COUNTERSINK 90°, HSS-XE 3-FLAT-SHANK / KARNASCH Germany

KarnaschSKU: 201740210

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Description

Made by KARNASCH/GERMANY


Suitable for: Steel<130Ksi, Stainless Steel<130Ksi, Grey Cast Iron, Aluminum>10% Si, Copper, Brass, Tin, Plastic GRP/CRP;
The flutes of Karnasch High-Performance countersinks are always CBN ground.
This guarantees: Excellent chip clearance / chatter-free working / scratch-free surface / best centering.
Made of high-alloyed special steel for considerably longer service life than HSS-Steel.
60° Countersinks are particularly suitable for countersinking in threaded core holes and countersinking in the tool making/jig making industry.


Areas of application of countersinks:

  • High-alloyed Chromium Steel such as Stainless (V2A)
  • Steel
  • Cast iron
  • Non-ferrous metal

KARNASCH Countersinks characteristics:


3 SURFACE SHANK

  • 3 surface shank results in:
    • Excellent torque transmission
    • No slipping in the chuck
    • Significantly higher cutting performance  
* CAUTION: In preparation. Not yet available for all articles. If absolutely necessary, please ask in advance if already available.
  • RAPID-CUT countersink Art. 20 1760 / 20 1765 already complete with 3 surface shank. Carbide countersinks  Art. 20 1755 are supplied with cylindrical shank. These countersinks are mainly used in HIGH-TECH machining on CNC machines with shrink chucks. Only the cylindrical shank is suitable for this purpose.

countersink diagram 2

DIAMETER RELIEF ANGLE

  • Every diameter is given a clearance angle at its circumference.

Result: The largest cutting diameter is thus always the highest point.

3 countersink

AXIAL CBN RELIEF GRINDING

Result: Clear cut with low heat generation.

CBN RELIEF GRINDING

CBN RELIEF GRINDING

Radially adapted CBN relief grinding according to the diameter.

Result: The cutting edge is always the highest point in the diameter.

karnasch countersink

CBN DEEP-GROUND FLUTES

CBN deep-ground flutes result in considerably higher burr clearance and sharpness compared to milled flutes. This results in significantly higher cutting performance and tool life.

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