BEYOND WC25-4D-SD18-WC03 U-Drill | 18mm Indexable Insert Drill (4D Depth)
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BEYOND WC25-4D-SD18-WC03
Industrial 4D Indexable U-Drill | 18mm Precision CNC Machining
Efficient 18mm Indexable Holemaking
The BEYOND WC25-4D-SD18-WC03 is a high-rigidity indexable insert drill engineered for rapid metal removal. Featuring an 18mm cutting diameter and a 4D depth-to-diameter ratio, this tool is the professional choice for high-speed internal cooling drilling. Optimized for heavy-duty CNC machining, it provides exceptional stability in carbon steel, alloy steel, and stainless steel.
Model Code Specification
Technical Data & Metric/Imperial Comparison
| Feature | Metric Model (mm) | Imperial Equivalent (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 18.0 mm | 0.708" |
| Shank Diameter | 25.0 mm | 0.984" |
| Max Drilling Depth (4D) | 72.0 mm | 2.835" |
Recommended Cutting Parameters
Optimize your CNC holemaking with these standard guidelines for 18mm WC U-drills:
- Cutting Speed (Vc): 100 - 180 m/min (Material dependent).
- Feed Rate (f): 0.05 - 0.12 mm/rev.
- Coolant Strategy: High-pressure internal cooling is mandatory for effective chip evacuation and protecting the fast hole drill body.
Premium Material & Optimized Spiral Flute
Constructed from high-performance hardened alloy steel with specialized anti-vibration quenching, this WC03 insert holder ensures maximum rigidity. The large spiral flute geometry is specifically engineered for "forced" chip removal, preventing chip-packing—the primary cause of tool failure in 18mm deep hole drilling. The nickel-plated body minimizes friction and prevents chip welding during high-speed operations.
WC Series U-Drill: Advantages & Considerations
- Uses WCMX / WCMT inserts with 3 usable cutting edges (Cost-efficient).
- Stable performance on uneven entry surfaces compared to SP series.
- Excellent chip breaking on low-carbon and alloy steels.
- Requires higher spindle torque and machine power.
- Surface finish may require a secondary finishing pass for high-precision bores.
Product Q&A
A: It is recommended for CNC lathes or machining centers where high-pressure internal coolant can be supplied.
A: Yes, each 18mm U-drill body includes the correct Torx wrench and insert screws.
Global Customer Trust
"Top Notch Rigidity" - Hans B. (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!
"Smooth chip flow" - Kenji S. (Japan)
The spiral flute design really helps with forced chip removal.
"Highly Recommend" - Liam W. (Australia)
Perfect 18mm hole diameter. Solid nickel-plated body.
"Fast Delivery" - Ricardo P. (Brazil)
Excellent service and the product quality is very professional.
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.