Shenzhen Bozhida Robot Co., Ltd. has introduced its high-precision granite parallels, designed to provide reliable reference surfaces for inspection, measurement, and precision assembly applications. Widely used in metrology laboratories, semiconductor manufacturing, and precision machining environments, these granite parallels deliver exceptional dimensional stability and accuracy.

Manufactured from premium natural granite, the granite parallels feature a material density of approximately 2.7–3.0 g/cm³, ensuring a rigid and stable structure. The material’s inherent hardness and wear resistance allow the parallels to maintain their accuracy over extended periods without deformation, even under frequent use.

One of the key performance advantages of granite parallels lies in their excellent thermal stability. With a low coefficient of thermal expansion controlled within (5–8)×10⁻⁶/°C, the parallels minimize dimensional variation caused by temperature changes, ensuring consistent measurement results in controlled and industrial environments alike.

The working surfaces of the granite parallels are processed using precision grinding and lapping techniques to achieve extremely high flatness and parallelism. Flatness is typically controlled within 1–2 μm, while parallelism between the two measuring surfaces is maintained within ±2 μm. Surface roughness is refined to Ra ≤0.8 μm, providing smooth, non-reflective contact surfaces ideal for precision measurement tasks.

In addition, the granite parallels exhibit excellent vibration damping properties. Compared to metal counterparts, granite can absorb environmental vibration more effectively, reducing measurement errors caused by external disturbances. This ensures improved repeatability and reliability in high-precision inspection processes.

The product is available in a variety of standard and customized sizes, with lengths ranging from 100 mm to 1000 mm, and cross-sectional dimensions tailored to specific application requirements. Each set is carefully matched and calibrated to ensure consistent performance, making them suitable for use as reference standards in calibration procedures.

Granite parallels also offer advantages in corrosion resistance and non-magnetic properties. Unlike metal tools, they are not affected by oxidation or magnetic interference, making them particularly suitable for sensitive measurement environments and electronic component inspection.

To ensure quality and traceability, Shenzhen Bozhida Robot Co., Ltd. manufactures its granite parallels under strict quality control processes, with inspection reports provided for flatness, parallelism, and dimensional accuracy. Optional certification and calibration services are available to meet international metrology standards.

With the increasing demand for higher precision and reliability in manufacturing and inspection processes, granite parallels are becoming indispensable tools in modern industrial environments. Shenzhen Bozhida Robot Co., Ltd. continues to deliver high-performance granite solutions that support accurate measurement and efficient production workflows.