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Surface Plate
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We are manufacturing granite surface plate as per required size with grade 0 accuracy as per IS 7327-2003 and rigid fabricated stand.
They are used for testing the perpendicularity and calibration of machining centers and CMMs. The granite tri squares are designed with three sided triangular shape.The main usage of the granite tri squares is to test the X, Y and Z axes for all kinds of machine bases and machine parts. These triangular squares are available in different standard and customized sizes, to suit the individual requirements of the clients.
Additional Information:
Packaging Details : WOODEN BOX
Delivery Time : WITHIN 4 WEEKS
We are manufacturing surface plate as per standard 7327-2003 , Grade 0 accuracy. Good granite grains , regid stand
On-site reconditioning and NABL Calibration of Granite Cast Iron Surface plates, bench Centre etc. From its various locations in India. SPT is a pioneer & leading manufacturer of Granite Inspection Systems of very high accuracy like Granite Surface Plates, Cast Iron Surface Plates, all other products.
Good quality, close-grained, plain cast iron or alloy cast iron at least equal to grade 250 of ISO 185 shall be used; the material shall be sound and free from blow holes and porous patches. Minor defects in working surfaces of grades 2 and 3 only may be repaired by plugging with material of composition similar to that of the plate.
After being cast and rough machined, all plates of grades O and 1 and of size up to and including 400 mm x 250 mm shall be given a suitable treatment to relieve internal stresses before being tinished. H is strongly recommended that larger plates of all grades be stress-relieved by similar means; however, where facilities for this purpose are not available, such plates may be stabilized by natural ageing by agreement with the purchaser. The manufacturer shall, on request, supply the purchaser with a statement of the stress-relieving process which the plate has received.
Cast iron surface plates shall be made with adequate ribbing and the total depth [i.e. the combined thickness of the top (working surface) and the depth of the framing] shall be such that when a concentrated load is applied about the centre of the plate, the loaded area shall not deflect below the remaining area of the plate by more than 1 pm/200 N. The limiting value for deflection applies to surface plates of size 400 mm x 250 mm and larger.
Additional Information:
Packaging Details : WOODEN PACKING
Delivery Time : IMMEDIATE
Granite surface plate grade 0 accuracy
IS 7327-2003
Selected Granite
nabl report
Additional Information:
Delivery Time : IMMEDIATE
Size
| Base Size | Column Travel | Remarks |
|---|---|---|
| 200x150 x 50mm | 250mm | With fine adjustment of 3 mm range |
| 250 x 200 x 50mm | 250mm | With fine adjustment of 3mm range |
| 300 x 250 x 50mm | 250mm | With fine adjustment of 3mm range |
Bench Centre
| Admit Between Center | Height of Center (mm) | ||
| 500mm | 150 | 200 | 250 |
| 750mm | 150 | 200 | 250 |
| 1000mm | 150 | 200 | 250 |
| Custom built and special sizes on request. | |||
Permissible Deviations
| Height of Center | Parallelism of the Axis of Centres with Respect to Guideways | Co-axiality of Center |
| 125 and 160 | 0.010 mm/300 mm leaning towards the free end of the mandrel | 0.010 mm over any length of 300 mm. Total error of 0.015 mm for Emax up to 500 mm. Total error of 0.020 mm for Emax greater than 500 mm |
| 200 to 300 | 0.015 mm/300 mm leaning towards the free end of the mandrel | 0.015 mm over any length of 300 mm. Total error of 0.020 mm for Emax up to 500 mm. Total error of 0.040 mm for Emax above 500 mm |
Size
| Base Size | Column Travel | Remarks |
|---|---|---|
| 200x150 x 50mm | 250mm | With fine adjustment of 3 mm range |
| 250 x 200 x 50mm | 250mm | With fine adjustment of 3mm range |
| 300 x 250 x 50mm | 250mm | With fine adjustment of 3mm range |
Mr. Sanjeev Kumar K. (Sanjeev Precision Technologies)
No. 4144, B Type, Mathur MMDA, Manali, Chennai, Tamil Nadu - 600068, India
https://www.granitesurfaceplatemanufacturers.com
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