Silicon Nitride Grinding Ball Features:
1. High hardness, goodresistance, and long service life
2. High temperature resistance, maintaining high strength and hardness even at a high temperature of 1200℃
3. Low density and high densification
4. Self-lubricating never rusting
5. Low coefficient of themal expansion, high thermal shock resistance
6. Anticorrosion of acid and alk
7. Nonmagnetic and electrical insulation
8. At high temperatures, it does not adhere to the metal and hardly reacts
Silicon Nitride Grinding Ball Application:
1. Equipment such as ball mills, stirring mills, and vibration mills used in laboratories and production lines.
2. Fields such as crushing, grinding, or dispersing advanced ceramic powder materials, magnetic materials, non-metallic mineral materials, and pyrotechnic materials.
3. Ultra fine dispersion of high-end materials, especially in working conditions with extremelyhigh requirements for product purity and fineness.
Standard for Precision Ceramic Balls:
| Level | Roundness Standard (ΔRSw max.) |
Diameter Tolerance (VDws) |
Surface Roughness (Ra max.) |
Tolerance Standard for Diameter Within A Batch (VDwl max.) |
| G3 | 0.08 | 0.08 | 0.01 | 0.13 |
| G5 | 0.13 | 0.13 | 0.014 | 0.25 |
| G10 | 0.25 | 0.25 | 0.02 | 0.5 |
| G16 | 0.4 | 0.4 | 0.025 | 0.8 |
| G20 | 0.5 | 0.5 | 0.032 | 0.8 |
| G24 | 0.6 | 0.6 | 0.04 | 1.2 |
| G28 | 0.7 | 0.7 | 0.05 | 1.4 |
| G40 | 1 | 1 | 0.06 | 2 |
| G60 | 1.5 | 1.5 | 0.08 | 3 |
| G100 | 2.5 | 2.5 | 0.1 | 5 |
| G200 | 5 | 5 | 0.15 | 10 |
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Frequently Asked Questions
Why use silicon nitride grinding balls for ultra-fine milling? How do they prevent material contamination?
Silicon nitride (Si3N4) grinding balls feature ultra-high fracture toughness, extreme hardness, and low density (~3.2 g/cm³) compared to steel or zirconia media. Their self-lubricating properties and outstanding wear resistance ensure zero metallic contamination and minimal bead attrition during high-energy planetary, stirring, or ball milling. Operating smoothly up to 1200°C and immune to acids and alkalis, they maintain maximum purity in electronic ceramics, magnetic powders, and pharmaceutical dispersions.
Can I buy precision G3 to G28 silicon nitride ceramic balls in bulk? What sizes and grades are supplied by the manufacturer?
Yes, as a specialized advanced ceramic manufacturer, INNOVACERA supplies Si3N4 ceramic balls ranging from ultra-precision G3/G5 grades (surface roughness Ra ≤ 0.01 μm) for hybrid bearings and check valves to standard G10–G200 grades for industrial grinding mills. To request volume pricing or custom batch sizes, please submit your target precision grade, required diameter (mm or inch), quantity, and application conditions.
