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Sapphire Bearings & Ruby Bearings
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| We supply high quality sapphire bearings, ruby bearings. The diameter of bearings from 0.80mm to 10.00mm. The height of bearings from 0.20mm to 8.00mm. The shapes of bearings include Vee bearing, Cup bearing, Ring bearing, etc. Best prices and service. |
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Properties of synthetic sapphire and ruby |
| Chemistry component: Al2O3. |
| Hardness Mohs: 9.0. |
| Density: 3.98g/cm3. |
| Color: White and red. |
| Melting point: 2050¡ãC |
| Softening point: 1800¡ãC |
| Thermal expansion: |
Parallel to C-axis: 6.7¡Á10-6/¡ãC |
| Perpendicular to C-axis: 5.0¡Á10-6/¡ãC |
| Thermal conductivity: 0.09 cal/sec.cm.¡ãC (25¡ãC) |
| Knoop: |
1800 face parallel to C-axis |
| 2200 face perpendicular to C-axis |
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