Si3N4 ceramic has excellent properties such as high strength, good wear resistance, good corrosion resistance, high-temperature resistance, electrical insulation, and non-magnetic conductivity. Silicon Nitride bearing balls are an ideal product for the bearing industry, chemical industry, and valve industry.

Silicon nitride Performance

Item

Unit

Si3N4

Type

Gas pressure sintered

Density

g/cm3

3.2-3.3

Color

Black, Grey

Young Modulus

GPa

300~320

Vickers Hardness

GPa

15 – 17

Compressive Strength

MPa

2200

Bending Strength

MPa

600-1000

Thermal Conductivity

W/m.K

20-30

Thermal Expansion

10-6/°C

3.2

Max. Working Temp.

°C

1200

Volume Resistivity

Ω ·cm

> 1014

Dielectric Constant

6

Dielectric Strength

kV/mm

12

Fracture toughness

MPa·m1/2

5.0-7.0

*Tested at room temperature

*The above information is for comparison only. The exact characteristics will vary depending on the manufacturing method.

Specification of the Silicon Nitride bearing balls

Level: G5-G100

Specifications: Dia. 0.3mm – Dia. 140mm

 

Hot isostatic pressing silicon nitride ball


Hot isostatic pressing (HIP or HIPPED or HIPPED) silicon nitride ceramic balls represent one of the highest levels of silicon nitride material preparation.

 

Silicon Nitride Punching Ball

 

Silicon Nitride Notched Ball

Silicon nitride ceramic notched ball/hemisphere, mainly used as valve sealing ball.

 

 

 

 

 

 

 

 

 

 

 

Pressure sintering silicon nitride ball

Superfine silicon nitride balls

φ0.3mm silicon nitride balls

Accuracy: G200; currently in stock. Used in microelectronics, watch movements, instrumentation, medical and other industries/fields

Typical properties of silicon nitride ceramics

-High hardness, good wear resistance, and long service life

φ1.0mm silicon nitride bearing balls

-High temperature resistance, maintaining high strength and hardness even at a high temperature of 1200°C

-Excellent wear resistance

-Low thermal expansion, high thermal shock resistance, and high thermal conductivity

-Good thermal shock resistance

-Anticorrlsion of acid and alkali

-Self-lubricationg, never rusting

-Nonmagnetic and electrical insulation

Application of the Silicon Nitride bearing balls

Silicon nitride ceramic balls can be used in various bearings with extreme performance requirements: high-speed/ultra-high-speed bearings, high-precision bearings, vacuum bearings, high/low-temperature bearings, non-magnetic bearings, high-precision ball screws; they can also be used in chemical pumps It is used as valve ball, swimming valve, fixed valve and measuring ball in high temperature pumps and metering pumps.
Silicon nitride ceramic balls are generally assembled into hybrid bearings and can be used in high-tech industries such as aviation, defense and other industries. They can also be widely used in chemical industry, metallurgy, medical, food, oil fields, electronics and other industries.

Packing

Silicon nitride bearing balls use appropriate outer boxes and internal buffer materials, and some components are also vacuum-packed.