Standard Products & Non-standard Customization KY TOOLS Capability
Up to 25xD Deep Hole Drill Solutions
We can provide solid carbide coolant-thru twist drills with overall length over 300mm.
Need without internal coolant drills too? See Solid Carbide Drills (3D/5D/8D).
Model & Dimensions
The table switches with the selected ratio above. Full size lists for 3D-25D can be provided on request.
Custom decimal or fractional diameters are available. MOQ is 1 piece.
| CUTTER DIAMETER (D1) h7 | LENGTH OF CUT (L2) | SHANK DIAMETER (D2) h6 | OVERALL LENGTH (L1) | PRICE | QTY | |
|---|---|---|---|---|---|---|
| mm | Inch | mm | mm | mm | USD | MOQ 1 |
Select row(s) to add them to your quote list. We provide quotation + PI within 8 hours.
Need a custom size? Add it to selected items.
Qty defaults to 1. You can use +/- or type a number directly.
KYTOOLS recommended cutting data (summary). Values are reference ranges and should be fine-tuned by machine rigidity, coolant setup, and workpiece condition.
| Dia (mm) | P (Steel) | M (Stainless) | K (Cast Iron) | N (Non-Ferrous) | ||||
|---|---|---|---|---|---|---|---|---|
| Vc (m/min) ext/int | f (mm/r) ext/int | Vc (m/min) ext/int | f (mm/r) ext/int | Vc (m/min) ext/int | f (mm/r) ext/int | Vc (m/min) ext/int | f (mm/r) ext/int | |
| 3 | 50-70 / 60-80 | 0.08-0.12 / 0.08-0.12 | 15-30 / 20-40 | 0.05-0.10 / 0.05-0.10 | 60-90 / 70-100 | 0.10-0.15 / 0.10-0.15 | 100-120 / 150-180 | 0.08-0.10 / 0.08-0.10 |
| 4 | 50-70 / 60-80 | 0.10-0.15 / 0.10-0.15 | 15-30 / 20-40 | 0.05-0.10 / 0.05-0.10 | 60-90 / 70-100 | 0.10-0.15 / 0.10-0.15 | 100-120 / 150-180 | 0.10-0.15 / 0.10-0.15 |
| 5 | 50-70 / 60-80 | 0.10-0.15 / 0.10-0.15 | 20-30 / 25-35 | 0.05-0.10 / 0.05-0.10 | 60-90 / 70-100 | 0.15-0.20 / 0.15-0.20 | 100-120 / 150-180 | 0.10-0.15 / 0.10-0.15 |
| 6 | 50-70 / 60-80 | 0.15-0.20 / 0.15-0.20 | 20-30 / 30-40 | 0.05-0.10 / 0.05-0.10 | 60-90 / 70-100 | 0.15-0.20 / 0.15-0.20 | 100-120 / 150-180 | 0.10-0.15 / 0.10-0.15 |
| 8 | 60-80 / 70-90 | 0.20-0.30 / 0.20-0.30 | 25-40 / 30-45 | 0.08-0.15 / 0.08-0.15 | 70-100 / 80-110 | 0.20-0.30 / 0.20-0.30 | 110-130 / 180-220 | 0.15-0.20 / 0.15-0.20 |
| 10 | 60-80 / 70-90 | 0.20-0.30 / 0.20-0.30 | 30-40 / 30-45 | 0.08-0.15 / 0.08-0.15 | 70-100 / 80-110 | 0.20-0.30 / 0.20-0.30 | 110-130 / 180-220 | 0.15-0.20 / 0.15-0.20 |
| 12 | 60-80 / 70-90 | 0.20-0.30 / 0.20-0.30 | 30-50 / 30-50 | 0.08-0.15 / 0.08-0.15 | 70-100 / 80-110 | 0.20-0.30 / 0.20-0.30 | 110-130 / 180-220 | 0.20-0.30 / 0.20-0.30 |
| 16 | 70-90 / 80-100 | 0.25-0.30 / 0.25-0.30 | 30-50 / 30-50 | 0.10-0.20 / 0.10-0.20 | 80-110 / 90-120 | 0.25-0.35 / 0.25-0.35 | 120-150 / 220-250 | 0.25-0.30 / 0.25-0.30 |
| 20 | 70-90 / 80-100 | 0.25-0.35 / 0.25-0.35 | 30-50 / 30-50 | 0.10-0.20 / 0.10-0.20 | 80-110 / 90-120 | 0.30-0.35 / 0.30-0.35 | 120-150 / 220-250 | 0.25-0.35 / 0.25-0.35 |
Source: KYTOOLS Standard Recommend Drill Cutting Data (EN). Units: Vc = cutting speed (m/min), f = feed per revolution (mm/r). ext = external cooling, int = internal cooling. Final parameters should be validated by machine/toolholder rigidity and coolant delivery.
ISO shaft tolerance reference for h6 and h7 ranges. Toggle units for quick conversion.
| Ø-range mm | Tolerance range mm |
|---|
| Ø-range mm | Tolerance range mm |
|---|
Reference: ISO 286-1 shaft tolerances (h6/h7).
Take a closer look
Precision engineering meets advanced cooling technology
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Internal Coolant Design+Precision-engineered internal coolant channels deliver coolant directly to the cutting edge. This advanced design ensures optimal heat dissipation and chip evacuation, significantly extending tool life and enabling higher cutting speeds. The internal channels are manufactured with micron-level precision to maintain consistent flow rates across all drill diameters.
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Enhanced Double Margin Design+The double margin geometry provides two contact points along the hole wall, delivering superior hole straightness and cylindricity — especially critical in deep hole applications. Reduced radial forces minimize tool deflection, resulting in tighter positional accuracy and a consistently clean bore surface without secondary finishing.
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Premium Carbide Material+Manufactured from ultra-fine grain carbide (submicron grain size <0.5μm) with advanced PVD coatings. The tighter grain structure delivers measurably higher transverse rupture strength and edge stability compared to standard coarse-grain carbide grades — translating to longer tool life and more consistent performance across high-volume production runs.
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Optimized Point Geometry+Multi-faceted point geometry designed for self-centering and reduced thrust forces. The specialized point angle and web thickness are optimized for each material group, ensuring minimal walk and exceptional hole accuracy. Custom geometries available for specific applications.
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Advanced Coating Technology+TiSiN Coatings are sourced through a Sandvik1-acquired coating facility in China for standard production runs, and Oerlikon Balzers6 (Switzerland) for demanding applications...
Technical Specifications
Precision-engineered for maximum performance and reliability
Depth Ratio
Capable of drilling depths up to 30 times the drill diameter, ideal for deep hole applications in aerospace and automotive industries.
Hole Accuracy
Exceptional dimensional accuracy with tight tolerances, ensuring consistent hole quality and reducing the need for secondary operations.
Hardness
Ultra-fine grain carbide substrate with Rockwell C hardness of 65, providing superior wear resistance and extended tool life.
Coating Options
Standard TiSiN via Sandvik1-acquired coating facility for production runs; nano-layer BALINIT PERTURA via Oerlikon Balzers6 (Switzerland) for demanding materials including titanium, Inconel, and hardened steels.
Point Angle
Optimized point geometry with 140° standard angle, customizable for specific material requirements and application needs.
Diameter Range
Comprehensive diameter range from 0.5mm to 25mm, covering micro-drilling to large diameter applications.
Recommended Applications
Aerospace Industry
- Deep hole drilling in titanium alloys
- Precision holes in aircraft components
- Coolant-thru drilling for heat-resistant materials
- High-precision applications with tight tolerances
Automotive Manufacturing
- Engine block drilling operations
- Transmission component machining
- High-volume production drilling
- Coolant delivery for heat management
Mold & Die Applications
- Deep hole drilling in hardened tool steels
- Coolant channel drilling in injection molds
- Precision holes in die casting molds
- Coolant-thru drilling for temperature control
- Complex geometry drilling in mold cavities
Medical Device Manufacturing
- Micro-drilling applications
- Precision holes in medical implants
- Stainless steel and titanium drilling
- High surface finish requirements
Energy Industry
- Deep hole drilling in power generation components
- Coolant channel drilling in heat exchangers
- Precision holes in turbine components
- High-temperature material drilling applications
- Oil and gas equipment manufacturing
General Machining
- Deep hole drilling operations
- Stainless steel and hardened materials
- High-speed drilling applications
- Production environments requiring extended tool life
Why Choose KY Tools
| KY TOOLS | Intl. Brands Sandvik · Gühring · Walter |
Standard Carbide Suppliers | |
|---|---|---|---|
| MOQ | 1 piece minimum order | 1–10 pcs (distributor) | Usually higher minimum order |
| Internal Coolant Channels | Precision-engineered | Standard on top-tier models | — |
| Tool Life | 20–30% longer | Benchmark performance | Standard |
| Feed Rate Capability | Higher — enabled by internal coolant | Optimised by geometry design | Limited by heat buildup |
| Depth Ratio | Up to 30×D | Up to 40×D | 5–10×D |
| Overall Length | Up to 400mm | Up to catalog depth | <200mm typical |
| Hole Accuracy | -0.010mm to -0.000mm | ±0.005–0.010mm | ±0.02–0.05mm |
| Carbide Grade | Ultra-fine grain WC | Proprietary top-grade rod | Standard grade |
| Coating Technology | TiSiN / Balinit Pertura | Zertivo™ / FIREX / Tiger·tec | Basic TiAlN / AlCrN |
| Point Geometry | 4-facet + Double Margin | 4-facet / guiding pad | Standard geometry |
| Custom Manufacturing | Full customization | Catalog; limited specials | — |
| Lead Time | 1–15 days direct | 4–8 wks (distributor) | 2–4 weeks |
| Direct Factory Price | No middleman | Distributor markup | Distributor markup |
| Technical Support | Direct from engineers | Through distributor | Through distributor |
Ready to optimize your drilling?
Get a custom quote tailored to your application
Brand Reference Notes
- 1 Sandvik is a trademark of Sandvik AB and/or its affiliates.
- 2 Guhring is a trademark of Gühring KG and/or its affiliates.
- 3 Walter is a trademark of Walter AG and/or its affiliates.
- 4 Sumitomo is a trademark of Sumitomo Electric Industries, Ltd. and/or its affiliates.
- 5 ZOLLER is a trademark of E. Zoller GmbH & Co. KG and/or its affiliates.
- 6 Balzers is a trademark used by Oerlikon Balzers and/or its affiliates.
All third-party brand names are used for identification and comparative reference only. KY TOOLS is an independent manufacturer and is not affiliated with, endorsed by, or sponsored by the trademark owners referenced above.