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SC0910 Silicon Nitride Bearing Balls Maximize
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SC0910 Silicon Nitride Bearing Balls

Catalog No.SC0910
SizeDiameter: 1~30mm
MaterialSi3N4 Ceramic
Purity97%~99%
Density3.44g/cm3

Stanford Advanced Materials (SAM) can supply full ceramic parts made by Silicon Nitride as well as Silicon Carbide. Feel free to contact us for customized products.

Related Products: Silicon Nitride Protection Tubes for Thermocouples, Silicon Nitride Nozzles, Nozzle Covers, Silicon Nitride Forming Rollers, Silicon Nitride Bearings Rollers, Silicon Nitride Welding Pins.

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Description of Silicon Nitride Bearing Balls

Silicon nitride is a man-made compound synthesized through several different chemical reaction methods. Parts are pressed and sintered by well-developed methods to produce a ceramic with a unique set of outstanding properties. Silicon Nitride ceramic is ideal for bearing parts. Compared with steel, high-performance silicon nitride bearings balls have better mechanical properties under high temperature and could survive from most of the corrosive chemicals.

Silicon Nitride Bearing Balls

Comparison of Si3N4 Ceramic and Steel for Bearing Balls

 

Si3N4

Steel

Working temperature

800 ℃

180 ℃

Density

3.21g/cm3

7.8 g/cm3

Thermal expansion coeff.

3.4×10-6

12.5×10-6

Hardness, HV

1500

About 750

Young’s Module

320GPa

208GPa

Corrosion resistance

Good

Poor

Thermal conductivity

Poor

Good

Magnetism

No

Yes

Wear resistance

Excellent

Good

 

Specifications of Silicon Nitride Bearing Balls

GPSN

Property

Unit

 

Color

 

Grey

Mechanical Properties

  

Density

g/cm3

3.21

Compressive Strength

MPa

3000

Flexural Strength

MPa

800

Weibull-Modulus m

 

15

Fracture Toughness KIc

MPa m^1/2

6.5

Young‘s Modulus E

GPa

320

Poisson Ratio

 

0.28

Hardness Vickers (HV 1)

GPa

16

Thermal Properties

Maximum Temperature

Inert Gas

°C

1200

Air

°C

1100

Thermal Conductivity

 

25

@ 20°C

W/mK

28

@ 1000

W/mK

16

Thermal Expansion

20–100°C

10-6/K

2

20–1000°C

10-6/K

3.5

Thermal Shock parameter R1

K

600

Thermal Shock parameter R2

W/mm

15

Electrical Properties

Resistivity at 20°C

Ωcm

10^12

Resistivity at 800°C

Ωcm

10^7

Dielectric constant

1 MHz

6


Applications of Silicon Nitride Bearing Balls

Silicon Nitride can make products including:

Advanced ceramic tubes

Bearing rollers

Ceramic cutting materials

Cyrol bearing rollers

Nozzles

Seal rings

Tube forming tools

Mechanical engineering special applications



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