Ball end mill feom Humm Ball Q series.
It has 4 blades, so it can work in full material with higher processing parameters. The optimized “S”-shaped cutting edge enables very gentle and smooth operation, and the wide chip flute ensures excellent chip evacuation. Designed for machining hardened steel up to 72 HRC.
 |  |
| R | Dc | Ds | D3 | L1 |
| 3 | 6 | 6 | 5.7 | 9 |
| L2 | L | Z | Product No | |
| 18 | 80 | 4 | 604.060.00 | |
 | Roughing | Radius R (mm) | 3 |
| 30-44 HRC | spindle revolutions (min) | 8 000 | |
| feed (mm/min) | 1 250 | ||
| To 68 HRC | spindle revolutions (min) | 3 700 | |
| feed (mm/min) | 750 |
 | Roughing | Radius R (mm) | 3 |
| 30-44 HRC | spindle revolutions (min) | 11 100 | |
| feed (mm/min) | 3 230 | ||
| To 68 HRC | spindle revolutions (min) | 6 400 | |
| feed (mm/min) | 1 020 |