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High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride
High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride
High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride
High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride
High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride
High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride
High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride
High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride
High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride
High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride
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
Surface :
Polishing Finish
Coefficient Of Thermal Expansion :
3.2 x 10^-6 /K
Fracture Toughness :
6 MPa·m1/2
Hardness :
HRA 92-95
Thermal Conductivity :
25 W/mK
Tolerance :
±0.0001mm
Type :
silicon nitride bearings
Size :
1mm - 25.4mm
Usage :
silicon nitride bearings
Maximum Operating Temperature :
1200°C
Density :
3.2 g/cm3
Electrical Insulation :
Yes
Material :
Silicon Nitride
Corrosion Resistance :
Excellent
Young'S Modulus :
310 GPa
Description

Product Description

High-Speed CNC Bearing Balls: Silicon Nitride for Machine Tool Spindles

In the fast-paced world of manufacturing, precision and efficiency are paramount. Machine tool spindles play a crucial role in ensuring these qualities are met, and the choice of bearing balls significantly impacts their performance. Enter silicon nitride bearing balls, a high-performance solution that revolutionizes how machine tool spindles operate at high speeds. This article delves into the advantages of silicon nitride bearing balls, exploring their unique properties and applications in various industries.

What Are Silicon Nitride Bearing Balls?

Silicon nitride (Si3N4) is a ceramic material known for its exceptional hardness, lightweight nature, and resistance to heat and corrosion. These properties make silicon nitride an ideal material for manufacturing bearing balls used in high-speed CNC machine tool spindles. Unlike traditional steel bearing balls, silicon nitride balls offer superior performance, longevity, and reliability, making them a preferred choice in demanding applications.

Key Benefits of Silicon Nitride Bearing Balls

Enhanced Performance

Silicon nitride bearing balls outperform traditional steel balls due to their tailored material properties and finishing. They are 58% lighter and 121% harder than steel alloys, which results in decreased friction and reduced wear. This means that machine tool spindles can operate at higher speeds with minimal lubrication, leading to lower operating costs and extended service life.

Thermal and Electrical Resistance

One of the standout features of silicon nitride is its low thermal expansion—76% lower than steel—which ensures stability and precision in high-temperature environments. Additionally, silicon nitride balls are electrically resistant, making them suitable for applications where electrical insulation is necessary, such as electric motor shaft bearings.

Corrosion Resistance

Silicon nitride's corrosion-resistant properties allow it to function effectively in harsh environments, including those with high operating temperatures or corrosive elements. This durability translates to longer part life and higher reliability in industrial applications.

Applications of Silicon Nitride Bearing Balls

Silicon nitride bearing balls are used across various industries, each benefiting from their unique properties:

  • Aerospace: In aerospace applications, silicon nitride balls are used in satellites, jet engines, and wing flap ball screw actuators. Their lightweight nature and resistance to extreme temperatures make them ideal for such demanding environments.
  • Automotive: Electric vehicle traction motor shaft bearings and fuel injection systems benefit from the electrical insulation and reduced friction provided by silicon nitride balls.
  • Medical: Dental drills utilize silicon nitride micro-bearings due to their precision and durability.
  • Renewable Energy: Wind turbine engines rely on silicon nitride balls for their corrosion resistance and long service life.
  • Industrial: Machine tools spindles are a primary application, where high-speed performance and reduced maintenance costs are crucial.

Silicon Nitride vs. Traditional Steel Bearing Balls

Research has shown that the temperature rise in silicon nitride ball bearings is significantly lower than in steel ball bearings, especially at high speeds. This is due to the reduction of gyroscopic moments and centrifugal forces acting on the balls, thanks to the low density of silicon nitride. As a result, silicon nitride bearings experience 30 to 50 percent less frictional loss, even with low-cost lubrication methods like grease or oil-air.

Why Choose Silicon Nitride Bearing Balls?

The choice of bearing balls can dramatically affect machine tool spindle performance. Silicon nitride balls offer several advantages over traditional steel balls:

  • Longer Service Life: The reduced friction and wear result in extended service life, minimizing downtime and maintenance costs.
  • High-Speed Capability: Silicon nitride balls allow spindles to operate at higher speeds with greater precision.
  • Reduced Operating Costs: The need for less lubrication and maintenance translates to lower overall operating costs.
  • Versatility: Suitable for various applications, from aerospace to industrial, silicon nitride balls are adaptable to multiple 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

High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon NitrideHigh Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride

●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

High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride

Exhibition & Partner

High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride

Case

Ship to South Korea

High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon NitrideHigh Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride

Ship to Spain

High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon NitrideHigh Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride

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).

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

High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon NitrideHigh Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride

●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

High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride

Exhibition & Partner

High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride

Case

Ship to South Korea

High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon NitrideHigh Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride

Ship to Spain

High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon NitrideHigh Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride

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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High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride

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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
High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride
High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride
High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride
High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride
High Speed CNC Bearing Lead Milling Media Si3n4 Ceramic Balls Silicon Nitride

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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