RUKO SPB-DIN345-30,5mm-HSS špirálový vrták s kužeľovou stopkou, 30,5 mm, HSS-E, DIN 345, MK3

The RUKO SPB-DIN345-30,5mm-HSS is a precision Morse taper shank twist drill bit engineered for demanding industrial drilling in tough materials. Unlike standard straight-shank drills, its Morse taper shank (MK3) provides a self-locking fit in machine spindles, ensuring concentricity and efficient power transmission for large-diameter holes. Manufactured from HSS-E (high-speed steel with cobalt), this drill bit offers enhanced heat resistance and wear resistance, making it suitable for alloyed and unalloyed steel, stainless steel, cast iron, non-ferrous metals, and plastics.

Highlights

• Drilling diameter: 30.5 mm with h8 tolerance for consistent hole sizing
• Morse taper shank MK3 for secure, centered mounting in compatible machines
• HSS-E (cobalt-alloyed high-speed steel) for superior hardness and heat resistance
• Fully ground from solid for precise geometry and smooth chip evacuation
• DIN 345 standard ensures dimensional accuracy and interchangeability
• Bright surface finish reduces friction and improves chip flow

In daily use

This drill bit is intended for stationary drilling machines with Morse taper spindles. The 130° point angle provides a good balance between centering and cutting efficiency in steel. The standard helix angle (25-30°) and right-hand cutting direction suit general-purpose drilling. With a total length of 305 mm and flute length of 190 mm, it offers adequate reach for deep holes while maintaining rigidity.

Full specifications

• Drill bit type: Morse taper shank twist drill bit
• Standard: DIN 345
• Material: HSS-E (high-speed steel with cobalt)
• Drilling diameter: 30.5 mm
• Shank type: Morse taper
• Morse taper size: MK3 (MT3)
• Total length (l1): 305 mm
• Flute length (l2): 190 mm
• Point angle: 130°
• Surface finish: Bright
• Tolerance: h8
• Manufacturing process: Fully ground from solid
• Helix angle: Standard (approx. 25-30°)
• Cutting direction: Right-hand cutting
• Coolant through: No
• Recommended materials: Alloyed and unalloyed steel, stainless steel, cast iron, non-ferrous metals, plastics
• Application: Industrial drilling, general purpose for tough materials
• Packaging: Single unit

Final note

For professionals requiring reliable large-diameter drilling in challenging materials, the RUKO SPB-DIN345-30,5mm-HSS delivers the precision and durability expected from a fully ground HSS-E tool.