Carries radial loads and moderate axial loads on a single row of balls running in deep grooves, with a bore of 90.0 mm, outside diameter of 140.0 mm and width of 24.0 mm. The bearing has metal shields on both sides and a pressed steel sheet metal cage (JN), giving a net mass of 1.23 kg. Internal clearance is C3 (Group 3), and both the limiting speed and reference speed reach 5600.0 1/min. The C3 clearance compensates for shaft and housing fits with tighter tolerances or thermal expansion during operation, keeping the bearing free of excessive preload. The shields retain the factory grease fill and keep out coarse contamination, so no additional sealing arrangement is required for the raceway. This construction suits applications where the shaft is supported without significant misalignment and where relubrication access is limited. Dimensional and constructional equivalents: SKF 6018-2Z/C3, NSK 6018ZZC3, NTN 6018ZZC3.