Non-step drilling to a depth 20 times the drill diameter is possible and the drilling efficiency is also improved five times
- MQL drills can be operated at five or more fimes the efficiency of conventional HSS drills used for deep hole drilling, revolutionizing the deep hole drilling of typical items such as crankshafts.
Enhanced tool life through stable performance
- Stable drilling achieved through double margin, tip coating, and unique drill shape that balances rigidity and chip removal performance.
Drill shape ideal for deep hole drilling
|
 |
 |
|
- Improved drilling straightness and stability through the use of a double margin.
| Conventional single margin | MQL Power Long Drill Double margin |
 |
 |
Non-step drilling efficiency
Conventional drilling process |
MQL drilling process
HSS long drills
| Drill dia | : 5mm |
| Speed | : 20m/min |
| Feed | : 150mm/min |
MQL Power Long Drills
| Drill dia | : 5mm |
| Speed | : 80m/min |
| Feed | : 750mm/min |
Flexible production system
- Improved drilling efficiency and compact machining support flexible multi-production.
 |
 MQL Power Cell DH524 (NACHI) |
Optimum coating
- TiAlN coating provides superior heat- and wear-resistance.
- Applying the coating only to the drill tip extends the tool life of regrinding tools.
Tip coating
Repeatedly regrinding and recoating the drills are possible to peel coating layer Number of regrinding and recoating operations is limited to a maximum of 4 or 5 Coating applied to the drill tip only |
Prevents application of multiple coating layers
Extends the tool life of regrinding tools
Double margin drills performance
Long life of MQL Power Long Drills
 |
 MQL Power Long Drills |
Drilling condition
| Drill dia | : 5 x 130 x 180 mm |
| Speed | : 80m/min (5,100min-1) |
| Feed | : 0.15mm/rev (764mm/min) |
| Depth | : 100mm |
| Material | : S50C(180HB) |
| Coolant | : MQL |
Comparison of chip shape
| Drilling condition | 615 holes drilled | ||
| Wear condition | Chip shape | ||
| NACHI product |
Drill dia : 5mm Speed : 78.5m/min (5,000min-1) Feed : 0.12mm/min (600mm/min) Depth : 105mm Mist discharge : 0.85cc/h |
 |
 |
| Competitor product |
Drill dia : 5mm Speed : 100m/min (6,400min-1) Feed : 0.08mm/min (510mm/min) Depth : 105mm Mist discharge : 0.26cc/h |
 |
 |
Wear comparison
|
NACHI drill
Competitor product
|
Non-step drilling of L/D = 20
|
Drilling condition |
| Drill dia | : 5mm |
| Speed | : 78.5m/min (5,000min-1) |
| Feed | : 0.12mm/rev (600mm/min) |
| Depth | : 105mm |
| Material | : S50C |
| Coolant | : semi-dri (3cc/h) |
 |
* Real Player is required for video playback. If you do not have a plug-in, download from here. * Internet Explorer 4 or Netscape4.5 or later is recommended for video playback. |
Catalog Download
