
ST series twist drills ST Spiralbohrer Serie ∙(Internal coolant / Interne Kühlung ) 3D 5D
| Workpiece material | Mild B | steel thl | Carbon ste Kohlens | el, alloy steel toff - stahl | Stai | nless steel | · Rostfreier Sta | hl | ||
| Werkstück- stoff | HB a | ≤180 sa | ~30 Leg. | HRC Stahl | Aus | tenite | Mart | ensite | F | errite |
| Vc | 80~15 | 0m/min | 80~15 | 0m/min | 40~8 | 0 m/min | 50~10 | 0 m/min | 60~12 | 0 m/min |
| Ø (mm) | n (min -1) | f (mm/r) | n (min -1) | f (mm/r) | n (min -1) | f (mm/r) | n (min -1) | f (mm/r) | n (min -1) | f (mm/r) |
| 3 | 12700 | 0.09~0.12 | 12700 | 0.09~0.12 | 6300 | 0.03~0.07 | 7400 | 0.03~0.07 | 9000 | 0.03~0.07 |
| 4 | 9600 | 0.10~0.15 | 9600 | 0.10~0.15 | 4700 | 0.04~0.08 | 5600 | 0.04~0.08 | 6700 | 0.04~0.08 |
| 5 | 7600 | 0.12~0.18 | 7600 | 0.12~0.18 | 3800 | 0.05~0.10 | 4500 | 0.05~0.10 | 5400 | 0.05~0.10 |
| 6 | 6400 | 0.14~0.20 | 6400 | 0.14~0.20 | 3200 | 0.06~0.12 | 3700 | 0.06~0.12 | 4500 | 0.06~0.12 |
| 8 | 4800 | 0.16~0.24 | 4800 | 0.16~0.24 | 2400 | 0.08~0.16 | 2800 | 0.08~0.16 | 3400 | 0.08~0.16 |
| 10 | 3800 | 0.18~0.27 | 3800 | 0.18~0.27 | 1900 | 0.10~0.18 | 2200 | 0.10~0.18 | 2700 | 0.10~0.18 |
| 12 | 3200 | 0.20~0.30 | 3200 | 0.20~0.30 | 1600 | 0.12~0.20 | 1900 | 0.12~0.20 | 2300 | 0.12~0.20 |
| 14 | 2700 | 0.22~0.35 | 2700 | 0.22~0.35 | 1350 | 0.13~0.22 | 1600 | 0.13~0.22 | 1900 | 0.13~0.22 |
| 16 | 2400 | 0.25~0.36 | 2400 | 0.25~0.36 | 1200 | 0.14~0.25 | 1400 | 0.14~0.25 | 1700 | 0.14~0.25 |
| 18 | 2100 | 0.28~0.38 | 2100 | 0.28~0.38 | 1050 | 0.15~0.28 | 1200 | 0.15~0.28 | 1500 | 0.15~0.28 |
| 20 | 1900 | 0.30~0.40 | 1900 | 0.30~0.40 | 950 | 0.16~0.30 | 1100 | 0.16~0.30 | 1350 | 0.16~0.30 |
18 2100 0.28~0.38 2100 0.28~0.38 1050 0.15~0.28 1200 0.15~0.28 1500 0.15~0.28 C
1. When the tool is used for the first time, please make a test cutting with 90% of cutting speed or 85% feed rate mentioned above. If the cutting conditions remain stable, gradually increase the cutting speed and feed rate. 2. The cutting conditions above are for drilling with emulsion. 3. Use a collet without any defect or dust. The radial run-out of drill must be under 0.02mm.
4. These conditions above are for cutting depth under 5D.
Bearbeitung die Schnittdaten entsprechend erhöhen. 2. Die obigen Schnittdatenempfehlungen basieren auf dem Einsatz von Emulsion. 3. Keine defekte Werkzeugaufnahme wählen. Die Rundlaufgenauigkeit muss unter 0,02mm liegen. 4. Die obigen Schnittdaten sind für Bohrungstiefen unter 5xD ausgelegt.