BEYOND WC25-4D-SD19.5-WC03 U-Drill | 19.5mm Indexable Insert Drill (4D Depth)
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BEYOND WC25-4D-SD19.5-WC03
Professional 4D Indexable U-Drill | 19.5mm High-Precision CNC Tooling
Efficient 19.5mm Indexable Holemaking
The BEYOND WC25-4D-SD19.5-WC03 is a high-rigidity indexable insert drill engineered for rapid metal removal in modern CNC machining. Featuring a 19.5mm 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 and exceptional chip evacuation.
Model Code Specification
Technical Data & Metric/Imperial Comparison
| Feature | Metric Model (mm) | Imperial Equivalent (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 19.5 mm | 0.7677" |
| Shank Diameter | 25.0 mm | 0.984" |
| Max Drilling Depth (4D) | 78.0 mm | 3.070" |
Recommended Cutting Parameters
Optimize your metal drilling results with these baseline settings for the WC series rapid drill:
- 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 19.5mm diameters to ensure effective chip evacuation and heat dissipation.
Material Integrity & Advanced Flute Geometry
Crafted from high-performance alloy steel with specialized vacuum quenching, this WC03 insert holder is built to withstand extreme centrifugal forces. The large-capacity spiral flute is designed for "forced" chip removal, significantly reducing the risk of chip-packing in 19.5mm deep hole drilling. This indexable tool body features a nickel-plated surface to minimize friction and prevent chip welding during high-speed feed cycles.
WC U-Drill: Advantages & Considerations
- Uses WCMX / WCMT inserts with 3 usable cutting edges (High cost-efficiency).
- Stable performance on uneven or sloped entry surfaces.
- Lower cutting resistance compared to SP series drills.
- Requires higher spindle power than standard twist drills.
- Surface finish may requires a finishing pass for precision H7 bores.
Frequently Asked Questions
A: Yes, it is ideal for both through-holes and blind holes in CNC milling and lathe applications.
A: Yes, the 19.5mm U-drill body comes with the correct Torx wrench and insert screws.
Global Customer Trust
"Incredible Stability" - Hans G. (Germany)
The 4D length works perfectly on our CNC lathe for 4140 steel.
"Best value drill" - Mark T. (USA)
Switched from a name brand to BEYOND. No difference in tool life!
"Fast shipping" - Kenji S. (Japan)
High quality nickel plating. Chips flow very smoothly.
"Highly Recommend" - Liam W. (Australia)
Perfect 19.5mm hole diameter. Very consistent results.
"Top Tier Body" - Luca R. (Italy)
The coolant holes are aligned perfectly. Great finish.
Pro-Tip: Choosing Drill Depth (2D to 5D)
Selecting the right 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.