| 30-1881 | 30-1891 | HAM 270 | HAM 271 |
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| HAM 30-1881 (Nirodrill) solid carbide spiral drill 3 X D |
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Engineering data
• special chip flute geometry • special point ground for machining of stainless steel • 30° RH helix |
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| Material |  |
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| 30-1881 | ||||||||||||
| very suitable | limited suitable | |||||||||||
 cutting materialsolid carbide ultra micro grain |
 number of teeth - 2 |
 helix angle30° right hand fluted |
 Standard DIN 6537K |
 3 x Diameter |
 HAM Standard |
 Point angle 140° |
 Shank HA with IC |
 Special-polishing process |
 Interior Coolant |
 High Performance Cutting |
 Shrink Fit |
 Shank HB with IC |
 Shank HE with IC |
| Ø d1 (m7) mm |
l3 mm |
l2 mm |
l1 mm |
Ø d2 (h6) mm |
Ø d1 (m7) mm |
l3 mm |
l2 mm |
l1 mm |
Ø d2 (h6) mm |
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| 3 | 14 | 20 | 62 | 6 | 7 | 24 | 34 | 79 | 8 | |
| 3.2 | 14 | 20 | 62 | 6 | 7.5 | 29 | 41 | 79 | 8 | |
| 3.3 | 14 | 20 | 62 | 6 | 7.8 | 29 | 41 | 79 | 8 | |
| 3.5 | 14 | 20 | 62 | 6 | ||||||
| 3.8 | 17 | 24 | 66 | 6 | 8 | 29 | 41 | 79 | 8 | |
| 8.5 | 35 | 47 | 89 | 10 | ||||||
| 4 | 17 | 24 | 66 | 6 | 8.8 | 35 | 47 | 89 | 10 | |
| 4.2 | 17 | 24 | 66 | 6 | ||||||
| 4.5 | 17 | 24 | 66 | 6 | 9 | 35 | 47 | 89 | 10 | |
| 4.8 | 20 | 28 | 66 | 6 | 9.8 | 35 | 47 | 89 | 10 | |
| 5 | 20 | 28 | 66 | 6 | 10 | 35 | 47 | 89 | 10 | |
| 5.5 | 20 | 28 | 66 | 6 | 10.2 | 40 | 55 | 102 | 12 | |
| 5.8 | 20 | 28 | 66 | 6 | 10.8 | 40 | 55 | 102 | 12 | |
| 6 | 20 | 28 | 66 | 6 | 11.8 | 40 | 55 | 102 | 12 | |
| 6.5 | 24 | 34 | 79 | 8 | 12 | 40 | 55 | 102 | 12 | |
| 6.8 | 24 | 34 | 79 | 8 | 14 | 43 | 60 | 107 | 14 |
We reserve the right to make technical changes. 