Modular Front Counterbore Tools

Modular System Features

  • Available in HSS, Brazed Carbide and Indexable insert
  • Hermann Bilz was the first company to offer a completely modular front counterboring tool system 
  • Available with cylindrical or Morse taper shanks
  • Suitable for both spotfacing and counterboring 
  • Can be used on any type of machine tool with or without a rotating front pilot

Modular Design:

Ordering Example for Counterbore with Cone Size 3:

Counterbore Head HSS D=20mm (A200301)
Pilot Set D=8mm (GZ1300800)

Holder with Shank MK3 (H1303)
Extractor (H830)

*Counterbores with pilots can be locked in the holder. (e.g. in machining center) by use of HB/HBS Holders, HB Pilots and extractor closer HB.

Front Counterboring Heads

Front Countersinking Heads


Holders & Shanks

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