This deep groove ball bearing carries radial and moderate axial loads through a single row of balls guided in a solid brass cage (M). Bore diameter is 150.0 mm, outside diameter 270.0 mm, and width 45.0 mm, with a net mass of 11.45 kg. Limiting speed reaches 4350 1/min, with a reference speed of 3350 1/min. Radial internal clearance is C3 (Group 3), larger than standard, compensating for thermal expansion and interference-fit mounting effects at this bore size. The solid brass cage (M) provides strength and dimensional stability at elevated operating temperatures and speeds. Without integrated seals or shields, the bearing requires external sealing and separate lubrication, suited for arrangements where relubrication access is provided.