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Aluminium straight edges are widely used in industries where along with accuracy weight is also important factor. Light Weight Aluminum Straight Edge feature of these aluminium straight edge make them easy to use especially when using longer straight edge this is undoubtedly of great significance. These straight edge are made of aluminium section with steel strip reinforced on working surfaces for better working and durability. Each Luthra aluminium straight edges is provided with computerized calibration certificate traceable to NPL (Govt. Of India)

aluminium straight edges

Standard sizes and accuracy of light weight aluminium straight edge As per Grade 1:

Size mm Straightness um Parallelism um
1000 21 42
1500 29 58
2000 37 74
2500 46 92
3000 54 108
4000 71 142
5000 87 174

Tools Makers Knife Edges. These knife edges are manufactured from 100 mm to 500 mm length as per IS 3512:1966. Intended for very accurate work, these have one working edge, which is bevelled and very slightly rounded off. The working edge is finished either by grinding or lapping. We make use of high grade alloy steel in hardened form to design these edges. Further, our Knife edges are suitably heat treated to remove internal stress. Our Tool Maker’s knife edges are supplied with computerized calibration certificate traceable to National Physical Laboratory (NPL, Govt Of India ) New Delhi.

tools makers knife edges

Standard Size and accuracy of Luthra Knife Tool Maker Edges as per IS 3512:1966, Grade 1:

Dimensions LXBXH mm Straightness um
100 X40X 10 3
150 X 40 X 10 3
300 X 60 X 12 4
450 X 60 X 12 5
500 X 60 X 12 5

Engineers Straight Steel Edges. These are widely used for checking straightness and marking purposes. Steel straight edges are made using high quality steel and are available in hardened and unhardened form. Our steel straight edges are hand scrapped or lapped to achieve the desired accuracy as per standards. Light in weight, design of these straight edges make them ideal to use in various industries such as Glass, Fabrication and windmill. The Engineer’s steel straight edges of bigger size are provided with milling slots to reduce weight. Our Steel Straight edges are supplied with computerized calibration certificate traceable to National Physical Laboratory (NPL, Govt Of India ) New Delhi.

engineers steel straight edges

Standard sizes and accuracy of Luthra Engineer’s Steel Straight Edges as per IS:2220-1990, Grade-1:

Dimensions LXBXH mm Straightness um Parallelism um
300 X 35 X 8 12 24
450 X 35 X 8 12 24
600 X 50 X 8 15 30
lOOOx 50 x 8 21 42
1200 X 55 X 10 25 50
1500 X 65 X 12 29 58
2000 X 65 X 12 37 74
2500 X 65 X 12 46 92
3000X 85 X 18 54 108
4000 X 100 X 20 71 142
5000 X 100 X 20 87 174
6000 X 120 X 20 100 200

We are offering a qualitative range of Cast Iron Bench Center that are accurate, precise and offer quick method for inspecting radial run out of camshafts, crankshafts and cylindrical shafts etc. Manufactured as per IS: 5980-1978, these cast iron bench center are utilized in machine shops, tool rooms and standard rooms for checking various parameters such as concentricity, Straightness and True rotation of components. Bench centers manufactured at our works are made up of close grained cast iron and finished to higher degree of accuracy by hand scrapping.

cast iron bench center
Sizes mm
(L x B)		 Centre
Distance
mm		 Centre
Height
mm		 Co-axiality
of centres micron (um)		 Parallellism of the
axis of the centre
with respect to guide ways.
300 X 125 300 125 10 lOum/300 mm
300 X 160 300 160 10 lOum/300 mm
500 X 160 500 160 15 lOum/300 mm
500 X 200 500 200 15 15 um/300 mm
750 X 160 750 160 20 lOum/300 mm
750 X 200 750 200 40 15 um/300 mm
1000 X 160 1000 160 20 lOum/300 mm
1000 X 200 1000 200 40 15 um/300 mm
1250 X 160 1250 160 20 lOum/300 mm
1250 X 200 1250 200 40 15 um/300 mm
1500 X 160 1500 160 20 lOum/300 mm
1500 X 200 1500 200 40 15 um/300 mm
2000 X 200 2000 200 40 15 um/300 mm
2000 X 250 2000 250 40 15 um/300 mm
2500 X 250 2500 250 40 15 um/300 mm
2500 X 300 2500 300 40 15 um/300 mm
2500 X 500 2500 500 60 20um/300 mm

Some of the salient features of our Bench Centers are:

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 plate are made of good quality close grain cast iron as per IS-210:1993 confirming to grade FG-220. The meticulous manufacturing processes that are carried out at our premises make these C.I surface plate 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 team of qualified engineers carries out rigorous quality control inspection to test these surface plates as per IS-2285:2003 for flatness,reputability, durability etc. The final inspection of surface plate is undertaken by a high precision computerized electronic level make Cast Iron Surface Plate.

cast iron surface plates
Sizes mm (Lx B) Grade O um Grade l um
12″ X 12″ 3.5 7
12″ X 18″ 4.5 9
18″ X 18″ 4.5 9
18″ X 24″ 5 10
24″ X 24″ 5 10
24″ X 30″ 5 10
24″ X 36″ 6 12
36″ X 36″ 7 14
36″ X 48″ 7 14
Sizes mm (Lx B) Grade O um Grade l um
250 X 250 3.5 7
400 x400 4.5 9
630 X 400 5 10
630 X 630 5 10
600 X 750 5 10
1000 X 630 6 12
1000 X 1000 7 14
1200 X 600 7 14
1200 X 900 7 14
1200 X 1200 8 16
1000 X 1600 8 16
1000x 2000 9.5 19
1200 X 1800 9.5 19

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

Special Provision:

Granite Surface Plate which 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 plates. Further the final inspection is carried out as per IS-7327:2003 by a high precision computerized electronic level made by Granite Surface Plate. Our range of precision granite surface plates are utilized in precision tool rooms, engineering industries and research laboratories.

granite surface plates
Sizes in mm (L x Bx H) Accuracy  um       Grade ‘O’
400 X 400 X 63 4.5
630 x 400 X 80 5
630 X 630 X 80 5
1000 X 630 X 150 6
1000 X 1000 X 150 7
1200 X 900 X 150 7
1200 X 1200 X 150 8
1600 X 1000 X 200 8
2000 X 1000 X 200 9.5

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


Other Details:

electronic zero setter-6550 electronic zero setter-6550_01 electronic zero setter-6550_02
Code Height (H) Accuracy
6550-50A 50mm ±10µm

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ceramic edge finder-6568 ceramic edge finder-6568_01 ceramic edge finder-6568_03
Code Shank(A) Contact point(B) Accuracy
6568-1 Ø10mm Ø10mm 8µm

Check the PDF