Product Description

The Role of EV Motor Ceramic Balls Silicon Nitride in Electric Vehicle Bearings

Understanding Silicon Nitride in EV Bearings

Key Benefits of Silicon Nitride Ceramic Balls

1. Electrical Insulation: One of the most significant advantages of silicon nitride ceramic balls is their inherent electrical resistivity. Unlike traditional steel bearings, which can suffer from electrical arcing due to charge build-up, silicon nitride prevents this phenomenon, enhancing the longevity and reliability of the bearings.
2. Reduced Friction: Silicon nitride ceramic balls are extremely smooth, leading to lower friction in the bearing assembly. This reduction in friction not only improves the efficiency of the motor but also reduces the need for frequent lubrication.
3. Lightweight and Durable: Weighing approximately 60% less than steel, silicon nitride ceramic balls contribute to a lighter overall vehicle weight, which can improve the vehicle's speed and efficiency. Additionally, their hardness ensures rolling efficiency and durability, even under shock loads.
4. Corrosion Resistance: Silicon nitride offers excellent resistance to corrosion and chemicals, making it suitable for various environmental conditions.
5. High-Temperature Resistance: Capable of withstanding extreme temperatures, silicon nitride ceramic balls maintain their integrity and performance even in high-heat applications.

The Impact on Electric Vehicle Performance

Case Studies and Industry Insights

Challenges and Considerations

●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 :

Exhibition & Partner

Case

Ship to South Korea

Ship to Spain

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).

Guangzhou Zoli 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 milling technologies, we have established ourselves as a leader in the field of precision particle size reduction and material processing.

Zoli Currently operates two state-of-the-art R&D and manufacturing facilities located in Guangzhou, employing over 60 skilled professionals and covering a total production area of more than 6,000 square meters. Our product portfolio includes advanced milling equipment designed for applications in materials science, pharmaceuticals, ceramics, metallurgy, and nanotechnology. They are widely utilized across a diverse range of industries, including renewable energy, telecommunications, consumer electronics, and biomedical devices. 

At our core, we are committed to delivering high-performance, reliable, and innovative milling solutions that meet the evolving needs of our customers. By combining superior engineering with a customer-centric approach, we strive to build long-term partnerships and contribute to the advancement of material science and technology worldwide.