Version:
Straight major cutting edges and a special flute profile ensure good chip evacuation. The robust cutter geometry ensures high-performance drilling with good process reliability. A wide range of applications in steel materials thanks to a combination of tough ultra-fine grain carbide and extremely wear-resistant coating.
Note:
Flute length L
C = L
2 + 1.5 × D
C.
For process reliability when using the 12×D drill, an initial centre drilling with NC spotting drills No.
121068 -
121130 or HOLEX Pro Steel No.
122501 is necessary.
HB and HE shanks are available at the same price as HA.
For
HB shanks: use order
no. 123304.
For
HE shanks: use order
no. 123309.