High Precision Silicon Nitride Ceramic Ball for Ball Bearing
Description:
The quality of ceramic powder has a great influence on the performance of ceramics. For this reason, Jinsheng Ceramics has been focusing on the development and application of ceramic powder technology, and has the ability of ceramic powder processing and characterization analysis.
So our products have stable performance and good consistency. We can provide various sizes of ceramic balls according to customers' requirements, including both GPS and HIP sintering technology products.
Technical Parameters:
| Mechanical behavior | Unit | Al2O3 | SiC | Si3N4 | ZrO2 |
| Colour | ------- | Light yellow | black | black | white,black |
| Density | g/cm3 | 3.95 | 3.15 | 3.2 | 6 |
| Bending strength | MPa | 300～400 | 400～500 | 800～1200 | 950～1200 |
| Elastic modulus E | GPa | 380 | 350 | 300-320 | 210 |
| Poisson's ratio | | 0.22 | 0.14 | 0.26 | -------- |
| Hardness | Hv | 1800 | 2000～2500 | 1400～1700 | 1100～1300 |
| HRC | 80 | 85～90 | 75～80 | 70～75 |
| Fracture toughness | MPa·m1/2 | 3.0～4.0 | 3.0～4.0 | 5.0～7.0 | 8.0～10.0 |
| Maximum use temperature | ℃ | 1000 | 1300 | 400 | 400 |
| Thermal expansion coefficient | 10-6/℃ | 8.4 | 4 | 3.3 | 10.3 |
| | G5 | G10 G16 | G20 G28 G40 |
| ClassⅠ | Liquid oxygen pump,Active shaft bearing | The key parts of aerospace equipment | |
| ClassⅡ | Vaccum equipment,high speed instrument,mechanical devices,high performance and the most advanced contacting spherical propeller | Motor,medium-low precision star bearing | Testing bearing ball,separating bearing ball |
| ClassⅢ | | Sport,entertrainment,food processing | Mechanical devices |
Advantages:
1. High Strength over a wide temperature range.
2. High Fracture toughness.
3. High Hardness.
4. Outstanding Wear Resistance ,both impingement and frictional modes.
5. Good Thermal Shock Resistance.
Application:
composite bearings, mechanical seals, chemical pumps, nozzles, automotive parts, heatSwitch parts, vacuum equipment, etc. and in a variety of harsh environments.
More pictures:
Product Tags:
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Ball Bearing 75 80HRC Silicon Nitride Balls 400℃ 3.2g/Cm3 Images
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