Erwin Junker Maschinenfabrik GmbH
Junkerstrasse 2
77787 Nordrach

Groove Grinders NAJ I/B - Erwin Junker Maschinenfabrik GmbH

CNC tool grinding machine.
Grinding flutes with NAJ IB

The NAJ IB CNC flute grinding machine is the ideal solution for flute grinding on pump pistons or similar workpieces. This is how the JUNKER high-speed grinding process, with the CBN grinding wheels working at an extremely fast peripheral speed, guarantees highly-precise dimensional accuracy, surface quality and the shortest conceivable cycle times.


  • Fully-automated feed system, eliminating the need to handle the workpiece during transport in and out
  • No adjustment in the machine for retooling
  • High utilisation ratio thanks to short retooling times and extremely low maintenance requirement
  • Factory-compliant, simple operation and easy, safe working procedures
  • Freely adjustable cutting speed setting



Company name
Erwin Junker Maschinenfabrik GmbH
Business Type Manufacturer
Exportregion Worldwide