Deep groove ball bearing 61818-2RSR-Y carries radial load through a single row of balls guided by a brass sheet metal cage. Bore diameter is 90.0 mm, outside diameter 115.0 mm, width 13.0 mm, and net mass 0.282 kg. Seals are fitted on both sides, the limiting speed is 2700.0 1/min, and radial internal clearance is CN (Group N). The thin-section design keeps radial and axial dimensions compact while the brass cage supports stable ball guidance at the stated speed limit. Integrated seals retain grease and block contaminants without external protection, so the bearing can be mounted with grease lubrication already in place. Standard CN clearance suits mounting conditions without additional preload requirements, and the brass cage construction adds stability where load direction is mainly radial.