| ØD | 51/64 inch. |
| Ø D | 20,241 mm |
| L | 210 mm |
| l | 145 mm |
| Weight | 0,331 kg |
| Helix Angle | λ = 25°÷30° |
| Point angle | ε = 118° |
| Material | HSS - high-speed steel |
| Manufacturing Mode | T - rollforged or extruded |
Usage
Drills are recommended for usual drilling 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. |
Surface Treatment
black oxide coated or steam tempered, so-called two-coloured executin |
| Grinding Mode | N - conical lip relief |
| Note | STANDARD tools |
Attachment:
221135 - katalogový list
Řezné podmínky
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