Granite surface plates serve as the horizontal reference plane for precision inspection. Our plates are hand-scraped to achieve Grade 00 accuracy, providing a reliable foundation for precision measuring equipment in manufacturing.
What is the primary function of a surface plate?
A surface plate acts as the solid baseline for all precision inspection, layout, and tooling setup. Without a perfectly flat granite surface plate, measurements taken by height gauges or dial indicators would be fundamentally flawed and unreliable.
A surface plate acts as the solid baseline for all precision inspection, layout, and tooling setup. Without a perfectly flat granite surface plate, measurements taken by height gauges or dial indicators would be fundamentally flawed and unreliable.
What accuracy grades are available for these plates?
We manufacture surface plates adhering to strict international standards, offering Grade 00, Grade 0, and Grade 1. Grade 00 is the highest precision, typically used in laboratories, while Grade 1 is suitable for general workshop precision measuring tools.
We manufacture surface plates adhering to strict international standards, offering Grade 00, Grade 0, and Grade 1. Grade 00 is the highest precision, typically used in laboratories, while Grade 1 is suitable for general workshop precision measuring tools.
Why is hand-scraping important for surface plates?
Hand-scraping creates a specific surface texture that retains oil and reduces friction. This process ensures the granite mechanical components maintain their flatness over time and allows for smoother movement of sliding instruments during measurement tasks.
Hand-scraping creates a specific surface texture that retains oil and reduces friction. This process ensures the granite mechanical components maintain their flatness over time and allows for smoother movement of sliding instruments during measurement tasks.
Specification Comparison
| Grade | Application Scenario | Flatness Tolerance (Example) |
|---|---|---|
| Grade 00 | Precision Labs / Inspection | ±(3 + L/500) μm |
| Grade 0 | High-Precision Workshop | ±(5 + L/250) μm |
| Grade 1 | General Workshop Layout | ±(10 + L/125) μm |
Frequently Asked Questions (FAQ)
Q1: What accuracy grades do you offer for surface plates?
A: We provide Grade 00, Grade 0, and Grade 1, catering to both laboratory and workshop needs.
A: We provide Grade 00, Grade 0, and Grade 1, catering to both laboratory and workshop needs.
Q2: Why should I choose granite over cast iron for a surface plate?
A: Granite is non-magnetic, rust-proof, and does not burr when scratched, unlike cast iron.
A: Granite is non-magnetic, rust-proof, and does not burr when scratched, unlike cast iron.
Q3: How often should a granite surface plate be calibrated?
A: We recommend recalibration every 12 months depending on usage frequency to maintain accuracy.
A: We recommend recalibration every 12 months depending on usage frequency to maintain accuracy.
Q4: Can you manufacture custom-sized surface plates?
A: Yes, we can customize granite surface plates to specific dimensions and drilling requirements.
A: Yes, we can customize granite surface plates to specific dimensions and drilling requirements.
Q5: What is the maximum size you can manufacture?
A: We can produce large-scale plates up to 3000mm x 6000mm for heavy industrial applications.
A: We can produce large-scale plates up to 3000mm x 6000mm for heavy industrial applications.
Q6: How should I clean and maintain the surface plate?
Post time: May-28-2026