BEYOND WC20-2D-SD17-WC03 Indexable U-Drill | 17mm CNC Fast Drill Body
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BEYOND WC20-2D-SD17-WC03
High-Rigidity 17mm 2D Indexable U-Drill | CNC Fast Hole Boring Body
Rapid 17mm Indexable Metal Drilling
The BEYOND WC20-2D-SD17-WC03 is a precision-engineered indexable insert drill designed for heavy-duty material removal. This fast hole U-drill features a 17mm cutting diameter with a 2D depth ratio and a 20mm straight shank. Equipped with internal cooling holes, it is the ideal solution for CNC lathe metal boring, delivering high-speed performance in carbon steel, stainless steel, and alloy workpieces.
Model Identification Breakdown
Technical Data & Metric/Imperial Reference
| Feature | Metric Model (mm) | Imperial Equivalent (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 17.0 mm | 0.669" |
| Shank Diameter | 20.0 mm | 0.787" |
| Max Drilling Depth (2D) | 34.0 mm | 1.338" |
| Product Model | WC20-2D-SD17 | WC0.78-2D-SD0.67 |
High-Strength 20CrMnTi Alloy & Spiral Flute Geometry
Durable Body Material: This indexable drill body is forged from 20CrMnTi alloy steel, treated with vacuum quenching for extreme surface hardness and a shock-absorbing core. This construction effectively dampens vibrations during shallow hole drilling, protecting your spindle and extending insert life.
Optimized Spiral Flute (U-Groove): The spiral flute geometry is precision-machined to facilitate rapid chip evacuation. The enlarged U-slot combined with dual internal cooling holes flushes chips away from the cutting zone instantly, preventing chip re-cutting and heat buildup during high-speed drilling.
Recommended Cutting Parameters
Optimize your 17mm U-drill performance with these baseline settings:
- Cutting Speed (Vc): 120 - 220 m/min (Standard Steel).
- Feed Rate (f): 0.05 - 0.12 mm/rev.
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 17}$$
- Coolant Strategy: Internal cooling is mandatory to ensure chip flushing at 17mm diameters.
WC Type U-Drill: Advantages & Considerations
- Uses WC series trigon inserts with 3 cutting edges (high cost-efficiency).
- Stable entry on curved or angled surfaces.
- Lower cutting resistance compared to square insert drills.
- Hole tolerance is roughly (+0.1 / -0.2mm).
- Requires high-pressure coolant pump for deep holes.
Verified Customer Feedback
"Solid and Reliable"
"Perfect fit for my CNC. 17mm diameter is precise and the body is very rigid."
- Mark S. (USA)"Best value drill"
"Used in 304 stainless. The internal cooling works like a charm. Much cheaper than big brands but same quality."
- Hans G. (Germany)"Highly Recommend"
"Fast shipping to Japan. BEYOND tool bodies never disappoint."
- Sato Y. (Japan)"Great boring tool"
- Luca F. (Italy)
"Five Stars"
- Pierre D. (France)
Frequently Asked Questions
Q: Does this include the Torx wrench and screws?
A: Yes, each BEYOND drill body includes the necessary high-strength screws and the correct Torx wrench.
Q: Can I use this for boring out existing holes?
A: Yes, U-drills are excellent for both starting from solid and enlarging existing holes.
Q: What is the benefit of the 20mm shank?
A: It allows for use in smaller CNC machines or tool holders that are limited to 20mm diameter shanks while maintaining high stability.
Quick Tip: 2D vs. 5D Comparison
For 17mm holes, 2D drills (like this model) offer maximum rigidity for high-feed roughing. 5D drills allow for deeper holes but require significantly reduced feed rates and much higher coolant pressure to ensure chips don't pack in the flute.
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.