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Granite Inspection Surface Table

- Dec 22, 2017 -

Product Description

Product: Level Black Granite Surface Plate
-High quality assured
-Reasonable price
-Fast delivery
- Our standard sizes in our store for your convenience.
- We have capabilities to manufacturer almost any size requested.
- Just contact us with your specifications for a quotation.
- SURFACE PLATES are made of black granite which is stronger and denser than light colored granite, more stable, and wears longer.
- The granite properties determine the stiffness of the granite and accuracies can be guaranteed with less thickness than other types of granite.
- This translates to less freight and handling whenever the plate is shipped or moved.
So granite is applicable to the works of industrial production and laboratory measurement.
- For high precision operations in temperature controlled gauging rooms and metrology departments
- For general quality control use
- For shop work and production checking
The precision of the granite surface plates is in line with the standards of advanced countries.
Tolerance of planeness: Standard JB/T7975-1999
Grade 000 = 1 × ( 1+d/1000 ) μ M
Grade 00 = 2 × ( 1+d/1000 ) μ M
Grade 0 = 4 × ( 1+d/1000 ) μ M
Grade 1 = 8 × ( 1+d/1000 ) μ M
( "d" is the diagonal mm ) (The measuring temperature is normally 20± 2° C )
Physical Properties:
S. G: 2970-3070kgs/m3
Compressive strength: 245-254N/mm2
Elastic modulus: 1.27-1.47N/mm2
Lindar expansion coefficient: 4.61 × 10-6/° C
Water absorptivity: < 0.13%
Shore scleroscope hardness: More than Hs70
Specification:
Specification
Length × Width × Thickness (mm) Weight (kgs) Precision Grade (μ M)
000 00 0 1
300 X 200 X 50 17 1.5 3 6 12
300 X 300 X50 19 1.5 3 6 12
400 X 300 X70 25 1.5 3 6 12
400 X400 X 70 48 2 3.5 6.5 13
630 X 400 X100 76 2 3.5 7 14
630 X630 X 100 155 2 4 8 16
800 X 500 X130 156 2 4 8 16
1000 X 630 X 130 284 2.5 4.5 9 18
1000 X 750 X 150 338 2.5 5 9 18
1000X 1000 X150 450 2.5 5 10 20
1600 X 1000 X 200 963 3 6 12 24
2000 X1000 X 200 1200 3.5 6.5 13 26
1600 X1600 X 300 2312 3.5 6.5 13 26
2000 X 1600 X 300 2890 3.5 7 14 28
2500 X1600 X 300 3612 4 8 16 32
3000 X 2000 X 500 9030 4.5 9 18 36
4000 X2000 X 500 12040 5.5 11 22 44
6000 X 2000 X 700 25284 7.5 15 30 60

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