Cast Iron Surface Plates

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.

Special size Cast Iron Surface Plates made from one piece casting or More then one surface plate, from among the special size can be adopted to obtain yet larger made up sizes in the multiple of unit size selected.

After proper levelling and mutual alignment, overall flateness may be expected to be within TxN or even better, where T is the overall flateness tolerance of each individual smaller size sectional plate and N is the Number of plates employed for the overall made up size.

With a view to minimise problem of leveling and mutual alignment while installing as well during future periodical checks, it is advisable to select as large a unit size sectional plate as possible so that the nubmer of joints and the number of floor stands are reduced to the minimum.

 

 

 

JASH C.I. LAYOUT AND MARKING TABLES (L x W)
(Single piece construction)
1500 x 1500 2000 x 1500 2000 x 2000 2500 x 1000 2500 x 1250 2500 x 1500	2500 x 2000 2500 x 2500 3000 x 1000 3000 x 1500 3000 x 2000 3000 x 2500	3000 x 3000 3500 x 2000 3500 x 2500 4000 x 1000 4000 x 2000 4000 x 3000	4000 x 3150 5000 x 1000 5000 x 2000 6000 x 1000 6000 x 2000

 

JASH Cast Iron Lapping Plates are extensively used for accurate hand lapping of metal parts to obtain a perfect oil tight fit.

Salient Features:

• 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.
• Offered in square, rectangular and round sizes.
• Constructional features of square and rectangular sizes similar to those of Cast Iron Surface Plates as per IS: 2285.
• Flatness accuracy as mentioned in table underneath.
• Plates up to 630 x 630 mm provided with handles for lifting. Larger plates provided with cored holes in peripheral ribbing for lifting by mechanical means.
• Provided with 2 mm x 1 mm cross rectangular groves on top surface.
• Supplied with Rexene cover for top surface protection.
• Sizes available from 250x250mm to 1000x1000mm Round type available from 100mm dia to 600mm dia
• Other sizes offered upon request.