TechniDrill TBTA-3A-6 Deep Hole Drilling Machine

May 20, 2023
Kays' 3-axis deep hole drilling machine can drill a 6-in. diameter hole from solid in a single pass.

The TechniDrill TBTA-3A-6 is a deep-hole drilling machine using the BTA process (Boring & Trepanning Association). It can drill a 6-in. diameter hole from solid in a single pass and has 3-axis capability. The machine has applications in the aerospace, mold, and oil & gas industries.


The TBTA-3A-6 has 6 in. (152 mm) of BTA drilling capacity and 48 in. (1,219 mm) of drilling depth. The work table moves horizontally back and forth to provide the X-axis travel, and the drill slide moves vertically on a column to provide Y-axis travel. The spindle motor is available with up to 75 hp. The high-pressure coolant system is rated at 200 GPM of coolant flow and 1,500 psi of coolant pressure.

 Drill Capacity 6 in. (152 mm)
 Slide Travel Z = 48 in. (1219 mm)
 Table Travel X = 24 in. (610 mm)
 Column Travel Y = 24 in. (610 mm)
 No. of Spindles 1
 Spindle Power 75 hp (55.9 kW)
 Spindle RPM 25 to 1,500
 Counter-Rotation Power N/A
 Counter-Rotation RPM N/A
 Feed Rate 0.5 to 24 in./min (12.7 to 610 mm/min)
 Coolant Flow 185 GPM (700 LPM)
 Coolant Pressure 750 psi (51.7 bar)