REF: 682201765110

The slots of Karnasch high-performance countersinks are always ground. This guarantees excellent chip removal, vibration-free working, a scratch-free surface and better centering. Hss-xe steel + special high alloy xe steel blue-tec coating for considerably longer life.

The slots of Karnasch High-Performance countersinks are always ground with CBN. This guarantees: Excellent chip evacuation / vibration-free work / scratch-free surface / better centering.

HSS-XE steel + coating  BLUE-TEC

Made of special high alloy steel XE“ for considerably longer life than HSS steel.
BLUE-TEC coating for a substantial increase in tool life also in dry machining (no/little cooling)

RAPID-CUT specially developed for automatic and fast feeding. Optimized cutting geometry
+ 3 flat handle sections lead to :

Sinking up to 30% faster than conventional countersinks.

up to 40% longer useful life

Triple flat shank for:
– Excellent torque transmission
– No slipping in the chuck
– This results in superior cutting performance

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

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

Deep grinding CBN flutes lead (unlike milled flutes) to significantly smoother and sharper cutting edges. This result is: Increased cutting performance and tool life.

The axial relief produced by grinding CBN produces a smooth cut with little heat.