BEYOND WC40-4D-SD42-WC08 U-Drill | 42mm Indexable Insert Drill (4D Depth)
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BEYOND WC40-4D-SD42-WC08
Heavy-Duty 4D Indexable U-Drill | 42mm Large Hole CNC Machining
Industrial-Grade 42mm Indexable Drill
The BEYOND WC40-4D-SD42-WC08 is a robust indexable insert drill engineered for precision hole making. Featuring a 42mm cutting diameter and a 4D depth-to-diameter ratio, this tool is the definitive choice for high-speed internal cooling drilling. It provides exceptional stability and superior chip evacuation in carbon steel, alloy steel, and cast iron during heavy-duty CNC machining.
Model Code Explained
Technical Data & Metric/Imperial Comparison
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 42.0 mm | 1.654" |
| Shank Diameter | 40.0 mm | 1.575" |
| Max Drilling Depth | 168.0 mm | 6.614" |
Recommended Cutting Parameters
Optimize your CNC lathe and milling machine performance for the WC40-4D-SD42-WC08:
- Cutting Speed (Vc): 100 - 150 m/min (Depending on material hardness).
- Feed Rate (f): 0.08 - 0.15 mm/rev.
- Coolant Strategy: High-pressure internal coolant is mandatory for a 42mm diameter to flush large chips effectively and ensure tool longevity.
Advanced Material & Chip Groove Design
Constructed from high-performance alloy steel with specialized anti-vibration quenching, this WC08 insert holder ensures maximum rigidity. The spiral flute geometry is extra-wide to accommodate the high volume of material removed in 42mm deep hole drilling. The nickel-plated body minimizes friction and prevents chip welding, extending tool life significantly.
WC Series U-Drill: Pros & Cons
- Uses WCMX / WCMT inserts with 4 cutting edges (Cost-effective).
- Excellent performance in large-diameter drilling with stable chip breaking.
- Suitable for center-offset drilling on lathes.
- Requires high spindle power and torque.
- Coolant pressure must be maintained for vertical drilling.
Pro-Tip: Depth Selection (2D vs 5D)
The L/D ratio is critical for CNC tool stability:
- 2D/3D: Highest rigidity for fast cycle times on shallow holes.
- 4D (This Model): The sweet spot for heavy-duty drilling, balancing depth and tool deflection.
- 5D: Specialized for deep cavities; requires extremely high coolant pressure and lower feed rates.
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.