Iwaki, Japan – March, 2026 – Tungaloy Corporation (President: Satoshi Kinoshita, Head Office: Iwaki City, Fukushima Prefecture) announces the expansion of its high-efficiency solid carbide drill series “DSW,” adding 22 new items covering 3–10mm diameters with L/D=16–30 to enhance tool selection and performance in small-diameter deep hole machining.
Challenges and Trends
In the field of precision components—such as automotive parts and semiconductor manufacturing equipment, the demand for small-diameter deep hole drilling with an L/D ratio exceeding 10—such as cooling holes and sensor holes—has been increasing year by year. In these processes, hole deviation and chip clogging tend to occur in the ø3–10 mm range, making it a major challenge to maintain stable machining accuracy and productivity. This issue becomes even more prominent when performing deep hole machining on general-purpose machine tools such as machining centers and lathes. Under these conditions, there is a growing need for solid carbide drills that can achieve both high efficiency and high precision with stability, and the market strongly demands an expansion of product lineups that cover a wide range of sizes.
Product Overview
The DSW is a high-performance solid carbide drill with an advanced coating.
It delivers excellent wear resistance and long tool life, enabling high-precision drilling in a wide range of metallic materials such as steel and cast iron.
Its innovative cutting edge design ensures stable machining and exceptional dimensional accuracy.
With a variety of types available, including external and internal coolant options, SolidDrill offers the optimal solution for diverse machining conditions.
Benefits and Features
Feature 1: High-precision and stable deep hole drilling performance
– The optimized point angle and double-margin design provide excellent centering and guiding performance.
– Ensures outstanding hole roundness and straightness, enabling high-precision machining even for deep holes.
– Minimizes runout and chatter during machining to maintain consistent quality and stability.
Feature 2: Improved productivity through high-efficiency machining
– Achieves significantly higher cutting and feed speeds compared to long HSS drills and gun drills.
– Eliminates the need for pecking cycles or step drilling, reducing overall cycle time.
– Enhances equipment utilization and optimizes production costs through high-efficiency operation.
Feature 3: Excellent wear resistance and wide applicability
– Utilizes the versatile carbide grade “AH725,” combining long tool life with stable cutting performance.
– Provides reliable chip evacuation and tool life even under MQL (Minimum Quantity Lubrication) conditions.
– Suitable for a wide range of materials such as steel, stainless steel, and cast iron, meeting diverse machining needs.
