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Bearing.Ceramic Bearing Ceramic Bearing
A ceramic bearing is suitable for any environment in which wear, corrosion, thermal resistance, and electric insulation are required, so metal bearings are not suitable.
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Corrosion Resistance
Applicable in strong acid, alkali, and sea water
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Wear resistance
High hardness and wear resistance
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High-Temperature Environment
Stable working at 250 °C or higher
본문
Ceramic Bearing Components
- Inner/Outer ring
-
ZrO2 (Zirconia), Si3N4 (Silicon Nitride), SiC (Silicon Carbide)
- Retainer (CAGE)
- PTFE, PEEK, UPE, PVDF, PA66, PP, SUS304, SUS316, etc. Plastic
- Ball
- Zr02 (Zirconia), Si3N4 (Silicon Nitride), SiC (Silicon Carbide)
| assortment | Alumina (AI203) | Zirconia (ZrO2) | Silicon Nitride (Si3N4) | Silicon Carbide (SiC) |
|---|---|---|---|---|
| purity % Purity |
99.9 | 99.9 | 98 ~ 99 | 99.99 |
| Density [glee] Bulk Density |
3.9이상 | 5.5 ~ 6.0 | 3.25 | 3.02 |
| HIVickers Hardness[Gpa] Load 0.5kg HVl=9.807N |
17.2~17.5 | 12.5 ~ 13 | 14 | 6 |
| Bending Strength [Mpa] B |
345 ~ 370 | 890 ~ 930 | 880 | 250 |
| Compressive Strength [Mpa] |
2,350 ~ 2,400 | 5,100 ~ 5,400 | 3,820 | 2,700 |
| Youngs Modulus [Gpa] |
370 | 200 ~ 210 | 300 | 270 |
| Poissons Ratio |
0.23 | 0.3 | 0.28 | 0.24 |
| Thermal Condurtivity RT[W／mk] |
30 | 2.9 ~ 3.1 | 30 | 175 |
| Thermal Expansion [x10/℃] |
7.8 | 9 ~ 11 | 2.6 ~ 2.8 | 4.3 |
| Heat Shock Strength [l'>T(℃)] |
350 | 350 | 750 | 400 |
| Max Usable Temperature [℃] |
1,400 ~ 1,800 | 1,400 | 1,200 | 1,300 |
| ax Usable Temperature [25 ℃ 1MHZ] |
10 | 30 ~ 33 | 9.6 | 2.7 |