BEYOND WC25-2D-SD17.5-WC03 Indexable U-Drill | 17.5mm CNC Fast Hole Drill
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BEYOND WC25-2D-SD17.5-WC03
Precision 17.5mm 2D Indexable U-Drill | High-Speed CNC Metal Boring Body
High-Efficiency 17.5mm Indexable Fast Hole Drilling
The BEYOND WC25-2D-SD17.5-WC03 is a professional indexable insert drill engineered for rapid material removal in CNC machining centers. Known as a high-performance fast hole U-drill, it features a 17.5mm cutting diameter with a 2D depth ratio and a 25mm straight shank. This tool is optimized for internal cooling drilling in carbon steel, alloy steel, and stainless steel, ensuring maximum productivity for CNC lathe metal boring projects.
Model Code Specification Breakdown
Technical Data & Metric/Imperial Comparison
| Feature | Metric Model (mm) | Imperial Equivalent (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 17.5 mm | 0.689" |
| Shank Diameter | 25.0 mm | 0.984" |
| Max Drilling Depth (2D) | 35.0 mm | 1.378" |
| Product Model | WC25-2D-SD17.5 | WC0.98-2D-SD0.69 |
Advanced Material & Chip Evacuation Geometry
Premium Body Material: This 17.5mm U-drill is crafted from high-strength 20CrMnTi alloy steel, subjected to vacuum quenching for superior surface hardness and anti-vibration performance. This ensures the indexable drill body remains stable under the high temperatures of high-speed drilling.
Spiral Flute Geometry (U-Slot): Features a precision-engineered spiral flute designed for rapid chip evacuation. The 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 17.5mm U-drill performance with these baseline settings:
- Cutting Speed (Vc): 100 - 180 m/min (Depending on material).
- Feed Rate (f): 0.05 - 0.12 mm/rev.
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 17.5}$$
- Coolant Requirement: Internal cooling is mandatory for effective chip flushing and heat control.
WC Type U-Drill: Advantages & Considerations
- Uses WC series trigon inserts with 3 usable cutting edges (High economy).
- Better center stability when entering uneven or inclined surfaces.
- Optimized for balanced cutting forces in large diameter metal boring.
- Hole tolerance is typical for indexable drills (+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 17.5mm 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 in stainless."
- Hiroshi T. (Japan)"Highly recommended"
"BEYOND brand always reliable. Fits WC03 inserts like a glove."
- Luca F. (Italy)"Very stable."
- Pierre G. (France)
Frequently Asked Questions
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 necessary?
A: Yes, at 17.5mm, internal cooling is highly recommended to flush chips and prevent overheating.
Quick Tip: 2D-5D CNC Drill Selection
Choosing the right depth is crucial. 2D drills (like this SD17.5 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.