Micro Diameter Carbide Drill Bit 1.5-3.0mm carbide end milll
HRC55 Micro Carbide Drill Bits 0.9–1.45mm carbide end milll
HRC55 Micro Carbide Drill Bits 0.7–0.89mm carbide end milll
Micro Diameter Fixed Shank Carbide Drill Bits 0.15–0.69mm carbide end milll
BEYOND Solid Carbide Micro Drill · Nano Coated · 3mm Fixed Shank
Micro Diameter Solid Carbide Drill Bits — 0.15 to 3 mm
The workhorse BEYOND micro drill family for CNC precision drilling of small holes. HRC55 ultra-fine grain carbide substrate with nano coating prevents built-up edge on stainless, alloy, copper, and aluminum. 3mm fixed shank fits standard ER collets and micro drill holders.
🟢 Trusted by small workshops, individual machinists & garage CNC users worldwide. 1 piece welcome · WhatsApp reply within 2 hours · 3–7 day global shipping via DHL / UPS / FedEx.
Diameter Range
0.15 – 3 mm
Hardness Tier
HRC55
Shank
3 mm Fixed
Coating
Nano (Al-Ti-N)
BEYOND Micro Diameter Family — 4 Diameter Tiers
All diameter tiers share the same HRC55 substrate, 3mm fixed shank, and nano coating. Diameter tier determines runout tolerance, feed profile, and which materials it can drill.
| Diameter Tier | Shank | Typical Use | Price |
|---|---|---|---|
| 0.15–0.69 mm | 3mm fixed | Sub-1mm — micro-via PCB, electronics, micro mold cooling | $35.64 |
| 0.7–0.89 mm | 3mm fixed | Micro PCB, instrument, jewelry, watch | $38.94 |
| 0.9–1.45 mm | 3mm fixed | Micro steel, electronics, micro mold cooling, watch | $38.94 |
| 1.5–3.0 mm | 3mm fixed | Micro deep hole — mold cooling, medical, instrument | $38.94 |
For Ø > 3 mm, see the full carbide drill bit family (3D / 5D / 8D series up to 20 mm).
3mm Fixed Shank — Why Fixed, Not Through-Coolant
The BEYOND micro drill series uses a 3mm fixed straight shank — the same diameter as the cutting edge for the smallest sizes. This is the standard configuration for micro drilling because:
- Maximum rigidity — fixed shank eliminates the shank-to-flute transition, reducing deflection on small diameters.
- Standard ER collet fit — works in any 3mm-capable ER collet chuck (ER8 / ER11 / ER16).
- No through-coolant needed — for Ø ≤ 3 mm and ≤ 3×D depth, external flood coolant is sufficient. Through-coolant would require a complex micro-channel design with no rigidity benefit at this scale.
- No hand-drill use — micro carbide drills need high RPM (8,000–20,000+), low runout, and rigid CNC spindle. Hand-held drills will break the drill instantly.
⚠ Critical: Use only on CNC machining centers with high-frequency spindles (≥ 8,000 RPM). Do not use with hand drills, bench drills, or low-RPM drill presses — the drill will break. For ER collet selection, see ER collet chucks (ER8 / ER11 for Ø ≤ 3 mm).
HRC55 Substrate + Nano Coating
The BEYOND micro drill series uses HRC55-grade ultra-fine grain carbide substrate with nano-scale aluminum-titanium-nitride coating (~1–2 µm thickness). The nano coating prevents built-up edge on aluminum, copper, and stainless steel — common problems for uncoated micro drills below 3 mm.
| Property | Nano Coated (this series) | Uncoated |
|---|---|---|
| Aluminum / Copper | Clean cut, no built-up edge | Built-up edge, frequent stops |
| Stainless / Alloy | Good edge retention | Rapid wear |
| Tool life | 2–3× uncoated | Baseline |
| Surface finish | Smoother | Rougher |
Cutting Parameter Quick Guide
Micro drilling requires high spindle speed and low feed. Always run at full CNC-rated RPM and use flood coolant.
| Material | Diameter | Spindle RPM | Feed f (mm/rev) |
|---|---|---|---|
| Aluminum / Copper | 0.5–3 mm | 10,000–20,000 | 0.01–0.05 |
| Stainless Steel (SUS304/316) | 0.5–3 mm | 8,000–15,000 | 0.005–0.02 |
| Alloy Steel / Tool Steel | 0.5–3 mm | 6,000–12,000 | 0.005–0.015 |
| Cast Iron | 0.5–3 mm | 10,000–18,000 | 0.01–0.04 |
| PCB / FR4 / Plastic | 0.15–1 mm | 15,000–25,000 | 0.005–0.01 |
For Individual Buyers & Small Workshops
You don't need to be a factory buyer. We ship 1 piece to your home, garage, or workshop — no MOQ, no pre-approval, no corporate paperwork. Perfect for one-off repairs, prototype work, and student projects.
💰 Volume Discounts (auto at checkout)
- 1 piece — list price ($35–$39)
- 2–9 pieces — 6% OFF
- 10+ pieces — 12% OFF
📦 Shipping & Delivery
- Shipped from Hangzhou, China
- DHL / UPS / FedEx — 3–7 days to most countries
- Tracked & insured; signature on delivery
💬 Pre-Sale Technical Support
- WhatsApp reply within 2 hours (workdays)
- Email reply same business day
- Chinese & English supported
🎓 Perfect For
- Garage CNC / hobby machinists
- Engineering students & capstone projects
- Watch / jewelry / instrument repair
- PCB prototyping & small electronics
Not sure which diameter to pick? Send us your workpiece photo + material on WhatsApp — we'll recommend a size within 2 hours.
Solid Micro Drill vs Indexable Insert Drills
For Ø ≤ 3 mm, solid carbide micro drills (this collection) are the only option — indexable insert drills have minimum diameter limits well above 3 mm. For larger diameters, switch to the indexable insert drill family. All eight siblings share the same /collections/drill parent hub.
SP Insert Drills — 55° positive trigon (stainless / aluminum / mild steel)
WC Insert Drills — 80° trigon negative rake (steel / cast iron / high MRR)
Application Spotlight
PCB Micro-Via Drilling
PCB micro-via Ø 0.15–0.69 mm at 0.5–2 mm depth. Sub-1mm tolerances require nano coating + 15,000+ RPM.
Watch & Jewelry
Watch case drilling Ø 0.7–1.45 mm on stainless 316L. Mirror-grade finish required for assembly clearances.
Instrument & Sensor Housing
Pressure sensor / flow meter housing Ø 1–3 mm on aluminum / stainless. Pair with ER collet chucks for ±0.005 mm tolerance.
Micro Mold Cooling
Small injection mold cooling lines Ø 0.5–2 mm. Use 0.5×Ø peck for stainless mold steel.
Electronics / Connector Pin
PCB connector pin drilling Ø 0.5–1.5 mm. HRC55 carbide prevents burr at exit.
For Ø > 3 mm
For diameters above 3 mm, switch to the HRC60 3D / 5D / 8D carbide drill family.
Ordering Guide by Diameter Tier
| Diameter | Recommended Series | Notes |
|---|---|---|
| 0.15–0.69 mm | Micro Diameter Fixed Shank Carbide Drill | Sub-1mm — PCB / electronics |
| 0.7–0.89 mm | HRC55 Micro Carbide Drill | Watch / jewelry / instrument |
| 0.9–1.45 mm | HRC55 Micro Carbide Drill | Micro steel, electronics |
| 1.5–3.0 mm | Micro Diameter Carbide Drill | Mold cooling, medical |
| > 3 mm | Switch to HRC60 3D / 5D / 8D | Carbide drill bits up to 20 mm |
Frequently Asked Questions
What's the smallest diameter available, and what materials can it drill?
Ø 0.15 mm is the smallest in this family. It can drill PCB, FR4, plastic, copper, aluminum, and thin stainless steel. For sub-0.15 mm work, contact BEYOND engineering on WhatsApp for custom specifications. Note: micro drills below 0.5 mm require extremely rigid CNC setup — do not attempt with hand drills or low-RPM drill presses.
What holder / collet do I need for these micro drills?
Use a precision ER collet chuck (ER8 for Ø 0.15–1 mm, ER11 for Ø 1–3 mm) or a micro drill holder. Standard 3-jaw chucks are not recommended — runout will break the drill within 2–3 holes. Hydraulic or shrink-fit chucks are the best for tool life, but ER collet is acceptable with runout < 0.005 mm.
Why can't I use these on a hand drill?
Micro carbide drills need high RPM (8,000–25,000 depending on diameter), low runout (< 0.005 mm), and rigid CNC spindle. A hand drill has runout > 0.1 mm and RPM rarely above 3,000. The drill will chip or break on the first hole, and the workpiece is likely to be damaged too. Use only on CNC machining centers, engraving machines, or high-frequency spindle setups.
📦 Do you ship to my country? How fast?
Yes — we ship globally from Hangzhou, China via DHL / UPS / FedEx. Standard transit is 3–7 business days to most countries in North America, Europe, Asia-Pacific, and the Middle East. Shipping cost is calculated at checkout based on weight and destination; tracking number is emailed within 24 hours of dispatch.
🛒 Can I order just 1 piece? Is there a minimum order?
Yes — no MOQ. Order 1 piece at $35–$39 list price, 2–9 pieces at 6% OFF (auto-discount at checkout), 10+ pieces at 12% OFF. Whether you're repairing one watch, building one prototype, or stocking a workshop, you're welcome.
↩️ What's your return / refund policy?
Unopened, unused stock can be returned within 7 days of delivery for a full refund (buyer pays return shipping). Defective or wrong items are replaced at our cost. WhatsApp us with your order number and a photo — we respond within 2 hours on workdays.
Need a Custom Micro Drill Spec or Bulk Quote?
BEYOND engineers respond same-day for micro drill specs, custom diameters, and bulk pricing for 10+ pieces (12% off). Reach our team on WhatsApp or email — we ship from Hangzhou via DHL / UPS / FedEx with 3–7 day transit to most countries.
💬 Chat on WhatsApp · +86 15990663752 Email · chao@cnchome-beyond.com
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