RUKO SPB-DIN345 42,0 mm HSS-E-Co5 kierreporanterä Morsekartiovarrellinen

For machinists and metalworking professionals drilling large-diameter holes in tough steels, the RUKO SPB-DIN345 42.0 mm HSS-E-Co5 twist drill bit delivers reliable performance in industrial settings. With a Morse taper shank and fully ground flutes, it is built for heavy-duty drilling on drill presses and radial drilling machines.

Key specifications

• Drill diameter: 42.0 mm
• Standard: DIN 345
• Material: HSS-E-Co5 (5% cobalt high-speed steel)
• Shank type: Morse taper, size MT4
• Overall length: 330 mm
• Flute length: 195 mm
• Point angle: 130°
• Surface finish: Bright
• Cutting direction: Right-hand
• Tolerance: h8

Why choose it

The cobalt-alloyed steel maintains hardness at elevated temperatures, allowing higher cutting speeds and longer tool life compared to standard HSS. The Morse taper shank ensures secure, self-locking mounting in machine spindles, reducing slippage under high torque.

Ideal use cases

• Drilling large holes in alloyed and unalloyed steels
• Machining cast iron components
• Working with non-ferrous metals and plastics
• Industrial drilling operations requiring precision and durability

Good to know

Fully ground from solid for accurate geometry and smooth chip evacuation. Suitable for use with cooling lubricants to extend tool life.