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Surface Plates

We manufacture a wide range of surface plates, which are used in various industries for tool making, inspection, spotting, gauging etc. Our range of surface plates are specifically designed to provide an accurate reference plane for work inspection and also for work layout. These granite surface plates, cast iron surface plates are strictly in compliance with international quality standards and can also be customized as per the specifications laid down by our clients. Our range of surface plates includes cast iron surface plates, precision cast iron surface plates, granite surface plates and precision granite surface plates.

Granite Surface Plate

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Granite Surface Plate
  • Granite Surface Plate
  • Granite Surface Plate
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Product Details:
Unit Size250x250 mm upto 5000 mm
Surface FinishPrecision Lapped Surface Finish
Thickness60mm-200mm
BrandLuthra
StandMS Fabricated
MaterialGranite

Granite Surface Plates are manufactured using natural black granite stone, quarried from earth in its natural form. These precision granite surface plates are precision lapped to high standards of flatness to achieve accuracy and are used as bases for mounting sophisticated mechanical, electronic and optical gauging systems. Our quality inspectors and engineers put a strict vigilance at all the stages of the production procedure to ensure high quality surface plates. 

SPECIFICATIONS:
FLATNESS TOLERANCE IN µm FOR ACCURACY GRADE
AS PER IS 7327-2003 

SIZE (in mm)

GR “0”

250 x 250

3.5

300 x 300

3.5

400 x 400

4.5

630x 400

5.0

630 x 630

5.0

1000 x 630

6.0

1000 x 1000

7.0

1200 x 900

7.0

1600 x 1000

8.0

2000 x 1000

9.5


*Other sizes on request
 

Some of the unique features of our granite surface plates are:

  • Uniformity In Hardness
  • Accurate Under Load Conditions
  • Vibration Absorbent
  • Easy To Clean
  • Rust-Proof, Non-Corrosive
  • Lower Coeffficient of Thermal Expansion 
  • Warp Resistant
  • Low Porosity
  • Non-Abrasive
  • Non-Magnetic
Other Details:
  • These advantages make black granite surface plates inherently stable and unmatched against any other material. These surface plates are supplied with a calibration certificate traceable to National Physical Laboratory (NPL, Govt of India ) New Delhi.
  • We also have our In-House NABL accredited Calibration Lab.
  • Rexin covers are provided with each surface plate for protection of top surface. 
  • We provide fabricated stand with leveling screws on request by our clients. The overall working height of surface plate with stand and leveling screw will be 900 mm (approx) from floor level.Option for vibration pads to control vibration is also available.
  • We also provide T-slots, threaded inserts as per customer's  requirement.
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Cast Iron Surface Plate

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Cast Iron Surface Plate
  • Cast Iron Surface Plate
  • Cast Iron Surface Plate
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Product Details:
Size250x250mm upto 5000mm
MaterialCast Iron
BrandLuthra
FlatnessAs Per IS2285-2003
Surface FinishHand Scrapped Surface Finish

  • We offer a qualitative range of precision Cast Iron Surface Plate. These cast iron surface plates provide an accurate reference or datum plane for precision gauging, marking, inspection and tooling setup. 
  • Cast iron surface plates are made of good quality close grain cast iron as per IS-210:1993 conforming to grade FG-220. 
  • The meticulous manufacturing processes that are carried out at our premises make these surface plates apt for machine shops, quality control, and standard rooms.
  •  Our precision cast iron surface plates are used in the application where strict accuracy is required hence, these plates are appropriate for high precision work and are ideal for blue matching. 
  • Our surface plates are amply ribbed to ensure minimum deflection under load. 
  • Our team of qualified engineers carries out rigorous quality control inspection to test these surface plates as per IS-2285:2003 for flatness, repeatability, durability etc. The final inspection of surface plate is undertaken by a high precision computerized electronic level, WYLER SWISS make.

Maximum deviation from flatness over the entire area expressed in Microns as per IS 2285 – 2003

SIZE (in mm)

GR “1”

250 x 250

7.0

300 x 300

7.0

400 x 400

9.0

630x 400

10

630 x 630

10

1000 x 630

12

1000 x 1000

14

1200 x 900

14

1600 x 1000

16

2000 x 1000

19

Some of the unique features of cast iron surface plates are:

  • Our castings are stress relieved either by natural aging or by artificial seasoning.
  • We also provide rexine cover for top surface protection.
  • We offer fabricated stand with leveling screws . The overall working height of surface plate with stand and leveling screw will be 900 mm (approx), from floor level.Option for vibration pads to reduce vibration is also available.
  • We provide computerized calibration certificate traceable to National Physical Laboratory (NPL, Government of India ) New Delhi along with each surface plate.
  • We also have an In-House NABL accredited Laboratory.


Special Provision:

  • We provide special tapped holes and T-slots at the top working surface of the surface plate for fixing work or measuring instruments at extra cost. These are offered as per customers specifications.

NOTE: Kindly refer to the video above for assisstance in levelling of a surface plate.

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Gaurav Luthra (Director)
Luthra Precision Instruments Private Limited
Plot No. 25-26, HSIIDC Industrial Estate, Double Storey
Sonipat - 131001, Haryana, India
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