Product specification

Stub drill HSS, DIN 1897 RN, 7,8 mm

Code: 012000078
Supplier code: A820780V000S
Category: Tools for hole-machining » 1 » Stub Drills HSS » 2905
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Ø D7,80 mm
L79 mm
l37 mm
Weight0,0211 kg
Helix Angleλ = 25°÷30°
Point angleε = 118°
MaterialHSS - high-speed steel
Manufacturing ModeV - ground from solid
Usage
Efficient drills are recommended for usual drilling on automatic and turrer lathes of parts made of unalloyed steel or alloyed steel, cast steel up to 900 N/mm2 , grey-, malleable- or nodular cast iron, sintered steel, Al-alloys with discontinuous chip, bronze, tough brass etc. There are especially suitable for drilling of thin-walled materials.
Surface Treatmentwithout treatment
Grinding Mode
C - conical lip relief, split point - form C
NotePROFI tools

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