Granite Surface Plate 2000 x 2000 mm with 70+ HS Hardness and 0.32-0.63μm Surface Roughness
High-precision granite measuring table surface plate featuring exceptional durability, measurement accuracy, and static-free operation. Available in various shapes including rectangles, squares, and circles with customizable machining options.
- Working surface dimensions: 2000 x 2000 mm
- High precision measurement with no static electricity
- Exceptional durability and long service life
- Working surface hardness: greater than 70 HS
- Surface roughness: 0.32-0.63μm (working surface), 10μm (side)
- Made from fine-grained, densely structured granite with biotite content less than 5%
- Elastic modulus greater than 0.6x10-4 kg/cm²
- Water absorption less than 0.25%
- Working surface free from defects: sand holes, pores, cracks, slag inclusions, shrinkage, scratches, bumps, and rust
- Non-working surfaces allow for minor repairs in depressions or corners
- Vertical tolerance of side to working surface meets GB/T1184 12th level specifications
| Grade | Work Surface Accuracy (20°C) | Plane Fluctuation |
|---|---|---|
| 000 | 1×(1+d/1000)μm | 2μm |
| 00 | 2×(1+d/1000)μm | 4μm |
| 0 | 4×(1+d/1000)μm | 8μm |
| 1 | 8×(1+d/1000)μm | 16μm |
Primarily used as a reference positioning surface in testing and inspection. The working surface serves as a planar reference for inspection, scribing, assembly, welding, and riveting operations. Used to compare with actual workpiece surfaces to determine error values.
Available with various machining features including V-shaped, T-shaped, U-shaped grooves, dovetail grooves, round holes, and long holes. Custom components and bases can be manufactured according to specific user requirements.
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