BEYOND WC20-2D-SD16.5-WC03 Indexable U-Drill | 16.5mm CNC Fast Hole Drill Body
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BEYOND WC20-2D-SD16.5-WC03
High-Precision 16.5mm 2D Indexable U-Drill | CNC Fast Hole Boring Body
Rapid 16.5mm Indexable Metal Drilling
The BEYOND WC20-2D-SD16.5-WC03 is a high-performance indexable insert drill designed for heavy-duty material removal in modern CNC machining. As a specialized fast hole U-drill, it features a 16.5mm cutting diameter with a 2D depth ratio and a 20mm shank. This internal cooling drill is optimized for CNC lathe metal boring, ensuring exceptional chip evacuation and stability during high-speed drilling of carbon steel and stainless steel.
Model Code Specification Breakdown
Technical Data & Metric/Imperial Conversion
| Feature | Metric Model (mm) | Imperial Equivalent (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 16.5 mm | 0.6496" |
| Shank Diameter | 20.0 mm | 0.7874" |
| Max Drilling Depth (2D) | 33.0 mm | 1.2992" |
| Product Model | WC20-2D-SD16.5 | WC0.78-2D-SD0.65 |
20CrMnTi Alloy Steel & Precision Spiral Flute
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 high-torque without vibration during shallow hole drilling.
Advanced Spiral Flute Geometry: The spiral U-slot is designed with an enlarged capacity for rapid chip evacuation. This chip-breaker flute design, combined with pressurized internal coolant holes, ensures that metal waste is ejected instantly, preventing tool damage.
Recommended Cutting Parameters
Baseline settings for the 16.5mm U-drill (Vary by workpiece material):
- Cutting Speed (Vc): 110 - 180 m/min.
- Feed Rate (f): 0.05 - 0.12 mm/rev.
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 16.5}$$
- Mandatory: Constant internal cooling is required to protect carbide inserts.
WC Type U-Drill: Pros and Cons
- Uses WC series inserts with 3 cutting edges for extreme cost-efficiency.
- Exceptional stability on uneven or curved entry surfaces.
- Lower spindle load compared to square-insert drills.
- Roughing tolerance typically (+0.1 / -0.2mm).
- Requires high-pressure coolant for optimal chip flushing.
Customer Feedback
"Strong and Rigid"
"The 16.5mm size is perfect for my boring operations. No chatter even at high speeds. Great tool body."
- Mark S. (USA)"Efficient chip removal"
"The internal cooling is powerful. Chips come out fast in stainless steel."
- Günter H. (Germany)"Excellent Price"
"BEYOND makes reliable drills. Arrived quickly in Japan."
- Sato K. (Japan)"Very stable"
- Alessandro M. (Italy)
"Quality steel"
- Jean-Luc P. (France)
Frequently Asked Questions
Q: Does this include the Torx wrench and screws?
A: Yes, each drill body includes the necessary insert screws and the correct Torx wrench for WC03 inserts.
Q: Is the coolant pipe included?
A: No, this is the drill body with built-in internal coolant holes. You connect it to your machine's coolant system.
Q: Can I use this for center drilling?
A: U-drills do not require a pilot hole. You can drill directly into solid material.
Quick Tip: 2D vs. 5D Comparison
For 16.5mm diameters, 2D drills offer the highest rigidity, making them ideal for high-feed roughing. If you require deeper holes (up to 82.5mm), 5D drills are available, though they require lower feed rates and significantly higher coolant pressure to prevent chip buildup.
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.