PCB Micro Drill Bits for Cleaner Holes, Longer Tool Life, and More Stable High-Speed Drilling
Sub-micron carbide PCB drill bits for FR-4, high-Tg, halogen-free, IC substrate, PTFE, and metal-core applications, with support for micro diameters, coating options, and repeatable production quality.
Talk on WhatsApp
Key Features & Benefits
Discover why our products are trusted by industries worldwide
Micro-hole capability for HDI production
Diameter range from 0.10 mm to 6.50 mm, with the highest technical value concentrated in micro drills below 0.40 mm for dense interconnect structures.
Sub-micron carbide for abrasive laminates
Ultra-fine WC-Co carbide helps balance wear resistance and toughness when drilling glass-fiber-reinforced PCB materials such as FR-4 and high-Tg laminates.
Geometry built for cleaner entry and exit
Optimized 130° to 140° point geometry, reduced chisel edge, and controlled flute design help reduce thrust force, burr risk, and unstable hole formation.
Coating options matched to board material
TiN, TiAlN, and DLC options are available for different drilling conditions, including halogen-free, high-speed, and high-frequency material systems.
Rigidity for high spindle speed
Standard 3.175 mm shank with shank-diameter-greater-than-cutting-diameter design improves stability when machines run at 80,000 to 350,000 RPM.
Lower breakage and more predictable hole quality
Consistent diameter, runout control, and optical inspection help buyers reduce breakage risk while maintaining more stable hole size and wall quality.
Technical Specifications
Detailed parameters for your engineering requirements
| Material | Sub-Micron WC-Co Tungsten Carbide |
| Diameter Range | 0.10 mm - 6.50 mm |
| Core Micro-Drill Range | < 0.40 mm |
| Shank Diameter | 3.175 mm Standard |
| Point Angle | 130° - 140° |
| Typical Speed Window | 80,000 - 350,000 RPM |
| Coating Options | Uncoated / TiN / TiAlN / DLC |
| Target Materials | FR-4 / High-Tg / Halogen-Free / PTFE / IC Substrate / Metal Core |
Application Areas
Versatile solutions across multiple industries
FR-4 and standard multilayer drilling
A strong fit for general PCB factories that need dependable via drilling, through-hole production, and lower consumable volatility on abrasive glass-fiber boards.
HDI and IC substrate micro drilling
Designed for tighter hole demands, smaller diameters, and higher consistency expectations where breakage and hole-wall quality directly affect yield.
High-frequency and special laminate drilling
Special geometry and coating combinations can be aligned to PTFE, ceramic-filled, halogen-free, and other demanding materials used in RF and high-speed boards.
Metal-core and composite board structures
Suitable for applications where the drill must pass through composite material stacks that challenge tool wear, chip evacuation, and dimensional stability.
Product Gallery
Explore our precision-engineered materials and components.
Why buyers replace their current PCB drill supplier
PCB factories rarely change drill suppliers because of catalog wording. They change when hole quality becomes unstable, tool life drops too quickly, or breakage interrupts throughput.
Our PCB micro drill bits are built around those exact commercial pain points: cleaner holes, better wear behavior on abrasive glass fiber, and more predictable performance at high spindle speed. This helps buyers protect both drilling quality and total cost per hole.
What matters in high-speed PCB drilling
The product is small, but the performance window is unforgiving.
- Micro diameters need higher rigidity and stronger concentricity control
- Abrasive laminates rapidly wear poor carbide grades
- Hole-wall quality, burrs, and nail-head defects affect downstream process stability
- Breakage rate directly affects line efficiency and consumable cost
- Coating and flute choices need to match both laminate type and machine condition
Manufacturing and inspection built for repeat orders
Our drill bit process is organized around repeatability, not just first-sample appearance.
- Powder metallurgy for dense, fine-grain carbide substrate formation
- Precision CNC grinding for point geometry, flute shape, and edge quality
- Optional coating routes for TiN, TiAlN, or DLC depending on material and life target
- 100% optical inspection on geometry, edge condition, and dimensional consistency
- Production logic suited to both standard sizes and custom specification programs
RFQ guide for faster drill recommendation and quotation
To quote PCB drill bits accurately, please send the points that most affect tool selection and expected life.
- Diameter range or exact drill list by size
- Flute length and overall length requirement
- Board material type such as FR-4, high-Tg, halogen-free, PTFE, IC substrate, or metal core
- Coating preference if already specified
- Monthly or annual usage by size
- Machine speed range and any hole-quality problem you are trying to improve
- Packaging, regrind, or custom labeling requirements if relevant
Need a PCB drill quote that matches your real drilling conditions?
Send your drill list, board material, machine speed, and usage volume. We can recommend a more practical carbide grade, geometry, and coating route for your production target.