Audited Supplier
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
