BEYOND WC25-2D-SD16.5-WC03 Indexable U-Drill | 16.5mm CNC Fast Drill
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BEYOND WC25-2D-SD16.5-WC03
Industrial 16.5mm 2D Indexable U-Drill | High-Performance CNC Boring Body
Precision 16.5mm Indexable Fast Hole Drilling
The BEYOND WC25-2D-SD16.5-WC03 is a professional-grade indexable insert drill engineered for rapid material removal. As a specialized fast hole U-drill, it offers a 16.5mm cutting diameter with a 2D depth ratio. This internal cooling drill is perfect for CNC lathe metal boring, ensuring smooth chip evacuation and long tool life in carbon steel, alloy steel, and stainless steel applications.
Model Code Specification Breakdown
Technical Data & Metric/Imperial Comparison
| Feature | Metric Model (mm) | Imperial Equivalent (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 16.5 mm | ~0.650" |
| Shank Diameter | 25.0 mm | 0.984" |
| Max Drilling Depth (2D) | 33.0 mm | 1.299" |
| Product Model | WC25-2D-SD16.5 | WC0.98-2D-SD0.65 |
Advanced 20CrMnTi Alloy & Spiral Flute Design
Superior Material Composition: The body is forged from 20CrMnTi industrial-grade alloy steel. This material undergoes advanced vacuum quenching, resulting in a high surface hardness and an incredibly tough core. It is engineered to resist the high-torque demands of CNC metal boring without vibration or deformation.
Optimized Spiral Flute (U-Groove): Features an enlarged spiral flute designed for rapid chip evacuation. The precision U-groove flute geometry prevents chip packing and heat buildup by utilizing dual internal cooling holes, which flush out metal chips instantly during shallow hole drilling.
Recommended Cutting Parameters
Optimize your 16.5mm U-drill performance with these baseline settings:
- Cutting Speed (Vc): 110 - 190 m/min (Depending on material).
- Feed Rate (f): 0.05 - 0.12 mm/rev.
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 16.5}$$
- Mandatory: Internal cooling is essential for chip flushing and tool life.
WC Type U-Drill: Advantages & Considerations
- Uses WC series inserts (Trigon style) with 3 cutting edges (Economic).
- Exceptional stability on uneven or curved entry surfaces.
- Lower spindle load compared to square-insert drills.
- Roughing tool; hole tolerance typically (+0.1 / -0.2mm).
- Requires stable high-pressure internal coolant pump.
Verified Customer Feedback
"Solid Rigid Body"
"Used it on my DMG Mori lathe for 4140 steel. Minimal vibration and the 16.5mm size is spot on."
- Klaus H. (Germany)"Excellent value"
"Great performance for the price. Fast shipping to the US."
- Robert M. (USA)"Good chip breaking"
"Internal cooling works perfectly. No chip packing issues."
- Hiroshi T. (Japan)"Highly recommended"
- Luca F. (Italy)
"Reliable Tool"
- Pierre G. (France)
Expert Q&A
Q: Does this include the Torx wrench and screws?
A: Yes, each BEYOND drill body includes the necessary insert screws and the correct Torx wrench.
Q: Can I use this for blind holes?
A: Yes. The WC U-drill provides a relatively flat bottom, perfect for blind hole boring in CNC operations.
Q: Is internal cooling mandatory?
A: Yes. To ensure the 16.5mm diameter clears chips effectively, internal coolant is essential.
Quick Tip: 2D-5D CNC Drill Selection
Choosing the right depth is crucial. 2D drills (like this SD16.5 model) offer maximum rigidity and are best for high-feed roughing. 3D to 5D drills allow for deeper holes but require significantly higher coolant pressure and reduced feed rates to avoid tool deflection.
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.