SKF 6234-series hybrid ceramic deep groove ball bearing with ceramic rolling elements, steel rings and C3 internal clearance. Bore is 170 mm, outside diameter 310 mm and width 52 mm. The hybrid design provides electrical insulation between the raceways and lower rotational inertia than an all-steel equivalent. Reported carbon footprint is 93.4560 kg CO2e per unit. Supplied under manufacturer part number MRC.234S-HYBÆ1, HS code 8482.10, country of origin United States.