Special drill with reinforced shank, high concentricity and precision ground point.
Recommendation:
Maximum drilling depth:
L2 = LC - 1.5 × DC.
Through-coolant: no
Shank: Plain shank with h8
Number of cutting edges Z: 2
Number of drills: 10
Flute length Lc: 1 mm
Overall length L: 25 mm
Shank ? Ds: 1 mm
Feed f in steel < 900 N/mm2: 0.006 mm/rev.