DeHoff BTA/STS

Versatile drilling machines for large diameter holes

The DeHoff BTA/STS line of drilling machines offer larger drilling capacities for large diameter hole applications, such as those typically seen in the aerospace and petrochemical industries. Four different models are offered with 2 to 6 inches (50.8 to 152.4 mm) of drill capacity available.

Because of the large workpieces typically involved, many different fixturing options can be designed and built to suit your application.

Each DeHoff BTA/STS machine also includes our robust coolant system and a Microsoft Windows®-based controls package.

The DeHoff Advantage:

BTA/STS 20 Specifications

  • Drill Capacity 2 in (50.8 mm)
  • Slide Travel 36 in (914 mm) or
    60 in (1524 mm) or
    84 in (2134 mm) or
    120 in (3048 mm)
  • No. of Spindles 1
  • Spindle Power 20 hp (14.9 kW)
  • Spindle RPM 92 – 4,875
  • Feed Rate 0.1 – 30 in/min (2.5 – 762 mm/min)
  • Coolant Flow 60 gpm (227 L/min)
  • Coolant Pressure 500 psi (34.5 bar)

BTA/STS 30 Specifications

  • Drill Capacity 3 in (76.2 mm)
  • Slide Travel 120 in (3048 mm)
  • No. of Spindles 1
  • Spindle Power 40 hp (29.8 kW)
  • Spindle RPM 60 – 2,190
  • Feed Rate 0.1 – 30 in/min
 (2.5 – 762 mm/min)
  • Coolant Flow 120 gpm (454 L/min)
  • Coolant Pressure 500 psi (34.5 bar)

BTA/STS 40 Specifications

  • Drill Capacity 4 in (102 mm)
  • Slide Travel 60 in (1524 mm)
  • No. of Spindles 1
  • Spindle Power 50 hp (37.3 kW)
  • Spindle RPM 60 – 2,190
  • Feed Rate 0.1 – 30 in/min 
(2.5 – 762 mm/min)
  • Coolant Flow 150 gpm (568 L/min)
  • Coolant Pressure 500 psi (34.5 bar)

BTA/STS 60 Specifications

  • Drill Capacity 6 in (152 mm)
  • Slide Travel 60 in (1524 mm)
  • No. of Spindles 1
  • Spindle Power 100 hp (74.6 kW)
  • Spindle RPM 60 – 2,190
  • Feed Rate 0.1 – 30 in/min
 (2.5 – 762 mm/min)
  • Coolant Flow 150 gpm (568 L/min)
  • Coolant Pressure 500 psi (34.5 bar)

10 Series

High-volume production gundrilling

20 Series

High-torque gundrilling applications

Multi-Axis

Gundrilling complex hole patterns

Gun Barrel

The complete gun barrel manufacturing system

Custom Machines

Unique solutions to meet your production requirements

Features & Options

Learn more about the DeHoff coolant system, machine control, fixturing options, and high-torque gearbox

Which machine is right for your application?

Call us! We're here to help you.

Ed Kays, President
660.886.9929 (ext. 116)
ekays@kays-dehoff.com