Tungaloy Corporation

Tungaloy Corporation offers solid carbide drills that meet the demands of both high-volume cast iron machining and precision deep-hole drilling at ultra-small diameters.

This article introduces Tungaloy’s two main drill series—the Solid4FlutesDrill and SolidDrill (DSW, DSM)—highlighting their features, product lineups, and advantages in efficiency, tool life, and cost performance.

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Tungaloy Corporation

Tungaloy's drills are ideal for manufacturers in the automotive, aerospace, medical device, and precision parts industries—especially those aiming to reduce tooling costs, inventory management workload, and setup changeover time.

With support for a wide variety of materials and hole depths, each series is designed to minimize tool changes and reduce the number of tool types required in production.

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

How to Choose Tungaloy Carbide Drills

High-Speed Cast Iron Drilling

Recommended: Solid4FlutesDrill Series

If your priority is faster drilling in cast iron parts, the Solid4FlutesDrill series is designed for high-efficiency, high-precision machining. It is especially suitable for high-volume production in automotive and construction machinery applications.

Its 4-flute design with a self-centering tip allows higher feed rates than conventional 2-flute drills, helping reduce cycle time. The 4-margin structure supports the hole wall at four points, improving straightness and roundness.

The AH9130 grade also provides strong wear and chipping resistance, supporting longer tool life and reduced downtime in demanding production environments.

Best Suited For

• High-speed cast iron drilling
• Automotive parts
• Construction machinery parts
• High-volume production
• Applications requiring hole straightness and roundness
• Operations where cycle time reduction is important

Available Lineup

• DSQ-E3 / DSQ-E5 Series: Without coolant holes

General Steel Drilling

Recommended: SolidDrill DSW Series

If you need stable drilling in steel, stainless steel, cast iron, or heat-resistant alloys, the SolidDrill DSW series offers a practical choice for medium-diameter applications from Ø3 to 12 mm.

Its coating and cutting-edge geometry help reduce cutting resistance while minimizing wear and chipping. The lineup includes both internal and external coolant types, allowing users to choose based on machine setup, hole depth, and cost requirements.

Best Suited For

• General steel drilling
• Stainless steel
• Cast iron
• Heat-resistant alloys
• Medium-diameter holes from Ø3 to 12 mm
• Applications requiring stable tool life

Available Lineup

• DSW-DI Series: Ø3–12 mm, with internal coolant holes
• DSW-DE Series: Ø3–12 mm, external coolant type
• DSW-CI Series: Ø3–10 mm, cylindrical shank with internal coolant holes

Micro-Diameter Drilling

Recommended: SolidDrill DSM Series

If your application requires ultra-small holes or small-diameter deep-hole drilling, the SolidDrill DSM series is designed for diameters starting from Ø0.1 mm.

The series supports sizing in 0.01 mm increments and includes center drill models that help prevent misalignment at hole entry. This makes it suitable for high-precision parts in electronics, medical devices, and fine component manufacturing.

Best Suited For

• Micro-diameter drilling
• Small-diameter deep-hole drilling
• Electronics components
• Medical device parts
• Fine component manufacturing
• Applications requiring accurate hole starting

Available Lineup

• DSM Series: Ø0.1–3 mm, L/D = 5 to 15
• DSM-CP Series: Ø3 mm, center drill for hole-starting accuracy

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.

After-Sales Support from Tungaloy Corporation

After-sales support information is not available on the official website.

Company Information

Address	11-1, Yoshima Industrial Park, Iwaki City, Fukushima, Japan
Phone Number	+1-888-554-8394 (Tungaloy NTK America)
Official Website	https://tungaloy.com/