The 6311-2RSR-C3 FAG Deep Groove Ball Bearing is engineered with a 55mm inner diameter and a 120mm outer diameter, making it perfect for a variety of applications. This bearing features two rubber seals that provide superior protection against dirt and moisture, enhancing its lifespan. With a C3 clearance, it allows for thermal expansion, ensuring optimal performance under varying conditions. Made from high-grade steel, it complies with ISO standards, making it suitable for use in electric motors, gearboxes, and other machinery.