HAM 292 Solid carbide twist drill with interior coolant supply, to 7xD
extra long type, TIN, TIALN-coated, with interior collant and steel shank, cylindrical shank with clamping fixture DIN 6535 HEK, right hand cut
design features: point grind: special point, CNC-grinding point angle: 140° side rake angle: 30° web thickness: reinforced profile: special chip flute geometry
cutting material grade & applications:
multi purpose grade K10 ultra micro
grain 10-12% Co
High performance spiral twist drill for
highest bore hole quality and economical
out-put. For drilling of cast iron, malleable
cast iron, steel castings, Cr-Ni-steels,
heatresisting steel, non-ferrous metals.
Specially suited for NC-drilling with great
feeds per rev.
Advise for very long drilling tools:
1.) For spot drilling it is recommended to reduce the feed rate to 25-50% of the machining feed rate.
2.) A pilot drilling is recommended in special cases. (same boring depth diameter, approx. 1 x D)