Tungsten Carbide Twist Drill for CNC Machine Tools Micro Drill Bit

Product Description

Product Description

micro drill

Our solid carbide micro drills are precision cutting tools specially engineered for ultra-small hole machining in electronics, medical devices, precision molds and automotive miniature components. Manufactured from ultra-fine grain tungsten carbide substrate, the drills deliver superior hardness, rigidity and wear resistance compared with high-speed steel micro drills, enabling stable machining of tiny holes ranging from 0.05mm to 3.0mm in diameter.
Adopting optimized ultra-sharp point geometry and customized spiral flute design, these micro drills effectively reduce cutting resistance and chip clogging during deep-hole drilling. The polished flute surface ensures smooth chip evacuation, while balanced core thickness enhances tool straightness to prevent bending or breakage under high spindle speed. Multiple coating options are available, including TiN, TiAlN and diamond coating, which drastically lower friction, resist high-temperature oxidation and extend service life when processing copper, aluminum alloy, stainless steel, FR4 circuit boards, graphite and hardened steel.
Strict micron-level dimensional inspection is implemented throughout production. Each tool maintains tight tolerance on diameter, concentricity and point angle, guaranteeing consistent hole roundness and smooth inner wall without burrs. Internal coolant hole versions are optional for deep-hole micro-drilling, efficiently cooling cutting edges and removing tiny metal chips to improve machining accuracy.
Suitable for high-speed CNC machining centers and PCB drilling machines, our carbide micro drills support mass precision production with low tool replacement frequency. Customization of special lengths, step diameters and coating formulas is acceptable to match unique workpiece requirements. Reliable performance, stable dimensional repeatability and cost-effective long service life make our micro drills the ideal choice for high-precision micro-hole processing industries worldwide.

FAQ

FAQ

Q1: What material are your carbide micro drills made of?
A1: They are made of high-quality solid tungsten carbide, with good hardness and wear resistance.

Q2: What diameter range do your micro drills support?
A2: Our carbide micro drill covers ultra-small diameter from 0.1mm to 3.0mm, custom diameters are available.

Q3: Can you provide coated micro drills? What coatings are optional?
A3: Yes. We offer TiN, TiAlN and DLC coatings to improve tool life. Uncoated versions are also available.

Q4: What materials can these micro drills process?
A4: Suitable for PCB, copper, aluminum, stainless steel, mold steel and other hard or thin-wall materials.

Q5: Do you accept custom-made micro drills?
A5: Yes. We can customize shank size, flute length, overall length, point angle and special coating according to your drawings or samples.

Q6: What is your MOQ for carbide micro drills?
A6: Stock items support small-order trial. Custom made items have a negotiable minimum order quantity based on specifications.

Q7: What tolerance can you guarantee for drill diameter?
A7: Standard diameter tolerance is ±0.005mm, tighter tolerance can be done for customized requirements.

Q8: How about the delivery time?
A8: Stock goods ship within 3-7 working days. Custom micro drills take 10-20 working days according to complexity.

Descripion	Solid Carbide Drill Bits
Workpiece Material	General Steel/Stainless Steel/Titanium Alloy/Alumi
Advantages	High Precision/Longer Tool Life/Anti-Vibration
Production Machine	5 Axis CNC Machine