Korloy WCMT06T308-C20N PC5335 Heavy-Duty Large U-Drill Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy WCMT06T308-C20N PC5335 (ANSI: WCMT 432) is the premier Heavy-Duty Indexable Drill Insert in the Korloy lineup. Specifically engineered for Large-Diameter Shallow Hole Machining, the 06T3 size provides a massive 3.97mm thickness to ensure maximum edge integrity under extreme cutting forces. Utilizing the PC5335 PVD Grade, this insert thrives in heavy industrial environments, offering unmatched reliability when drilling through tough carbon steels, alloy steels, and austenitic stainless steels.
Maximum Edge Strength: In large-hole drilling, the outer insert endures incredibly high linear speeds. The WCMT 06T3's reinforced carbide substrate and advanced PVD coating are designed to resist plastic deformation and thermal cracking, even during continuous heavy-feed operations.
Technical Specifications (Metric & ANSI):
| ISO Designation | WCMT 06T308-C20N |
| ANSI Designation | WCMT 432 |
| Thickness (S) | 3.97 mm |
| Corner Radius (r) | 0.8 mm |
| Grade | PC5335 (Premium Tough PVD) |
| Target Diameter | D33mm - D50mm+ U-Drills |
Core Performance Benefits:
- Unrivaled Structural Integrity: The 3.97mm thickness is designed to prevent "insert crushing" during high-torque, large-diameter breakthroughs.
- Universal PC5335 Performance: A true multi-material grade that excels in Steel (P), Stainless (M), and Cast Iron (K), simplifying inventory for heavy machine shops.
- Aggressive C20N Geometry: Specifically tuned for large-volume chip removal. It curls thick chips tightly, preventing them from scarring the borehole or tangling with the drill body.
- Exceptional Heat Resistance: The multi-layer TiAlN coating acts as a thermal barrier, preserving the cutting edge during the long cycle times required for deep, large-diameter holes.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Low/Med Carbon Steel | 110 - 210 m/min | 0.08 - 0.20 mm/rev |
| Stainless Steel (316/Duplex) | 80 - 160 m/min | 0.06 - 0.16 mm/rev |
Pro Tip: Heavy-Duty Drilling Success
Drilling with WCMT 06T3 inserts requires massive spindle power. Ensure your CNC has sufficient low-end torque to maintain constant surface speed during the full engagement of the drill.
When drilling large holes, increase coolant concentration to at least 10%. The added lubrication is vital for the C20N breaker to smoothly eject large, thick chips from the cavity.
Packaging: 10 pieces per box.
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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.