Add to Cart
Laboratory Use Granite Surface Plate AA Grade Granite Inspection Plate
The hardness and stability allow accuracies within millionths of an
inch. Along with the high accuracies, granite is rust-proof,
non-magnetic, abrasive resistant, non wedging, wrap-resistant and
easily cleaned. The granite used for surface plates has an
excellent distribution of hard quartz which provides a smooth,
long-wearing working surface.
Granite surface plates meet or exceed Federal Specifications
DIN/876. Final inspection and calibration of every surface plate is
accomplished by use of the Auto-Collimeter
Repeatability:
Our granite surface plate refers to the advanced standards of the leading countries, and its flatness tolerance is in accordance with the JB/T 7975-1999 Surface Plate:
Grade 000 =1x(1+d/1000)/μm
Grade 00 =2x(1+d/1000)/μm
Grade 0 =4x(1+d/1000)/μm
Grade 1 =8x(1+d/1000)/μm
(d is the length of the diagonal)
Specification | Weight (kgs) | Precision Grade (μm) | |||
000 | 00 | 0 | 1 | ||
300 × 200 × 50 | 17 | 1.5 | 3 | 6 | 12 |
300 × 300 × 50 | 19 | 1.5 | 3 | 6 | 12 |
400 × 300 × 70 | 25 | 1.5 | 3 | 6 | 12 |
400 × 400 × 70 | 48 | 2 | 3.5 | 6.5 | 13 |
630 × 400 × 100 | 76 | 2 | 3.5 | 7 | 14 |
630 × 630 × 100 | 155 | 2 | 4 | 8 | 16 |
800 × 500 × 130 | 156 | 2 | 4 | 8 | 16 |
1000 × 630 × 130 | 284 | 2.5 | 4.5 | 9 | 18 |
1000 × 750 × 150 | 338 | 2.5 | 5 | 9 | 18 |
1000 × 1000 × 150 | 450 | 2.5 | 5 | 10 | 20 |
1600 × 1000 × 200 | 963 | 3 | 6 | 12 | 24 |
2000 × 1000 × 200 | 1200 | 3.5 | 6.5 | 13 | 26 |
1600 × 1600 × 300 | 2312 | 3.5 | 6.5 | 13 | 26 |
2000 × 1600 × 300 | 2890 | 3.5 | 7 | 14 | 28 |
2500 × 1600 × 300 | 3612 | 4 | 8 | 16 | 32 |
3000 × 2000 × 500 | 9030 | 4.5 | 9 | 18 | 36 |
4000 × 2000 × 500 | 12040 | 5.5 | 11 | 22 | 44 |
6000 × 2000 × 700 | 25284 | 7.5 | 15 | 30 | 60 |