BEYOND WC25-4D-SD17.5-WC03 U-Drill | 17.5mm Indexable Insert Drill (4D Depth)
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BEYOND WC25-4D-SD17.5-WC03
Precision 4D Indexable U-Drill | 17.5mm Industrial CNC Tooling
Rapid 17.5mm Indexable Holemaking
The BEYOND WC25-4D-SD17.5-WC03 is a high-rigidity indexable insert drill engineered for rapid metal removal in modern CNC machining environments. Featuring a 17.5mm cutting diameter and a 4D depth-to-diameter ratio, this tool is the definitive choice for high-speed internal cooling drilling. It is optimized for processing carbon steel, alloy steel, and stainless steel with maximum stability.
Model Code Specification
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 (4D) | 70.0 mm | 2.756" |
Recommended Cutting Parameters
Achieve optimal results in metal drilling by following these standard guidelines:
- Cutting Speed (Vc): 100 - 180 m/min (Material dependent).
- Feed Rate (f): 0.05 - 0.12 mm/rev.
- Coolant Strategy: High-pressure internal coolant is mandatory for 17.5mm diameters to ensure effective chip evacuation and prevent tool wear.
Premium Material & Specialized Spiral Flute
Constructed from high-performance alloy steel with specialized anti-vibration quenching, this WC03 insert holder ensures maximum rigidity. The wide spiral flute geometry is specifically engineered for "forced" chip removal, preventing chip-packing—the primary cause of tool failure in 17.5mm deep hole drilling. The nickel-plated body minimizes friction and prevents chip welding during high-speed operations.
WC U-Drill: Advantages & Considerations
- Uses WCMX / WCMT inserts with 3 usable cutting edges (High economy).
- Stable performance on uneven or sloped entry surfaces.
- Excellent chip breaking on low-carbon and alloy steels.
- Requires higher spindle torque and power than carbide drills.
- Surface finish may require secondary finishing for high-precision bores.
Frequently Asked Questions
A: Yes, with the correct WCMX insert coating and high-pressure coolant, it performs exceptionally in 304/316 stainless.
A: Yes, each drill body includes the necessary Torx wrench and insert screws.
A: Absolutely, it is designed for both CNC lathes (static or live tools) and machining centers.
Global Customer Trust
"Top Tier Rigidity" - Hans M. (Germany)
The 4D depth is surprisingly stable on my CNC center. Great chip evacuation.
"Best value drill" - Mark T. (USA)
Switched from a name brand to BEYOND. No difference in tool life!
"High cost-performance" - Kenji S. (Japan)
Wide flutes prevent any chip build-up. Very reliable body construction.
"Highly Recommend" - Liam W. (Australia)
Perfect 17.5mm diameter. Arrived fast and works exactly as described.
"Excellent Finish" - Luca R. (Italy)
The nickel plating is high quality. Chips flow smoothly through the flute.
Pro-Tip: Choosing Drill Depth (2D to 5D)
The L/D ratio is critical for CNC tooling success:
- 2D/3D: Maximum rigidity; best for shallow holes and high-feed roughing.
- 4D (This Model): The balanced universal standard for industrial deep-hole machining.
- 5D: Specialized long reach drill. 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.