Description
Version:
High concentricity.
Large section parabolic flutes; strong due to strengthened core thickness (without core taper).
? 16 mm ?: Bright finish flutes, nitrided lands; > 16 mm ?: Specially treated surface.
Special sturdy drills for extremely deep holes. Up to approx. 15×? without drill withdrawal.
With point geometry shape A.
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 1870 R2
Tolerance nominal ?: h8
Point angle: 130 degrees
Shank: Morse taper
Number of cutting edges Z: 2
recommended maximum drilling depth L2: 219.3 mm
Flute length Lc: 235 mm
Overall length L: 360 mm
Morse taper MT size: 1
Feed f in steel < 750 N/mm2: 0.1 mm/rev.
High concentricity.
Large section parabolic flutes; strong due to strengthened core thickness (without core taper).
? 16 mm ?: Bright finish flutes, nitrided lands; > 16 mm ?: Specially treated surface.
Special sturdy drills for extremely deep holes. Up to approx. 15×? without drill withdrawal.
With point geometry shape A.
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 1870 R2
Tolerance nominal ?: h8
Point angle: 130 degrees
Shank: Morse taper
Number of cutting edges Z: 2
recommended maximum drilling depth L2: 219.3 mm
Flute length Lc: 235 mm
Overall length L: 360 mm
Morse taper MT size: 1
Feed f in steel < 750 N/mm2: 0.1 mm/rev.
