RUKO spiraalboor DIN 345 type N, HSS, morseconus-schacht MK4, Ø 44,0 mm (1000028710)

For machinists and metalworking professionals who need to bore large, precise holes in tough materials, this RUKO core drill bit delivers reliable performance. The 44.0 mm diameter and Morse taper shank make it suitable for use in drill presses and radial drilling machines in workshops and production environments.

Key specifications

• Drill type: Core drill bit
• Material: HSS-E (high-speed steel with 5% cobalt)
• Diameter: 44.0 mm
• Shank: Morse taper MK4
• Overall length: 270 mm
• Working length: 120 mm
• Point angle: 130°
• Standard: DIN 345
• Cutting direction: Right-hand
• Surface finish: Bright (uncoated)
• Tolerance: h8

Why choose it

The cobalt-alloyed HSS-E steel provides high heat resistance and wear resistance, allowing the bit to maintain its cutting edge when drilling steel, stainless steel, cast iron, and non-ferrous metals. Ground from solid, it offers precise concentricity and a clean cutting action.

Ideal use cases

• Drilling large diameter holes in steel plates and structural sections
• Creating openings in stainless steel components
• Machining cast iron parts
• Boring holes in non-ferrous metals like aluminium and brass

Good to know

The Morse taper shank ensures a secure, self-locking fit in the machine spindle, reducing slippage under high torque. The bright finish helps with chip evacuation and corrosion resistance during storage.