Silicon Nitride Bearings Description
Silicon nitride bearings are used in the manufacture of bearing components where wear resistance, corrosion endurance and high mechanical strength at elevated temperatures are required. We supply both fully ceramic and hybrid bearing products manufactured from silicon nitride, zirconium dioxide and SiC.

Silicon Nitride Bearings Specification
Comparison of Ceramic and Steel Bearings
|
Si3N4 |
ZrO2 |
Steel |
Operating Temperature |
800 ℃ |
800 ℃ |
180 ℃ |
Density |
3,24 g/cm³ |
6 g/cm³ |
7,8 g/cm³ |
Coefficient of Thermal Expansion |
3.4×10⁻⁶ K⁻¹ |
10.5×10⁻⁶ K⁻¹ |
12.5×10⁻⁶ K⁻¹ |
Hardness, HV |
1500 |
1300 |
Approximately 750 |
Young’s Modulus |
320 GPa |
210 GPa |
208 GPa |
Corrosion Resistance |
Adequate |
Adequate |
Poor |
Thermal Conductivity |
Low |
Low |
High |
Magnetism |
None |
None |
Present |
Abrasion Resistance |
Excellent |
Excellent |
Adequate |
Applications for Silicon Nitride Bearings
Silicon nitride bearings are deployed in the automotive industry, in high-speed rocket engine assemblies, in equipment operating under corrosive environmental conditions and in certain high-performance vehicles.
Silicon Nitride Bearing Packaging
Our silicon nitride bearing is subjected to standard handling procedures during storage and transport in order to maintain its quality in the original condition.