High Strength Black Granite Surface Plate Machine Weight: 20-3000 Kilograms (Kg)

GRANITE SURFACE PLATE (As per IS 7327 a 2003)

NTMT Granite Surface Plates are as a precision datum base for
Inspection, tool marking, gauging, spotting, marking and layout operations.

MATERIAL: Granite surface plates are made from selected granites with uniform distribution of light and dark constituents. It has a fine grind, non porous texture and grind size measures less than 1 mm. It has a constant hardness throughout 6 to 6.5 moss scale and 3 times harder than cast iron surface plate. It has very lowest thermal co-efficient of expansion, 100% rust proof and acid resistance, non electric-conductive and easy to clean. Maintenance costs are practically nil. If may chip but cannot develop a burr.

TECHNICAL DATA: Granite surface plates are manufactured in 4 grads of accuracy.
> Grade 00 (Laboratory Grade) as per DIN Standard only
> Grade 0 (Inspection Grade) as per IS 7327 - 2003
> Grade 1 (Tools Room Grade) as per IS 7327 - 2003
> Grade 2 (Shop Floor Grade) as per IS 7327 a 2003
> Grade 3 (Workshop Grade) as per IS 7327 a 2003

ACCURACY: Granite surface plates are hand lapped and finally by experienced technicians. Final inspection is carried out by high precision Electronic level with computerized software method to meet the requirement of IS 7327:2003 and also provide NABL Accreditation Certificate.

The following sizes and grades are available:-

SIZE In mm
(L x W x Thick) Approx Weight
in Kg. Grade of
Accuracy Flatness
Error
300*300*50 22 0 2
400*400*80 40 0 4
630*400*80 70 0 5
630*630*80 100 0 5
1000*630*150 350 0 6
1000*1000*150 475 0 7
1600*1000*200 1100 0 8
2000*1000*200 1600 0 9.5

Other big Sizes On request We make 3000*2000*300 mm single piece