Basic Info.
Product Description
Inspection and measurement Granite plate
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)
1 High precision reliable stability resistant to deform and guaranteed accuracy under normal ambient temperature.
2 No-rust and anticorrosion.
3 Wear resistance long service life.
4 Any cutting or scraching for working surface does not bring about rough edges which might influence its measuring precision.
5 Non magnetization.
6 Glossy surface without sluggishness when the workpieces or tools are moving on it.
- specific gravity 2970-3070 kg/m2
- compressive strength 245-254 MPa
- elastic modulus 1.27-1.47 GPa
- linear expandsibility 4.61X10-6/oC
- water absorption<0.13%
- shore hardness>70 Hs
-
Customized sizes are available
Specification
Length × Width × Thickness (mm)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
