
Cutting Speed — vc Recommended Feed Rate (f) by Diameter Range — m/min Material Tool Diameter
| Group | min | – | min | (mm) | 3,0 | 4,0 | 6,0 | 8,0 | 10,0 | 12,0 | 16,0 | 20,0 | ||||
| 21 | 100 | – | 450 | mm/r | 0,16–0,25 0,19–0,29 0,23–0,35 0,27–0,42 0,31–0,50 0,36–0,57 0,44–0,69 0,52–0,82 | |||||||||||
| N | 22, 23, 24 | 100 | – | 300 | mm/r | 0,15–0,23 0,17–0,28 0,21–0,34 0,25–0,39 0,30–0,46 0,34–0,54 0,42–0,67 0,52–0,82 | ||||||||||
| 26 | 100 | – | 250 | mm/r | 0,16–0,28 0,15–0,32 0,19–0,36 0,23–0,40 0,25–0,44 0,28–0,48 0,32–0,56 0,35–0,63 |
Metric tolerance
nominal size range D1 tolerance m7 D tolerance h6
| >3–6 | 0,004/0,016 | 0,000/-0,008 |
| >6–10 | 0,006/0,021 | 0,000/-0,009 |
| >10–18 | 0,007/0,025 | 0,000/-0,011 |
| >18–25,4 | 0,008/0,029 | 0,000/-0,013 |