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Jash Precision Tools Limited
Jash Precision Tools Limited


Precision Surface Equipments

Offering you a complete choice of products which include cast iron surface plate, granite surface plate, cast iron angle plate, cast iron stacked box table, cast iron box angle plates and cast iron straight edges.

Cast Iron Surface Plate

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Cast Iron Surface Plate
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Product Details:
BrandJASH
Size250 x 250 to 7000 x 2000 mm
Sizes Available160x100mm to 3000x2000mm
Surface FinishHand scrapped

JASH Cast Iron Surface Plates and Tables serve as a precision reference base for inspection, tool making, gauging, spotting, marking and layout operations. Stands enable proper leveling of plate and help provide the top surface at a convenient working height of approx. 850 to 900 mm from the floor.


Salient Features:

  • Made generally as per IS:2285
  • Made from close-grained plain cast iron conforming to grade FG: 220 of IS: 210 – 1978.
  • Castings stress relieved to relieve internal stresses.
  • Hand scraped surface finish.
  • Sizes Available from 160x100mm to 3000x2000mm


* Other sizes can be offered on request.

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Granite Surface Plate

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Granite Surface Plate
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Product Details:
Unit Size (mm X mm) 160x100mm to 4000x1000mm
DesignCustomized

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.

 

Salient Features :

 

  • Made from close-grained Granite having uniform color and texture having hardness between 5.6 to 7 on Moh's scale, sound and free from flaws fissures and large inclusions of softer minerals.
  • Made generally as per IS-7327-91. Also available on request conforming to DIN-876-1972, BS-817-1988, JIS -B-7513 and US Federal specification GGG-P-463-C.
  • metallic threaded inserts, metallic 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 Plate.
  • Fabricated Frame / Cupboard type / Cast Iron column type stand with leveling screws are available on request at extra cost.
  • Granite Lapping Plates square and rectangular available on request.
  • Also available in Grade 00 as per DIN 876.
  • Sizes offered from 160x100mm to 4000x1000mm
  • Other sizes are also offered on request.
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Cast Iron Angle Plate

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Cast Iron Angle Plate
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Product Details:
Surface FinishHand scraped
Sizes Offered125x75x100mm to 600x600x1000mm

JASH Cast Iron Angle Plate provides a practical means for clamping and holding work in the vertical position for layout, tooling and machining. Angle Plates are also used as a vertical reference for inspection and tooling purposes. They make an ideal fixture for shaping, planing, milling, grinding, drilling and boring operations.

 

Salient Features:

  • Made generally as per IS:2554, JASH Standard Angle Plates are webbed and provided with cored slots on both working faces to facilities clamping.
  • Made from close-grained plain cast iron conforming to Grade FG : 220 of IS : 210.
  • Castings stress relieved.
  • Smaller sizes offered with Grades 1 & 2 accuracy and larger sizes offered in Grade 2 accuracy, as stated in table.
  • Hand scraped surface finish for Grade-1 accuracy. Smooth machined / rough ground / rough scraped Surface finish for Grade 2 accuracy.
  • Precision Angle Plates in standard sizes with accuracy as per IS : 6973, but made from the same patterns as those for the standard sizes as per IS : 2554, are made upon request.
  • Vertical face of is T-slotted Angle Plates provided with horizontal machined T-Slots and the base / table face is having cored slots. Other construction features are similar to those in case of standard angle plates as per IS : 2554.
  • T-slot dimensions conform to IS : 2013. T-Slots are fixing T-Slots with tolerance H12 and are machined parallel to base and to each other within 0.1 mm per meter.
  • Squareness tolerances are as shown in table. Other tolerances are generally as per IS : 2554. Higher tolerances for squareness as well as for T-slots can be ensured upon request.
  • Sizes offered from 125x75x100mm to 600x600x1000mm. Custom sizes can be offered upon request.
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Cast Iron Stacked Box Table

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Cast Iron Stacked Box Table
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Product Details:
Design TypeCustomized
Size1000 x 750 x 900 mm

Jash large size cast iron stacked box table serves as a versatile tool for layout machine set – UPS, tooling and inspection of large jobs. They can also be used as right angles and squares.

 

Salient features:

 

  • Made from close-grained plain cast iron conforming to grade FG 220 of IS:210 (equivalent to GG20 / FT20 / 30-A). Higher grades also offered on request.

  • Casting stress relieved to relieve internal stresses.

  • These can be made in single piece or in two sections that can be used either single or in combination for comprehensive applications for jobs or fixtures 5 meter or more in height.

  • Highly customized and specifically designed as per load requirement.

  • The T-slots on vertical face as well as on top face provided along and / or across the length, as required.

 

Sizes Available (H x L x B):

 

  • 1000 x 750 x 900 mm

  • 1220 x 1524 x 1220 mm

 

Other sizes can be offered on request.

 

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Cast Iron Box Angle Plates

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Cast Iron Box Angle Plates
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Product Details:
Sizes Available125x75x100mm to 600x400x450 mm
Hardness170-220 HB

JASH Cast Iron Box Angle Plates serve as a versatile tool for layout machine setups, tooling and inspection. They can also be used at right angles and squares. A job can be fixed on one of its faces and rotated in five positions without the need for repositioning or disturbing accuracy. They can easily be made into special fixtures by providing tenons, pins or stops. Matched pairs can be used as Parallels and Height Blocks.

 

Salient Features:

 

  • Made generally as per IS:6232
  • Made from close-grained plain cast iron having hardness within 170-220 HB.
  • Castings stress relieved .
  • Hand scraped surface finish for Grade 1 accuracy.
  • Hand scraped / ground finish for Grade 2 accuracy.
  • Machined T-slots on one face and cored as – cast slots on four opposite faces provided to facilitate clamping.
  • Can be offered in matched pairs upon request, at extra cost.
  • Precision Box Angle Plates conforming to IS : 6985 having tolerances approximately half of those in Grade 1 made upon request.
  • Sizes offered from 125x75x100mm to 600x400x450 mm.
  • Other sizes offered on requests
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Cast Iron Straight Edges

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Cast Iron Straight Edges
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Product Details:
Sizes Available600mm to 6000mm
TypesBow shaped, Camel Back Type

Parallel & Camelback Type Straight Edges

JASH I-Section Type Straight Edge is widely used for setting up and leveling machinery and for checking and spotting bearing surfaces during hand scraping operations. Properly supported, they may be used with various indicating devices to check surface flatness of large machined areas like Surface Tables, Machine Tables and Bed, Machine ways etc.


Salient Features:


  • Offered in two types viz Bow shaped or Camel Back Type and I-section or Parallel type, in standard sizes generally as per IS : 5268
  • Bow shaped straight edges are provided with pads on their bow for supporting Engineer’s level.
  • Made from close-grained plain cast iron conforming to Grade FG: 220 of IS: 210.
  • Castings stress relieved.
  • Offered in three grades of accuracies viz Grades 0, 1 and 2. Standard sizes, dimensions, flatness and parallelism tolerance are as stated in table.
  • Straightness accuracy checked by Electronic level. Plot of the working surface contour is furnished.
  • Hand scraped surface finish for Grade 0 and 1 Straight Edges. Smooth machined / ground / scraped surface finish for Grade 2 straight edges.
  • High spots uniformly distributed. Proportion of bearing area of the working surface not less than 20 percent for Grades 0 and 1 straight edges and not less than 10 percent for Grade 2 straight edges.
  • Flatness of side faces: Any 300 mm length flat within 25 microns for Grades 0 and 1 and within 50 microns for Grade 2, subject to the maximum tolerance on flatness over the whole length, as under. For straight edges up to and including 4000 mm length, 50 microns for Grades 0 and 1 and 100 microns for Grade 2. For straight edges longer than 4000 mm 100 microns for Grades 0 and 1 and 200 microns for Grade 2.
  • Squareness of working surface and side faces when checked with side face laid on Grade 1 surface plate. For Grades 0 and 1 : within 8 microns per 25 mm For Grade 2 : within 15 microns per 25 mm.
  • Parallelism of side faces For Grades 0 and 1 : Not exceeding 30 microns per 300 mm and 60 microns over the whole length. For Grade 2 : Not exceeding 60 microns per 300 mm and 120 microns over the whole length.
  • Supplied with plywood covers for protecting working faces and edges.
  • Two numbers Grade 1 parallel straight edge of the same length can be offered as a matched pair at extra cost, ensuring equality of overall depth within the tolerance on parallelism for the respective length of the straight edge.
  • The actual dimensions of straight edges may be even more than those stated in the table below.
  • No two straight edges of the same length will have any of the dimensions exactly the same, except in case of two numbers parallel straight edges made specially as a matched pair wherein only the overall depth shall be equal within the tolerance on parallelism for the respective length.
  • Sizes offered from 600mm to 6000mm.
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Jash Precision Tools Limited
Rasesh Amin (CEO)
Plot No. 87, Industrial Estate, Polo Ground ,
Indore - 452015, Madhya Pradesh, India
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