Special flue design on drill will increase the space for chip removal. Unique edge treatment can ensure the high feed and efficiency.
Special flue design on drill will increase the space for chip removal. Unique edge treatment can ensure the high feed and efficiency.
Worpiece Material | Cutting speed (m/min) | FN (mm/rev) | |||||
External cooling | Internal cooling | φ12 | φ14 | φ16 | φ18 | φ20 | |
Mild steel, long chip (<125HB) | 120-80-50 | 140-100-60 | 0.18-0.28-0.40 | 0.22-0.32-0.45 | 0.22-0.32-0.45 | 0.25-0.38-0.50 | 0.25-0.38-0.50 |
Mild steel, short chip, free cutting steel(<25HRC) | 120-75-50 | 140-100-60 | 0.18-0.28-0.40 | 0.22-0.32-0.45 | 0.22-0.32-0.45 | 0.25-0.38-0.50 | 0.25-0.38-0.50 |
High and medium carbon steel (<35HRC) | 120-70-45 | 120-80-60 | 0.18-0.28-0.38 | 0.22-0.32-0.45 | 0.22-0.32-0.45 | 0.25-0.38-0.50 | 0.25-0.38-0.50 |
Alloy steel, tool steel (<35-48HRC) | 100-70-45 | 110-50-60 | 0.15-0.23-0.34 | 0.18-0.25-0.38 | 0.18-0.25-0.38 | 0.25-0.38-0.50 | 0.20-0.30-0.40 |
Alloy steel, tool steel (<35-48HRC) | 80-60-35 | 90-60-35 | 0.11-0.19-0.30 | 0.12-0.22-0.32 | 0.12-0.22-0.32 | 0.20-0.30-0.40 | 0.14-0.24-0.34 |
PH, ferrite and martensite steel (<35HRC) | 70-50-30 | 90-60-30 | 0.10-0.18-0.28 | 0.12-0.20-0.30 | 0.12-0.20-0.30 | 0.14-0.24-0.32 | 0.14-0.24-0.32 |
High strength PH, ferrite and martensite steel(35-48HRC) | 70-45-25 | 80-50-30 | 0.10-0.18-0.28 | 0.12-0.20-0.30 | 0.12-0.20-0.30 | 0.14-0.24-0.32 | 0.14-0.24-0.32 |
Grey cast iron (<32HRC) | 140-100-60 | 160-120-60 | 0.25-0.33-0.45 | 0.28-0.36-0.48 | 0.30-0.40-0.50 | 0.32-0.42-0.52 | 0.35-0.45-0.55 |
Alloy cast iron, nodular cast iron (<28HRC) | 120-80-60 | 140-100-60 | 0.22-0.30-0.42 | 0.24-0.33-0.45 | 0.25-0.35-0.48 | 0.28-0.38-0.48 | 0.30-0.40-0.50 |
Difficult cutting alloy cast iron, nodular cast iron (<45HRC) | 100-70-50 | 100-80-50 | 0.16-0.22-0.28 | 0.18-0.24-0.30 | 0.20-0.26-0.32 | 0.22-0.28-0.34 | 0.23-0.28-0.35 |
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