Shell end mills, semicoarse teeth, type NR
|
D
js 16 |
d
H 7 | l1 | Z | Item code | On stock |
|---|---|---|---|---|---|
| 40 | 16 | 32 | 6 | 624278V.040 | Yes |
| 50 | 22 | 36 | 6 | 624278V.050 | Yes |
| 63 | 27 | 40 | 8 | 624278V.063 | Yes |
| 80 | 27 | 45 | 8 | 624278V.080 | Yes |
| 100 | 32 | 50 | 10 | 624278V.100 | Yes |
| 125 | 40 | 56 | 12 | 624278V.125 | Yes |
| 160 | 50 | 63 | 14 | 624278V.160 | No |
Cutting conditions
Material |
Strength |
Ap |
Ae |
Vc |
fz(mm/z) Ø 40 |
Ø 50 |
Ø 63 |
Ø 80 |
Ø 100 |
Ø 125 |
Ø 160 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| P.1 | Free-cutting steels, general construction steels | ≤ 600 N/mm² | 0,8xl1 | 0,75xD | 45 | 0.096 | 0.102 | 0.12 | 0.132 | 0.138 | 0.14 | 0.144 |
| P.2 | General construction steels, steel castings | ≤ 850 N/mm² | 0,8xl1 | 0,75xD | 39 | 0.096 | 0.102 | 0.12 | 0.132 | 0.138 | 0.14 | 0.144 |
| P.4 | Heat treatable steels | ≤ 900 N/mm² | 0,8xl1 | 0,75xD | 30 | 0.096 | 0.102 | 0.12 | 0.132 | 0.138 | 0.14 | 0.144 |
| M.2 | Corrosion- and acid-proof steels | 750 - 850 N/mm² | 0,8xl1 | 0,75xD | 15 | 0.096 | 0.102 | 0.12 | 0.132 | 0.138 | 0.14 | 0.144 |
| K.2 | Cast iron (> 240 HB) | > 800 N/mm² | 0,8xl1 | 0,75xD | 25 | 0.096 | 0.102 | 0.12 | 0.132 | 0.138 | 0.14 | 0.144 |
| S.1 | Chrome-nickel alloys | ≤ 1500 N/mm² | 0,8xl1 | 0,75xD | 12 | 0.067 | 0.071 | 0.084 | 0.092 | 0.097 | 0.098 | 0.101 |
Calculations of cutting conditions
Product attributes
Straight bore with standard keyway and driving slot according to DIN 138.
Helix angle = 30°.
Rake angle = 12°.
Extra high performance high speed steel with good toughness and great temperature resistance. It is applicable especially for milling of materials with high strength, austenitic steels, steels for warm working, etc.
For roughing operation and materials of lower and medium strength (up to 700 MPa), surface roughness Ra 12,5 and more.
