Description
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.

Product Data
Product type: Solid carbide high-performance drill, plain shank
Tool material: Solid carbide
Shank: DIN 6535 HA
Drilling depth: 12xD
Tolerance: h7
Number of cutting edges: 2
Point angle: 135deg
Coating: TiAlN
Internal coolant supply: 25 bar
Nominal Dia. Dc: 17 mm
L2: 208.5 mm
L: 285 mm
Dia. Ds: 18 mm
Feed (f), Steel <900 N: 0.25 mm/rev

Cutting Data
Alu plastics: 250
Alu: 200
Alu cast >10% Si: 160
Steel <500 N: 125
Steel <750 N: 115
Steel <900 N: 95
Steel <1100 N: 90
Steel <1400 N: 65
INOX <900 N: 35
INOX >900 N: 30
GG(G): 100
GGG: 65

Note
Flute length Lc = L2 + 1.5 x Dc.
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.
For process reliability when using the 12xD drill, an initial centre drilling with NC spotting drills No. 121068-121130 or HOLEX Pro Steel No. 122501 is necessary.