Carries radial loads and moderate axial loads in a single row of balls running between machined rings, with contact sealed on both sides to keep grease in and contaminants out. The bearing is a deep groove ball bearing, bore diameter 90.0 mm, outside diameter 140.0 mm, width 24.0 mm, mass 1.21 kg, limiting speed 2500.0 1/min. The cage is a sheet steel design, code JN, and the radial internal clearance is C3 (Group 3), above the normal range. The C3 clearance compensates for the temperature rise generated under load and for a tight fit on shaft or housing, keeping the operating clearance within the intended working range. Integral seals on both sides retain the grease fill and block dirt ingress, so no external sealing arrangement is required and relubrication intervals can be extended. This configuration suits applications with pure or combined radial-axial loading where the shaft runs supported without significant misalignment and where sealed, low-maintenance operation is preferred. Dimensionally and constructionally equivalent parts are SKF 6018-2RS1/C3, NSK 6018DDUC3, and NTN 6018LLUC3.