This spherical roller bearing accommodates radial loads while compensating for shaft misalignment through its two rows of rollers on a common sphered raceway. Main dimensions follow DIN 635-2: bore diameter 170.0 mm, outside diameter 280.0 mm, width 88.0 mm, net mass 20.7 kg. The bore is tapered (K, taper 1:12) for mounting on tapered shaft seats or with adapter/withdrawal sleeves. Limiting speed is 2380 1/min, reference speed 1460 1/min. The C3 radial internal clearance (Group 3) provides extra clearance to offset the interference fit resulting from mounting on a tapered seat, keeping the operating clearance within the design range after installation. The M cage (machined metal) supports higher speeds and gives stable roller guidance under the E1A design, which defines the internal geometry and load rating for this series. Standard relubrication feature allows regreasing during service without removal from the shaft.