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Insulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine Bearing
Insulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine Bearing
Insulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine Bearing
Insulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine Bearing
Insulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine Bearing
Insulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine Bearing
Insulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine Bearing
Insulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine Bearing
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
Chemical Inertness :
High
Applications :
High-precision bearings, valves, pumps, and other mechanical components
Shape :
Spherical
Electrical Insulation :
Excellent
Material :
Silicon Nitride
Coefficient Of Thermal Expansion :
3.2 x 10^-6 /K
Density :
3.2 g/cm3
Usage :
silicon nitride bearings
Hardness :
1400 - 1500 HV
Surface :
Polishing Finish
Type :
silicon nitride bearings
Surface Finish :
Ra 0.05 - 0.1 µm
Maximum Operating Temperature :
1200°C
Thermal Conductivity :
25 W/mK
Description

Product Description

The Future of Renewable Energy: Wind Turbine Bearing Balls Silicon Nitride

The renewable energy sector is rapidly evolving, with wind power emerging as a key player in the global shift towards sustainable energy solutions. At the heart of wind turbines, a critical component ensures the efficient operation and longevity of these massive machines: the bearing balls. Among the various materials used for these bearing balls, Silicon Nitride stands out for its remarkable properties.

Understanding Wind Turbine Bearings

Wind turbines rely on a variety of bearings to function effectively. These bearings are essential for supporting the turbine's rotating components and managing the immense loads generated by wind energy. The different types of bearings used in wind turbines include:

  • Main-Shaft Bearings: These are large bearings that handle the thrust and radial loads of the turbine's main shaft.
  • Slew Bearings: Used between nacelles and towers, these bearings facilitate the rotation of nacelles.
  • Hybrid Bearings: These bearings provide insulation against electric currents, reducing the risk of premature failures.

Each type of bearing plays a crucial role in the turbine's operation, and the choice of material for bearing balls can significantly impact performance.

The Advantages of Silicon Nitride Bearing Balls

Silicon Nitride bearing balls offer several advantages over traditional steel balls, making them ideal for wind turbines:

  1. Lightweight and Durable: Silicon Nitride is 58% lighter than steel alloys, which reduces the overall weight of the turbine components. Additionally, it is 121% harder, enhancing durability and resistance to wear.
  2. Superior Thermal Properties: With 76% lower thermal expansion, Silicon Nitride can withstand higher temperatures without deforming, making it suitable for high-speed generator shaft systems.
  3. Corrosion Resistance: Silicon Nitride is highly resistant to corrosion, ensuring longevity even in harsh environments.
  4. Electrical Insulation: The material's electrically resistant nature minimizes the risk of electrical erosion, a common issue in wind turbine bearings.
  5. Reduced Maintenance: Due to its smooth surface finish and lower lubrication requirements, Silicon Nitride bearing balls reduce maintenance needs and operating costs.

Applications of Silicon Nitride Bearing Balls

Silicon Nitride bearing balls are used in various applications beyond wind turbines, including:

  • Aerospace: In satellites, jet engines, and wing flap ball screw actuators.
  • Automotive: For electric vehicle traction motor shaft bearings and fuel injection systems.
  • Medical: In dental drills where precision and durability are crucial.
  • Industrial: In machine tools spindles where reduced wear and vibration are beneficial.

Why Silicon Nitride is the Future for Wind Turbines

Recent developments in wind turbine technology have highlighted the benefits of integrating high-performance ceramic ball hybrid bearings. Silicon Nitride balls, in particular, have been recognized for their ability to enhance rotor shaft speed from 30 RPM to 2000 RPM, thus increasing power generation. This advancement not only boosts efficiency but also extends the lifecycle of wind power plants, reducing replacement costs significantly.
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

Insulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine BearingInsulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine Bearing

●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

Insulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine Bearing

Exhibition & Partner

Insulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine Bearing

Case

Ship to South Korea

Insulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine BearingInsulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine Bearing

Ship to Spain

Insulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine BearingInsulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine Bearing

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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Insulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine Bearing

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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
Insulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine Bearing
Insulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine Bearing
Insulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine Bearing
Insulated Silicon Carbide Balls Lead Grinding Media For Wind Turbine Bearing

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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