ID 3-50mm Si3N4 Silicon Nitride Full Ceramic Ball Bearings With Cage Insulation
Model: Si3n4 Ceramic Bearing. Main Material: Silicon Nitride. The Ferrule and Ball Are Made of Silicon Nitride Ceramics, and the Cage Is Made of Ptfe, Which Is Resistant to High Temperature, Cold, Wear, Corrosion, and Magnetic and Electrical Insulation.