RUKO SPB-DIN338-HSSCo8-TiAlN-Ø8.4mm Jobber Drill Bit

Drilling into high-alloy steels, stainless steel, cast iron, and heat-resistant steels demands a drill bit that can withstand extreme heat and wear without losing its edge. The RUKO SPB-DIN338-HSSCo8-TiAlN-Ø8.4mm jobber drill bit is engineered for exactly these challenging materials, offering high-performance drilling in demanding applications.

Who is it for

This drill bit is ideal for metalworking professionals and serious DIYers who regularly work with tough materials. It suits machinists, maintenance technicians, and fabricators who need reliable, long-lasting tooling for corded drills, cordless drills, and drill presses.

Main features

• Made from HSS-Co8 high-speed steel with 8% cobalt for excellent heat resistance and wear resistance.
• TiAlN (Titanium Aluminum Nitride) coating further enhances hardness and thermal stability, extending tool life.
• 135° split point provides self-centering and reduces walking, allowing accurate hole placement without a center punch.
• Ground from solid for precise geometry and consistent performance.
• Conforms to DIN 338 standards for jobber length and cylindrical shank.
• Right-hand cutting direction for standard drilling operations.

Specifications

• Drill bit type: Jobber drill bit (twist drill)
• Diameter: 8.4 mm
• Overall length: 117 mm
• Working length (flute length): 75 mm
• Shank type: Cylindrical
• Point angle: 135°
• Point type: Split point
• Material: HSS-Co8
• Coating: TiAlN
• Cutting direction: Right-hand
• Manufacturing process: Ground from solid
• Packaging quantity: 1 piece

Tips

Use appropriate cutting fluid when drilling stainless or heat-resistant steels to maximize tool life. Ensure the drill bit is securely chucked and the workpiece is clamped to prevent movement. For deep holes, retract periodically to clear chips and reduce heat buildup.