UPX Series 0.3-3.95mm Carbide Precision Drill Bits with 4mm Shank ±0.005mm Medical Mold

The UPX Series 4.0mm Shank High Precision Carbide Micro Drills are engineered for demanding      micro hole drilling applications that require exceptional rigidity, accuracy, and surface quality.      The fixed shank design with a shank diameter larger than the cutting diameter significantly      enhances bending resistance and torque stability, making these drills ideal for high-load micro machining.

With cutting diameters from 0.3mm to 3.95mm in precise 0.05mm increments and a tolerance of      ±0.005mm, these tools are widely used in      medical devices, precision molds, and aerospace micro-hole development.      The combination of sub-micron carbide substrate and TiAlN coating      delivers mirror-like hole surfaces even when machining titanium alloys, mold steel, and stainless steel.

• Shank Diameter: 4.0mm (fixed shank, larger than cutting diameter)

• Cutting Diameter Range: 0.3–3.95mm

• Diameter Increment: 0.05mm per size (73 sizes total)

• Diameter Tolerance: ±0.005mm

• Point Angle: 118°

• Material: Sub-micron solid carbide

• Coating: TiAlN (high heat and wear resistance)

• Recommended Tool Holders: Shrink-fit / Hydraulic chuck

• Medical instruments and implant components

• Precision mold and die micro-hole machining

• Aerospace micro components and cooling holes

• Titanium alloy and stainless steel micro drilling

• High-precision CNC machining centers

• Extreme rigidity for high-torque micro machining

• Superior hole finish with minimal burr formation

• Up to 6× longer tool life when machining titanium alloys

• Stable performance in deep and high-aspect-ratio micro holes

• 95% repeat purchase rate from mold and medical manufacturers