RUKO SPB-DIN345-41.5mm-HSS Morse Taper Shank Twist Drill Bit

Machinists and metalworking professionals rely on this twist drill bit for creating precise 41.5 mm holes in tough materials. It is used on pillar drills, lathes, and milling machines equipped with a Morse taper holder.

Key specifications

• Material: HSS-E Co 5 (high-speed steel with 5% cobalt)
• Standard: DIN 345
• Drill bit type: Twist drill bit
• Shank type: Morse taper shank, size MT4
• Diameter: 41.5 mm
• Total length: 380 mm
• Cutting length: 230 mm
• Point angle: 130°
• Flute type: Standard spiral flute
• Surface finish: Bright / uncoated
• Manufacturing process: Ground from solid
• Tolerance: h8
• Direction of cut: Right-hand

Why choose it

The 5% cobalt content provides excellent heat resistance, allowing the bit to maintain hardness at elevated temperatures. This makes it suitable for drilling high-alloy steels, stainless steels, cast iron, non-ferrous metals, and plastics.

Ideal use cases

• Creating large-diameter holes in structural steel components
• Drilling stainless steel plates in fabrication shops
• Machining cast iron parts in maintenance and repair
• Producing holes in non-ferrous metals and plastics

Good to know

This bit is ground from solid HSS-E Co 5, ensuring consistent geometry and long tool life. It is designed for use with Morse taper MT4 holders, providing secure clamping and accurate centering.