Somta Extra Long Series Drill - HSS-E Parabolic Flute - 4.5mm x 185mm

Meet the Somta Extra Long Series Drill - HSS-E Parabolic Flute - 4.5mm x 185mm, a precision tool designed to conquer deep-hole drilling with consistency and ease. This drill’s extra-long reach lets you drill far beyond the surface, reaching into thick workpieces without wobble or deflection.

Crafted from HSS-E, this drill bit delivers enhanced heat resistance and extended tool life, making it well-suited for demanding metalworking environments. The parabolic flute geometry optimizes chip evacuation, keeping long holes clear and reducing the risk of clogging that can slow down your operation. Sharp cutting edges work in harmony with the flute design to produce clean, accurate holes every time, even in challenging materials.

Key features that matter in real work

• Extra-long reach: 185mm flute length provides extended access for deep holes in thick components.
• 4.5mm diameter: Ideal for precise, tight-hole drilling in a range of metals.
• HSS-E construction: Enhanced alloy copy for improved heat resistance and longer tool life under high-speed drilling.
• Parabolic flute: Efficient chip evacuation to minimize back-pressure, reduce heat buildup, and prevent clogging in deep holes.
• Sharp, stable cutting edges: Delivers clean, straight holes with reduced burrs and better dimensional accuracy.

Why this drill stands out for your shop

When you’re drilling deep holes, consistency matters as much as reach. The Somta Extra Long Series Drill integrates extended length, a geometry that promotes steady cutting, and a durable HSS-E core to withstand the heat generated by extended drilling. This combination translates to reliable performance across a variety of metals—steel, aluminum, cast iron, and other alloys—making it a dependable choice for fabrication, automotive, mold making, and general engineering work.

Ideal use scenarios

• Deep-hole drilling in thick metal plates and assemblies where standard bits can’t reach.
• Producing precise pilot or clearance holes that require extended depth.
• Applications in automotive, aerospace, and industrial fabrication where accuracy and long tool life matter.

Practical tips for best results

• Use steady, moderate feed rates and adequate lubrication or coolant to manage heat during deep-hole drilling.
• Center-punch or pilot-drill to establish a true starting point, reducing wander on initial contact.
• Ensure the workpiece is securely clamped to prevent movement that can degrade hole quality.
• Inspect the flute clearance periodically; clean chips promptly to maintain consistent performance in long holes.