Fein HSS-Nova 25 63133180051 reikäsaha 18 mm Weldon-varsi

When drilling large-diameter holes in steel, standard twist drills struggle with high cutting forces, poor chip evacuation, and excessive heat. The Fein HSS-Nova 25 core drill bit solves these problems by cutting only the periphery of the hole, leaving a solid core. This annular cutter design dramatically reduces power consumption and drilling time while producing clean, burr-free holes.

Who is it for

Professional metalworkers, fabricators, and maintenance technicians who need fast, accurate holes in steel, stainless steel, and non-ferrous metals using magnetic core drilling machines. Ideal for structural steel work, pipe fitting, and heavy equipment repair.

Main features

• High-speed steel (HSS) construction with precision-ground cutting edges for long life and consistent performance.
• 18 mm cutting diameter and 25 mm cutting depth for common industrial hole sizes.
• Weldon shank (19 mm / 3/4 inch) ensures secure mounting and accurate centering in magnetic drill presses.
• Internal cooling channels direct coolant to the cutting zone, reducing heat and extending tool life.
• Annular cutting geometry removes only a ring of material, requiring less power and leaving a reusable slug.

Specifications

• Brand: Fein
• Model: HSS-Nova 25
• MPN: 63133180051
• EAN: 4014586612560
• Drill bit type: Core drill (annular cutter)
• Material: High-speed steel (HSS)
• Drilling diameter: 18 mm
• Cutting depth: 25 mm
• Shank type: Weldon
• Shank diameter: 19 mm (3/4 inch)
• Suitable materials: Steel, stainless steel, non-ferrous metals
• Compatibility: Magnetic core drilling machines with Weldon 19 mm shank
• Number of pieces: 1
• Internal cooling: Yes
• Country of origin: Germany

Tips

Always use cutting fluid or coolant for best results and maximum tool life. Ensure the magnetic drill is securely attached to the workpiece and the cutter is properly seated in the arbor. Apply steady, moderate feed pressure—let the tool do the work. After drilling, remove the core slug from the cutter before starting the next hole.