Granite Machine Frame

UNPARALLELED LTD is one of the leading manufacturers and suppliers of granite machine frame in China. With abundant experience, we warmly welcome you to buy advanced granite machine frame made in China here from our factory. We also accept custom orders.

High-Precision Granite Base Engineered for Semiconductor, Metrology, and Automation Systems

When machine accuracy reaches the micron or even nanometer level, the foundation becomes just as important as the motion system itself. The UNPARALLELED® Precision Granite Base is designed to provide exceptional dimensional stability, vibration damping, and long-term accuracy for demanding industrial applications.

Manufactured from proprietary UNPARALLELED® Black Granite, this large U-shaped granite structure combines outstanding rigidity with excellent thermal stability. Unlike traditional cast iron or fabricated steel structures, granite does not rust, exhibits minimal thermal expansion, and naturally absorbs vibration, making it an ideal material for precision machine frames and metrology platforms.

Whether used in semiconductor equipment, laser systems, CMM machines, optical inspection equipment, or precision automation systems, our granite bases help engineers achieve higher repeatability, improved measurement accuracy, and greater system reliability.

For decades, machine builders have struggled with thermal distortion, corrosion, and vibration issues associated with conventional metal structures.

UNPARALLELED® Black Granite offers significant advantages:

Superior Vibration Damping

Natural granite absorbs vibration significantly better than cast iron and steel. This reduces measurement errors and improves machining stability.

Excellent Thermal Stability

Granite maintains dimensional consistency even when ambient temperatures fluctuate, helping preserve machine accuracy over long production cycles.

Corrosion-Free Performance

Unlike metal structures, granite will not rust or oxidize, reducing maintenance requirements and extending service life.

Long-Term Dimensional Stability

The geological aging process of natural granite creates a material with exceptional internal stability, making it ideal for ultra-precision applications.

Premium UNPARALLELED® Black Granite

Manufactured from high-density granite with a density of approximately 3100 kg/m³, offering superior physical properties compared with many conventional granites available worldwide.

Micron-Level Precision Machining

Every granite base is processed using advanced CNC equipment, precision grinding technology, and rigorous metrology inspection procedures.

Custom Threaded Inserts

Precision-installed stainless steel inserts allow easy integration of:

• Linear guides
• Linear motors
• Air bearings
• Optical systems
• Motion control platforms
• Precision measuring instruments

Exceptional Structural Rigidity

The reinforced U-frame design provides outstanding load-bearing capability while minimizing structural deformation.

Large-Scale Manufacturing Capability

UNPARALLELED® can manufacture granite structures up to:

• Length: 20,000 mm
• Width: 4,000 mm
• Thickness: 1,000 mm
• Single-piece weight: 100 tons

Semiconductor Equipment

Precision granite bases provide stable foundations for wafer inspection systems, lithography equipment, semiconductor handling systems, and precision positioning stages.

Coordinate Measuring Machines (CMM)

Granite structures are widely used in CMM equipment due to their excellent dimensional stability and vibration absorption characteristics.

Laser Processing Equipment

Suitable for femtosecond laser systems, picosecond laser machines, and precision optical alignment platforms.

Optical Inspection Systems

Used in AOI equipment, industrial CT systems, X-ray inspection machines, and optical metrology platforms.

Precision Automation

Ideal for XY stages, linear motor systems, robotic positioning platforms, and automated assembly equipment.

UNPARALLELED® operates two manufacturing facilities covering over 200,000 m², supported by a dedicated raw granite storage yard exceeding 20,000 m².

To ensure world-class accuracy, all products are inspected using advanced metrology equipment including:

• Mahr Precision Indicators (Germany)
• Mitutoyo Measuring Instruments (Japan)
• WYLER Electronic Levels (Switzerland)
• Renishaw Laser Interferometers (United Kingdom)
• Inductive Micrometers
• Surface Roughness Testers

All measuring equipment is calibrated with traceability to national metrology standards.

In addition, our precision grinding specialists possess decades of hands-on experience, enabling ultra-fine adjustments that contribute to micron-level manufacturing accuracy.

Can the granite base be customized?

Yes. We manufacture according to customer drawings, 3D models, and technical specifications.

What accuracy can be achieved?

Depending on application requirements, precision levels can range from standard industrial tolerances to ultra-precision metrology-grade specifications.

Can inserts and mounting holes be customized?

Absolutely. Threaded inserts, dowel holes, vacuum channels, air-bearing interfaces, and custom mounting features can all be integrated.

Is granite better than cast iron?

For many ultra-precision applications, granite offers superior vibration damping, corrosion resistance, and thermal stability compared with cast iron.

Which industries commonly use granite machine bases?

Semiconductor manufacturing, metrology, optics, laser technology, aerospace, automation, medical equipment, and scientific research.

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