Bearing Overheating at High Speed? HIP Silicon Nitride Balls Extend Service Life by Over 5×
2024-05-13
In high-speed spindles, dental turbines, and EV motors, traditional steel bearings often suffer from excessive friction, heat generation, and premature wear — especially under high voltage environments where electrical erosion occurs.
The Hot Isostatic Pressed (HIP) Silicon Nitride Ceramic Ball solves these problems through advanced sintering technology at 2000°C, achieving a fully dense microstructure with outstanding properties:
Flexural Strength: ≥1100 MPa
Hardness: HV1550–1600
Density: 3.2 g/cm³
Friction Coefficient: 0.0012
Electrical Resistivity: >10¹⁴ Ω·cm
The combination of light weight, self-lubrication, and electrical insulation allows bearings to operate continuously without lubrication degradation or arcing damage.
In practical applications, Si₃N₄ bearings last 5–10 times longer than conventional steel bearings, maintaining smooth rotation at speeds exceeding 120,000 rpm while operating in environments up to 800°C.
These ceramic balls are widely used in dental handpieces (1 mm balls), EV motor bearings (10 mm), and wind turbine main shafts (50.8 mm), offering unmatched performance where precision, reliability, and corrosion resistance are critical.
As the industry moves toward higher speed and maintenance-free systems, Si₃N₄ ceramic bearings have become the global benchmark for next-generation motion components.