RUKO SPB-DIN1897-HSSCo-Ø4,9mm broca curta

This RUKO stub drill bit is engineered for precise, stable drilling in tough materials. Unlike standard jobber drills, its short flute design and increased core thickness reduce deflection, making it ideal for spot drilling and shallow holes in steel, stainless steel, and cast iron.

Highlights

• HSS-Co cobalt alloy with 5% cobalt for high heat resistance and hardness
• Fully ground from solid for excellent chip removal and accuracy
• 130° point angle for self-centering and reduced walking
• h8 shank tolerance for secure chucking

In daily use

With a working length of 29 mm and a total length of 57 mm, this stub drill is perfect for machine shops and maintenance tasks where rigidity matters. The bright finish reduces friction, and the right-hand cutting geometry ensures clean holes in a variety of metals and plastics.

Full specifications

• Material: HSS-Co (5% cobalt)
• Standard: DIN 1897
• Drill bit diameter: 4.9 mm
• Shank type: Cylindrical
• Point angle: 130°
• Flute type: Right-hand cutting
• Surface finish: Bright
• Manufacturing process: Fully ground
• Total length: 57 mm
• Working length: 29 mm
• Tolerance: h8
• Number of pieces: 1
• Drill bit type: Stub drill bit
• Recommended material hardness: Up to 1100 N/mm²

Final note

For professionals who demand precision and durability in short-hole drilling, the RUKO SPB-DIN1897-HSSCo-Ø4.9mm delivers consistent performance.