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HOLEX Pro Steel:
Straight major cutting edges and a special flute profile ensure good chip evacuation. The robust cutting edge 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.
Flute length LC = L2 + 1.5 × DC.
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.
Series HOLEX Pro Steel
Tool material Solid carbide
Drill depth up to 12×D
Point angle 135 degrees
Shank DIN 6535 HB
Through-coolant yes, with 25 bar
Machining strategy HPC
Colour ring green
Type of product Jobber drill