BEYOND WC40-2D-SD55-WC08 Indexable U-Drill | 55mm Large Diameter 2D CNC Drill Body
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BEYOND WC40-2D-SD55-WC08
Precision 55mm 2D Indexable U-Drill | Heavy-Duty CNC Solutions
Industrial 55mm Indexable Holemaking
The BEYOND WC40-2D-SD55-WC08 is a professional-grade indexable insert drill engineered for rapid material removal in high-torque CNC machining. This specialized fast hole U-drill features a 55mm cutting diameter with a 2D depth ratio. Designed for high-speed internal cooling drilling, it provides exceptional stability and efficient chip evacuation in carbon steel, alloy steel, and stainless steel workpieces. Origin: China.
Model Code Specification Breakdown
Technical Data & Units Comparison
| Feature | Metric Model (mm) | Imperial Equivalent (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 55.0 mm | 2.165" |
| Shank Diameter | 40.0 mm | 1.575" |
| Max Drilling Depth (2D) | 110.0 mm | 4.331" |
Material Integrity & Optimized Spiral Flutes
Premium Body Material: Crafted from high-performance quenched alloy steel (20CrMnTi), this WC08 insert holder is built to withstand extreme torque. The nickel-plated surface minimizes friction and prevents chip welding during intensive CNC lathe tool operations.
Spiral Flute Design: The optimized spiral flute geometry is designed for "forced" chip removal. By maximizing the chip flute space, it significantly reduces the risk of chip-packing in 55mm deep-hole drilling, ensuring a smooth finish and protecting the tool body.
Recommended Cutting Parameters
Optimize your metal boring efficiency with these baseline settings for 55mm WC drills:
- Cutting Speed (Vc): 110 - 190 m/min (Material dependent).
- Feed Rate (f): 0.06 - 0.15 mm/rev.
- Rotation Speed (N): $$N = \frac{Vc \times 1000}{\pi \times 55}$$
- Coolant Strategy: High-pressure internal cooling is mandatory for clearing heavy chips.
WC Type U-Drill: Advantages & Considerations
- Uses WCMX / WCMT inserts with 3 usable cutting edges (Economic choice).
- Stable entry even on rough or curved workpiece surfaces.
- Large diameter (55mm) allows for significant material removal in a single pass.
- Requires high spindle horsepower (kW) for 55mm diameters.
- Tolerance is roughly +0.15mm; best for roughing before finishing.
Verified Global Customer Feedback
"Excellent Rigid Body"
Johannes K. (Germany)
"Fast 55mm Bores"
Liam M. (Australia)
"Smooth chip evacuation"
Mateo R. (Brazil)
"Top Tier China Tool"
Ethan W. (USA)
"Highly Recommended"
Sato T. (Japan)
Frequently Asked Questions
Q: Does this include the WC08 inserts?
A: No, this is the 55mm U-drill body only. It includes the insert screws and the Torx wrench.
Q: Can I use this on a manual lathe?
A: It is primarily designed for CNC machines. Manual use requires extreme rigidity and high power which most manual lathes lack for a 55mm cut.
Q: What is the benefit of the WC trigon insert?
A: It provides 3 usable cutting edges per insert, reducing your cost-per-hole compared to 2-edged square inserts.
Pro-Tip: Choosing Drill Depth (2D-5D)
2D (This Model): Offers maximum rigidity. Perfect for shallow holes or when precision is prioritized.
3D to 5D: Used for deep hole drilling. These require much slower feed rates and significantly higher coolant pressure to prevent vibration and ensure chips don't clog the deeper flute.
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.