RUKO VOB-3S-30 Weldon Shank HSS Core Drill Bit 12 mm Cutting Diameter, 30 mm Cutting Depth

Drilling large-diameter holes in steel often means slow progress, wandering bits, and excessive tool wear. The RUKO VOB-3S-30 Weldon Shank HSS Core Drill Bit solves this by removing only a ring of material, not the full core, so you drill faster with less effort and get clean, accurate holes every time.

Who is it for

This core drill is built for metalworking professionals and serious fabricators who use magnetic drilling machines or pillar drills with a Weldon adapter. It is ideal for creating precise holes in steel plates, stainless steel, cast iron, and non-ferrous metals.

Main features

• High-speed steel (HSS) body for durability and heat resistance
• Weldon shank (19 mm / 3/4 inch) for secure, wobble-free mounting
• 12.0 mm cutting diameter, 30 mm cutting depth
• 3-flute design for efficient chip evacuation
• Bright finish and precision ground for accurate cutting
• Core ejection for easy slug removal
• Optimized for fast, precise drilling in tough materials

Specifications

• Drill type: Core drill (annular cutter)
• Material: High-speed steel (HSS)
• Shank type: Weldon shank
• Shank diameter: 19 mm (3/4 inch)
• Cutting diameter: 12.0 mm
• Cutting depth: 30 mm
• Number of flutes: 3
• Total length: 65 mm
• Application materials: Steel, stainless steel, cast iron, non-ferrous metals
• Tool compatibility: Magnetic drilling machines, pillar drills (with adapter)
• Surface finish: Bright
• Core ejection: Yes
• Precision ground: Yes
• Product series: VOB-3S

Tips

Use cutting fluid or coolant when drilling stainless steel or thick material to extend tool life. Ensure the Weldon shank is fully seated and tightened before starting. For best results, run at the recommended speed for your material and apply steady, even pressure.