BEYOND WC25-5D-SD21-WC04 U-Drill | 21mm Indexable Insert Drill (5D Depth)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
BEYOND WC25-5D-SD21-WC04
Professional 5D Indexable U-Drill | Precision Deep Hole CNC Tooling
High-Efficiency 21mm CNC Drilling Solution
The BEYOND WC25-5D-SD21-WC04 is an industrial-grade indexable insert drill engineered for extreme stability. Featuring a 21mm cutting diameter and a 5D 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 structural rigidity during deep-hole CNC drilling.
Model Code Explained
Technical Data & Metric/Imperial Conversion
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 21.0 mm | 0.826" |
| Shank Diameter | 25.0 mm | 0.984" |
| Drilling Depth (5D) | 105.0 mm | 4.133" |
Recommended Cutting Parameters
Optimize your CNC tool performance with these reference values:
- Cutting Speed (Vc): 110 - 180 m/min (Adjust based on material hardness).
- Feed Rate (f): 0.05 - 0.12 mm/rev.
- Coolant: High-pressure internal coolant is mandatory for 5D depth to clear chips effectively.
Material Excellence & Slot Design
Constructed from high-strength alloy steel with specialized anti-vibration heat treatment, the BEYOND U-drill offers extreme durability. The wide spiral flute geometry is designed for "forced" chip removal, preventing chip-packing—the primary cause of tool failure in 21mm deep hole drilling. The nickel-plated surface provides excellent corrosion resistance and enhanced tool life for this WC04 insert holder.
WC Series U-Drill: Pros & Cons
- Uses WCMX / WCMT inserts with 4 cutting edges (Cost-effective).
- Better stability on uneven or curved surfaces.
- Superior chip breaking on carbon and alloy steels.
- Higher torque requirements than SP series drills.
- Requires precise spindle alignment for deep 5D holes.
Pro-Tip: Choosing Drill Depth (2D to 5D)
The L/D ratio determines stability and application range in CNC tooling:
- 2D/3D: Maximum rigidity. Best for high-speed shallow holes.
- 4D: The universal standard for general-purpose machining.
- 5D (This Model): Specialized deep-hole drill. It allows for deep penetration but requires high-pressure internal coolant to ensure straightness and tool longevity.
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.