Granite base for precision coordinate measuring machines providing ultra-stable reference surface
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Hardness | Mohs 6-7 | |
| Standard Sizes | 500×500 mm to 2000×3000 mm | |
| Weight Capacity | Up to 5000 kg | |
| Damping Capacity | High (natural vibration damping) | |
| Surface Roughness | Ra ≤ 0.2 μm | |
| Flatness Tolerance | ≤0.001 mm/m | |
| Thermal Expansion Coefficient | 5-8 × 10⁻⁶/°C |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
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Granite offers superior dimensional stability, better vibration damping, and lower thermal expansion compared to steel, making it ideal for precision measurement applications where environmental factors can affect accuracy.
Granite bases typically require annual calibration under normal operating conditions, but frequency may increase with heavy usage or in environments with significant temperature fluctuations.
Minor surface damage can often be repaired through re-lapping, but significant structural damage usually requires replacement as granite's crystalline structure cannot be welded or fused effectively.
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