This spherical roller bearing accommodates two rows of rollers on a common spherical outer ring raceway, allowing self-alignment under shaft misalignment. It has a bore diameter of 55.0 mm, outside diameter of 120.0 mm, and width of 43.0 mm, with a net mass of 2.301 kg. The tapered bore (K, taper 1:12) simplifies mounting on straight or tapered shaft seats with an adapter or withdrawal sleeve. Limiting speed is 5800 1/min, with a reference speed of 4500 1/min. The design incorporates the E1 optimized internal geometry for increased load carrying capacity. The bearing is supplied with C4 radial internal clearance, wider than normal, compensating for interference fit expansion and thermal growth during operation. The JPA cage, a pressed steel cage, guides the rollers securely at the stated speed range. As an open bearing with standard relubrication feature, it requires external sealing arrangements and periodic grease or oil replenishment suited to the operating conditions.