Compared to DIN 345 the flute length is longer by the drill bushing height. Thus the effective drilling depth is unaffected. Special surface treatment for improved chip evacuation.
With point geometry shape A.
Advantage:
For drilling through drill bushings in tool making, machine building and series production. Particularly important for drilling into uneven, inclined or arched surfaces.
Recommendation:
Maximum drilling depth:
L2 = LC - 1.5 × DC.
Note:
For suitable reducing adapters for tools with MT shanks see No. 343000-343530.
Through-coolant: no
Standard: DIN 341
Tolerance nominal ?: h8
Point angle: 118 degrees
Shank: Morse taper
Number of cutting edges Z: 2
recommended maximum drilling depth L2: 101 mm
Flute length Lc: 116 mm
Overall length L: 197 mm
Morse taper MT size: 1
Feed f in steel < 750 N/mm2: 0.1 mm/rev.