UNPARALLELED LTD is one of the leading manufacturers and suppliers of machined granite plate in China. With abundant experience, we warmly welcome you to buy advanced machined granite plate made in China here from our factory. We also accept custom orders.
Product Description
Precision Meets Functionality: The UNPARALLELED® Custom Granite Surface Plate
In the world of ultra-precision engineering, a surface plate isn't just a table - it's the foundation of accuracy. That's why leaders in semiconductors, aerospace, medical devices, and metrology trust UNPARALLELED® - the global benchmark in precision granite components - to deliver the most stable, flat, and functionally intelligent surface plates available today.
Our Custom Granite Surface Plate with Central Hole is engineered for maximum performance in complex measurement environments. Crafted from our proprietary high-density black granite (≈3100 kg/m³), this plate combines exceptional thermal stability, minimal expansion coefficient, and unmatched resistance to deformation under load - making it ideal for CMMs, optical inspection systems, laser alignment tools, and cleanroom assembly platforms.
We don't sell generic parts. We engineer purpose-built solutions that integrate seamlessly into your system - because when you're building the future of technology, you need a base that doesn't compromise.
quality control
Technical Specifications
| Parameter | Specification |
|---|---|
| Material | UNPARALLELED® Black Granite (Density: ~3100 kg/m³) |
| Surface Finish | Mirror-polished, lapped to nanometer-level flatness |
| Flatness Accuracy | Up to ±0.5 μm/m (Grade 00 / DIN 876) |
| Thermal Expansion Coefficient | < 0.5 × 10⁻⁶ /°C |
| Hardness | Mohs 6–7 (resistant to scratches and abrasion) |
| Available Sizes | Customizable up to 6000mm × 4000mm × 1000mm |
| Mounting Options | Pre-drilled holes, optional leveling feet, vibration isolation pads |
| Central Hole | Oval-shaped, customizable diameter and depth |
| Certifications | ISO 9001, ISO 14001, ISO 45001, CE, traceable to national standards |
| Calibration | Traceable to NIST, PTB, NPL via Mahr, Mitutoyo, Renishaw instruments |
All products come with full calibration certificates and are tested in our climate-controlled, vibration-free environment.
Key Advantages
- Superior Material Quality:
Our exclusive black granite outperforms European and American alternatives in density, stability, and durability - not a substitute for marble.
- Nanometer-Level Flatness:
Achieved through multi-stage grinding and hand-lapping by master craftsmen with over 30 years of experience - some can feel changes down to 1 μm by touch alone.
- Zero Thermal Drift:
With an extremely low coefficient of thermal expansion, the plate maintains dimensional stability even in fluctuating environments.
- Custom Engineering Capability:
Whether you need a standard plate or a fully customized design with holes, recesses, or channels, we engineer solutions tailored to your application.
- Full Traceability & Certification:
Every component is calibrated using traceable instruments and comes with detailed certification reports. We also support third-party verification upon request.
- Industry-Leading Production Capacity:
As the world's fastest producer of precision granite beds, we manufacture 20,000 sets per month using 4 Taiwan NanTec grinding machines ($500K+ each), capable of processing up to 6000mm length.
services
Real-World Applications & Benefits
Used in:
✅ Semiconductor wafer inspection equipment
✅ PCB drilling & testing platforms
✅ Coordinate Measuring Machines (CMM)
✅ Laser alignment & AOI systems
✅ Industrial CT scanners & X-ray imaging
✅ High-precision CNC tooling tables
✅ Research labs at MIT, Stanford, Tsinghua, and more
Client Benefits:
- Eliminates measurement errors caused by unstable surfaces
- Reduces recalibration frequency and downtime
- Enhances repeatability in automated production lines
- Serves as a primary reference plane in metrology labs
- Ideal for cleanroom environments due to non-magnetic, non-conductive properties
FAQ
Q: Can I customize the size and hole pattern?
A: Absolutely. We offer full customization - from small benchtop plates to massive 6-meter-long platforms - with no minimum order quantity.
Q: How do I maintain my granite surface plate?
A: Clean with distilled water and soft cloth. Avoid abrasive cleaners. Store level and protected from impacts. Regular recalibration is advised every 6–12 months depending on usage.
Q: What makes UNPARALLELED® different from other brands?
A: We're the only manufacturer globally with ISO 9001, 14001, 45001, and CE certifications, plus 20+ international patents. Our in-house R&D team works with universities like NUS, KTH, and Tsinghua to push the limits of precision.
Q: Do you provide calibration certificates?
A: Yes. All plates are calibrated using traceable instruments and come with detailed certification reports. We also support third-party verification upon request.
Q: Is this suitable for outdoor use?
A: While highly durable, we recommend indoor use in controlled environments. Outdoor exposure may lead to moisture absorption and thermal stress over time.
certificates
Why Trust UNPARALLELED®?
Because we believe:
"If you can't measure it, you can't make it."
That's why we invest in state-of-the-art metrology labs, partner with global research institutions, and train every technician in DIN, ASME, JIS, GB, and ISO standards. We don't just sell products - we deliver confidence.
From GE and Samsung to Singapore's Akribis and Israel's Flex, leaders in technology choose us because they know:
When precision matters, only UNPARALLELED® delivers.
Hot Tags: machined granite plate, China machined granite plate manufacturers, suppliers, factory, Multi Sensor Coordinate Measuring Machine granite table, Precision Granite for Bridge Type Coordinate Measuring Machine, cmm machine calibration, granite machine base for gear machine, precision granite inspection table, cmm price list
