HSS-XE + BLUE-TEC coated Countersink DIN 335 Type C 90°, 3-Flat-Shank, long shank

Art. 20.1770
Product details:

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

Properties:
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
* NOTE: In conversion.
Not yet available for all countersinks. If absolutely needed, please ask in advance if already avialable.
- 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.

Usage:

 

Art Nr. d1 d3 l1 d2 z AF BF €*
201770010 6,3 1,5 85,0 5,0 3 - M 3 23,55
201770020 8,3 2,0 85,0 6,0 3 - M 4 24,36
201770030 10,4 2,5 88,0 6,0 3 - M 5 26,80
201770040 12,4 2,8 108,0 8,0 3 - M 6 29,87
201770050 15,0 3,2 110,0 10,0 3 M 8 - 35,55
201770060 16,5 3,2 112,0 10,0 3 - M 8 35,55
201770070 20,5 3,5 115,0 10,0 3 - M 10 41,12
201770080 25,0 3,8 118,0 10,0 3 - M 12 51,39
*Price incl. 16 % VAT

0.24770800 1603258351