RUKO KEB-HSSCo-55,0mm Quick-In kernboor

For metalworkers and maintenance crews using magnetic drilling machines or drill presses with a Quick-In adapter, this RUKO annular cutter produces precise 55 mm holes in steel, stainless steel, cast iron, and non-ferrous metals. The fully ground HSS-Co body with 5% cobalt withstands high heat and wear, while the optimized tooth geometry ensures smooth cutting and efficient chip removal.

Key specifications

• Cutting diameter: 55.0 mm
• Cutting depth: 30 mm
• Material: HSS-Co (5% cobalt)
• Shank: Quick-In (Weldon 19 mm / 3/4")
• Surface finish: Uncoated / bright
• Manufacturing process: Fully ground

Why choose it

The cobalt alloy delivers high wear and heat resistance, extending tool life in demanding industrial applications. Its optimized geometry creates high-precision, burr-free holes, reducing the need for secondary finishing.

Ideal use cases

• Drilling large-diameter holes in structural steel
• Creating openings in stainless steel fabrications
• Preparing holes for pipe and conduit installations
• Maintenance and repair work on heavy equipment

Good to know

Use with cutting fluid for best results and tool longevity. A pilot pin is required for core ejection.