Somta Extra Long Series Drill - HSS-E Parabolic Flute - 7mm x 370mm

Reach deeper, drill cleaner, and finish with confidence. The Somta Extra Long Series Drill - HSS-E Parabolic Flute, sized 7mm x 370mm, is purpose-built for deep-hole drilling where conventional bits struggle. Its extra-long reach and robust construction empower you to tackle through-holes and extended cavities without repositioning or multiple setups.

Key features that drive reliable performance in demanding environments:

• Extra-long reach with a 370 mm overall length lets you access deep workpieces, fixtures, and assemblies from a single setup, reducing cycle times and misalignment risks.
• HSS-E (High-Speed Steel - E) composition delivers superior heat resistance and extended tool life under continuous drilling, even in tougher metals and alloys.
• Parabolic flute geometry enhances chip evacuation, dramatically reducing chip clogging and the risk of built-up heat that can compromise hole quality.
• Precision-ground cutting edges provide clean, accurate holes with minimal wander, helping you hit tight tolerances on every job.
• Efficient friction management with flute design that minimizes heat buildup, supporting longer tool life and steadier performance during deep-hole operations.

Ideal use cases include deep-through holes in ferrous and non-ferrous metals, long pockets in engine components, die-casting tooling, and fixture work where access is limited. This drill is especially valued in machine shops, maintenance departments, and production environments that demand repeatable, quality holes in thick or complex parts.

Practical tips for optimal results:

• Pair with appropriate cutting fluid or coolant to maximize tool life and chip control during deep drilling.
• Use a controlled pecking approach to clear chips and prevent heat buildup—gradually progress depth with short, deliberate retracts.
• Secure the workpiece firmly and use steady feed rates to maintain straightness and reduce deflection in long drills.
• Match your spindle speed and feed to the material type; start conservative and adjust based on hole quality and chip behavior.

Compared to standard-length drills, the Somta Extra Long Series Drill in HSS-E with a parabolic flute delivers unparalleled reach, dependable chip evacuation, and consistent hole quality for deep drilling tasks. If your projects routinely push into the interior of thick parts, this drill bit provides the performance and durability that production environments require.