Nine9 99307- 5xD-12xD Super Power Drill: Ø19mm ~ Ø40mm

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With patented center pilot insert which aids accurate and steady deep hole drilling.

  • Better surface finish
  • Better straightness
  • Better roundness

center insert 99307 CD... | Nine9 99307- 5xD-12xD Super Power Drill: Ø19mm ~ Ø40mm

Center Pilot Insert

Special geometry design delivers the benefits of the center drill in guiding position and eliminates the defects caused by the chip flow from the gap between the center drill and insert.
• High precision fully ground and edge honing to increase tool life and surface finish.
• Patented insert pocket to absorb the cutting forces, supporting the center pilot insert functional while drilling.

NC2032 : K20F grade, AlTiN coated, fully ground, honed cutting edge. For carbon steel & alloy steel C<0.3% and stainless steel.
NC40 : P35 grade, TiN coated, fully ground, honed cutting edge. For carbon steel & alloy steel C>0.3% and stainless steel.

Periphery insert N9GX... | Nine9 99307- 5xD-12xD Super Power Drill: Ø19mm ~ Ø40mm

Periphery Insert

Fully ground carbide insert
• Each insert has 4 cutting edges.
• Patented Dual-relief angle insert are designed for optimum chip breaking and good edge preparation for longer tool life.

NC2032: K20F grade, AlTiN coated, honed cutting edge for carbon steel, alloy steel, casting iron, stainless steel and hardened steel up to HRC 50.
NC40 : P35 grade, tougher insert with special chip breaker, TiN coated, for low carbon steel and stainless steel. Only available for insert N9GX06020431 and N9GX09030831.