Product Categories Ceramic Bearings Ceramic Balls Silicon Nitride Grinding Balls



Silicon Nitride balls available in sizes from 1mm to 60mm
Conforms to ASTM Specification F2094; Class I and Class II materials.
Outside Diameter
Number  kg

Optimize with LILY Bearing's Silicon Nitride Grinding Balls - Superior wear resistance & efficiency.


Mechanical Properties Si3N4
Density 3.2g/cm³
Color black (Grayish)
Content >95%
Tolerance ±0.3mm
Compressive Strength 3200 MPa
Hardness 75-80 HRC
Maximum Use Temperature (no load) 1000°C (1830°F)
Thermal Conductivity 29 W/m°K
Coefficient of Thermal Expansion 3.3(1.8) 10⁻⁶/°C (10⁻⁶/F)


  • High Strength: Withstands heavy use, backed by a bending strength of 600-700 MPa.

  • Wear and Corrosion Resistance: Enhanced longevity in harsh conditions, thanks to its excellent abrasion resistance and corrosion resistance.

  • Heat Resistant: Performs up to 1000 ℃, ideal for high-temperature applications.

  • Electrical Insulation: Non-conductive, ensuring safety in electrical environments.

  • Non-Magnetic: Suitable for applications where magnetic interference is a concern.

  • Lightweight: 60% lighter than steel, with a density of 3.2 g/cm³, reducing machinery load.

  • Low Thermal Expansion: Minimal size change with temperature, coefficient of 3.3 x 10^-6 /℃.

  • Cost-Effective: Durable nature leads to lower operation costs over time.

  • High Hardness: Rated at 78HRC, capable of crushing and refining hard metal powders.

  • Compatibility: Works well with Silicon Nitride, Nylon, or Teflon (PTFE) grinding jars, adaptable for hard, abrasive samples.


Silicon Nitride Grinding Balls are used in a wide range of applications, such as:
  • Electro Plating and Polishing
  • Food Processing
  • Vacuum Applications
  • Fiber Processing
  • Conveyor Systems
  • Medical Equipment
  • Photo Processing
  • Electronics and Computer Assembly
  • Wet Applications


Silicon Nitride Grinding Balls, crafted from over 95% pure silicon nitride, outdo traditional grinding materials with better purity, efficiency, and longer life. Their hardness and wear resistance reduce grinding wear, enhancing efficiency. Their robust chemical stability makes them ideal for use in corrosive environments, including optics, gemstones, and ceramics.

Why Silicon Nitride Grinding Balls

Switch to lly Bearing for silicon Nitride Grinding Balls that ofer litle wear and big value.They resist wear and corrosion, making them a top choice foiyour grinding. Light yet hard, they reduce contamination and keep your work pure and efficient.Enjoy signiticant cost savings with our Slicon Grinding Nitride Bals, designed to eliminate the ned forfine grinding and polishing. for precise ceramicballs, switch to Silicon Nitride Balls and HiP Silicon Nitride Balls.