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Cold Worked Precision Bars is one of Ambica’s
premium product lines. These super finished
precision bars are processed using the ultra-modern
combined lines & state of the art equipments. Each
bar is taken through the well-controlled heat
treating furnaces and quenching tanks in order to
achieve a more reliable product with an increased
consistency in the mechanical properties. After the
cold-working process, all mechanical and
technological data is checked in reference to the
customer’s order. Ultrasonic Inspection & Eddie
Current Testing ensures that the bars are free from
any internal defects. The bars are then finished
using the specially designed finishing machines
which ensures that the size tolerances (including
the out of roundness) and surface roughness are
achieved as desired. These bars are packed using a
variety of protective materials & distance rings,
and then placed in the strong Ply-wood boxes.
These bars comes for variety of applications
like –
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Cylinder Shafts (Hydraulic &
Pneumatic Cylinders)
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Pump Shafts (Piston, Turbo,
Bore-well)
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Tail Lifting Shafts
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Textile Machinery Shafting
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General purpose shafting for
various Engineering Industries
Available grades
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ASTM |
Euro Norm |
|
303 |
1.4305 |
|
304L |
1.4307 |
|
316L |
1.4404 |
|
410 |
1.4005 |
|
416 |
1.4006 |
|
420 |
1.4021 |
|
430F |
1.4104 |
|
431 |
1.4057 |
|
17-4 PH, 630 |
1.4542 |
Size Range
10 mm - 75 mm (3/8 inch - 3 inch)
Diameter Tolerance
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For sizes up to 38 mm (1 ½
inch) – 0.025 mm/ h8 / f8 / g8 / e8 (0.0010
inch)
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For sizes 38 - 50 mm (1 ½ - 2
inch) – 0.040 mm/ h8 / f8 / g8 / e8 (0.0015
inch)
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For sizes 50 - 75 mm (2 - 3 inch)
– 0.040 mm// h8 / f8 / g8 / e8 (0.0020 inch)
Our of Roundness
half of the tolerance of the diameter
Surface Finish
up to Ra value 0.2 µm (12 RMS max)
Special Surface Tolerances
e7, g7, h7, f7, h8, f8, e8, g8
Straightness
0.5 mm per meter TIR (0.0015 inch per feet)
Length
3 upto 6.7 meters (20 feets 2 inch – 22 feets)
Packaging
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Each bundle of bars is packed
in strong ply-wood boxes. These boxes have been
specially designed to resist the jerks during
high speed transportation.
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A strong material lifting strap is
wrapped around each bundle before placing in the
wooden boxes. This strap helps in pulling out
the bundles out of box.
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Material is packed in a variety of
protective packing materials, in various layers
ensuring extra protection to the bars from
shipping vibrations.
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Several plastic distance rings are
inserted in each bar. It helps in avoiding the
surface scratches which generate out of the bar
to bar contacts, within the bundles.
Heat Treatments
Annealing, Solution Annealing, Hardening, Oil
Quenching, Tempering – as per the requirement
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