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Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill
Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill
Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill
Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill
Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill
Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill
Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill
Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill
Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill
Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill
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
Application :
High-precision bearings, valves, pumps, and other mechanical components
Electrical Insulation :
Excellent
Wear Resistance :
Excellent
Usage :
silicon nitride bearings
Maximum Operating Temperature :
1200°C
Chemical Stability :
Excellent
Size :
1mm-50mm
Hardness :
9 (Mohs)
Surface :
Polishing Finish
Material :
Silicon Nitride
Thermal Conductivity :
30 W/mK
Surface Finish :
Polished
Coefficient Of Thermal Expansion :
3.2 x 10^-6 /K
Type :
silicon nitride bearings
Magnetic Properties :
Non-magnetic
Description

Product Description

Low Thermal Expansion Si3N4 Balls: Stability in High-Temperature Environments

In the realm of advanced materials, Silicon Nitride (Si3N4) balls have emerged as a pivotal component in high-temperature applications. Known for their low thermal expansion and exceptional stability, these ceramic balls are revolutionizing industries that demand durability and efficiency under extreme conditions.

Understanding Silicon Nitride (Si3N4) Balls

Silicon Nitride (Si3N4) is an advanced ceramic material renowned for its superior mechanical properties. These balls are crafted through a meticulous manufacturing process involving sintering, which enhances their durability and performance. The key attributes of Si3N4 balls include:

  • High Hardness and Strength: Si3N4 balls are significantly harder than steel, making them incredibly durable.
  • Low Density: Lighter than steel, they reduce the overall weight of the bearing.
  • High Resistance to Wear and Corrosion: Ideal for harsh environments where durability is paramount.

These properties are achieved through precise manufacturing processes, ensuring reliability across various applications.

Benefits of Low Thermal Expansion Si3N4 Balls

High-Temperature Resistance

One of the most significant advantages of Si3N4 balls is their ability to withstand extreme temperatures, up to 1000°C. This makes them ideal for high-speed, high-temperature applications such as gas turbines and electric motors, where traditional materials might fail.

Low Friction and High Speed

Si3N4 balls offer reduced friction compared to steel, enabling high-speed operations with less heat generation. This characteristic is particularly beneficial in industries relying on precision machinery, ensuring smooth and efficient rotation.

Wear Resistance and Longevity

The wear resistance of Si3N4 balls surpasses that of steel, maintaining their shape and function even after prolonged use in challenging environments. This results in longer-lasting bearings, reducing the need for frequent replacements and maintenance.

Lightweight and Low Centrifugal Force

Due to their low density, Si3N4 balls are much lighter than steel, reducing centrifugal force during rotation. This allows for higher speeds without compromising bearing stability, making them ideal for high-speed machinery.

Non-Conductive Properties

Si3N4 ball bearings are non-conductive, crucial for applications requiring electrical insulation, such as electric motors and generators. This prevents electrical corrosion, protecting bearings in hybrid bearings used in electric vehicles.

Corrosion Resistance

Si3N4 balls exhibit excellent corrosion resistance, making them suitable for industries dealing with corrosive substances, such as aerospace, military, and chemical processing.

Applications of Si3N4 Ball Bearings

Aerospace and Military

In aerospace and military applications, Si3N4 bearings reduce maintenance needs in critical systems, improving the reliability of equipment like aircraft engines and defense systems.

Automotive and Electric Vehicles

In the automotive sector, particularly electric vehicles, Si3N4 balls are used in electric motors and hybrid bearings. Their lightweight nature increases component efficiency, while their thermal properties extend the lifespan of parts.

Industrial and Manufacturing

In high-precision industrial equipment like semiconductor manufacturing and metalworking tools, Si3N4 bearings ensure smooth and efficient operations under low lubrication conditions and at high speeds.

Renewable Energy

Si3N4 ball bearings in wind turbines offer the durability needed to handle large loads and high stresses associated with power generation, making them ideal for renewable energy applications.

Comparison Between Si3N4 Balls and Steel Balls

Performance Metrics

When comparing Si3N4 balls to steel balls, the differences are clear:

  • Hardness (HV): Si3N4 - 1500; Steel - 750
  • Density (g/cm³): Si3N4 - 3.21; Steel - 7.8
  • Thermal Expansion (10⁶/K): Si3N4 - 3.4; Steel - 12.5
  • Wear Resistance: Si3N4 - Excellent; Steel - Good
  • Corrosion Resistance: Si3N4 - High; Steel - Poor

Si3N4 bearings offer superior wear resistance, hardness, and corrosion resistance compared to steel, making them better suited for demanding applications.

Cost vs. Value

While Si3N4 balls may have a higher initial cost, their long-term value is evident through reduced maintenance, extended service life, and fewer replacements. These factors lead to a lower total cost of ownership over time, making them a smart investment for industries demanding high-speed and high-performance bearings.
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

Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball MillLow Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill

●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

Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill

Exhibition & Partner

Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill

Case

Ship to South Korea

Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball MillLow Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill

Ship to Spain

Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball MillLow Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill

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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Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill

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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
Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill
Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill
Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill
Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill
Low Thermal Expansion Si3N4 Lead Ball Bearing Balls High Temperature For Ball Mill

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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