RUKO KEB-HSSCo-Mod.30-57.0mm HSS-Co Annular Cutter 57 mm Cutting Diameter 30 mm Cutting Depth Weldon Shank

Large-diameter holes in steel often require heavy, slow twist drills that wander and leave a rough finish. The RUKO KEB-HSSCo-Mod.30-57.0mm annular cutter solves this by removing only a ring of material, leaving a solid core. This reduces cutting force, speeds up drilling, and produces clean, accurate holes.

Who is it for

Metalworking professionals and serious fabricators who use magnetic drilling machines or pillar drills to create large holes in steel, stainless steel, cast iron, and non-ferrous metals. Ideal for structural steel, heavy equipment repair, and production drilling.

Main features

• High-speed steel with cobalt (HSS-Co) for heat resistance and long tool life
• 57.0 mm cutting diameter, 30 mm cutting depth
• Weldon shank (19 mm / 3/4 inch) for secure mounting in magnetic drill chucks
• Two cutting edges for balanced, efficient cutting
• Bright finish for corrosion resistance and chip flow
• Part of the Modul 30 series

Specifications

• Tool type: Core drill bit (annular cutter)
• Material: HSS-Co
• Cutting diameter: 57.0 mm
• Cutting depth: 30 mm
• Shank type: Weldon
• Shank diameter: 19 mm (3/4 inch)
• Application: Steel, stainless steel, cast iron, non-ferrous metals
• Compatibility: Magnetic drilling machines, pillar drills (with adapter)
• Number of cutting edges: 2
• Coolant recommendation: Use with cutting oil or coolant
• Surface treatment: Bright finish
• Drilling method: Annular (core) drilling

Tips

Use cutting oil or coolant to extend tool life and improve hole quality. Ensure the cutter is securely seated in the Weldon shank holder before starting. For optimal results on thick material, apply steady, moderate feed pressure and clear chips frequently.