Application

Tube sheet drilling with the BTU drill head

In the past, when drilling 18,000 holes in a tube sheet, drills had to be replaced every 15 holes. But our tool life has improved to 25 holes, reducing drill usage from 1,200 to 720.

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BTU Drill Head
Component Tube sheet
Material SA508 Gr.3 Cl.2 +
Inconel 690
Application Solid drilling
Tool diameter ø19.28 mm
Machine BTA machine
Coolant Oil based
Cutting speed 90 m/min
Spindle speed 0.16 mm/rev
Chip Breaker BA
Grade 1132 (UX2+ZAP)

Turbine Casing drilling with the DTS tooling

The casings, huge components of power generators, require a large number of bolt holes which in the past demanded long machining time with high-speed steel drills and finish boring. Unitac's innovative DTS tooling has been able to dramatically reduce this machining time from 250 min. to 20 min.

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Tooling of Double Tube Connector
Component Turbine casing
Material Low alloyed steel
Application Solid drilling
Tool diameter ø118 mm
Machine Horizontal boring and milling machine
Coolant Oil based
Cutting speed 110 m/min
Spindle speed 0.17 mm/rev
Chip Breaker G
Grade UC2220 (NLX)

High quality surface finish with the HF drill

Burnishing effect improves surface finish. Possible to eliminate finishing process.

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HF Drill
Material Carbon steel
Tool diameter ø30 mm
Drilling depth 200 mm
Machine BT50 M/C
Coolant Emulsion
Cutting speed 100 m/min
Spindle speed 0.1 mm/rev

High-speed train axle drilling with Unidex

Drilling D60X2600mm, Unidex achieved the required hole tolerance in one pass before honing. Also helped to reduce operation process, lowering overall machining time.

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Material Carbon steel
Tool diameter ø60 mm
Drilling depth 2,600 mm
Coolant Oil based
Cutting speed 80 m/min
Spindle speed 0.16 mm/rev
Chip Breaker BR1
Grade UC1125 (DLXT)

Wind power generator, main shaft drilling with Unidex

Unidex achieved straightness of 0.2mm/1,500mm in one pass solid drilling of high hardness steel.

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Material Low alloyed steel
Tool diameter ø155 mm
Drilling depth 1,500 mm
Coolant Oil based
Cutting speed 49 m/min
Spindle speed 0.12 mm/rev
Chip Breaker G
Grade UC2220 (NLX)

Power steering shaft drilling with BTU drill head

Drilling D12.6x500mm, reduced machining time significantly from 4.5 min. to 2 min. per workpiece with STS (BTA) drilling which replaced gundrilling. Also better accuracy was achieved.

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Material Carbon steel
Tool diameter ø12.6 mm
Drilling depth 500 mm
Machine BTA machine
Coolant Oil based
Cutting speed 90.6 m/min
Spindle speed 0.12 mm/rev
Grade 2122 (N3+ZAP)

Drilling time reduced with FINE BEAM in spindle drilling

Drilling time was reduced by half than existing tool. Hole straightness is also improved by 30%.

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0124 Drill Head
Component Spindle
Material Alloyed steel
Application Solid drilling
Tool diameter ø32.2 mm
Drilling depth 1500 mm
Machine BTA machine
Coolant Oil based
Cutting speed 69 m/min
Spindle speed 0.18 mm/rev
Chip Breaker G
Grade UC2220 (NLX)

Longer tool life with FINE BEAM in shaft drilling

Tool life is longer than competitive product by 1.7 times. Also hole straightness is improved by 80%.

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0124 Drill Head
Component Shaft
Material Alloyed steel
Application Solid drilling
Tool diameter ø59.75 mm
Drilling depth 1000 mm
Machine BTA machine
Coolant Oil based
Cutting speed 56 m/min
Spindle speed 0.16 mm/rev
Chip Breaker G
Grade UC2220 (NLX)