Certificate ISO Veritas

Granite Surface Plate

  • Granite Surface Plate

Granite Surface Plate - Overview

JASH 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 compensating hump when nicked, longer wear, smoother action, greater precision, non-magnetic, less care after commissioning, lower co-efficient of thermal expansion and non-glaring surface. These features make JASH one of the best granite surface plate manufacturers in the industry.

Salient Features

  • Made from close grained Granite having uniform color and texture having hardness 5.6 to 7 on Moh's scale, free from flaws, fissures and large inclusions of softer minerals.
  • Made generally as per IS-7327. Also available on request conforming to DIN-876, BS-817, JIS -B-7513 and US Federal specification GGG-P-463-C.
  • Metalic threaded inserts, Metalic T-slots, Plates with two or four ledges can also be supplied against specific request at extra cost.
  • Rexine cover provided for top working surface with standard size plates.
  • Fabricated Frame / Cupboard type / Cast Iron column type stand with leveling screws are available on request at extra cost.
  • Active and Passive air mounts are offered upon request, at extra costs.
  • Granite Lapping Plates square and rectangular available on request.

Standard Sizes of Granite Surface Plate

Size in mm
L x B
160
x 100
250 x 160
250 x 250
400 x 250
400 x 400
630 x 400
630 x 630
1000 x 630
1000 x 1000
1600 x 1000
2000 x 1000
Flatness tolerances of various grades ( in microns )
Grade 0 Grade 1 Grade 2 Grade 3
3.0 6 12 25
3.5 7 14 27
3.5 7 15 30
4.0 8 16 32
4.5 9 17 34
5.0 10 20 39
5.0 10 21 42
6.0 12 24 49
7.0 14 29 56
8.0 16 33 66
9.5 19 38 75

Other Available Sizes

300 x 300 450 x 450 500 x 500
600 x 400 600 x 600 750 x 500
750 x 600 800 x 500 800 x 600
900 x 600 1000 x 600 1200 x 600
900 x 900 1200 x 800 1200 x 900
1500 x 1000 1200 x 1200 2000 x 1500
2400 x 1200 2000 x 2000 3000 x 1000
3000 x 1500 3000 x 2000 4000 x 1000
Other sizes also available upon request.