1. Product Overview 7205CD/HC follows SKF super precision bearing standard specification. CD : 15° contact angle, high capacity D-design internal structure, universal matchable for duplex assembly HC : Hybrid construction, GCr15 steel rings + silicon nitride ceramic rolling elements, electrical insulation performance Open type design allows convenient circulating oil lubrication. It bears combined radial load and one-way axial load. Single bearing can be combined as DB back