RUKO Broca helicoidal curta DIN 1897 HSS-Co 2,5 mm

Precision stub drill bit with 5% cobalt high-speed steel and 135° split point for self-centering starts in tough materials.

Overview

The RUKO SPB-DIN1897-HSSCo-Ø2,5mm is a professional stub drill bit engineered to DIN 1897 standards. Its short overall length of 49 mm provides exceptional rigidity, making it ideal for precise drilling in tight spaces and for applications requiring high positional accuracy.

What stands out

• 5% cobalt alloyed HSS-Co steel for high heat and wear resistance
• 135° split point eliminates walking and reduces thrust pressure
• Fully ground flutes and bright finish ensure smooth chip evacuation
• Cylindrical shank with h8 tolerance for secure chuck grip
• Versatile across alloyed steel, stainless steel, cast iron, non-ferrous metals, and plastics

Technical details

• Drill bit type: Stub drill bit
• Standard: DIN 1897
• Material: HSS-Co (5% cobalt)
• Diameter: 2.5 mm
• Overall length (l1): 49 mm
• Flute length (l2): 18 mm
• Shank type: Cylindrical
• Shank diameter: 2.5 mm
• Point angle: 135°
• Point grind: Split point
• Tolerance: h8
• Manufacturing process: Fully ground
• Surface finish: Bright
• Direction of cut: Right-hand cutting
• Packaging: Single piece

Our verdict

A compact, high-performance stub drill for precision work in hard materials, backed by RUKO's engineering quality.