High-performance Si3N4 Ceramic Deep Groove Ball Bearings engineered for extreme durability and ultra-smooth rotation. Precision-machined full ceramic construction (inner/outer rings + balls) ensures corrosion resistance, electrical insulation, and thermal stability up to 800°C.

Designed for high-speed applications including skateboard wheel assemblies, RC models, and industrial machinery. Silicon nitride ceramic balls reduce friction by 40% compared to steel bearings while maintaining 30% lighter weight.

Direct factory pricing guarantees wholesale rates for bulk orders. Compatible with standard 6901/6902/6903/6904 sizing for seamless replacement. Non-lubricated design operates flawlessly in wet/dry conditions.

Ideal for performance-driven applications requiring minimal maintenance: electric motor shafts, dental drills, and aerospace components. Vacuum-grade polishing achieves Ra≤0.05μm surface finish for vibration-free operation at 20,000+ RPM.