SKF 6312 Hybrid Ceramic Deep Groove Ball Bearing, C3 clearance. Ceramic and electrical insulating bearings (Technique / Bearings / Bearings and accessories). Principal data: inner diameter 60 mm, outer diameter 130 mm, width 31 mm. Supplied under manufacturer part number MRC.312S-HYBÆ1, HS code 8482.10, country of origin United States.