Product specification

Extra long straight shank drill HSS, ZV 3001, ZV 3001, 6,75X225/155

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Ø D6,75 mm
L225 mm
l155 mm
Helix Angleλ = 27°÷32°
Point angleε = 118°
MaterialHSS - high-speed steel
Manufacturing ModeV - ground from solid
Usage
Extra long drills are recommended for deep-hole drilling by means of jig bushes of parts made of unalloyed or alloyed steel, cast steel up to 900 N/mm2, grey-, malleable- or nodular cast iron, sintered steel etc. It is necessary to prevent from flute-stopping by frequent withdrawing the drill. It is necessary to reduce the recommended cutting conditions regarding to the insufficient supply of the cutting fluid.
Surface Treatmentwithout treatment
Grinding Mode
C - conical lip relief, split point - form C
NotePROFI tools

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