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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

Silicon Nitride (SI3N4) is an ideal material for bearings. It has good wear and corrosion resistance, and great mechanical strength under high temperature. We can supply full ceramic and hybrid bearings products made by Silicon Nitride, Zirconia as well as SiC. Bearings balls are also available!

Related Products: Silicon Carbide BallSilicon Carbide Bearing

More details

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 C

180 C

Density

3.24g/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

Properties

Silicon Nitride Balls Specified for use in such high-technology industries such as full ceramics bearing, hybrid bearings, aerospace, and defense; Silicon Nitride ceramic balls feature these advanced properties:

* Excellent corrosion resistance withstands attack from harsh chemicals and demanding environmental conditions.

* Lightweight Silicon Nitride weighs 60% less than steel which reduces centrifugal force, skidding and wear under high speed and acceleration.

* Superior Surface Finish, Ra 0.17-0.25 microinches may extend L-10 life to as much as 10 times that of steel bearings.

* High-Temperature Hardness is twice that of steel. These all-ceramic balls retain their strength and hardness up to 1800 degrees F.

* Silicon Nitride is further characterized by its low density of 3.2 g/cc, the high flexural strength of 1.0 GPa, and fracture toughness of 6 MPa/M2.

Application

Si3N4 bearing balls have already been applied in automobiles, rockets high-speed engines, equipment working in the corrosive environment and some performance model cars. As the price of ceramic materials decreased, it could have more applications.



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