Parallel shank twist drills, extra long series, type N, code VN70010, diameter 12 mm
| D | l1 | l2 | Item code | On stock |
|---|---|---|---|---|
| 12 | 375 | 260 | VN70010.1200 | No |
Cutting conditions
Material |
Strength |
Vc |
fz(mm/r) Ø1 |
Ø2 |
Ø3,15 |
Ø4 |
Ø5 |
Ø6,3 |
Ø8 |
Ø10 |
Ø12,5 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| P.1 | Free-cutting steels, general construction steels | ≤ 600 N/mm² | 20 | 0,016 | 0,05 | 0,08 | 0,1 | 0,1 | 0,125 | 0,16 | 0,2 | 0,2 |
| P.2 | General construction steels, steel castings | ≤ 850 N/mm² | 20 | 0,014 | 0,04 | 0,063 | 0,08 | 0,08 | 0,1 | 0,125 | 0,16 | 0,16 |
| P.3 | Tool steels low alloyed | ≤ 1100 N/mm² | 25 | 0,014 | 0,04 | 0,063 | 0,08 | 0,08 | 0,1 | 0,125 | 0,16 | 0,16 |
| K.1 | Cast iron (≤ 240 HB) | ≤ 820 N/mm² | 22 | 0,016 | 0,05 | 0,08 | 0,1 | 0,1 | 0,125 | 0,16 | 0,2 | 0,2 |
| N.2 | Aluminium cast alloys Si (Si ≤ 12%) | ≤ 600 N/mm² | 45 | 0,018 | 0,063 | 0,1 | 0,125 | 0,125 | 0,16 | 0,2 | 0,25 | 0,25 |
| N.3 | Aluminium cast alloys Si (Si > 12%) | ≤ 600 N/mm² | 36 | 0,016 | 0,05 | 0,08 | 0,1 | 0,1 | 0,125 | 0,16 | 0,2 | 0,2 |
| N.4 | Cooper-zinc alloys, cooper-tin alloys | ≤ 800 N/mm² | 22 | 0,012 | 0,032 | 0,05 | 0,063 | 0,063 | 0,08 | 0,1 | 0,125 | 0,125 |
Product attributes
Normal profile of flute, normal core, point angle 118°. Drills made of HSS Co mildly strenghtened core, point angle 130°.
Conical lip relief, split point, DIN 1412 form A
Drilling depth 20xD
High speed steel of average performance, it is applicable especially for cutters of smaller diameters and for milling of materials up to the strength of 900 MPa.