6 Piece Set, HSS-XE BLUE-TEC coated Countersinks, 82 Degree
The flutes of Karnasch High-Performance countersinkers are always CBN ground. This guarantees: Excellent chip clearance / chatter-free working / scratch-free surface / best centering.
6 HSS-XE Countersink DIN 335 Type C 82Degrees, 3-Flat-Shank 201745:
1 pc each Diameter: 1/4"- 5/16" - 3/8" - 1/2" - 5/8" - 3/4"
HSS-XE steel and 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)
3-Flat shank for:
– Excellent torque transmission
– No slippage in the drill chuck
– This results to superior cutting output
According to the diameter radially-adjusted CBN ground relief. Result: The cutting edge is always the highest point of the diameter
Each diameter receives its own relief angle. Result: The cutting edge is also always the highest point.
CBN deep-ground flutes leads (unlike miled grooves) to significantly smoother and sharper cutting edges. This result is: Higher cutting performance and tool life.
Axial relief produces by CBN grinding leads to a smooth and low-heat cut.
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