Micro-Flat Datums Pvt. Ltd.
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Micro-Flat Datums Pvt. Ltd.

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Granite Surface Plates


Details


We offer Granite Surface Plates, which are used for precision gauging, inspection, layout and marking purposes. The Granite Surface Plates, which we offer, 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 s cale , 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.
  • Metalic threaded inserts, Metalic T-slots, Plates with two or four ledges also can be supplied against specific request at extra cost
  • 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

Standard Sizes and Tolerance of Flatness

Sizes in mm Flatness tolerances of various Grades (microns)
(L x B)Grade-0Grade-1Grade-2Grade-3
160 x 1003.06.012.025.0
250 x 1603.57.014.027.0
250 x 2503.57.015.030.0
400 x 2504.08.016.032.0
400 x 4004.59.017.034.0
630 x 4005.010.020.039.0
630 x 6305.010.021.042.0
1000 x 6306.012.024.049.0
1000 x 10007.014.028.056.0
1600 x 10008.016.033.066.0
2000 x 100010.019.038.076.0
2500 x 160011.523.046.092.0

Non-Standard and Large 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
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