Forum Twist Drill DIN 1869TF HSS 8,0 x 390 mm

Oversize twist drill cylindrical shank, DIN 1869, type TF, HSS, blank, FORUM

- DIN 1869
- HSS
- Profile ground
- Type TF
- Spiral angle 38°
- Point angle 130°
- Side chip angle larger than normal
- Core thickness considerably thicker than normal
- Without core rise
- Shank (DIN) cylindrical


Advantage: Special drill for drilling extremely deep holes, with poor chip evacuation and poor cooling. For holes up to 10 x D.
Exception: CrNi steels as well as VA steels and similar materials.