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Precision Silicon Nitride Balls Ceramic Milling Media 8mm For Bearings
Precision Silicon Nitride Balls Ceramic Milling Media 8mm For Bearings
Precision Silicon Nitride Balls Ceramic Milling Media 8mm For Bearings
Precision Silicon Nitride Balls Ceramic Milling Media 8mm For Bearings
Precision Silicon Nitride Balls Ceramic Milling Media 8mm For Bearings
Precision Silicon Nitride Balls Ceramic Milling Media 8mm For Bearings
Precision Silicon Nitride Balls Ceramic Milling Media 8mm For Bearings
Precision Silicon Nitride Balls Ceramic Milling Media 8mm For Bearings
Specifications
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
Corrosion Resistance :
Excellent
Density :
3.2 g/cm3
Hardness :
9 Mohs
Material :
Silicon Nitride
Size :
1mm - 25.4mm
Surface Finish :
Ra 0.1 - 0.2 μm
Precision Grade :
G5 - G100
Coefficient Of Thermal Expansion :
3.2 x 10^-6/°C
Maximum Operating Temperature :
1200°C
Chemical Resistance :
Excellent
Surface :
Polishing Finish
Type :
silicon nitride bearings
Wear Resistance :
Excellent
Usage :
silicon nitride bearings
Electrical Insulation :
Excellent
Description

Product Description

NitroBalls Precision Silicon Nitride Spheres for Demanding Applications

Introduction

In the world of advanced engineering and manufacturing, precision is paramount. Whether it's aerospace, military, automotive, or other high-demand industries, the need for materials that can withstand extreme conditions is crucial. Enter NitroBalls Precision Silicon Nitride Spheres, a game-changer in the realm of ceramic precision balls. Known for their remarkable properties and versatility, these spheres are crafted to meet the demands of the most rigorous applications.

Understanding Silicon Nitride Spheres

Silicon nitride (Si3N4) is a ceramic material renowned for its exceptional strength and resistance to high temperatures and corrosive environments. Silicon nitride spheres, often used in bearings, exhibit low friction and high heat resistance, making them ideal for applications requiring durability and efficiency. Precision Plastic Ball Company is a leading manufacturer of these spheres, offering a wide range of sizes and grades to suit various industrial needs.

Key Properties of Silicon Nitride

  • High Heat Resistance: Silicon nitride spheres can retain their strength and hardness up to 1800°F, making them suitable for high-temperature applications.
  • Low Friction: The lightweight and hard ceramic nature of silicon nitride reduces skidding and wear under acceleration and high speeds.
  • Chemical Resistance: These spheres are extremely resistant to chemicals and corrosive elements, ensuring longevity in harsh environments.
  • Thermal Conductivity: With a moderate rate of thermal conductivity and low coefficient of thermal expansion, silicon nitride spheres help reduce cooling costs.
  • Non-Conductive: Ideal for electric motor shaft bearings, silicon nitride spheres are electrically non-conductive, making them suitable for AC/DC motors and generators.

Applications of NitroBalls Precision Silicon Nitride Spheres

The versatility of NitroBalls makes them suitable for a wide array of applications across various industries:

  1. Aerospace: Used in aircraft components due to their high strength and lightweight properties.
  2. Military & Defense: Employed in military applications, including the NASA STS space shuttle program, for their durability and resistance to extreme conditions.
  3. Automotive: Utilized in hybrid and full ceramic bearings, as well as in automotive engine parts, to enhance performance and longevity.
  4. Metalworking Tools: Their hardness and resistance to wear make them ideal for metalworking applications.
  5. Gas Turbines: Silicon nitride spheres are perfect for high-temperature environments found in gas turbines.

Advantages of NitroBalls Precision Silicon Nitride Spheres

NitroBalls offer several advantages over traditional materials, making them a preferred choice for demanding applications:

  • Longer Service Life: The low friction and high wear resistance of silicon nitride spheres contribute to extended bearing service life and reduced re-lubrication intervals.
  • Lightweight: Weighing 60% less than steel, silicon nitride spheres reduce the overall weight of assemblies, enhancing efficiency and performance.
  • Minimal Lubrication Required: Their non-porous nature means less lubrication is needed, simplifying maintenance and reducing costs.
  • High Elasticity and Fracture Toughness: These properties ensure that silicon nitride spheres can withstand high impact and shock environments.

Challenges and Considerations

While silicon nitride spheres offer numerous benefits, there are some challenges to consider:

  • Toxic Off-Gassing: When heated to decomposition, there is a risk of toxic off-gassing, which requires careful handling and application.
  • Acidic Conditions: Silicon nitride spheres may generate flammable hydrogen gas under highly acidic conditions, necessitating caution in specific environments
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

Precision Silicon Nitride Balls Ceramic Milling Media 8mm For BearingsPrecision Silicon Nitride Balls Ceramic Milling Media 8mm For Bearings

●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

Precision Silicon Nitride Balls Ceramic Milling Media 8mm For Bearings

Exhibition & Partner

Precision Silicon Nitride Balls Ceramic Milling Media 8mm For Bearings

Case

Ship to South Korea

Precision Silicon Nitride Balls Ceramic Milling Media 8mm For BearingsPrecision Silicon Nitride Balls Ceramic Milling Media 8mm For Bearings

Ship to Spain

Precision Silicon Nitride Balls Ceramic Milling Media 8mm For BearingsPrecision Silicon Nitride Balls Ceramic Milling Media 8mm For Bearings

FAQ

1. Are silicon nitride balls brittle?

While ceramics are generally brittle, Si3N4 has high fracture toughness (6-7 MPa·m½) compared to other ceramics like alumina. Properly manufactured balls resist cracking under mechanical stress.

2. Can Si3N4 balls replace steel balls in bearings?

Yes! They outperform steel in:

  • Speed: Lower mass reduces friction and heat buildup.

  • Lifespan: Up to 10x longer service life in harsh conditions.

  • Maintenance: Self-lubricating properties reduce grease dependency.

3. What grades of silicon nitride balls are available?

  • Standard (commercial-grade): For general industrial use.

  • High-purity (HIP’ed): Hot isostatically pressed for zero porosity (best for aerospace/medical).

  • SiAlON-modified: Enhanced thermal shock resistance.

4. How are silicon nitride balls manufactured?

  1. Powder pressing – Si3N4 powder is compacted into spherical shapes.

  2. Sintering – Fired at high temperatures (1,700–1,800°C) for density.

  3. HIP (optional) – Hot isostatic pressing eliminates microvoids.

  4. Precision grinding/lapping – Achieves sub-micron sphericity (Grade 5-100).

5. 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).

6. 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.

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Precision Silicon Nitride Balls Ceramic Milling Media 8mm For Bearings

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Product Detail
Brand Name :
Zhongli
Model Number :
SNB-01
Certification :
CE ISO
Place of Origin :
China
MOQ :
1kg
Payment Terms :
L/C,T/T,Western Union
Contact Supplier
Precision Silicon Nitride Balls Ceramic Milling Media 8mm For Bearings
Precision Silicon Nitride Balls Ceramic Milling Media 8mm For Bearings
Precision Silicon Nitride Balls Ceramic Milling Media 8mm For Bearings
Precision Silicon Nitride Balls Ceramic Milling Media 8mm For Bearings

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
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