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Granite measuring devices

Our granite measuring devices and granite mechanical components are made of high quality “ JiNanQing” granite. Due to their high precision, long duration, good stability and corrosion resistance ,they have been more and more used in product inspection of modern industries and such high-tech areas as mechanical aerospace and scientific researches.
Physical Properties of “JiNanQing” Granite Rock
Specific Gravity：2970-3070Kg/m3
Compressive Strength：245-254N/mm2
Elastic Modulus：1.27-1.47N/mm2
Linear Expansion Coefficient：4.61×10-6/℃
Water Absorptive：＜0.13%
Shore Hardness：70Hs		 The granite measuring tools have the following characteristics:
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 working surface cutting or scratching does not bring about rough “edges”which might influence its measuring precision.
5.Nonmagnetization.
6.Gloosy surface without sluggishness when the workpieces or tools are  moving on it.
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 The granite surface accuracy please refer advanced leading
countries standard flatness tolerance
grade 000 1×（1+d/1000)μm
grade 00 2×（1+d/1000)μm
grade 0 4×（1+d/1000)μm
grade 1 8×（1+d/1000)μm
(d is the length of the plate's diagonal mm)
Granite measuring flat
 

TYPE
(mm)
Precision grade

grade 000 flatness
(μm)

grade 00 flatness
(μm)

grade 0 flatness
(μm)

grade 1 flatness
(μm)

300×200×50
300×300×70
400×250×70
400×400×70
630×400×100
630×630×100
800×500×130
1000×630×150
1000×750×150
1000×1000×150
1600×1000×200
2000×1000×200
2000×1600×250
2500×1600×300
3000×2000×400
4000×2000×500

1.5
1.5
1.5
2
2
2
2
2.5
2.5
2.5
3
3.5
3.5
4
4.5
5.5

3
3
3
3.5
3.5
4
4
4.5
4.5
5
6
6.5
7
8
9
11

5.5
5.5
6
6.5
7
8
8
9
9
10
12
13
14
16
18
22

11
11
12
13
14
16
16
18
18
20
24
26
28
32
36
44

1.Welcome your enquiry for other specifications. the largest size for production 3000mm width.6000mm length.
2.We also accept to make any relative to process such as drills, insert T slot and dovetail slot etc. On granite plate. (Estimate granite to sketch).
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TYPE (mm)

Squareness between measuring surface and datum surface

Flatness & straightness of measuring surface

Flatness & straightness of datum surface
Precision grade (μm)
00
0
00
0
00
0

100×63
160×100
250×160
400×250
630×400
1000×630

2
2
2.5
3.5
4.5
6

4
4
5
7
9
12

1
1
1
1
1.5
2.5

1
2
2
2.5
3
5

1
1
1
1
1
1.5

1
1
2
2
2.5
3

.For inspecting machine spindle and else squareness work-pieces
Right-angle rule
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TYPE
(mm)
Squareness between adjacent measuring surfaces
Straightness of measuring surface
Parallelism between opposite measuring surface
Precision grade (μm)
00
0
00
0
00
0
160×160
200×200
250×250
315×315
400×400
500×500
2
2
2.2
2.6
3
3.5
4
4
4.5
5.2
6
7
0.8
0.9
1
1.1
1.3
1.5
1.7
1.8
2
2.3
2.6
3
2
2
2.2
2.6
3
3.5
4
4
4.5
5.5
6
7

.On inspection of verticality and parallelism as well as absolute 90°measuring
Squareness rule
　
　
TYPE(mm)
 Flatness of working surface
　		 Parallelism between slot and bottom surface Parallelism between slot and side surface Symmetry between slot & end surface Squareness between slot & end surface Squareness between slot & bottom surface Height difference of the slot within a matched pair
Precision grade (μm)
0
1
0
1
0
1
0
1
0
1
0
1
0
1

40×90°
63×90°
100×90°
160×90°

1
2
2
2.5

2
3
4
5

3
4
4
5

6
8
8
10

3
4
4
5

6
8
8
10

5
8
8
10

10
16
16
20

5
8
8
10

5
8
8
10

3
4
4
5

6
8
8
10

4
5
5
6

6
10
10
12

.For inspecting the coaxial cylindrical city symmetry and shifting of revolution pars.
.Generally supply by pair if need single pc please adv. when order. Granite Straightedges.
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TYPE
(mm)
Linearity or Flatness of working surface
　
Parallelism between working surface
verticality between ∨side & working surface
Precision grade (μm)
00
0
00
0
00
0
400×60×25
630×100×35
1000×160×50
1600×250×80
2000×300×100

1.6
2.1
3.0
4.4
5.4

2.6
3.5
5.0
7.4
10.0
2.4
3.2
4.5
6.6
8.1
3.9
5.3
7.5
11.1
13.5
　
8.0
10.5
15
22
27
13
18
25
37
45

For inspecting the linearity and flatness. Welcome to inquire the special type.

Flat rule
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TYPE
(mm)
Parallelism between opposite&flatness of working surface
verticality between working surface
H.W difference of each pair of parallel rule
Precision grade(μm)
00
0
00
0
00
0
160×25×16
250×40×25
400×63×40
630×100×63
1.5
2
4
6
3
4
8
12
20
30
40
50
40
60
80
100
1.5
2
4
6
3
4
8
12

can replace same height block, for inspecting fittings parallelism; supply in pairs.

Parallel rule

 
  Granite Vee Blocks （mm）点击放大!

Flatness of working surface

Parallelism between V slot and bottom surface
　

Parallelism between V slot and bottom surface

　


Symmetry between V slot&end surface


　

Squareness between V slot &end  surface
　

Squareness between V slot & bottom surface

Height difference of the V slot within a matched pair

  Precision grade (µm)

0

1

0

1

0

1

0

1

0

1

0

1

0

1
40×90°
63×90°
100×90°
160×90°		 1
2
2
2.5		 2
3
4
5
　		 3
4
4
5		 6
8
8
10		 3
4
4
5
　		 6
8
8
10
　		 5
8
8
10		 10
16
16
20		 5
8
8
10		 5
8
8
10		 3
4
4
5		 6
8
8
10		 4
5
5
6		 6
10
10
12

V-blocks（CAV236-B）

 dimension　mm

Flatness

(μm)

Parallelism

(μm)
grade

00

 grade

0

 grade

00

 grade

0
63×63×63

1

2 3 6
100×100×100 1.5 3 4 8
160×160×100 2 4 4 8
250×250×160 2.5 5 5 10

 .Generally supply by pair. if need single pc. please adv. when order. Opening 90。. For "V" edge. Please Adv. If no need the opening.

Measuring seat　
  

TYPEL×W×H(mm)

Pole size
(mm)
Flatness of measuring seat working surface (μm)
measuring height
(mm)

150×100×40
200×150×50
300×200×50
150×φ18
300×φ35
300×φ35
2
2
2
0-100
0-250
0-250

cooperate with block rule usage centesimal meter millenarian meter, electronic exam head to relatively measure the size of fittings and finished products.
no measuring devices and wooden box attached, if required order, pls inform us.

Granite M-T Series CVA240  For inspecting relative dimensions of working-pieces in cooperative use with dial indicator or electronic probes, add gauge blocks. Indicator contact ROD DIA. Can with φ8 and 12mm, with fine adjustment control. Less indicator and wood pack.  If need please adv. when order.

dimension (mm)

 measuring(mm) Flatness (μm)
150×100 0-100 2
200×150 0-250 2
300×200 0-250 2
　
Measuring Instruments(CVA240-1) 　 Measuring Instruments(CVA240-2)
measuring flat bracket (A type）

all brackets are supported by three main pivots and four horse bolts. size from 600×450mm to 6000×3000mm is available. jointing supplied bracket is made of angle iron or U shape steel, welcome to inquiry.


　
Measuring flat bracket (A type）
measuring flat bracket

(B type)

Jack
five one set for over 2000×1000mm

Measuring flat bracket (B type)
measuring flat bracket

(C type)

granite flat bracket
800×500mm
1000×630mm
1000×750mm
1000×1000mm
1600×1000mm
Granite mechanical components
Our factory can process various granite seat, pole, beam, rule fitting of three- seat measuring machine for clients, max size is 3000×2000×600mm
Our factory can process various granite seat, gantry, slip board, printing line flat drill, milling machine, carven machine, Max size is 3000×2000×600mm
　
Perfect combination of granite and metal electron
　
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