Extra long ground twist drills recommended for drilling deep holes through drill bushes in components made of non-alloy and alloy steel, cast steel up to a strength of 900 N/mm2, gray, malleable and ductile iron, sintered steel, etc.
VAT: | 21% |
Unit: | pcs. |
Code: | 1869/2RNHSS1330 |
EAN: | 8592667055407 |
Značka: | NÁSTROJE CZ |
Your price | 4 168,00 Kč |
Your price without VAT | 3 444,63 Kč |
Extra long ground twist drills recommended for drilling deep holes through drill bushes.
It is necessary to prevent from flute-blocking by frequent withdrawing the drill bit from the drilled hole. It is necessary to modify the recommended cutting conditions regarding the insufficient supply of the cutting fluid.
Helix type N, helix angle 25-30°, point angle 118°, split point.
Materials suitable for drilling: