Premium Silicon Nitride Ceramic Ball Bearings for Longevity. Superior Material Strength: Made from Si3N4 ceramic with high strength, low density, and exceptional hardness. Excellent Corrosion Resistance: Chemically inert material resistant to harsh chemicals, moisture, and saltwater. Lightweight Construction: Approximately 60% lighter than steel, reducing system weight and energy consumption. Self-Lubricating Design: Pre-lubricated options available for maintenance-free operation and low friction. Custom Size Availability: Available in standard and custom sizes to meet specific application needs. Electrical Insulation: Non-conductive properties protect against electrical arcing in motors and generators. Non-Magnetic Properties: Eliminates interference in sensitive electronic equipment and magnetic field applications.