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Recommended insert grades f (mm/rev)
| ( Vc: m/min) | PM | PH | ||||
| Workpiece material | MEGACOAT | |||||
| MEGACOAT | Edge width CW (mm) | |||||
| NANO |
| PR1535 | PR1225 | PR1215 | 2 ~ 4 | 2 3 ~ 4 | ||||
| Carbon steel | ✩ | ★ | ✩ | |||||
| 80 ~ 200 | 80 ~ 200 | 100 ~ 200 | ||||||
| 0.08 ~ 0.18 | 0.10 ~ 0.25 | 0.15 ~ 0.28 | ||||||
| Alloy steel | ✩ | ★ | ✩ | |||||
| 70 ~ 180 | 70 ~ 180 | 80 ~ 180 | ||||||
| Stainless steel | ★ | ✩ | ✩ | 0.06 ~ 0.12 | 0.05 ~ 0.12 | 0.08 ~ 0.15 | ||
| 60 ~ 150 | 60 ~ 150 | 60 ~ 150 | ||||||
| Cast iron | - | - | ★ | 0.08 ~ 0.18 | 0.10 ~ 0.25 | 0.15 ~ 0.28 | ||
| 100 ~ 200 | ||||||||
| ★: 1st Recommendation ✩: 2nd Recommendation | ||||||||
| HH | ||||||||
| Example of feed | [ In the graph indicates the most recommended value of feed (f)] | |||||||
| ࣭PM chipbreaker | [ Workpiece material: S50C ][ Workpiece material: S50C ] | |||||||
| 2~4 |
| 0.1 | 0.2 | 0.3 | |
| Feed rate f (mm/rev) | |||
| ࣭PH chipbreaker | [ Workpiece material: S50C ][ Workpiece material: S50C ] | ||
| 3~4 | |||
| 2 | |||
| 0.1 | 0.2 | 0.3 |
Feed rate f (mm/rev)
1. Be sure to perform wet processing. Apply enough coolant to the cutting edge. 2. Keep a constant rate during processing so that optimum product life will be achieved. 3. Cut-off as close to the chuck as possible. 4. Lower the feed rate to 1/2 to 1/3 at the near center to prevent impact caused by machining.