Overlong Spindles

FINI®LONG – Deep hole grinding with extra long spindles

Deep hole grinding is the leading discipline regarding internal grinding – it has developed in recent years to an increasingly important component in the production spectrum of the aerospace industry. In comparison to classical internal grinding operations with a diameter to length ratio of 1:10 you can grind with FINI®LONG spindles work pieces with a diameter to length ratio up to 1:20. Therefore the FINI®LONG coupling shaft principle is used, which provides extraordinary results in difficult cutting operations in deep holes.

  • Standard spindle housing Ø 25 up to 120 mm and length up to 1250 mm
  • High precision bearings with grease lubrication
  • Other dimensions on request – diameter to length ratio up to
    1:20 possible
  • Labyrinth seal system
  • Rotation clockwise or anti-clockwise