| Ø D | 3,90 mm |
| L | 55 mm |
| l | 22 mm |
| Weight | 0,0048 kg |
| Helix Angle | λ = 35°÷40° |
| Point angle | ε = 118° |
| Material | HSSCo – high-speed steel |
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 modular cast iron, sintered steel, Al-alloys with discontinuous chip, bronze, tough brass etc. There are especially suitable for drilling of thin-walled materials. |
| Manufacturing Mode | V – ground from solid |
| Surface Treatment | without treatment |
Grinding Mode
Form C – conical lip relief, split point - form C |
| Note | PROFI tools |
Attachment:
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