MachineU > China Products
Self Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mm
Self Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mm
Self Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mm
Self Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mm
Self Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mm
Self Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mm
Self Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mm
Self Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mm
Specifications
Brand Name :
Zhongli
Model Number :
SNB-01
Certification :
CE ISO
Place of Origin :
China
MOQ :
1kg
Supply Ability :
50-200 ton/month
Delivery Time :
within 15days
Packaging Details :
barrel
Wear Resistance :
High
Tolerance :
±0.001mm
Usage :
silicon nitride bearings
Electrical Insulation :
Excellent
Thermal Conductivity :
25 W/mK
Max Operating Temperature :
1200℃
Color :
Black
Diameter :
1mm-50mm
Density :
3.2 g/cm3
Type :
silicon nitride bearings
Chemical Inertness :
Excellent
Coefficient Of Thermal Expansion :
3.2 x 10^-6/℃
Surface Finish :
Polished
Corrosion Resistance :
Excellent
Material :
Silicon Nitride
Description

Product Description

Self-Lubricating Silicon Nitride Balls: Reducing Friction Without Grease

In the world of advanced machinery and precision engineering, reducing friction is a top priority. Traditional bearings often rely on grease or oil for lubrication, but what if there was a way to eliminate the need for these substances? Enter self-lubricating silicon nitride balls. These innovative components are revolutionizing industries by reducing friction without the use of grease, offering significant advantages in terms of durability, efficiency, and environmental impact.

Understanding Silicon Nitride Balls

Silicon nitride (Si3N4) ceramic balls are a marvel of modern material science. Made from silicon nitride powder and refined at high temperatures, these balls are known for their exceptional properties:

  • High Strength and Wear Resistance: Silicon nitride balls boast high strength, making them resistant to wear and tear, which is crucial for high-speed operations.
  • Temperature and Corrosion Resistance: With a high resistance to temperature fluctuations and corrosion, they are suitable for a wide range of environments, including chemical and high-temperature applications.
  • Lightweight: With a density of only 3.2 g/cm³, they are less than half the weight of steel, reducing the centrifugal force during operation.
  • Self-Lubricating: Most notably, these balls have self-lubricating properties, which means they can operate efficiently without the need for additional lubricants like grease or oil.

The Benefits of Self-Lubricating Silicon Nitride Balls

1. High-Speed Performance

Silicon nitride balls are ideal for high-speed applications due to their lightweight nature and reduced centrifugal force. This allows for higher limit speeds compared to traditional steel balls, making them perfect for industries that require rapid and precise movements, such as aerospace and electronics.

2. Extended Service Life

The durability of silicon nitride balls translates to a longer service life, often more than five times that of steel ball bearings. This longevity reduces the frequency of replacements and maintenance, leading to lower operational costs.

3. Versatility Across Temperature Ranges

These ceramic balls have a small coefficient of thermal expansion, meaning they are less affected by temperature changes. This makes them suitable for use in extreme temperature environments, from the cold of space to the heat of industrial furnaces.

4. Environmental and Operational Cleanliness

By eliminating the need for grease or oil, silicon nitride balls reduce the risk of contamination in high-vacuum or high-cleanliness environments. This is particularly beneficial in industries like semiconductor manufacturing and food processing, where contamination can lead to significant issues.

5. Corrosion Resistance

Silicon nitride balls exhibit excellent resistance to acids, alkalis, and other corrosive chemicals, making them suitable for use in harsh chemical environments. This property is especially valuable in the chemical industry, where equipment is frequently exposed to corrosive substances.

Applications of Silicon Nitride Balls

The unique properties of silicon nitride balls make them suitable for a variety of applications across several industries:

  • Aerospace: Used in aircraft engines and gyroscopes, silicon nitride balls provide reliability and reduced maintenance needs in critical systems.
  • Automotive: In electric vehicles, they are used in electric motors and hybrid bearings to enhance efficiency and lifespan.
  • Industrial Manufacturing: Essential in semiconductor manufacturing and metalworking tools, they ensure smooth operations under high-speed and low-lubrication conditions.
  • Renewable Energy: In wind turbines, they handle large loads and stresses, offering durability and reducing downtime.

Silicon Nitride vs. Steel Balls: A Comparative Analysis

When comparing silicon nitride balls to traditional steel balls, several key differences emerge:

  • Hardness and Wear Resistance: Silicon nitride balls have a hardness of about 1500 HV, significantly higher than steel, providing superior wear resistance.
  • Density: With a density of 3.2 g/cm³ compared to steel's 7.8 g/cm³, silicon nitride balls reduce the overall weight of the bearing assembly.
  • Thermal Expansion: The low thermal expansion coefficient of silicon nitride (3.4 x 10⁶/K) compared to steel (12.5 x 10⁶/K) makes it more stable under temperature variations.
  • Corrosion Resistance: Silicon nitride balls offer high resistance to corrosion, unlike steel, which can rust and degrade over time.

Challenges and Considerations

While silicon nitride balls offer numerous advantages, they are not without challenges. They may not perform well in highly acidic environments where they could generate flammable hydrogen gas. Therefore, it's crucial to evaluate the specific needs of each application to determine if Si3N4 ceramic balls are the right choice.
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

Self Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mmSelf Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mm

●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

Factory equipment

Self Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mm

Exhibition & Partner

Self Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mm

Case

Ship to South Korea

Self Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mmSelf Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mm

Ship to Spain

Self Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mmSelf Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mm

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).

Send your message to this supplier
Send Now

Self Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mm

Ask Latest Price
Product Detail
Brand Name :
Zhongli
Model Number :
SNB-01
Certification :
CE ISO
Place of Origin :
China
MOQ :
1kg
Supply Ability :
50-200 ton/month
Contact Supplier
Self Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mm
Self Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mm
Self Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mm
Self Lubricating Silicon Nitride Balls Lead Grinding Media 4mm 6mm 9mm

Guangzhou Zhongli Technology Co., Ltd

Verified Supplier
1 Years
guangzhou
Since 2017
Business Type :
Manufacturer, Exporter, Trading Company
Main Products :
Planetary Ball Mill Machine, Stirred Ball Mill, Roller Ball Mill
Employee Number :
80~110
Certification Level :
Verified Supplier
Discover similar products
View More

Find Similar Products By Category:

Supplier Homepage Products Silicon Nitride Balls
MachineU China Products
Contact Supplier
Submit Requirement