5 Piece Set, ASP-Powdersteel BLUE-TEC coated Countersinks, 90 Degree
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The flutes of Karnasch High-Performance countersinkers are always CBN ground. This guarantees: Excellent chip clearance / chatter-free working / scratch-free surface / best centering.
5 HSS-XE Countersink DIN 335 Type C 90Degrees, 3-Flat-Shank 201750:
1 pc each Diameter: 6,3 - 10,4 - 16,5 - 20,5 - 25 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)
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.
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