End mills extra short, type NR, 30°, Weldon shank
|
D
k 12 |
d
h 6 | l1 | l2 | Z | Item code | On stock |
|---|---|---|---|---|---|---|
| 30 | 20 | 90 | 30 | 6 | 124218K.300030 | Yes |
| 35 | 20 | 90 | 30 | 6 | 124218K.350030 | Yes |
| 40 | 25 | 95 | 32 | 8 | 124218K.400032 | Yes |
| 50 | 32 | 100 | 36 | 8 | 124218K.500036 | Yes |
Cutting conditions
Material |
Strength |
Ap |
Ae |
Vc |
fz(mm/z) Ø 30 |
Ø 35 |
Ø 40 |
Ø 50 |
|---|---|---|---|---|---|---|---|---|
| P.1 | Free-cutting steels, general construction steels | ≤ 600 N/mm² | 1,5xD | 0,5xD | 45 | 0.115 | 0.13 | 0.14 | 0.18 |
| P.2 | General construction steels, steel castings | ≤ 850 N/mm² | 1,5xD | 0,5xD | 39 | 0.115 | 0.13 | 0.14 | 0.18 |
| P.3 | Tool steels low alloyed | ≤ 1100 N/mm² | 1,5xD | 0,5xD | 24 | 0.115 | 0.13 | 0.14 | 0.18 |
| P.4 | Heat treatable steels | ≤ 900 N/mm² | 1,5xD | 0,5xD | 30 | 0.115 | 0.13 | 0.14 | 0.18 |
| M.2 | Corrosion- and acid-proof steels | 750 - 850 N/mm² | 1,5xD | 0,5xD | 15 | 0.115 | 0.13 | 0.14 | 0.18 |
| N.4 | Cooper-zinc alloys, cooper-tin alloys | ≤ 850 N/mm² | 1,5xD | 0,5xD | 80-120 | 0.115 | 0.13 | 0.14 | 0.18 |
Calculations of cutting conditions
Product attributes
Straight shank with clamping flat (Weldon) according to DIN 1835 B.
For roughing operation and materials of lower and medium strength (up to 700 MPa), surface roughness Ra 12,5 and more.
Feed direction possibility
Company norm
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.