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Granite measurement platform is a precision reference measurement tool made of natural stone materials. It is mainly used in precision machinery, hardware, semiconductor, aerospace, automobile, instrument manufacturing and other industries. The main functions include:
1. As a benchmark for inspecting workpiece errors:
The granite platform can be used to inspect workpiece errors, such as flatness, straightness and contour measurement, to ensure that the size and shape of the workpiece meet the design requirements.
2. Installation and debugging of equipment and workpieces:
During the installation and debugging of mechanical equipment, the granite platform provides a stable datum to ensure accurate installation of the equipment.
3. Planar and three-dimensional scribing:
In the plane and three-dimensional scribing of various parts, the granite platform provides a stable benchmark to ensure the accuracy of the scribing.
4. High-precision measurement:
Due to its high accuracy and stability, the granite platform is particularly suitable for high-precision measurement work, such as the inspection of instruments, precision tools and mechanical parts.
The common sizes of granite measuring platforms are as follows：
| Items | Common size（mm） | Approximate weight | Flatness（μm） | |||
| Length-width-thickness | KG | Level 000 | Level 00 | Level 0 | Level 1 | |
| 1 | 300*300*80 | 21 | 1.5 | 3 | 6 | 11.5 |
| 2 | 400*400*80 | 38 | 2 | 3.5 | 6.5 | 13 |
| 3 | 400*500*100 | 60 | 2 | 3.5 | 7 | 13.5 |
| 4 | 500*600*100 | 90 | 2 | 4 | 7.5 | 14.5 |
| 5 | 630*1000*150 | 283 | 2.5 | 4.5 | 9 | 17.5 |
| 6 | 800*1000*150 | 360 | 2.5 | 5 | 9.5 | 18.5 |
| 7 | 800*1200*150 | 432 | 2.5 | 5 | 10 | 20 |
| 8 | 1000*500*150 | 225 | 2.5 | 4.5 | 8.5 | 17 |
| 9 | 1000*1000*150 | 450 | 2.5 | 5 | 10 | 19.5 |
| 10 | 1000*1200*150 | 540 | 3 | 5.5 | 10.5 | 20.5 |
| 11 | 1000*1200*200 | 720 | 3 | 5.5 | 10.5 | 20.5 |
| 12 | 1000*1500*200 | 900 | 3 | 6 | 11.5 | 22.5 |
| 13 | 1000*2000*200 | 1200 | 3.5 | 6.5 | 13 | 26 |
| 14 | 1200*1500*200 | 1440 | 3.5 | 7 | 13.5 | 27 |
| 15 | 1500*2000*250 | 2250 | 3.5 | 7 | 14 | 28 |
| 16 | 2000*2000*250 | 3000 | 4 | 8 | 15.5 | 31 |
| 17 | 2500*1600*300 | 3600 | 4 | 8 | 16 | 32 |
| 18 | 3000*2000*400 | 7200 | 5 | 9.5 | 18.5 | 37 |
Granite platform flatness calculation formula: (according to JJG117-2013 standard)
Level 000:1 x (1+d/1000)μm
Level 00:2 x (1+d/1000)μm
Level 0:4 x (1+d/1000)μm
Level 1:8 x (1+d/1000)μm
Level 2:16 x (1+d/1000)μm
Level 3:40 x (1+d/1000)μm
(d is diagonal mm)(measuring temperature at 20±2℃)
Physical properties
Size: On demand
Material: Natural granite
Reference specific gravity: 2800-3070kg/m3
Compressive strength: 230-254kg/mm2
Elastic wear: 1.27-1.47N/mm2
Linear expansion coefficient: 4.6× 10-6 /℃
Water absorption： 0.13%
Shore hardness HS70 or above
The accuracy is 000, 00, 0, 1 level.
Granite measurement platform is a precision reference measurement tool made of natural stone materials. It is mainly used in precision machinery, hardware, semiconductor, aerospace, automobile, instrument manufacturing and other industries. The main functions include:
1. As a benchmark for inspecting workpiece errors:
The granite platform can be used to inspect workpiece errors, such as flatness, straightness and contour measurement, to ensure that the size and shape of the workpiece meet the design requirements.
2. Installation and debugging of equipment and workpieces:
During the installation and debugging of mechanical equipment, the granite platform provides a stable datum to ensure accurate installation of the equipment.
3. Planar and three-dimensional scribing:
In the plane and three-dimensional scribing of various parts, the granite platform provides a stable benchmark to ensure the accuracy of the scribing.
4. High-precision measurement:
Due to its high accuracy and stability, the granite platform is particularly suitable for high-precision measurement work, such as the inspection of instruments, precision tools and mechanical parts.
The common sizes of granite measuring platforms are as follows：
| Items | Common size（mm） | Approximate weight | Flatness（μm） | |||
| Length-width-thickness | KG | Level 000 | Level 00 | Level 0 | Level 1 | |
| 1 | 300*300*80 | 21 | 1.5 | 3 | 6 | 11.5 |
| 2 | 400*400*80 | 38 | 2 | 3.5 | 6.5 | 13 |
| 3 | 400*500*100 | 60 | 2 | 3.5 | 7 | 13.5 |
| 4 | 500*600*100 | 90 | 2 | 4 | 7.5 | 14.5 |
| 5 | 630*1000*150 | 283 | 2.5 | 4.5 | 9 | 17.5 |
| 6 | 800*1000*150 | 360 | 2.5 | 5 | 9.5 | 18.5 |
| 7 | 800*1200*150 | 432 | 2.5 | 5 | 10 | 20 |
| 8 | 1000*500*150 | 225 | 2.5 | 4.5 | 8.5 | 17 |
| 9 | 1000*1000*150 | 450 | 2.5 | 5 | 10 | 19.5 |
| 10 | 1000*1200*150 | 540 | 3 | 5.5 | 10.5 | 20.5 |
| 11 | 1000*1200*200 | 720 | 3 | 5.5 | 10.5 | 20.5 |
| 12 | 1000*1500*200 | 900 | 3 | 6 | 11.5 | 22.5 |
| 13 | 1000*2000*200 | 1200 | 3.5 | 6.5 | 13 | 26 |
| 14 | 1200*1500*200 | 1440 | 3.5 | 7 | 13.5 | 27 |
| 15 | 1500*2000*250 | 2250 | 3.5 | 7 | 14 | 28 |
| 16 | 2000*2000*250 | 3000 | 4 | 8 | 15.5 | 31 |
| 17 | 2500*1600*300 | 3600 | 4 | 8 | 16 | 32 |
| 18 | 3000*2000*400 | 7200 | 5 | 9.5 | 18.5 | 37 |
Granite platform flatness calculation formula: (according to JJG117-2013 standard)
Level 000:1 x (1+d/1000)μm
Level 00:2 x (1+d/1000)μm
Level 0:4 x (1+d/1000)μm
Level 1:8 x (1+d/1000)μm
Level 2:16 x (1+d/1000)μm
Level 3:40 x (1+d/1000)μm
(d is diagonal mm)(measuring temperature at 20±2℃)
Physical properties
Size: On demand
Material: Natural granite
Reference specific gravity: 2800-3070kg/m3
Compressive strength: 230-254kg/mm2
Elastic wear: 1.27-1.47N/mm2
Linear expansion coefficient: 4.6× 10-6 /℃
Water absorption： 0.13%
Shore hardness HS70 or above
The accuracy is 000, 00, 0, 1 level.
