Realized the world’s longest depth of 105L with the world’s smallest diameter gun drill (φ0.5)!

Advantages compared to other ultra-small diameter deep hole drilling methods.
Compared with other ultra-small diameter deep hole machining such as electrical discharge machining,

ultra-small diameter deep hole machining with a gun drill has the following advantages.

  • Quick processing time.
  • Highly precise processing
  • Enables to process non-metal substances.
  • Cleaner inner surface by its burnishing effect
  • Low cost compared to EDM.
Φ0.5×60㎜ work