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

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.

DIAMETER RELIEF ANGLE

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

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

AXIAL CBN RELIEF GRINDING

Result: Clear cut with low heat generation.

CBN RELIEF GRINDING

Radially adapted CBN relief grinding according to the diameter.

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

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.