Somta Long Series Drill - HSS-E Parabolic Flute - 5.2mm

Somta Long Series Drill - HSS-E Parabolic Flute - 5.2mm is engineered for metalworking professionals who demand deep-hole capability without sacrificing hole quality. This long-reach drill combines a robust HSS-E (High-Speed Steel Enhanced) substrate with a precision parabolic flute geometry, delivering superior performance when you need to bore through thick materials with consistent accuracy.

Why this drill stands out

• Extended reach for deep holes: The long-series design gives you reliable access to recessed areas and thick workpieces, reducing the need for multiple step-ups or boring routines.
• HSS-E durability and heat resistance: The enhanced steel formulation stands up to heat and wear, maintaining sharpness longer under demanding drilling tasks.
• Parabolic flute for efficient chip evacuation: The curved flute path channels chips away from the cutting edge, lowering cutting forces and preventing chip clogging in deep bores.
• Sharp cutting edges for clean holes: Precision geometry yields clean, true holes with minimal workpiece distortion, ideal for precise assemblies and tight tolerances.
• Reduced friction and heat build‑up: Flute geometry minimizes contact friction, helping to prolong tool life and minimize heat-related dimensional changes during drilling.

Ideal applications and use cases

This 5.2mm diameter drill is perfect for automotive, aerospace, and general fabrication applications where deep, through-holes in metal are required. It shines when boring through:

• Thick steel plates and structural components
• Cast iron and tough alloys
• Machined housings and fixtures with deep cavities

Practical tips for best results

• Use a steady feed and avoid aggressive plunging to maintain edge integrity and hole concentricity.
• Coolant or cutting fluid helps dissipate heat; start with moderate speeds and fine-tune based on material and chip formation.
• Secure the workpiece firmly to prevent deflection, especially when drilling long bores.
• Pair with a compatible drill chuck or holder that accommodates long bits and maintains rigidity at depth.

Engineered for reliability, the Somta Long Series Drill - HSS-E Parabolic Flute - 5.2mm delivers exceptional depth capability, consistent hole quality, and extended tool life for challenging metalworking tasks. When your project demands deep, precise bores with efficient chip clearance, this drill is a dependable workhorse in your toolkit.