Meet the Dormer Pramet A952 25.00 mm HSS High-Performance Multi-Application Morse Taper Shank Extra-Long Drill (DIN 1870). Built for serious machining, this drill merges robust construction with intelligent geometry to tackle deep-hole projects across a variety of metals. If you regularly push for precision, efficiency, and clean finishes in hard-to-reach holes, the A952 is engineered to meet those demands with consistent results.

• 130° point for easier starts and self-centering — designed to reduce the initial push force and help the drill find true alignment right from the entry, minimizing wandering and chatter.
• Bright finish to prevent sticking — a smooth, reflective surface reduces material adhesion on the cutting edge, promoting cleaner starts and less downtime between holes.
• Special parabolic flute design — engineered for drilling extra-deep holes in a single pass, with efficient chip evacuation that lowers heat buildup and extends tool life.
• Premium HSS material — high-speed steel provides reliable performance across ferrous and non-ferrous metals, including steel, aluminum, and stainless steel, while maintaining edge retention under demanding cutting speeds.
• Extra-long series with Morse taper shank — built for deep-hole applications, the extra length combined with a rigid Morse taper shank ensures maximum rigidity and straightness when mounted directly in the spindle.
• DIN 1870 compliant — precision-drilled dimensions and compatibility with standard machine tools ensure dependable interchangeability in industrial setups.

The A952 is ideal for situations where deep, straight holes are required without sacrificing surface finish or tool life. Use it for deep pin holes, bushings, or through-holes in steel, aluminum, or stainless components where conventional drills struggle to maintain accuracy or clearance. Because the drill is designed to be held directly in the spindle, it shines in machine applications that demand rigid coupling and precise alignment, such as milling centers and drill presses equipped for Morse-taper tooling.

Practical tips for maximum performance:

• Set appropriate spindle speeds and feeds for the material being drilled to balance cutting action with heat management. Higher-strength materials may benefit from slightly slower feeds to preserve edge life.
• Use light lubrication or coolant on harder metals to reduce built-up edge and improve surface finish on the drilled hole.
• Let the flute design do the work—avoid excessive peck drilling; the parabolic flute is optimized for deep holes, so minimize interruptions to maintain steady swarf evacuation.
• Ensure the Morse taper shank is clean and fully seated in the spindle for maximum rigidity and concentricity.
• Inspect the drill before and after use for any signs of chipping or wear, and replace as needed to maintain hole accuracy and drilling efficiency.

When you need a reliable, long-reach drilling solution that preserves accuracy, surface finish, and tool life across a range of materials, the Dormer Pramet A952 25.00 mm HSS High-Performance Multi-Application Morse Taper Shank Extra-Long Drill is designed to deliver. It’s a practical choice for shops that value consistency, industrial-grade standards, and a drill that stays sharp through tough, deep-hole tasks.