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SC0910 Silicon Nitride Bearing Balls

Catalog No. SC0910
Size Diameter: 1~30mm
Material Si3N4 Ceramic
Purity 97%~99%
Density 3.44g/cm3

 

Silicon Nitride Bearing Ball Description

Silicon Nitride Bearing BallSilicon 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 Ball Specifications 

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

 

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

 

 

 

 

Silicon Nitride Bearing Ball Applications

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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SC0910 Silicon Nitride Bearing Balls
Average rating:  
 1 reviews
by John Asselin on SC0910 Silicon Nitride Bearing Balls

Great deal, will buy again