UNPARALLELED LTD is one of the leading manufacturers and suppliers of precision measurement tool in China. With abundant experience, we warmly welcome you to buy advanced precision measurement tool made in China here from our factory. We also accept custom orders.
Product Description
In the world of ultra-precision engineering, stability isn't just a feature-it's the foundation. At UNPARALLELED Group, we don't just cut stone; we engineer confidence. Our precision granite bases are the silent guardians of nanometer-level accuracy in semiconductor fabs, metrology labs, and advanced manufacturing lines worldwide.
Unlike inferior marble or composite alternatives, our proprietary UNPARALLELED® black granite (density: ≈3100 kg/m³) delivers unmatched dimensional stability, near-zero thermal expansion, and exceptional damping properties. Every base is machined in our 10,000m² ISO-certified cleanroom, using German Mahr metrology and Swiss Wyler leveling systems to ensure flatness down to ±0.5µm-because in precision, there's no room for compromise.
| Parameter | Specification |
|---|---|
| Material | UNPARALLELED® Black Granite (Natural Igneous Rock) |
| Density | ≈3100 kg/m³ |
| Max. Dimensions | 20,000mm (L) × 4,000mm (W) × 1,000mm (H) |
| Flatness Accuracy | Up to Grade 000 (±0.5µm) per DIN 876 |
| Surface Finish | Ra ≤ 0.8µm (mirror-polished optional) |
| Certifications | ISO 9001, ISO 14001, ISO 45001, CE |
| Customization | Full CAD/CAM support, threaded inserts, cooling channels |
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Why UNPARALLELED® Granite Outperforms Steel & Marble
- Zero Warping: Natural granite's crystalline structure resists thermal drift-critical for 24/7 semiconductor production.
- Vibration Suppression: 5x better damping than steel, eliminating micro-movements that ruin nanoscale measurements.
- Corrosion-Free: Unlike metal, granite won't rust or degrade in cleanroom or humid environments.
- Lifetime Stability: No stress relief needed-our bases maintain accuracy for decades.
Engineered for Real-World Precision
- Semiconductor Equipment: Serves as the rigid platform for wafer steppers and EUV lithography stages.
- CMM & Metrology: Acts as the reference plane for coordinate measuring machines (accuracy: ±1µm/m).
- Laser & Optical Systems: Provides a vibration-isolated base for femtosecond lasers and interferometers.
- EV Battery Inspection: Supports high-speed 3D scanning of battery cells without thermal distortion.
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FAQs
Q: Can you machine complex geometries (e.g., internal channels, threaded holes)?
Yes. Our 4-axis CNC centers and 30+ year veteran grinders achieve tolerances within ±5µm-even on 100-ton monoliths.
Q: How do you ensure flatness over large surfaces?
We use a closed-loop process: in-process laser interferometry (Renishaw) + post-machining calibration with Swiss Wyler electronic levels.
Q: Is granite better than mineral casting for machine bases?
For ultra-high precision (<1µm), natural granite's homogeneity and long-term stability outperform cast composites-especially under thermal cycling.
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