Humm Ball ball end mill.
It has an optimized “S”-shaped cutting edge, which allows for very gentle and smooth operation. Sintered carbide and a polished cutting edge improve machining properties and directly extend its durability. The Humm Ball line cutters are perfect for profile machining and for materials with a hardness of up to 68 HRC.
 |  |
| R | Dc | Ds | D3 | L1 |
| 2 | 4 | 6 | 3.9 | 4 |
| L2 | L | Z | Type | Product No |
| 8 | 57 | 2 | 1 | 600.040.00 |
 | Roughing | Radius R (mm) | 2 |
| 30-44 HRC | spindle revolutions (min) | 12 000 | |
| feed (mm/min) | 1 460 | ||
| To 68 HRC | spindle revolutions (min) | 6 400 | |
| feed (mm/min) | 600 |
 | Roughing | Radius R (mm) | 2 |
| 30-44 HRC | spindle revolutions (min) | 13 000 | |
| feed (mm/min) | 2 210 | ||
| To 68 HRC | spindle revolutions (min) | 9 600 | |
| feed (mm/min) | 1 440 |