RUKO SPB-DIN338-HSSCo8-Ø9,1mm HSS-Co8 kierrepora

Twist drill bit with 9.1 mm diameter, made from high-speed steel with 8% cobalt for excellent heat resistance and durability. Ideal for drilling stainless steel, acid-resistant steel, heat-resistant steel, high-alloy steels, cast iron, bronze, and hard plastics with tensile strength up to 1100 N/mm².

Advantages

Split point design ensures self-centering and reduces walking. Fully ground flutes provide efficient chip removal and precise holes. Bright/steam tempered surface enhances wear resistance.

Suitable for

• Stainless steel
• Acid-resistant steel
• Heat-resistant steel
• High-alloy steels
• Cast iron
• Bronze
• Hard plastics

Key specifications

• Diameter: 9.1 mm
• Overall length: 125 mm
• Flute length: 81 mm
• Point angle: 135°
• Shank type: Cylindrical
• Cutting direction: Right hand
• Tolerance: h8
• Standard: DIN 338

Recommendations

Use with cutting fluid for best results in tough materials. Suitable for machine tools and hand drills.