In the world of ultra-precision manufacturing, measurement accuracy is not just a technical requirement—it defines the quality and credibility of the entire process. Every micron counts, and the foundation of reliable measurement begins with the right material. Among all engineering materials used for precision bases and components, granite has proven to be one of the most stable and reliable. Its outstanding physical and thermal properties make it the preferred benchmark material for mechanical component measurement and calibration systems.
The performance of granite as a measurement benchmark comes from its natural uniformity and dimensional stability. Unlike metal, granite does not warp, rust, or deform under normal environmental conditions. Its extremely low coefficient of thermal expansion minimizes dimensional variation caused by temperature changes, which is critical when measuring components at sub-micron accuracy levels. The high density and vibration-damping characteristics of granite further enhance its ability to isolate external interference, ensuring that every measurement reflects the true condition of the part being tested.
At ZHHIMG, our precision granite mechanical components are made from ZHHIMG® black granite, a premium-grade material with a density of around 3100 kg/m³, significantly higher than most European and American black granites. This high-density structure provides exceptional stiffness, wear resistance, and long-term stability. Each granite block is carefully selected, aged, and processed in temperature-controlled facilities to eliminate internal stresses before being machined. The result is a measurement benchmark that maintains its geometry and precision even after years of heavy industrial use.
The manufacturing process of granite mechanical components is a combination of advanced technology and craftsmanship. Large granite blanks are first rough-machined using CNC equipment and precision grinders capable of handling parts up to 20 meters in length and 100 tons in weight. The surfaces are then finished by experienced technicians using manual lapping techniques, achieving surface flatness and parallelism in the micron and even sub-micron range. This meticulous process transforms a natural stone into a precision reference surface that meets or exceeds international metrology standards such as DIN 876, ASME B89, and GB/T.
The measurement benchmark performance of granite mechanical components depends on more than just material and machining—it is also about environmental control and calibration. ZHHIMG operates constant temperature and humidity workshops with vibration isolation systems, ensuring that both production and final inspection take place under strictly controlled conditions. Our metrology equipment, including Renishaw laser interferometers, WYLER electronic levels, and Mitutoyo digital systems, guarantees that every granite component leaving the factory meets certified precision standards traceable to national metrology institutes.
Granite mechanical components are widely used as the foundation for coordinate measuring machines (CMMs), optical inspection systems, semiconductor equipment, linear motor platforms, and precision machine tools. Their purpose is to provide a stable reference for the measurement and alignment of high-precision mechanical assemblies. In these applications, granite’s natural thermal stability and vibration resistance allow instruments to deliver repeatable and reliable results, even in demanding production environments.
Maintenance of granite measurement benchmarks is simple but essential. The surfaces should be kept clean and free from dust or oil. It is important to avoid rapid temperature changes and to perform regular recalibration to maintain long-term accuracy. When properly maintained, granite components can remain stable for decades, providing an unmatched return on investment compared with other materials.
At ZHHIMG, precision is more than a promise—it is our foundation. With a deep understanding of metrology, advanced manufacturing facilities, and strict adherence to ISO 9001, ISO 14001, and CE standards, we continue to push the boundaries of measurement technology. Our granite mechanical components serve as the trusted benchmarks for global leaders in semiconductor, optics, and aerospace industries. Through continuous innovation and uncompromising quality, ZHHIMG ensures that every measurement begins with the most stable foundation possible.
Post time: Oct-28-2025