Poranterä 6.50x235x350mm HSSCo5 EXTRA-Long Serie 3 DIN 1869 ( ZV 3001/ T1000 ) STIMZET

High-efficient long drills with the higher thermal stress resistance, special slute profile by keeping the drill rigidity, are recommended for deep-hole drilling by means of jig bushes of parts made of hard-to-machine materials, alloyed steel and cast steel, especially for drilling of cold- or hot-work tool steel, crankshafts, heat-treatable or carburizing steel, stainless steel.

λ=35°÷40° ε=128°