High Speed Capability Silicon Nitride Roller Bearing with Electrical Insulation and Corrosion Resistance

Our silicon nitride roller bearings use ceramic rollers combined with steel rings (hybrid type) or full ceramic rings (all-ceramic type), designed for high-reliability rotating equipment under extreme operating conditions.

• High-Speed Capability - Low density (3.2 g/cm³) reduces centrifugal force, increasing speed limit by 30%-50% compared to steel bearings
• High Temperature Resistance - Operating range -200°C to +1200°C (all-ceramic type), no hardness loss at elevated temperatures
• Electrical Insulation - Prevents electric pitting, ideal for inverter motors, generators, railway traction motors
• Corrosion Resistance - Resists acids, alkalis, seawater, chemical solvents
• Low Friction & Self-Lubricating - Reduces heat generation, enables long-term operation with minimal or no lubrication
• High Rigidity & Low Thermal Expansion - Maintains precision positioning, better thermal stability than bearing steel

• Silicon nitride cylindrical roller bearings
• Silicon nitride tapered roller bearings
• Silicon nitride spherical roller bearings
• Custom dimensions and precision grades (P0 / P6 / P5 / P4)

• High-speed spindles (machine tools, PCB drilling machines)
• EV drive motors
• Aero-engine accessory drives
• Chemical pumps, vacuum pumps, semiconductor equipment
• Wind turbine gearboxes
• Medical equipment (e.g., CT scanner high-speed rotating parts)