NACHI-FUJIKOSHI CORP.

• NACHI Tool Solutions

Drill shape

Thin web

Wide flute space

Thinning shape and special cutting edge design

• Thin web and wide flute space ensure stable drilling.
• The thinning shape is restored easily in re-sharpening.
• Special cutting edge design protects damageable corner section.

Tool life comparison : FC250 Dry drilling

Drilling condition Drill : 6mm Speed : 100m/min (5,300min-1) Feed : 0.2mm/rev (1,060mm/min) Depth : 20mm through hole Material : FC250 Coolant : Air blow

Tool life comparison : FCD450

Drilling condition Drill : 6.0mm Speed : 100m/min (5,300min-1) Feed : 0.18mm/rev (960mm/min) Depth : 25mm through hole Material : FCD450 Coolant : Water soluble

Performance of re-sharpened drill

Drilling condition Drill : 6.0mm Speed : 100m/min (5,300min-1) Feed : 0.2mm/rev (1,060mm/min) Depth : 20mm through hole Material : FC250 Coolant : Air blow