Guangzhou Zhongli Technology Co., Ltd
| Payment Terms | L/C,T/T,Western Union |
| Supply Ability | 50-200 ton/month |
| Delivery Time | within 15days |
| Packaging Details | barrel |
| Coefficient Of Thermal Expansion | 3.2 x 10^-6/°C |
| Wear Resistance | Excellent |
| Thermal Conductivity | 30 W/mK |
| Corrosion Resistance | Excellent |
| Application | High-precision bearings, valves, pumps, and other mechanical components |
| Electrical Insulation | Excellent |
| Hardness | 9 (Mohs) |
| Material | Silicon Nitride |
| Maximum Operating Temperature | 1200°C |
| Surface Finish | Ra 0.1 - 0.2 μm |
| Chemical Inertness | Excellent |
| Size | 1mm - 25.4mm |
| Type | silicon nitride bearings |
| Usage | silicon nitride bearings |
| Surface | Polishing Finish |
| Brand Name | Zhongli |
| Model Number | SNB-01 |
| Certification | CE ISO |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C,T/T,Western Union | Supply Ability | 50-200 ton/month |
| Delivery Time | within 15days | Packaging Details | barrel |
| Coefficient Of Thermal Expansion | 3.2 x 10^-6/°C | Wear Resistance | Excellent |
| Thermal Conductivity | 30 W/mK | Corrosion Resistance | Excellent |
| Application | High-precision bearings, valves, pumps, and other mechanical components | Electrical Insulation | Excellent |
| Hardness | 9 (Mohs) | Material | Silicon Nitride |
| Maximum Operating Temperature | 1200°C | Surface Finish | Ra 0.1 - 0.2 μm |
| Chemical Inertness | Excellent | Size | 1mm - 25.4mm |
| Type | silicon nitride bearings | Usage | silicon nitride bearings |
| Surface | Polishing Finish | Brand Name | Zhongli |
| Model Number | SNB-01 | Certification | CE ISO |
| Place of Origin | China | ||
| High Light | Food Grade silicon nitride ceramic balls ，1mm silicon nitride ceramic balls ，1mm silicon carbide balls | ||
Product Description
| Property | Silicon Nitride (Si3N4) | Steel (440C) | Zirconia (ZrO2) | Alumina (Al2O3) |
|---|---|---|---|---|
| Density (g/cm³) | 3.2 | 7.8 | 6.0 | 3.9 |
| Hardness (HV) | 1,400–1,600 | 700–900 | 1,200–1,300 | 1,500–1,800 |
| Fracture Toughness (MPa·m½) | 6–7 | 15–20 | 7–10 | 3–4 |
| Compressive Strength (GPa) | 2.5–3.5 | 2.0–2.5 | 2.0–2.3 | 2.0–3.0 |
●Description:
Silicon Nitride Ceramic Ball is the most ideal bearing ball for bearing applications, due to the excellent properties of silicon nitride ceramics, it has many irreplaceable advantages comparing to traditional steel materials, such as: high mechanical strength, low wear loss, good self-lubrication, low density, high corrosion resistance, good electrical insulation etc.
Therefore, Silicon Nitride Balls are mostly used for some harsh working conditions: high speed/super speed bearings, high precision bearings, bearings in vacuum, high/low temperature bearings.
Moreover, Silicon Nitride Ceramic Balls can also used as valve ball or measurement balls in chemical pumps/high temperature pumps/metdering pumps.
●Physical Properties:
| Chemical Composition: | Si3N4≥95% |
| Bulk Density: | 3.2±0.05g/cm3 |
| Elastic Modulus: | 350GPa |
| Hardness Vickers: | 1870HV |
| Bending Strength: | 780MPa |
| Fracture Toughness: | 7.2MPa·m1/2 |
| Thermal Expansion Coefficient: | 3.2 10-6/K |
| Thermal Conductivity: | 25W/(m·K) |
● Ball Sizes/Grade :
| Size (mm) | Φ0.8-180 | |||
| Grade | Vdws | SPH | Vdwl | Ra |
| G3 | 0.05-0.08 | ≤0.08 | <0.13 | 0.01 |
| G5 | 0.08-0.13 | ≤0.13 | <0.25 | 0.014 |
| G10 | 0.15-0.25 | ≤0.25 | <0.5 | 0.02 |
| G16 | 0.2-0.4 | ≤0.4 | <0.8 | <0.025 |
| G20 | 0.3-0.5 | ≤0.5 | <1 | <0.032 |
| G100 | 0.4-0.7 | 0.4-0.7 | <1.4 | <0.0105 |
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FAQ
Diameter range: 0.5mm to 50mm (custom sizes possible).
Sphericity: As low as 0.1µm (Grade 5 for ultra-precision bearings).
Surface finish: Ra < 0.02µm (mirror polish for low friction).
Yes! Si3N4 is biocompatible (ISO 6474-1) and used in spinal implants, dental devices, and joint replacements due to its antibacterial properties.
Consider:
Load & speed requirements (dynamic/static stress).
Temperature range (Si3N4 excels in high heat).
Chemical exposure (resistant to most acids/alkalis).
Electrical insulation needs (non-conductive).
Company Details
Business Type:
Manufacturer,Exporter,Trading Company
Year Established:
2017
Employee Number:
80~110
Ecer Certification：
Verified Supplier
Guangzhou Zhongli Technology Co., Ltd. specializes in the development and production of high-performance metallic and non-metallic materials, as well as cutting-edge nanotechnology solutions for precision grinding and material processing. With a strong foundation in innovative grinding and mil... Guangzhou Zhongli Technology Co., Ltd. specializes in the development and production of high-performance metallic and non-metallic materials, as well as cutting-edge nanotechnology solutions for precision grinding and material processing. With a strong foundation in innovative grinding and mil...
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