2000N EV Motor Ceramic Si3n4 Silicon Nitride Balls For Electric Vehicle Bearings
Price:
Negotiable
MOQ:
1kg
Delivery Time:
within 15days
Brand:
Zhongli
Product Description
2000N EV Motor Ceramic Si3N4 Silicon Nitride Balls For Electric Vehicle Bearings
Superior Performance for Electric Vehicle Applications
Silicon nitride (Si3N4) ceramic balls represent a breakthrough in bearing technology for electric vehicles, offering unmatched durability, efficiency, and reliability in demanding EV motor applications.
Key Advantages of Silicon Nitride Ceramic Balls
- Electrical Insulation: Prevents electrical arcing and bearing damage from charge buildup
- Reduced Friction: Ultra-smooth surface minimizes energy loss and extends lubrication intervals
- Lightweight Construction: 60% lighter than steel for improved vehicle efficiency
- Extreme Durability: Maintains performance under shock loads and harsh conditions
- Corrosion Resistance: Withstands aggressive environments and chemicals
- High-Temperature Stability: Performs reliably in extreme heat applications
Material Property Comparison
| 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 |
Technical Specifications
| 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) |
Available Sizes and Grades
| 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 |
Manufacturing Capabilities
Global Distribution Network
Frequently Asked Questions
What sizes and tolerances are available?
- Diameter range: 0.5mm to 50mm (custom sizes possible)
- Sphericity: As low as 0.1 µm (Grade 5 for ultra-precision bearings)
- Surface finish: Ra < 0.02µm (mirror polish for low friction)
Are silicon nitride balls FDA-approved for medical use?
Yes! Si3N4 is biocompatible (ISO 6474-1) and used in spinal implants, dental devices, and joint replacements due to its antibacterial properties.
How do I choose the right Si3N4 balls for my application?
Consider these factors:
- 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)
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Guangzhou Zoli Technology Co.,Ltd.
Location
Room 702A, No. 585, Airport Road, Tangjing Street, Baiyun District, Guangzhou City, Self-compiled 2341
Contact Person
Ain Qiu