Somta Extra Long Series Drill - HSS-E Parabolic Flute - 2.5mm x 140mm

Somta Extra Long Series Drill - HSS-E Parabolic Flute - 2.5mm x 140mm

When your work requires a truly deep hole with precision and reliability, this Somta extra-long drill bit steps up to the task. Built for deep hole drilling, it reaches into thick workpieces and hard-to-access interiors without compromising on hole quality or consistency.

What makes this drill uniquely capable

• Extended reach for deep holes with a 140mm flute length and a 2.5mm diameter, designed to cleanly bore into depths that shorter bits can’t reach.
• HSS-E construction delivers outstanding durability, heat resistance, and longer tool life under demanding drilling conditions.
• Parabolic flute geometry optimizes chip evacuation, minimizes clogging, and reduces friction and heat buildup for smoother cutting and faster material removal.
• Sharp cutting edges provide clean, accurate holes with minimal burr, even when drilling through tough metals.

Why this drill matters for your workflow

Deep-hole drilling often tests tool rigidity and chip management. The Somta extra-long parabolic drill is engineered to maintain alignment and reduce deflection as it penetrates thick workpieces. In practice, you’ll notice:

• Better hole straightness in steel, stainless, aluminum, and cast iron thanks to the robust flute design.
• Efficient chip clearance that lowers dwell time between pecks, keeping heat under control and extending bit life.
• Consistent hole quality across the entire depth, which translates to more reliable fits for fasteners, bushings, or inserts.

Practical usage tips

To get the most from the Somta Extra Long Series Drill - HSS-E Parabolic Flute, consider these guidelines:

• Use appropriate spindle speeds and feed rates for the material you’re drilling; deeper holes benefit from steady, controlled feeds.
• Apply a light lubricant or cutting fluid to manage heat and extend tool life, especially in harder metals.
• Use a peck drilling technique to break up chips and prevent clogging; pause to evacuate chips every few millimeters of depth.
• Ensure solid workholding and minimal V-impact in the workpiece to maintain straightness and reduce vibration.

Who benefits most

Ideal for professional machinists, toolmakers, and serious hobbyists tackling deep internal holes in metal parts, molds, or assemblies. It’s particularly well-suited for applications that demand precise hole depth and clean finishes without compromising tool life.

Specification at a glance

Diameter and length: 2.5 mm x 140 mm | Material: HSS-E | Geometry: Parabolic flute | Purpose: Deep-hole drilling