RUKO DIN 345 HSS-G morse-taper spiraalboor 39,5 mm

Machinists and metalworkers requiring a large-diameter twist drill for stationary drilling machines, lathes, or milling machines will find the RUKO DIN 345 HSS-G Morse Taper Drill Bit 39.5 mm a reliable choice. Its Morse taper shank (MT4) ensures secure and concentric mounting in the machine spindle, enabling precise drilling in steel, cast iron, non-ferrous metals, and plastics.

Key specifications

• Drill bit type: Twist drill bit
• Standard: DIN 345
• Material: HSS-G (high-speed steel, ground)
• Drill diameter: 39.5 mm
• Shank type: Morse taper shank (MT4)
• Point angle: 118°
• Surface finish: Bright
• Cutting direction: Right-hand cut
• Overall length: 365 mm
• Flute length: 215 mm
• Tolerance: h8
• Manufacturing process: Ground flutes

Why choose it

The ground flutes and precise h8 tolerance deliver accurate holes and smooth chip evacuation. The HSS-G material offers a good balance of hardness and toughness, suitable for general-purpose drilling in a range of materials. The Morse taper shank allows quick tool changes and reliable torque transmission.

Ideal use cases

• Creating large-diameter holes in steel plates or structural components
• Drilling cast iron or non-ferrous metals in maintenance and repair workshops
• Preparing holes for subsequent reaming or tapping operations
• Use in toolrooms and production environments with stationary drilling machines

Good to know

This drill bit is supplied as a single unit. It is intended for use with suitable cutting fluid and appropriate speeds and feeds for the workpiece material.