Solid Carbide, Blue-Tec Coated Countersink, DIN 335, Type C, 90 Degrees

The flutes of Karnasch High-Performance countersinkers are always CBN ground. This guarantees: Excellent chip clearance / chatter-free working / scratch-free surface / best centering.

Tungsten Carbide + BLUE-TEC coated:

Made of tungsten carbide for maximum tool life, even in most difficult materials. BLUE-TEC coating for a further substantial increase in service life also when machining dry (no/little cooling).

Diameter 4,3-11,5 mm solid carbide
Diameter 12,4-31 mm brazed shank

Each diameter receives its own relief angle. Result: The cutting edge is also always the highest point.

According to the diameter radially-adjusted CBN ground relief. Result: The cutting edge is always the highest point of the diameter.

Axial relief produces by CBN grinding leads to a smooth and low-heat cut.

CBN deep-ground flutes leads (unlike miled grooves) to significantly smoother and sharper cutting edges. This result is: Higher cutting performance and tool life.