BEYOND WC20-4D-SD15-WC03 U-Drill | 15mm Indexable Insert Drill Body (4D Depth)
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BEYOND WC20-4D-SD15-WC03
Precision 4D Indexable U-Drill | 15mm Industrial CNC Tooling
High-Speed 15mm Indexable Holemaking
The BEYOND WC20-4D-SD15-WC03 is a high-rigidity indexable insert drill engineered for rapid metal removal. As a specialized fast hole U-drill, it features a 15mm cutting diameter with a 4D depth ratio, making it the definitive choice for high-speed internal cooling drilling. Optimized for heavy-duty CNC machining, it provides exceptional stability in carbon steel, alloy steel, and stainless steel.
Model Code Specification
Technical Data & Metric/Imperial Comparison
| Feature | Metric Model (mm) | Imperial Equivalent (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 15.0 mm | 0.590" |
| Shank Diameter | 20.0 mm | 0.787" |
| Max Drilling Depth (4D) | 60.0 mm | 2.362" |
Recommended Cutting Parameters
Ensure peak CNC holemaking performance with these settings:
- Cutting Speed (Vc): 100 - 180 m/min (Material dependent).
- Feed Rate (f): 0.05 - 0.12 mm/rev.
- Spindle Speed (N): $$N = \frac{Vc \times 1000}{\pi \times D}$$
- Coolant: High-pressure internal cooling is required for chip flushing and tool longevity.
Premium Material & Optimized Spiral Flute
Constructed from high-performance alloy steel with specialized vacuum quenching, this WC03 insert holder ensures maximum toughness. The optimized spiral flute geometry is designed for efficient long-chip breaking, preventing clogging during 15mm fast drilling. The nickel-plated surface prevents corrosion and ensures smooth chip flow even in gummy materials.
WC Series U-Drill: Pros & Cons
- Uses WCMX / WCMT inserts with 3 cutting edges (Economic choice).
- Stable drilling on uneven or sloped entry surfaces.
- Lower cutting resistance compared to SP series.
- Requires high-pressure coolant for 4D depths.
- Tolerance is roughly +0.1/+0.2mm; not for H7 precision bores.
Verified Customer Feedback
"Solid Build" - Marcus L. (Germany)
Great rigidity for 15mm holes. The 4D length is perfect for our blocks.
"Highly Recommend" - David H. (UK)
Fits WC03 perfectly. Better tool life than my previous supplier.
"Precision Tool" - Kenji Y. (Japan)
Excellent price-performance ratio. Very fast shipping to Tokyo.
"Fantastic Coolant Flow" - Robert P. (USA)
Internal cooling works like a charm. No heat buildup in stainless 304.
"Top Tier Body" - Luca F. (Italy)
Strong body and perfect nickel plating. Very professional tool.
Frequently Asked Questions
Q: Does this include the carbide inserts?
A: No, this is the 15mm U-drill body only. Inserts must be purchased separately.
Q: What is the benefit of the WC series?
A: WC series inserts (Trigon) offer 3 usable cutting edges, making them more cost-effective per hole.
Q: Can I use this for through-holes?
A: Yes, it is ideal for both through-holes and blind holes in CNC milling and lathe applications.
Pro-Tip: Choosing the Right Depth (2D vs 4D vs 5D)
- 2D/3D: Best for shallow holes; offers maximum rigidity and highest feed rates.
- 4D (This Model): The industrial sweet spot. Versatile for most deep-hole CNC machining needs.
- 5D: Specialized long reach drilling. Requires extreme coolant pressure to maintain hole straightness.
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.