Carbide Drill Finder

Nachi America

Index

Nachi America’s drill lineup excels in demanding applications like automotive parts and aerospace components, where precision and durability are critical.
This article covers key product features and after-sales support.

Nachi America_ Official Website
Source: Nachi America Official Website
https://www.nachiamerica.com

Recommended
Applications
for Nachi America

Nachi America's carbide drills are ideal for manufacturing environments where scrap costs due to tool breakage or machining defects are a concern. Materials like stainless steel and heat-resistant alloys—common in automotive and aerospace components—generate high cutting resistance and heat, which can lead to rapid tool wear and failure.

To address this, Nachi America offers drills with internal coolant (oil-hole) design. Coolant is delivered directly to the cutting edge, ensuring effective lubrication and chip evacuation. This enables deep-hole drilling (up to 40xD) without the need to retract the drill mid-process.

These features help prevent heat-related defects and chip clogging, making the drills especially effective in shops that frequently handle difficult-to-machine materials. As a result, users can expect longer tool life and lower cost per part.

Note: Performance may vary depending on tool type, cutting speed, feed rate, coolant type, and machine rigidity.

How to Choose Carbide Drills
from Nachi America

For General Holemaking Across Multiple Materials

product image
Source: Nachi America Official Website
https://www.nachi-technologypark.jp/tool/product02/

Recommended Series: AQUA REVO DRILL Series

For shops machining a wide range of materials, the AQUA REVO DRILL Series is a strong first choice for general-purpose holemaking.

This high-performance carbide drill has been redesigned from the ground up with a new carbide substrate, coating, and geometry. The high-strength carbide balances hardness and toughness, while the linear cutting edge helps distribute cutting forces and reduce stress concentration.

The result is more stable torque and thrust in mixed-material jobs and high-volume production environments.

Best Fit Applications

  • General holemaking in mixed-material production
  • High-volume machining lines that require stable drilling performance
  • Applications involving steel, stainless steel, hardened steel, cast iron, aluminum, copper alloys, nickel-based alloys, or titanium alloys

Compatible Materials

  • Carbon steel
  • Alloy steel
  • Cast iron
  • Aluminum alloys
  • Copper alloys
  • Hardened Steels (<50 HRC)
  • High Temp Alloys
  • Stainless Steels
  • PH Stainless Steels
*Source: Nachi America Official Website[PDF]
https://www.nachiamerica.com/download/332-general-catalog/

Available Lineup

  • Stub Length: Ø2.0 – 16.0 mm (approx. 0.079" – 0.630")
  • Jobber Length: Ø2.0 – 16.0 mm (approx. 0.079" – 0.630")
  • 3XD Length: Ø3.0 – Ø16.0 mm (approx. 0.118” – 0.630”)
  • 5XD Length: Ø3.0 – Ø16.0 mm (approx. 0.118” – 0.630”)
  • 8XD Length: Ø3.0 – Ø16.0 mm (approx. 0.118” – 0.630”)
*Source: Nachi America Official Website[PDF]
https://www.nachiamerica.com/download/332-general-catalog/

For Deep-Hole Drilling

product image
Source: Nachi America Official Website
https://www.nachiamerica.com/products/129-aqua-drill-ex-oil-hole-deep-drill-series/

Recommended Series: AQUA DRILL EX OIL HOLE Series

For deep-hole drilling, the AQUA DRILL EX OIL HOLE Series helps maintain stable long-hole machining without intermediate retraction or pecking.

Internal coolant holes improve chip evacuation during deep drilling, while the sharp cutting edge reduces cutting resistance and helps keep the drill on path. Used with a pilot drill, the series also helps minimize deflection and maintain hole straightness in long, deep holes.

It is especially effective for sticky materials such as stainless steel, where stable feed and reliable chip control are essential for long tool life and consistent hole quality.

A high-heat-resistant multilayer coating, with oxidation resistance up to 1,100°C, helps reduce oxidation and wear under heavy thermal loads.

Best Fit Applications

  • Deep-hole drilling without pecking
  • Applications where hole straightness and deflection control are important
  • Long-hole machining in stainless steel or other sticky materials
  • Machining conditions with high heat generation

Compatible Materials

  • Structural steel
  • Carbon steel
  • Gray cast iron
  • Alloy steel
  • Pre-hardened steel
  • Copper alloys
  • Die steel
  • Ductile cast iron
  • Stainless steel
*Source: Nachi America Official Website[PDF]
https://www.nachiamerica.com/download/332-general-catalog/

Available Lineup

  • 3D / 5D: Ø1.0 – 2.9 mm (approx. 0.039" – 0.114")
  • 10D / 15D / 20D: Ø1.0 – 12.0 mm (approx. 0.039" – 0.472")
  • 25D / 30D: Ø1.0 – 8.0 mm (approx. 0.039" – 0.315")
  • 40D: Ø1.0 – 7.0 mm (approx. 0.039" – 0.276")
  • Pilot Type: Ø1.015 – 12.03 mm (approx. 0.040" – 0.474")
*Source: Nachi America Official Website[PDF]
https://www.nachiamerica.com/download/332-general-catalog/

For Flat-Bottom Holes, Inclined Surfaces, and Burr Control

product image
Source: Nachi America Official Website
https://www.nachiamerica.com/products/126-aqua-drill-ex-flat-oil-hole-series/

Recommended Series: AQUA DRILL EX FLAT Series

For flat-bottom holes, angled-surface entry, and burr reduction, the AQUA DRILL EX FLAT Series is the most application-specific choice.

Its flat 180° cutting edge shears material cleanly at the hole exit instead of pushing it outward. This helps minimize burrs, especially in materials prone to burring, such as cast iron and aluminum.

The flat tip also provides strong engagement on inclined or thin surfaces, making the series suitable for counterboring and pre-hole drilling in a single pass. By combining multiple steps into one operation, it can help eliminate the need for center drills or end mills, improve positioning accuracy, and shorten cycle times.

The Aqua EX coating supports consistent performance across a range of materials, making this series a practical choice when burr control, surface engagement, and process simplification are key priorities.

Best Fit Applications

  • Flat-bottom hole drilling
  • Drilling on inclined or thin surfaces
  • Counterboring and pre-hole drilling in one operation
  • Burr control in cast iron, aluminum, and other burr-prone materials
  • Automotive brackets, housings, and aircraft reinforcing ribs

Compatible Materials

  • Low-carbon steel
  • High-carbon steel
  • Alloy steel
  • Tool steel
  • Hardened steel (up to 45 HRC)
  • Martensitic stainless steel (400 series)
  • Aluminum (6061, 7075)
  • Copper alloys
  • High Temp Alloys
  • Austenitic Stainless Steels (300 Series)
  • PH Stainless Steels
*Source: Nachi America Official Website[PDF]
https://www.nachiamerica.com/download/332-general-catalog/

Available Lineup

  • Super Stub Length: Ø2.0 – 20.0 mm (approx. 0.079" – 0.787")
  • Stub Length: Ø0.2 – 20.0 mm (approx. 0.008" – 0.787")
  • Corner Radius: Ø3.0 – 12.0 mm (approx. 0.118" – 0.472")
  • Jobber Length / Long Shank: Ø3.0 – 20.0 mm (approx. 0.118" – 0.787")
  • 3XD Length: Ø1.0 – Ø16.0 mm (approx. 0.039” – 0.630”)
  • 5XD Length: Ø1.0 – Ø16.0 mm (approx. 0.039” – 0.630”)
*Source: Nachi America Official Website[PDF]
https://www.nachiamerica.com/download/332-general-catalog/

For more detailed technical information and product comparisons, visit our special feature on carbide drills for stainless steel.
The page highlights three top manufacturers with proven strengths in stainless steel machining, including in-depth coverage of recommended tools for this demanding material.

3 recommended Carbide Drills
for Stainless Steel

After-Sales Support from Nachi America

Nachi America provides regrinding services for carbide drills at its manufacturing facility in Greenwood, Indiana.
Customers can also access training programs on drilling, milling, and threading tools, led by Nachi’s cutting tool specialists.

In partnership with CAD/CAM providers, Nachi America offers programming support for machining operations.
Their technical support team is available for troubleshooting and application consultations, helping customers optimize conditions and maintain stable operations after tool adoption.

With these services in place, Nachi America offers peace of mind and ongoing support for users in demanding machining environments.

Company Information

Address Nachi America Inc., 715 Pushville Rd, Greenwood, IN 46143, USA
Phone Number +1-877-622-4487
Official Website https://www.nachiamerica.com/
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