R16 Full Ceramic Bearing 1" x 2" x 1/2" Si3N4 - Full ComplementR16 Full Ceramic Ball Bearing 1" x 2" x 1 2" Full Complement Si3N4 Silicon Nitride The R16 full complement ceramic bearing is built entirely from high performance Si3N4 silicon nitride for maximum strength, temperature resistance, and precision. With no cage and a full complement of ceramic balls, it delivers superior load capacity and extreme durability in high speed, high temperature, and corrosive environments. Size: 1" ID x 2" OD x 1 2" Wide Type: