Production Holemaking And Workholding Excellence


Tight tolerances for a wide range of tapping operations

Zagar thruster tapping units incorporate a lead screw assembly with our standard drilling units. Tapping units are powered by a reversing brake motor. These units serve a wide range of tapping applications, accommodating pitch sizes from 8 to 56 T.P.I. (metric sizes also available) and motor sizes up to 7.5 hp. for Zagar Home Page. for Zagar Product Overview Video


  • Greater drilling thrust since our double acting cylinder requires no springs for return
  • Efficient power transmission actuated by our involute spline driven spindle
  • Rear support bearing on spindle makes for higher radial load capability and reduced spline wear
  • Spindle T.I.R. of .0005″
  • Adjustable positive stop with .0005″ repeatability for accurate depth control
  • Peck feed options for deep hole drilling with small diameters
  • Quick speed changes made possible through the interchangeable synchronous belt and pulley kits
  • Wide variety of spindle nose options including: Jacob’s taper, drill head tang drive, and Zagar threaded nose for standard Zagar accessories
  • Protective guarding for operator safety
  • Adjustable limit sensor cams
  • Standard four limit sensor kit provided for tapping units
  • Easily interchangeable lead screw and nut assembly, enabling quick changeover of tap pitches
  • Oil mist assembly for automatic lead screw and nut lubrication