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Description
Technical data of extra long drill fi 12 cobalt drill bit
| Technical data | |
|---|---|
| Working diameter of drill d | fi 12 mm |
| Total length l1 | 295 mm |
| Length of working part l2 | 205 mm |
Cutting parameters of extra long drill bit fi 12 mm HSSE NWKp
| ISO symbol | Material | Cutting speed Vc [m/min] | Feed per revolution f [mm] | Revolutions n [obr/min] | Total feed rate [mm/min] |
|---|---|---|---|---|---|
| P | Steel | 24 | 0,2 | 637 | 127 |
| M | Stainless steel | 8 | 0,12 | 212 | 25 |
| K | Cast iron | 22 | 0,25 | 584 | 146 |
| N | Aluminum and non-ferrous materials | 34 | 0,16 | 902 | 144 |
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Cutting parameters calculator
Extra long drill bit for metal 12 cobalt Inox
Extra-long twist drills with cylindrical shank for steel and cast iron for general use. The recommended use is for deep holes, or when greater tool overhang is required. Use in: carbon steel, auto steel, structural steel, gray iron, aluminum bronze, new silver Cu Zn Ni alloy, gray iron, tin-zinc bronze, electronic copper malleable brass. High-performance drilling; precision, heavy-duty drilling.
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