Somta Long Series Drill - HSS-E Parabolic Flute - 8.2mm

When precision meets endurance, the Somta Long Series Drill - HSS-E Parabolic Flute - 8.2mm delivers reliable deep-hole performance for demanding metalworking projects. The long, slender body is designed to reach those hard-to-drill depths without compromising hole quality, making it an essential tool for fabricators, machinists, and engineers who frequently work with thick materials.

Why the Parabolic Flute Design Matters

• Effortless chip evacuation thanks to the parabolic flute geometry. Chips exit cleanly and continuously, preventing re-cutting and reducing heat buildup that can dull cutting edges.
• Lower cutting forces during entry and progression, which translates to smoother drilling, less workpiece distortion, and longer tool life in tough metals.
• Reduced friction along the flute surfaces, helping to keep the drill cooler and maintain sharp, precise cuts over extended use.

Material and Construction — Built to Last

• HSS-E (High-Speed Steel with enhanced wear resistance) provides superior durability and heat resistance for demanding drilling tasks, especially in thick steel sections and alloy components.
• Sharp cutting edges deliver clean, perpendicular holes with minimized burrs, improving fit and finish for assemblies and components requiring precision dowel or fastener alignment.

Ideal Use Cases

• Deep-hole drilling in steel frames, automotive housings, and structural metalwork where conventional drills falter at depth.
• Through-holes in cast iron or dense alloys where chip evacuation and heat management are critical to maintain accuracy.
• Long-reach drilling tasks in fabrication shops, maintenance departments, and workshop environments where tool longevity matters as much as hole quality.

Practical Tips for Best Results

• Secure the workpiece with a solid vise or jig to prevent drift during long-hole drilling.
• Use a steady, moderate feed and avoid aggressive plunging. Let the flute carry away chips rather than forcing material.
• Apply light lubrication or coolant to manage heat buildup, especially on stainless or alloy steels.
• For very deep holes, employ short pecking cycles to clear chips and maintain cutting efficiency.

What You Get

• Diameter: 8.2 mm
• Type: Long Series Drill, HSS-E, Parabolic Flute
• Application focus: Deep-hole drilling in thick metallic workpieces
• Premium durability and heat resistance designed to extend tool life in demanding jobs

Choose the Somta Long Series Drill - HSS-E Parabolic Flute - 8.2mm for dependable depth capability, clean hole quality, and a tool that stays productive longer under tough drilling conditions.