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home > Dormer Pramet A125 21/64 Inch x 310 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328 > Dormer Pramet A125 21/64 Inch x 310 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328
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Dormer Pramet A125 21/64 Inch x 310 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328Engineered for deep hole precision and dependable performance, the Dormer Pramet A125 21 64 Inch x 310 mm HSS Straight Shank Extra Long Series Drill (BS 328) is the go to choice when reach and rigidity matter. This drill combines a robust starting point with versatile material compatibility, delivering clean holes in a wide range of metals. Why this drill stands out 118 degree conventional point: A strong, self centering tip that starts quickly and
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Engineered for deep-hole precision and dependable performance, the Dormer Pramet A125 21/64 Inch x 310 mm HSS Straight Shank Extra Long Series Drill (BS 328) is the go-to choice when reach and rigidity matter. This drill combines a robust starting point with versatile material compatibility, delivering clean holes in a wide range of metals.

Why this drill stands out

  • 118-degree conventional point: A strong, self-centering tip that starts quickly and resists wandering. The geometry is also easy to re-grind, helping you extend tool life between sharpenings.
  • Steam oxide finish: Reduces friction and helps prevent workpiece material from sticking to the cutting edge, promoting smoother chip flow and longer edge life.
  • Extra-long 310 mm length: Specifically designed for drilling very deep holes and applications where extended reach is essential—no need to swap tools mid-task.
  • Premium HSS material: High-speed steel construction delivers strong performance across a variety of metals, including steel, aluminum, and stainless steel, while maintaining good edge retention.
  • Straight shank design: Compatible with standard drill chucks and collets, providing consistent grip and accurate hole alignment on a range of machines.
  • BS 328 compliance: Size and fit meet established standards for reliable interchangeability and predictable performance in professional shops.

Ideal uses and practical benefits

  • Perfect for fabrication, maintenance, and repair tasks that require deep bore holes in long workpieces, frames, or assemblies where access is limited.
  • Well-suited for drilling through mixed materials commonly found in machinery and automotive components, from steel to aluminum and stainless steel.
  • In a production or workshop setting, this drill reduces tooling changes and downtime when deep-hole drilling is a frequent requirement.

Tips for best results

  • Pair with an appropriate spindle speed and feed rate to optimize the 310 mm length—start with conservative speeds and adjust based on material and breakthrough feel.
  • Utilize a steady lubrication or coolant to manage heat buildup and extend tool life, especially when working with stainless steel or alloys.
  • Regularly inspect the cutting edges after re-sharpening to maintain the strong point and ensure consistent hole quality.

Dormer Pramet A125 21/64 Inch x 310 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

Item no : 1800113016
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US$ 75.95
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