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Granite Surface Plates

- Jan 10, 2018 -

Granite Surface Plates are used for precision gauging, inspection, layout and marking purposes. They are preferred by Precision Tool Rooms, Engineering Industries and Research Laboratories because of their following outstanding advantages:

No rust, no corrosion, relatively warp-free, no compensation hump when nicked, longer wear, smoother action, greater precision, nonmagnetic, less care after commissioning, lower co-efficient of thermal expansion and non-glaring surface.

SALIENT FEATURES :

  • Made from close grained Granite having uniform colour & texture having hardness between 5.6 to 7 on Moh's scale, sound and free from flaws fissures and large inclusions of softer minerals.

  • Made generally as per IS-7327-2003. Also available on request conforming to DIN-876-1972, BS-817-1988, JIS-B-7513 and US Federal specification GGG-P-463-C.

  • Rexine cover provided for top working surface with each Surface Plate.

  • MS Fabricated Stand / Cupboard type / Cast Iron individual Column type Stand/Granite special Stand with Vibration Isolation Plates with leveling screws are available on request at extra cost.

  • Metalic threaded inserts, Metalic T-slots, Plates with two or four ledges also can be supplied against specific request at extra cost.

STANDARD SIZES AND TOLERANCE OF FLATNESS
Size in mm
Flatness tolerances of various Grades (microns)
(L x B)
Grade - 0
Grade - 1
Grade - 2
Grade - 3
160 X 100
3.0
6.0
12.0
25.0
250 X 160
3.5
7.0
14.0
27.0
250 X 250
3.5
7.0
15.0
30.0
400 X 250
4.0
8.0
16.0
32.0
400 X 400
4.5
9.0
17.0
34.0
630 X 400
5.0
10.0
20.0
39.0
630 X 630
5.0
10.0
21.0
42.0
1000 X 630
6.0
12.0
24.0
49.0
1000 X 1000
7.0
14.0
28.0
56.0
1600 X 1000
8.0
16.0
33.0
66.0
2000 X 1000
10.0
19.0
38.0
76.0
2500 X 1600
11.5
23.0
46.0
92.0

NON-STANDARD AND LARGES SIZES

500 X 500

600 X 450

600 X 600

750 x 500

750 X 600

800 X 600

900 X 600

1000 X 500

1000 X 600

1000 x 750

1200 x 800

1200 x 900

1200 x 1200

1500 x 750

1500 x 1000

1500 x 1200

1500 x 1500

1800 x 1200

2000 x 1250

2000 x 1500

2000 x 2000

2400 x 1200

2500 x 1000

2500 x 1500

2500 x 1600

2500 x 2000

3000 x 1000

3000 x 1250

3000 x 1500

3000 x 2000

3000 x 2500

3000 x 3000

4000 x 1000

4000 x 1500

4000 x 2000

4000 x 2500

4000 x 3000

5000 x 1000

5000 x 2000

6000 x 1000

6000 x 1500

6000 x 2000

Surface Plates are provided with  calibration certificate traceable to National standards from our in-house calibration Laboratory including a contour plot of flatness deviation 

granite surface plate-0007.jpg

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