WC40-4D-SD46-WC08 U-Drill Bit | 46mm 4D Indexable CNC Drill - BEYOND Tooling
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BEYOND WC40-4D-SD46-WC08
High-Rigidity 4D Indexable U-Drill | 46mm Heavy-Duty CNC Machining
Industrial-Grade 46mm Indexable Drilling
The BEYOND WC40-4D-SD46-WC08 is a professional indexable insert drill engineered for high-torque metal removal. Featuring a 46mm 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 during large hole CNC machining.
Model Code Specification
Technical Data & Metric/Imperial Comparison
| Dimension | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Cutting Diameter | 46.0 mm | 1.811" |
| Shank Diameter | 40.0 mm | 1.575" |
| Max Drilling Depth (4D) | 184.0 mm | 7.244" |
Recommended Cutting Parameters
Optimize your CNC lathe and milling machine performance for the WC40-4D-SD46-WC08:
- Cutting Speed (Vc): 100 - 160 m/min (Material dependent).
- Feed Rate (f): 0.08 - 0.15 mm/rev.
- Coolant Strategy: High-pressure internal coolant is mandatory for 46mm diameter to flush chips and prevent heat buildup.
Premium Material & Spiral Flute Geometry
Constructed from high-performance alloy steel with specialized anti-vibration quenching, this WC08 insert holder ensures maximum rigidity. The wide spiral flute geometry is engineered for "forced" chip removal, preventing chip-packing—the primary cause of tool failure in 46mm deep hole drilling. The nickel-plated body minimizes friction and prevents chip welding, extending tool life significantly.
WC Series U-Drill: Advantages & Considerations
- Uses WCMX / WCMT inserts with 4 cutting edges (Cost-effective).
- Stable performance on uneven entry surfaces compared to SP series.
- Ideal for large-diameter drilling with stable chip breaking.
- Requires high spindle torque and power.
- Must maintain constant internal coolant pressure.
Pro-Tip: Choosing Drill Depth (2D to 5D)
The L/D ratio is critical for CNC tooling success:
- 2D/3D: Maximum rigidity; best for shallow holes and high-feed rates.
- 4D (This Model): The balanced universal standard for industrial deep-hole machining.
- 5D: Specialized deep-hole drill bit. Requires very high coolant pressure and precise feed control to ensure 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.