en

Grinding Balls

Most Common Diameters: 30, 40, and 50 mm

ESTCOM's grinding balls are made from high-quality alumina (Al2O3), offering exceptional durability and performance for a range of industrial applications. With a hardness of 78 HRC, they are ideal for grinding, milling, and processing in demanding environments such as ceramics, metallurgy, and mining. These grinding balls are designed to withstand temperatures up to 1600°C, ensuring reliable performance in high-temperature operations. Their low water absorption and high compressive strength make them suitable for use in both wet and dry grinding processes. Discover ESTCOM's grinding balls for efficient, high-performance industrial grinding solutions.

  • Al2O3 Content: 95 %
  • Bulk Density: 3.7 g/cm³
  • Water Absorption: Less than 0.05 %
  • Bending Strength: 300 MPa
  • Compressive Strength: 2000 MPa
  • Hardness: 78 HRC / Mohs 9
  • Maximum Operating Temperature: 1600°C
  • Thermal Conductivity: 20 W/mK at 100°C
  • Measured Electrical Resistance: 5.107 Ω x m at 700°C
  • Dielectric Strength: 30 kV ef/mm at 20°C
  • Dielectric Constant: 12 at 10 MHz and 20°C