearing features a tapered bore (K) for mounting on an adapter or withdrawal sleeve, and is manufactured with C3 radial internal clearance to compensate for thermal expansion during operation. The machined brass cage (MB1) provides stable roller guidance at the given speed range, while the tapered bore design allows adjustment of internal clearance during mounting and supports shaft arrangements where sleeve fitting is required. The C3 clearance class suits applications with interference fits or elevated operating temperatures, where standard clearance would be insufficient. Relubrication is standard, allowing grease replenishment during service without disassembly.