RUKO KEB-HSS Mod.55 39,0 mm ydinpora Weldon-varrella

Professional metalworkers rely on this RUKO annular cutter when they need to produce clean, accurate 39 mm holes in steel plates, beams, or pipes. The core drilling method removes a solid slug, saving time and power compared to twist drills. It is ideal for use in magnetic drilling machines or pillar drills equipped with a Weldon chuck.

Key specifications

• Cutting diameter: 39.0 mm
• Cutting depth: 55 mm
• Material: HSS-XE high-speed steel
• Shank type: Weldon 19 mm (3/4")
• Application: Steel, stainless steel, cast iron, non-ferrous metals
• Maximum tensile strength: 900 N/mm²
• Cooling: External recommended
• Pilot pin: Required (specific to cutting depth)

Why choose it

The HSS-XE steel construction delivers long tool life and consistent performance in demanding industrial environments. Multi-tooth geometry ensures smooth cutting and efficient chip evacuation. The bright ground finish reduces friction and improves durability.

Ideal use cases

• Creating large diameter holes in structural steel
• Drilling through stainless steel fabrications
• Preparing pipe and tube for welding or bolting
• Maintenance and repair in heavy machinery

Good to know

This cutter belongs to the Mod.55 series, offering a 55 mm cutting depth. It requires a compatible pilot pin and external cooling for optimal results. The Weldon shank ensures secure clamping and accurate centering in magnetic drills.