BEYOND WC25-4D-SD18.5-WC03 U-Drill | 18.5mm Indexable Insert Drill (4D Depth)
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BEYOND WC25-4D-SD18.5-WC03
High-Rigidity 4D Indexable U-Drill | 18.5mm Precision CNC Tooling
Rapid 18.5mm Indexable Holemaking
The BEYOND WC25-4D-SD18.5-WC03 is an industrial-grade indexable insert drill engineered for high-speed metal removal. With an 18.5mm cutting diameter and a 4D depth-to-diameter ratio, this tool is optimized for internal cooling drilling. It provides exceptional stability in carbon steel, alloy steel, and stainless steel, making it the perfect CNC machining tool for demanding production cycles.
Model Code Specification
Technical Data & Metric/Imperial Comparison
| Feature | Metric Model (mm) | Imperial Equivalent (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 18.5 mm | 0.7283" |
| Shank Diameter | 25.0 mm | 0.984" |
| Max Drilling Depth (4D) | 74.0 mm | 2.913" |
Recommended Cutting Parameters
For optimal metal holemaking, follow these standard guidelines:
- Cutting Speed (Vc): 100 - 180 m/min (Material dependent).
- Feed Rate (f): 0.05 - 0.12 mm/rev.
- Coolant Strategy: Use high-pressure internal coolant to flush chips effectively from the 18.5mm bore.
Premium Material & Specialized Chip Groove
Constructed from high-performance quenched alloy steel, this WC03 insert holder offers superior anti-vibration properties. The wide spiral flute geometry is precision-machined for "forced" chip removal, preventing chip welding and tool failure during 18.5mm deep drilling. The nickel-plated body ensures corrosion resistance and smooth chip flow during high-speed feed cycles.
WC U-Drill: Advantages & Considerations
- Uses WCMX / WCMT inserts with 3 usable cutting edges (High economy).
- Stable entry even on uneven or curved surfaces.
- Lower spindle torque requirement compared to large carbide drills.
- Higher power consumption than standard twist drills.
- Final tolerance may require secondary finishing for H7 specs.
Verified Customer Reviews
"Top Tier Stability" - Hans M. (Germany)
The 4D length works flawlessly on my CNC lathe for alloy steel.
"Incredible Value" - Mark T. (USA)
Equivalent to high-end brands at a fraction of the cost. Rigid body!
"Perfect Cooling" - Hiroshi S. (Japan)
Internal coolant ports provide consistent flow. Very clean holes.
"Professional Grade" - Liam W. (Australia)
High precision 18.5mm diameter. Use it daily in stainless 304.
"Reliable Tooling" - Ricardo P. (Brazil)
The nickel finish is durable and resists chip welding perfectly.
Product FAQ
A: This is a 4D model, allowing for a maximum depth of 74mm (18.5mm x 4).
A: No, this is the drill body only. It includes the insert screws and the correct Torx wrench.
A: Yes, the WC series creates a relatively flat bottom, ideal for blind holes in CNC machining.
Pro-Tip: Choosing Drill Depth (2D to 5D)
The L/D ratio is critical for efficient holemaking success:
- 2D/3D: Maximum rigidity; best for shallow holes and high-feed roughing.
- 4D (This Model): The industrial balanced standard for 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.