This high-performance carbide step drill is specifically engineered for aluminum machining, featuring internal coolant channels and a multi-diameter design to combine drilling, chamfering, and deburring in a single operation. Designed for CNC machining centers, it provides superior chip evacuation, reduced heat buildup, and extended tool life - ideal for high-volume aluminum production.

• 2-4 precision coolant holes (Ø1.0-1.5mm) for direct lubrication
• Reduces heat & prevents built-up edge (BUE) in sticky aluminum alloys

• Integrated diameter transitions (e.g., 6mm → 8mm → 10mm)
• Eliminates tool changes for drilling + chamfering in one pass

• Polished flutes minimize chip adhesion
• 3-4 flute spiral design (30°-45° helix) for smooth chip evacuation

• Micro-grain carbide (K30/K40 grade) for wear resistance
• Sub-micron grain structure ensures edge sharpness

• Balanced geometry reduces vibration at 15,000+ RPM
• h6 tolerance shank for precision collet/chuck mounting

• Heat sink mounting holes (6061/6063 aluminum)
• PCB fixture plates

• Lightweight engine blocks (A380 die-cast aluminum)
• Battery tray drilling

• Aircraft structural components (7075-T6)
• Drilling + chamfering in thin-wall parts

• Multi-diameter holes in aluminum extrusions
• Deburring soft alloy castings

• Advanced grinding machines: All of our grinding machines are WALTER and SAACKE brands
• Advanced inspection machines: We have ZOLLER, OMEGA, PG1000 for inspecting each carbide tool
• Fast feedback: 24 hours online service
• Strict quality control system: Three-stage inspection process (raw material, semi-finished product, final coated product)