RUKO SPB-DIN338-HSSCo8-Ø9,9mm spiraalboor

Twist drill bit with 9.9 mm diameter, manufactured from HSS-Co 8% cobalt high-speed steel for high heat resistance and durability in hard materials. The split point tip ensures precise centering, and the bright finish reduces friction for efficient drilling.

Advantages

Fully ground from HSS-Co 8% for high wear resistance and heat tolerance. The 135° split point eliminates the need for center punching and reduces wandering. Bright surface finish improves chip evacuation and reduces heat build-up.

Suitable for

• Stainless steel
• High-alloy steels
• Heat-resistant steels
• Cast iron
• Non-ferrous metals

Key specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-Co 8% (high-speed steel with 8% cobalt)
• Diameter: 9.9 mm
• Total length: 133 mm
• Working length: 87 mm
• Shank type: Cylindrical (straight shank)
• Point angle: 135°
• Point type: Split point (self-centering)
• Cutting direction: Right-hand cutting
• Surface finish: Bright (uncoated)
• Manufacturing process: Fully ground
• Tolerance: h8

Recommendations

Use with cutting fluid for stainless steel and high-alloy steels to extend tool life. For best results, operate at reduced speeds compared to high-speed steel bits.