Product Specification

Product Description

Electrically Insulating Ceramic Balls Prevent Arcing in High-Voltage Systems

Understanding Electrical Arcing and Its Implications

The Role of Ceramic Balls in Preventing Arcing

• Superior Electrical Insulation: Zirconia ceramic balls offer exceptional electrical insulation, with resistance values ranging from 10^8 to 10^14 Ω·cm. This makes them perfect for high-voltage applications where preventing short circuits is crucial.
• High Wear Resistance: These ceramic balls are known for their extreme hardness and wear resistance, often compared to diamonds. This ensures longevity and reliability in high-stress environments.
• Temperature and Chemical Resistance: With a melting point of around 2700°C, zirconia ceramic balls can withstand high temperatures without degrading. They also resist chemical corrosion, making them suitable for harsh industrial environments.

Advantages of Electrically Insulating Ceramic Balls

1. Enhanced System Performance: By preventing arcing, ceramic balls help maintain the integrity of high-voltage systems, ensuring consistent performance and reducing downtime.
2. Increased Equipment Lifespan: The durability and wear resistance of ceramic balls mean that components last longer, reducing the need for frequent replacements.
3. Energy Efficiency: Ceramic balls reduce friction and energy loss, contributing to more efficient system operations.
4. Cost Savings: While the initial investment in ceramic balls may be higher, the long-term savings from reduced maintenance and replacement costs make them a cost-effective solution.

Applications of Ceramic Balls in High-Voltage Systems

• Bearings in Motors: Ceramic hybrid bearings, which incorporate ceramic balls, are used in motors with variable frequency drives (VFDs) to prevent arcing and extend motor life.
• High-Voltage Capacitors: As seen with KEMET's high-voltage ceramic capacitors, ceramic balls help in arc protection, enabling smaller case sizes and higher capacitance values.
• Industrial Equipment: In sectors like aerospace and automotive, ceramic balls are used in high-performance bearings and mechanical seals, offering robustness and reliability.

Future Prospects and Innovations

Environmental Impact and Sustainability

●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:

● Ball Sizes/Grade :

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FAQ

1. What sizes and tolerances are available?

• 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).

2. 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.

3. How do I choose the right Si3N4 balls for my application?

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).