RUKO SPB-DIN338-HSSCo8-TiAlN-Ø9,1mm kierrepora

The RUKO SPB-DIN338-HSSCo8-TiAlN-Ø9.1mm twist drill bit is engineered for demanding drilling in high-alloy steels, stainless steel, cast iron, bronze, and hard plastics. Its 8% cobalt high-speed steel body withstands high thermal loads, while the TiAlN coating reduces friction and increases heat resistance up to 600°C. The split point tip ensures precise centering and reduces walking, making it a reliable choice for professional metalworking.

Highlights

• HSS-Co 8% with TiAlN coating for extended tool life
• Split point (DIN 1412 C) for accurate starting without center punch
• 135° point angle optimized for hard materials
• DIN 338 standard dimensions: 125 mm overall length, 81 mm flute length
• Cylindrical shank with h8 tolerance for secure chucking

In daily use

This drill bit delivers clean, precise holes in tough materials. The TiAlN coating reduces heat buildup, allowing higher cutting speeds and longer intervals between regrinds. The split point design minimizes thrust pressure, improving control and hole quality. Suitable for use in stationary drilling machines and powerful hand drills with proper clamping.

Full specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-Co 8% (high-speed steel with 8% cobalt)
• Coating: TiAlN (Titanium Aluminum Nitride)
• Diameter: 9.1 mm
• Shank type: Cylindrical
• Point angle: 135°
• Point type: Split point (DIN 1412 C)
• Helix angle: Type N (normal)
• Cutting direction: Right-hand cut
• Overall length (l1): 125 mm
• Flute length (l2): 81 mm
• Tolerance: h8
• Manufacturing process: Ground from solid
• Recommended application: High-alloy steels, stainless steel, cast iron, bronze, hard plastics
• Heat resistance: Up to 600°C
• Colour: Bronze/Grey
• Packaging quantity: 1 piece

Final note

A professional-grade drill bit for tough materials, combining cobalt steel toughness with a high-performance TiAlN coating.