Marble Parallel Rail (Marble/Granite Material Optional)

Core Selling Points

• Ultra-High Parallel Precision: Precision grades include 000/00/0/1, parallelism error ≤0.002mm/m (Grade 000), straightness error ≤0.0015mm/m, compliant with GB/T 6092-2009 and JB/T 10027-2016 standards, providing stable benchmarks for precision guidance and detection
• High-Quality Natural Base Material: Made of high-density natural marble/granite, with hundreds of millions of years of natural aging treatment, complete release of internal stress, non-magnetic, non-conductive, Shore hardness ≥HS75, wear-resistant and corrosion-resistant, and the surface is not easy to scratch or deform
• Extreme Structural Stability: Low coefficient of thermal expansion (≤5.0×10^-6/℃), excellent thermal stability, can maintain high precision at room temperature and in environments with small temperature fluctuations, no creep or loosening after long-term use
• Precision Integrated Process: Adopting integral forming processing, the guide rail surface undergoes multiple refined processes such as rough grinding, precision grinding and polishing, surface finish up to Ra0.012μm, smooth guidance without stagnation, high fit, and strong load-bearing capacity (single rail load ≤500kg)
• Convenient Maintenance & Durability: Dense structure, excellent impact resistance, no oiling required for rust prevention, daily cleaning with a lint-free cloth is sufficient, suitable for long-term stable use in laboratories, precision workshops, metrological detection and other scenarios

Standard Size Specifications

Precision Grade Description

• Grade 000: Parallelism error ≤0.002mm/m, straightness error ≤0.0015mm/m, suitable for national metrology laboratories, ultra-high precision equipment guidance benchmarks, and reference part calibration scenarios
• Grade 00: Parallelism error ≤0.003mm/m, straightness error ≤0.0025mm/m, suitable for aerospace precision manufacturing, high-end CNC machine tool guidance and detection
• Grade 0: Parallelism error ≤0.005mm/m, straightness error ≤0.004mm/m, suitable for precision mechanical processing equipment guidance and large workpiece flatness detection benchmarks
• Grade 1: Parallelism error ≤0.01mm/m, straightness error ≤0.008mm/m, suitable for conventional mechanical manufacturing, automated production line guidance, and construction engineering detection benchmarks

Application Fields

• Precision Machinery Manufacturing: CNC machine tool guidance systems, precision grinder guide benchmarks, automated equipment linear guidance mechanisms
• Aerospace Industry: Precision processing guidance of aircraft parts, detection benchmarks of aero-engine components, assembly and positioning of aerospace equipment
• Electronic Semiconductor Manufacturing: Linear guidance of semiconductor equipment, precision detection platform benchmarks of electronic components, processing and positioning guides of circuit boards
• High-End Automobile Manufacturing: Processing guidance of automobile engine blocks, detection benchmarks of precision transmission components, processing and positioning of new energy vehicle battery components
• Metrological Detection Field: Calibration benchmarks of laboratory metrological standards, parallelism detection platforms of large workpieces, linear precision calibration of detection instruments
• Other High-End Fields: Guidance of medical device manufacturing, benchmarks of precision mold processing, benchmark guides for installation and commissioning of large equipment

Customization Service

Custom sizes are available (single rail length: minimum 300mm, maximum 5000mm; width: minimum 60mm, maximum 300mm; height: minimum 50mm, maximum 200mm). The distance between two rails (minimum 100mm, maximum 1000mm) and inch specifications (such as 20″×3.2″×2.4″, 80″×7.2″×4.8″, etc.) can be customized. Precision grades, guide rail surface grinding processes, edge chamfers and drilling processing can be adjusted as required.

Usage Notes

• Store in a dry, flat and vibration-free environment, avoid moisture, exposure to sunlight, rain and severe collision. It is recommended to store in a special wooden bracket or shockproof packaging box to ensure that the two guide rails are placed in parallel to prevent deformation under pressure; regularly check the cleanliness of the guide rail surface during long-term storage.
• Ensure the installation surface is flat and clean during installation, use a level to calibrate the levelness of the guide rails, ensure the parallelism of the two guide rails meets the usage requirements, and apply uniform force when tightening the bolts to avoid local excessive force leading to guide rail deformation; recheck the parallelism and straightness after installation.
• Before use, gently wipe the guide rail surface with a lint-free cloth dipped in neutral detergent to remove dust, oil and other impurities to ensure smooth guidance; avoid scratching or impacting the guide rail surface with hard objects. If there are stubborn stains, do not scrape them with sharp tools, and use special cleaning products to handle them.
• Control the load within the rated range during operation, avoid overloading to cause guide rail deformation or precision damage; keep the moving parts in smooth contact with the guide rails to avoid severe friction and impact.
• Perform precision calibration regularly, it is recommended to calibrate every 6-12 months. Calibration shall be carried out by professional metrological institutions in accordance with relevant national standards; if unsmooth guidance, abnormal precision and other conditions are found during daily use, stop the machine in time for inspection and calibration.