| Ø D | 7,938 mm |
| ØD | 5/16 inch. |
| L | 117 mm |
| l | 75 mm |
| Weight | 0,030 kg |
| Helix Angle | λ = 25°÷30° |
| Point angle | ε = 118° |
| Material | HSS – high-speed steel |
| Manufacturing Mode | T – rollforged or extruded |
Usage
Efficient drills are recommended for drilling 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. |
Surface Treatment
black oxide coated or steam tempered, so-called two-coloured execution |
| Grinding Mode | Form N - conical lip relief |
| Note | STANDARD tools |
Attachment:
221135 - katalogový list
Řezné podmínky
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