Carries radial loads with limited axial loading in a single row, single ball groove arrangement, bore 90.0 mm, outside diameter 140.0 mm, width 24.0 mm, mass 1.21 kg. The cage is a JN steel sheet metal design guided by the balls, keeping the assembly light and allowing higher speeds. Limiting speed reaches 6600 1/min, reference speed 5600 1/min, with radial internal clearance in the normal CN (Group N) range. The normal clearance class suits shafts with standard fits and moderate thermal growth, without requiring preload adjustment. Open construction (bore type Z) means lubrication and sealing must be provided externally, so grease or oil supply and contamination control depend on the housing design. Equivalent parts are available as SKF 6018, NSK 6018 and NTN 6018.