Somta Long Series Drill - HSS-E Parabolic Flute - 8.5mm

Meet the Somta Long Series Drill - HSS-E Parabolic Flute - 8.5mm, a purpose-built tool for serious deep-hole tasks. Crafted for through-thick materials, this drill delivers reliable penetration where standard bits struggle.

The secret to its performance lies in three core design choices: long length for sustained cutting depth, HSS-E construction for endurance under heat, and a parabolic flute that thinks ahead about chips and cutting forces.

Key features that matter on the shop floor

• Long length for deep holes. The extended flute length lets you reach through thick workpieces in a single setup, reducing the need for backing out and repositioning.
• HSS-E durability. High-Speed Steel-Enhanced build tolerances to heat and wear, enabling repeated drilling passes without dulling quickly.
• Parabolic flute for efficient chip evacuation. The wider, curved flute channel moves chips away from the cutting edge, lowering friction and preventing chip packing that can stall drills.
• Sharp cutting edges and geometry. Precision-ground lips ensure clean hole diameters with less burr and better hole straightness.
• Reduced cutting forces and heat. Parabolic geometry distributes load more evenly, helping you maintain bite in tough materials and extend tool life.
• Diameter 8.5mm, versatile across metals. Suited for steel, stainless steel, cast iron, and other common engineering alloys in industrial settings.

Ideal applications: deep-hole drilling in automotive components, equipment housings, mold channels, and structural metalwork where holes must go through substantial thickness with consistent accuracy.

How this drill compares to standard bits: standard bits often struggle with chip evacuation and heat buildup in deep holes. The Somta Long Series with parabolic flute design keeps chips flowing and temperatures down, so you can drill longer with fewer repositionings and re-drills.

Practical tips for best results: secure the workpiece, apply steady feed, and use appropriate cutting fluid to maximize life. Let the drill cut at a measured pace, pause to clear chips on longer holes, and avoid side loads that can deflect the bit.