6 Piece Set, HSS-XE BLUE-TEC coated Countersinks, 90 Degree, Rapid Cut

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

CONTENT:

6 HSS-XE Countersink DIN 335 Type C 90Degrees, 3-Flat-Shank 201765:
1 pc each Diameter: 6,3 - 8,3 - 10,4 - 12,4 - 16,5 - 20,5 mm

HSS-XE STEEL + BLUE-TEC COATED:

Made Of High-Alloyed Special Steel Xe“ For Considerably Longer Service Life Than Hss-Steel.
BLUE-TEC Coating For A Further Substantial Increase In Service Life Also When Machining Dry (No/Little Cooling)

RAPID-CUT specially developed for automatic and quick feed. Optimized
cutting geometry + 3 flat sections of the shank leads to:

up to 30% faster sinking than conventional countersinks

up to 40% higher service life

3-Flat shank for:
– Excellent torque transmission
– No slippage in the drill chuck
– This results to superior cutting output

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.