Large Molds: BT-A 
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The Challenge

The customer manufactures large automotive molds made from P20 (28-32 Rc) using a Schienke tri-spindle deep hole drilling machine with canola base soluble oil coolant at 280 PSI (19 bar).

The operation was not cost effective due to inconsistent tool life and very low penetration rates. The customer needed an improved solution.

The shop supervisor was so impressed, he stated, “At this point their performance (BT-A) outweighs the cost. Just get them here if you can.” The BT-A made a huge difference for this customer.


Product: BT-A
Objective: Improve process
Industry: Automotive
Part: Large automotive molds
Material: P20
Hole Ø: 1.156" (29.362mm)
Hole Depth: 102" (2590.8mm)

The Solution
The BT-A Drill
  • BT-A Drill head: BTA2-805-1.1560
  • GEN2 T-A insert: 4C12H-0105-HE
Measure Competitor BT-A
RPM 600 575
Feed Rate 0.0012 IPR (0.0305 mm/rev) 0.009 IPR (0.2286 mm/rev)
Penetration Rate 0.7 IPM (17.78 mm/min) 5.2 IPM (132.08 mm/min)
Cycle Time 20 hours 7 hours

The Advantages
The BT-A Drill provided:
  • 65% cycle time decrease
  • Decreased costs