Product Info

🌟 Key Takeaways
•DXAS is an exchangeable head carbide drill that greatly lowers cost per hole.
•The Two-Screw system ensures high rigidity and precise head clamping.
•The Perfect Centering design delivers hole accuracy comparable to solid carbide drills.
•The DP6020 coating provides 300–700% longer tool life than conventional grades.
•It is ideal for deep holes and P/M/K materials while improving production stability.
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■ Common Drilling Problems in Metalworking Industries
Manufacturers using solid carbide drills often face high costs from frequent tool changes, poor hole accuracy, and unstable cutting—especially in hard materials or deep holes like S50C, SCM440, and FC300 reducing productivity and increasing total manufacturing cost.
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■ Main Causes of the Problem
Accurate head–body connection is vital for precise holes. Conventional drills often misalign at the head and shank, causing deviation, vibration, and poor roundness. Single-point fastening also fails under high loads, leading to loosening and faster wear.
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■ The Solution — DXAS: The Next Generation of TRISTAR Drills
The DXAS Series is Mitsubishi Materials’ latest exchangeable head carbide drill, evolved from the DVAS Series. It delivers three key advantages: lower drilling cost per hole, higher hole accuracy and consistency, and longer tool life with improved cutting stability.
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■ Technical Highlights of DXAS Series
1. Two-Screw Fastening System
The dual-screw design reduces shank deformation and provides stable, uniform clamping. This secure connection maintains rigidity under high cutting loads, allowing continuous drilling without head loosening.

2. Perfect Centering Design
The head and body align on a common center axis to minimize hole deviation, delivering solid-carbide-level accuracy and a smooth, consistent hole surface.

3. Advanced Carbide Grade DP6020 (Al-Cr-Si-Ti-N Multi-layer Coating)
The multilayer coating provides high hardness, strong wear resistance, and excellent heat resistance, extending tool life by 300–700% and making it ideal for high-speed, long-cycle production.

4. Low Resistance Geometry & XR Point Thinning
The special cutting edge lowers cutting resistance and enables stable drilling in soft or uneven materials. It also reduces noise, decreases power consumption, and improves chip evacuation to prevent clogging in deep holes.

5. Internal Coolant Flow System with Variable Helix Flute
Coolant is directed to the cutting edge for effective cooling and chip evacuation. The Variable Helix Flute design ensures smooth chip flow and prevents clogging, even in deep holes up to 8× D.
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■ Why Choose MMC Hardmetal (Thailand)
MMC Hardmetal (Thailand) provides carbide cutting tools and precision drilling solutions. Our engineers advise on grades, tools, and cutting conditions to help manufacturers cut drilling cost per hole by up to 70%, extend tool life up to 7×, and achieve stable processing with hole accuracy close to solid carbide drills.
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📘 Summary
The DXAS Series is built for plants needing precise hole drilling, lower cost per hole, and longer tool life. Its new head-clamping system, high-accuracy centering design, and DP6020 coating deliver an efficient, cost-effective solution for industrial drilling.
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❓ FAQ
Q1: What materials is DXAS suitable for?
It covers P, M, and K groups—steel, stainless steel, and cast iron.
Q2: How does the Two-Screw system help?
It boosts clamping force, minimizes shank deflection, and prevents the head from loosening under high loads.
Q3: How does DXAS reduce cost per hole?
Its 300–700% longer tool life and high hole accuracy reduce tool changes and scrap from poor hole quality.
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📚 Glossary (Key Terms)
Exchangeable Head Drill: A drill with a replaceable head to lower tool costs and reduce maintenance time.
Two-Screw System: A dual-screw clamping mechanism that boosts rigidity and minimizes center misalignment.
XR Point Thinning: A specialized point design that lowers cutting force and enhances chip control.
L/D Ratio: The depth-to-diameter ratio indicating a drill’s deep-hole capability.
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📖 Reference
Mitsubishi Materials TOOL NEWS B279G – DXAS TRISTAR Series (2025)
Internal Cutting Report – DXAS vs Solid Carbide Drill (S50C / SCM440 / FC300)
MMC Hardmetal SEA Technical Catalogue
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🔗 Cluster Internal Link
• Basic Knowledge: “Fundamentals of Selecting Carbide Drills for Machining Operations”
• Advance Knowledge: “Stabilizing Deep Hole Drilling in Production Lines”
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🔒 Trust
All information has been verified by MMC Hardmetal (Thailand) to ensure technical accuracy.
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#MMCHardmetal #ToolLife #CarbideCuttingTools #MitsubishiMaterials #DrillingTechnology

📆 Updated: 2025-12-08