- Home
- Products
- CMM Machine
- Coordinate Measuring Machine
- Precision Granite Base: High-Stability, Low-Expansion CMM Core
Precision Granite Base: High-Stability, Low-Expansion CMM Core
The precision granite base serves as the critical structural foundation for high-end Coordinate Measuring Machines (CMM). Selected from fine-crystal natural stone, it offers an extremely low coefficient of thermal expansion (0.5–1.0 × 10⁻⁶/℃), ensuring minimal deformation under temperature fluctuations. Its high density and hardness provide exceptional load-bearing capacity without creep, while its unique crystalline structure delivers superior vibration damping to absorb environmental interference. Manufactured through a rigorous multi-stage CNC grinding process in temperature-controlled workshops, the base achieves nanometer-level surface flatness (≤0.002mm/1000mm), guaranteeing the long-term accuracy and stability required for micron and nanometer-level precision measurements.
Precision Granite Base: High-Stability, Low-Expansion CMM Core
The precision granite base of a coordinate measuring machine (CMM) is the core structural component of a high-end CMM system. Serving as the physical reference for the entire equipment, its performance directly determines the accuracy and long-term stability of measurement outcomes. Compared with traditional metallic materials, granite—with its unique physical properties—is the ideal choice for building measurement spaces requiring micron-level or even nanometer-level precision.
Product Features: Unparalleled Stability of Physical Properties
The core advantage of the granite base lies in its extremely low coefficient of thermal expansion (typically 0.5–1.0 × 10⁻⁶/℃), which is significantly lower than that of steel (approximately 12 × 10⁻⁶/℃). This ensures minimal deformation under temperature fluctuations, effectively preventing measurement datum drift caused by thermal expansion and contraction. Additionally, its high density (approximately 2.6–3.0 g/cm³) and high hardness endow the base with exceptional load-bearing capacity, enabling it to withstand prolonged pressure from heavy-duty equipment without creep deformation. Furthermore, the dense crystalline structure of granite provides excellent vibration damping performance, effectively absorbing high-frequency vibrations. This ensures stable probe readings during workpiece contact, unaffected by environmental interference.
Product Technology: From Natural Stone to Precision Foundation
The manufacturing of a precision granite base is a complex multi-stage process. It begins with strict selection of natural granite raw materials (such as Jinan Black and Zhangqiu Black) that feature fine crystals and uniform texture. Key processing steps include CNC cutting, planing, grinding, drilling, and embedding. Among these, precision grinding is the most critical procedure, typically performed in a temperature-controlled workshop using large-scale precision equipment for multi-stage grinding. This ensures the surface achieves nanometer-level flatness (with a typical requirement of ≤0.002mm/1000mm). Some high-end products also undergo structural optimization via finite element analysis, guaranteeing the base not only meets high-precision standards but also possesses optimal mechanical performance.
Promoting Precision Granite CMM Bases: Promoting Precision Granite CMM Bases:
This ensures the surface achieves nanometer-level flatness (typically required to be ≤0.002 mm/1000 mm). Some high-end products also undergo structural optimization through finite element analysis, guaranteeing that the base not only meets high-precision standards but also possesses optimal mechanical performance
RELATED PRODUCTS
products
Latest News
Our Services
Our Services
Payment & After-Sales
Flexible Payment Options: Multi-currency settlements (USD, EUR, etc.) supported, with secure payment channels such as T/T and L/C.
Contractual & Legal Safeguards: Bilingual contracts compliant with international practices clearly define responsibilities, quality standards, delivery timelines, and warranty terms. Notarization services available upon request.
Quality Assurance & After-Sales: Full-process quality control from raw material to delivery, accompanied by inspection reports. Warranty includes free replacement/return for non-manufacturing defects. Remote technical support and on-site services (terms negotiable) are provided.
Long-Term Partnership Benefits: Priority production scheduling, preferential pricing, and dedicated R&D resources available for recurring clients.
High-End Customization Services
Tailored High-Precision Granite Components: We specialize in custom-made granite parts for high end equipment manufacturers, backed by full inspection reports. Customization covers function, specifications, finish, and packaging, with flexible scaling from trial to mass production.
Localized Compliance Solutions: We adapt products to meet regional technical standards, environmental regulations, and certifications (e.g., CE, FDA), providing end-to-end support for market entry.
Joint R&D Collaboration: Our technical team collaborates directly with clients on specialized applications—from design and prototyping to testing—helping build competitive differentiation.
Language & Export Services
Professional English Support: Our team of native English speakers and business English specialists manages the entire process from consultation to after-sales. Proficient in Incoterms and industry-specific terminology, we ensure precise communication of technical and commercial details. Certified translation services are available for critical documents.
24/7 Cross-Time Zone Response: Operating on a shift system aligned with global time zones, we respond to inquiries within 12 hours on weekdays and address urgent issues within 4 hours.
Dedicated Account Manager: Each international client is assigned a single point of contact for end-to-end support, including customization, order tracking, and issue resolution.
Contact Us
Write Your Message
