RUKO SPB-DIN345-51.0mm-HSS Morse Taper Shank Twist Drill, 51 mm, HSS-E, MT5

For machinists and metalworking professionals drilling large-diameter holes in tough materials, the RUKO SPB-DIN345-51.0mm-HSS Morse Taper Shank Twist Drill delivers precision and durability. With a 51 mm cutting diameter and a Morse Taper MT5 shank, it fits directly into machines with Morse taper spindles, such as pillar drills and lathes.

Key specifications

• Drill bit type: Morse taper shank twist drill
• Material: HSS-E (high-speed steel with 5% cobalt)
• Standard: DIN 345
• Cutting diameter: 51.0 mm
• Shank type: Morse taper MT5
• Overall length: 480 mm
• Flute length: 260 mm
• Point angle: 118°
• Cutting direction: Right-hand cutting
• Surface finish: Bright (uncoated)
• Tolerance: h8
• Manufacturing process: Fully ground
• Recommended for: Alloyed and unalloyed steel, cast iron, non-ferrous metals, plastics, stainless steel
• Max tensile strength: Up to 1100 N/mm²
• Heat resistance: High
• Packaging: Single piece

Why choose it

The HSS-E cobalt alloy withstands high temperatures, maintaining hardness and edge retention even under heavy loads. The fully ground flutes ensure smooth chip evacuation and accurate hole sizing, while the Morse taper shank provides a secure, self-locking fit that transmits high torque without slipping.

Ideal use cases

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

Good to know

This drill bit is designed for use with machines equipped with an MT5 Morse taper spindle. It is sold as a single piece and is suitable for materials with tensile strength up to 1100 N/mm².