Carries radial loads and moderate axial loads in a single row deep groove ball bearing design with contact seals fitted on both sides, giving the unit permanent grease retention and protection against dirt ingress without additional external sealing. The bore is 90.0 mm, outside diameter 140.0 mm, width 24.0 mm, and net mass is 1.21 kg. The cage is a steel sheet metal design, code JN, and the bore type is coded Z. Limiting speed is 2500.0 1/min, radial internal clearance is CN (Group N). The sealed design means the bearing is supplied pre-lubricated with grease and does not require external relubrication during service, which simplifies mounting where access for maintenance is limited. Radial internal clearance CN suits standard shaft and housing fits without preload, and the steel cage supports the moderate speed rating quoted above. Dimensional and constructional equivalents are SKF 6018-2RS1, NSK 6018DDU, NTN 6018LLU.