This deep groove ball bearing carries radial and moderate axial loads in a single row of balls, with a bore of 55.0 mm, outside diameter of 90.0 mm and width of 18.0 mm, weighing 0.389 kg. It features seals on both sides (2RSR), a steel sheet metal cage (JN), and internal clearance C3 (Group 3), allowing for greater radial play than the standard class to compensate for thermal expansion during operation. The limiting speed is 4050 1/min. The C3 clearance combined with double-side sealing makes this bearing suitable for applications where operating temperatures raise beyond ambient and where protection against dirt and loss of grease is required. The integrated seals retain factory-filled grease, eliminating the need for external relubrication and reducing the ingress of contaminants during service. Dimensionally and constructionally, this bearing corresponds to SKF 6011-2RS1/C3, NSK 6011DDUC3, and NTN 6011LLUC3.