NACHI-FUJIKOSHI CORP.

• NACHI Tool Solutions

Drill shape ideal for deep hole drilling

High-regidity parabolic shape ideal for deep hole drilling. Optimum web diameter balances chip removal characteristics with tool rigidity.

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 Drill dia : 5mm Speed : 78.5m/min (5,000min-1) Feed : 0.12mm/min (600mm/min) Depth : 105mm Mist discharge volume : 0.85cc/h Competitor product Drill dia : 5mm Speed : 100m/min (6,400min-1) Feed : 0.08mm/min (510mm/min) Depth : 105mm Mist discharge volume : 0.26cc/h