Somta Long Series Drill - HSS-E Parabolic Flute - 9.3mm

Somta Long Series Drill - HSS-E Parabolic Flute - 9.3mm

Designed for serious deep-hole drilling, the Somta Long Series Drill in 9.3mm diameter combines durability, precision, and advanced chip control to tackle thick materials with confidence. Built on HSS-E (High-Speed Steel-Enhanced) alloy, this drill bit resists heat and wear, delivering consistent performance even under demanding metalworking conditions. The standout feature is the parabolic flute geometry, which promotes efficient chip evacuation and reduces the forces at the cutting edge, translating into smoother starts, straighter holes, and longer tool life.

Why this drill stands out

• Long-series design provides extended reach for deep holes, reducing the need to switch between multiple shorter bits and minimizing setup time.
• HSS-E construction offers superior hardness and heat resistance, helping maintain cutting edge integrity during prolonged drilling sessions.
• Parabolic flute geometry optimizes chip flow away from the cutting zone, lowering friction, minimizing heat buildup, and improving hole quality.
• Sharp, precise cutting edges deliver clean, bright entry and exit holes with tight tolerances, ideal for precision machining and assembly.
• Efficient chip evacuation reduces clogging in deep holes, enabling consistent diameters and reducing drill wandering.

Practical benefits for your workshop

When you’re drilling through thick or hard workpieces, reliability matters. This 9.3mm HSS-E parabolic drill bit maintains performance from the first hole to the last, delivering:

• Steady cut quality in metal blocks, automotive parts, castings, and structural components.
• Lower cutting forces that help minimize deflection and vibration, leading to straighter holes.
• Extended tool life thanks to heat resistance and durable edge retention, reducing downtime and replacement costs.
• Better process consistency for assemblies that require precise hole alignment and fit.

Ideal use cases

Perfect for deep-hole applications where access is limited or material thickness demands a longer drill reach. Suitable for steel, stainless steel, cast iron, and other dense metals, as well as nonferrous alloys where deep, clean holes are required.

Tips for optimal results

To maximize performance and lifespan, pair the Somta Long Series Drill with stable workholding, appropriate lubrication or coolant, and a controlled feed that respects the drill’s cutting geometry. Start with a conservative speed, allow the parabolic flute to carry away chips, and avoid pushing the bit too aggressively into hard spots to prevent workpiece deflection.