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Guangzhou Zhongli Technology Co., Ltd

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City:guangzhou

Country/Region:china

Contact Person:MrsAin Qiu

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China Electrically Insulating Ceramic Si3n4 Balls Grinding Media OEM wholesale

Electrically Insulating Ceramic Si3n4 Balls Grinding Media OEM

Name: Electrically Insulating Ceramic Si3n4 Balls Grinding Media OEM
Brand: Zhongli
Price: 1 USD

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Brand Name :Zhongli

Model Number :SNB-01

Certification :CE ISO

Place of Origin :China

MOQ :1kg

Payment Terms :L/C,T/T,Western Union

Supply Ability :50-200 ton/month

Delivery Time :within 15days

Packaging Details :barrel

Surface Finish :Polished

Corrosion Resistance :Excellent

Usage :silicon nitride bearings

Type :silicon nitride bearings

Electrical Insulation :Excellent

Chemical Inertness :High

Temperature Resistance :Up to 1200°C

Application :Precision Bearings, Valves, Pumps, and other High-Temperature Applications

Density :3.2 g/cm3

Coefficient Of Thermal Expansion :3.2 x 10^-6 /K

Color :Grey

Thermal Conductivity :25 W/mK

Material :Silicon Nitride

Size :1mm - 50mm

Hardness :HRA 92-94

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Product Description

Electrically Insulating Ceramic Balls Prevent Arcing in High-Voltage Systems

In the ever-evolving world of high-voltage systems, the demand for reliable, efficient, and safe components is paramount. One such innovation that has been making waves is the use of electrically insulating ceramic balls. These advanced materials are not only preventing arcing but also enhancing the overall performance of high-voltage systems. This article delves into the significance of electrically insulating ceramic balls, their advantages, and their transformative impact on high-voltage systems.

Understanding Electrical Arcing and Its Implications

Electrical arcing is a phenomenon where an electrical discharge jumps between two points, potentially causing significant damage to equipment. In high-voltage systems, arcing can lead to equipment failure, increased maintenance costs, and even hazardous situations. Traditional materials, such as steel, often fail to provide adequate insulation, leading to frequent arcing issues.

The Role of Ceramic Balls in Preventing Arcing

Ceramic balls, particularly those made from zirconia and silicon nitride, have emerged as a game-changer in preventing electrical arcing. Their electrically insulating properties make them ideal for applications in high-voltage systems.

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

The use of electrically insulating ceramic balls in high-voltage systems offers numerous advantages:

Enhanced System Performance: By preventing arcing, ceramic balls help maintain the integrity of high-voltage systems, ensuring consistent performance and reducing downtime.
Increased Equipment Lifespan: The durability and wear resistance of ceramic balls mean that components last longer, reducing the need for frequent replacements.
Energy Efficiency: Ceramic balls reduce friction and energy loss, contributing to more efficient system operations.
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

Ceramic balls are versatile and find applications across various 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

The future of electrically insulating ceramic balls is promising, with ongoing research and development aimed at enhancing their performance. Innovations in material science are expected to unlock new applications, particularly in emerging fields like sustainable energy and advanced electronics.

Environmental Impact and Sustainability

As industries shift towards sustainable practices, the use of ceramic balls aligns with green manufacturing goals. Their long service life and energy-saving properties contribute to reduced environmental impact, supporting global sustainability initiatives.

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

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).

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