Thread Grinding Machine TGN30/30


Thread grinding machine achieving high accuracy and high rigidity

  • High-rigidity, high-accuracy thread grinding machine pursuing workability and operability with distance between centers of 300mm(11.8in).
  • Helix angle control by easy numerical entry.
  • Improvement in stability of pitch diameter of thread by locating a dresser in the back of work spindle.
  • Full-closed control on each axis achieving high-accuracy thread grinding.




Distance between centers 300 mm(11.8 in)
Thread length 250 mm(9.8 in)
Thread diameter ø90 mm(3.5 in)
Supportable workpiece weight 20 kg(44 lb)
Swivel angle of wheelhead ±30°
Grinding wheel dimension ø400 mm(15.7 in) × 30 mm(1.1 in) × ø203.2 mm(8.0 in)
Grinding spindle rotation speed 2,700min-1
Floor space (W×D) 2,050 mm(80.8 in) × 3,500 mm(137.8 in)


Simple and user-friendly operability and workability

Numerical-controlled swivel of wheelhead enables helix angle change by easy numerical entry. It provides high-accuracy thread grinding for various workpieces such as spindle, tool, thread gauge, ball screw, etc.

Full-closed control on each axis achieving high-accuracy thread grinding

Rotary encoder with 0.0001°control on work spindle, and optical scale feedback control on X & Z-axis are equipped as standard. By equipping built-in type grinding spindle as standard, machine vibration is minimized to achieve high-accuracy thread grinding even with small-diameter thread.

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