16-20mm 3xD Carbide Coolant Through Drills carbide end milll
14-15.9mm 3xD Carbide Coolant Through Drills carbide end milll
12-13.9mm 3xD Carbide Coolant Through Drills carbide end milll
10-11.9mm 3xD Carbide Coolant Through Drills carbide end milll
8-9.9mm 3xD Carbide Coolant Through Drills carbide end milll
6-7.9mm 3xD Carbide Coolant Through Drills carbide end milll
3-5.9mm 3xD Coolant Through Carbide Drill Bits carbide end milll
2-2.9mm 3xD Coolant Through Carbide Drill Bits carbide end milll
BEYOND Solid Carbide 3D Drill · Internal Coolant · Through-Shank
HRC60 Internal Coolant 3D Carbide Drill Bit — Structural Steel & Stainless
The workhorse BEYOND HRC60 3D drill family with DIN 69090-3 through-coolant shank. Integrated coolant channels deliver high-pressure fluid directly to the cutting edge, enabling reliable 3×D deep-hole drilling in structural steel, stainless steel, alloy, and hardened steel up to HRC65.
🟢 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.
Flute Length
3 × D
Point Angle
140°
Diameter Range
2 – 20 mm
Coolant Pressure
7 – 15 bar
BEYOND Internal Coolant 3D Family — 8 Diameter Tiers
All diameter tiers share the same 3×D flute length ratio, 140° point angle, DIN 69090-3 through-coolant shank, and HRC60 carbide substrate. Diameter tier determines price, rigidity, and required coolant pressure.
| Diameter Tier | Flute Length | Coolant Pressure | Typical Use |
|---|---|---|---|
| 2.0–2.9 mm | 3×Ø | 7–10 bar | Micro deep hole — electronics, instrument, micro mold cooling |
| 3.0–5.9 mm | 3×Ø | 8–12 bar | Precision deep hole — medical implant, mold cooling channels |
| 6.0–7.9 mm | 3×Ø | 10–12 bar | Mid deep hole — aerospace brackets, valve bodies |
| 8.0–9.9 mm | 3×Ø | 11–13 bar | Heavy deep hole — mold ejector, hydraulic manifold |
| 10.0–11.9 mm | 3×Ø | 12–14 bar | Industrial deep hole — large mold, transmission |
| 12.0–13.9 mm | 3×Ø | 13–15 bar | Heavy industrial deep hole — large mold core |
| 14.0–15.9 mm | 3×Ø | 14–15 bar | Heavy industrial — mold base / die set |
| 16.0–20.0 mm | 3×Ø | 15 bar | Extreme deep hole — large mold, structural fabrication |
Why 3×D Is the Workhorse Deep-Hole Length
3×D (3×Ø) covers 80% of CNC drilling tasks: it reaches far enough for structural components, mold cooling channels, and valve body cavities, but stays short enough to run reliably on a standard ER collet chuck with flood coolant. For deeper, you escalate to 5D or 8D.
| Depth | Coolant | Holder | Peck Cycle |
|---|---|---|---|
| 3×D (this series) | 7–15 bar through-coolant | ER collet (sealed) or hydraulic | 1×Ø retract OK; 0.5×Ø for stainless / Ti |
| 5×D | 10–20 bar through-coolant | Hydraulic or shrink-fit | 0.5–1.0×Ø retract |
| 8D+ Saber | 15–40 bar through-coolant | Hydraulic or shrink-fit only | 0.2–0.3×Ø retract + dedicated cycle |
For 5×D and 8D depth, see the BEYOND 5D / 12D Saber Tooth families.
Through-Coolant vs External Coolant
For 3×D drilling on stainless / titanium / hardened steel, external flood coolant is insufficient — chips clog the flutes before they can evacuate, cutting edge heat exceeds 600°C, and tool life collapses. Through-coolant channels high-pressure fluid through sealed channels in the shank and drill body, delivering coolant directly to the cutting edge at 7–15 bar.
Through-Coolant (this series)
- 7–15 bar pressure at cutting edge
- Reduces edge temperature by up to 50%
- 2–5× longer tool life vs external
- Compatible with DIN 69090-3 sealed holders
External Coolant (Not Recommended)
- Chips clog at depth on stainless / Ti
- Edge heat exceeds coating limit
- Drill breakage risk
- OK only for shallow holes on carbon steel
DIN 69090-3 D-Type Shank Compatibility
All BEYOND HRC60 Internal Coolant 3D drills use the DIN 69090-3 D-Type shank — the standard for through-coolant drilling on machining centers. The shank has a sealed coolant channel that mates with sealed tool holders, maintaining pressure from the spindle through the drill body to the cutting edge.
Compatible holders:
- ER collet chuck (DIN 6499 / ISO 15488) with sealed nut — see ER collet chucks collection
- Hydraulic chuck with sealed coolant supply (best for Ø 6 mm+)
- Shrink-fit chuck with sealed holder (premium rigidity for heavy deep hole)
⚠ Critical: Standard ER collets without sealed nut will leak coolant at the collet/nut interface. Use only sealed-nut ER collets or hydraulic chucks with through-coolant for the BEYOND Internal Coolant 3D series.
Cutting Parameter Quick Guide
Starting recommendations for the BEYOND HRC60 Internal Coolant 3D series. Through-coolant is mandatory.
| Material | Hardness | Vc (m/min) | Feed f (mm/rev) | Coolant |
|---|---|---|---|---|
| Carbon Steel (≤1500 N/mm²) | HRC60 | 80–120 | 0.10–0.24 | 10–15 bar |
| Alloy Steel / Tool Steel | HRC55 | 30–60 | 0.06–0.16 | 12–15 bar |
| Stainless Steel (SUS304–SUS420) | HRC60 | 40–80 | 0.08–0.18 | 12–15 bar |
| Titanium 6Al-4V | HRC60 | 30–50 | 0.06–0.12 | 15 bar |
| Hardened Steel (≤HRC65) | HRC65 | 50–80 | 0.04–0.10 | 15 bar |
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.
💰 Volume Discounts (auto at checkout)
- 1 piece — list price
- 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
- Small prototype & R&D shops
- Repair & one-off job shops
Not sure which diameter to pick? Send us your workpiece photo + material on WhatsApp — we'll recommend a size within 2 hours.
Solid 3D vs Indexable Insert 3D Drills
Solid carbide internal-coolant 3D (this collection) wins on rigidity and small-diameter precision (≤ Ø 20 mm). When hole diameter exceeds 20 mm or you need indexable economics, switch to the indexable insert drill family below. 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
Structural Steel Frames
3D deep holes on carbon steel structural members Ø 6–16 mm at 30–60 mm depth. Standard workhorse application.
Mold Cooling Channels
Injection mold cooling lines Ø 4–10 mm at 20–50 mm. Through-coolant essential for surface finish.
Stainless Valve Bodies
316 stainless valve deep cavities Ø 6–14 mm. Through-coolant prevents work hardening.
Automotive Transmission
Cast iron transmission cases Ø 8–16 mm at 30–50 mm. Pair with corn mill for cross-pass.
Hobby / Garage CNC
DIY aluminum / steel brackets for home workshops. Order 1 piece, no MOQ, ships in 3–7 days.
Long Reach >3D
Beyond 3×D depth, switch to 12D Saber Tooth with internal coolant + dedicated peck cycle.
Ordering Guide by Diameter Tier
| Diameter | Coolant Pressure | Notes |
|---|---|---|
| 2.0–2.9 mm | 7–10 bar | Micro deep hole — frequent peck 0.3×Ø |
| 3.0–5.9 mm | 8–12 bar | Mold cooling, medical implant |
| 6.0–7.9 mm | 10–12 bar | Aerospace, valve bodies |
| 8.0–9.9 mm | 11–13 bar | Mold ejector, hydraulic |
| 10.0–11.9 mm | 12–14 bar | Industrial deep hole |
| 12.0–13.9 mm | 13–15 bar | Heavy industrial — large mold core |
| 14.0–15.9 mm | 14–15 bar | Heavy industrial — mold base |
| 16.0–20.0 mm | 15 bar | Extreme deep hole — hydraulic chuck mandatory |
| > 20 mm | Switch to WC 3D-carbide or WC 5D | Insert economics beat solid carbide ≥ Ø20 mm |
Frequently Asked Questions
What's the difference between 3D, 5D, and 8D drill depth?
The number is the depth-to-diameter ratio. 3D (this collection) reaches 3×Ø depth — covers ~80% of CNC drilling tasks. 5D reaches 5×Ø — needs higher coolant pressure and rigidity. 8D+ reaches 8×Ø or more — requires the BEYOND 12D Saber Tooth with dedicated peck cycle. For deep holes beyond 3D, escalate to the 5D family, not 8D.
What holder / chuck do I need for the internal-coolant feature?
You need a DIN 69090-3 sealed holder — sealed-nut ER collet chuck (DIN 6499 / ISO 15488), hydraulic chuck with sealed coolant supply, or shrink-fit chuck with sealed holder. Standard ER collets without sealed nut will leak coolant at the collet/nut interface — defeating the internal-coolant feature.
Can the 3D internal-coolant drill run dry or with MQL?
Not recommended — the integrated coolant channels are designed for 7–15 bar through-coolant. For dry / MQL applications on aluminum or cast iron, see the straight-shank HRC60 3D variants without internal coolant (separate BEYOND family).
📦 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 list price, 2–9 pieces at 6% OFF (auto-discount at checkout), 10+ pieces at 12% OFF. Whether you're a hobby machinist with one bracket to drill or a manufacturer with 500, 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 Drill Spec or Bulk Quote?
BEYOND engineers respond same-day for diameter recommendations, holder pairings, 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
Related guides: CNMG 120408-PM 8-Brand Grade Matrix · Custom CNC Speeds & Feeds Chart · Small-Hole Boring Tips