Full Ceramic Deep Groove Ball Bearing – Non?magnetic, electrically insulating, corrosion resistant, operable up to 1200°C. Self?lubricating, runs dry without oil or grease. Ideal for semiconductor, aerospace, medical, chemical processing, vacuum systems, and high?temperature furnace applications where steel bearings inevitably fail. We offer Si3N4 full ceramic deep groove ball bearings in a wide range of standard sizes, including miniature series (down to 2mm ID), metric and inch dimensions, and large?diameter configurations. Custom retainer materials (PEEK, PTFE, PA66, full complement without cage) are available.